- Open Access
Exploring the historical distribution of Dracaena cinnabari using ethnobotanical knowledge on Socotra Island, Yemen
Journal of Ethnobiology and Ethnomedicine volume 17, Article number: 22 (2021)
In this study, we present and analyze toponyms referring to Socotra Island’s endemic dragon’s blood tree (Dracaena cinnabari) in four areas on the Socotra Archipelago UNESCO World Heritage site (Republic of Yemen). The motivation is the understanding of the past distribution of D. cinnabari trees which is an important part of conservation efforts by using ethnobotanical data. We assumed that dragon’s blood trees had a wider distribution on Socotra Island in the past.
This research was based on field surveys and interviews with the indigenous people. The place names (toponyms) were recorded in both Arabic and the indigenous Socotri language. We grouped all toponyms into five different categories according to the main descriptor: terrain, human, plant, water, and NA (unknown). Also, this study identified current and historical Arabic names of dragon’s blood trees of the genus Dracaena through literature review.
A total of 301 toponyms were recorded from the four study areas in Socotra Island. Among names related to plants, we could attribute toponyms to nine different plants species, of which six toponyms referred to the D. cinnabari tree, representing 14.63% of the total phytotoponyms in the category. Three historical naming periods prior to 2000 could be identified. The most commonly used name for dragon’s blood trees (D. cinnabari, D. serrulata, D. ombet) appears to be “ahrieb” “إعريهب” and its resin “dum al-akhawin” “دم الأخوين,” while derived (mixed-cooked) products are called “eda’a” “إيدع,” while regionally different names can be found.
The place names that refer to D. cinnabari are herein suggested to represent remnant areas of once large populations. Therefore, the toponyms may support known hypotheses based on climate models that D. cinnabari had a wider distribution on Socotra Island in the past. This study also confirmed the historical importance of dragon’s blood.
Ethnobotany and toponymy
Since the beginning of civilization, people have used plants for food and medicine, as well as materials for construction and the manufacture of crafts and many other products . In addition, plants have extensive symbolic uses, such as in art, mythology, and literature . Interactions between people and plants have accumulated large bodies of traditional ecological knowledge built by a group of people through generations living in close contact with nature. It includes a system of management of resources, classification, and observations . The term ethnobotany was designated by Harshberger , originally linked to the description of plant materials use by Aboriginal Australians. Ethnobotany later became a more ecological term, focusing on relationships, interrelationships, and interaction with a cultural perspective . Harshberger  considered that ethnobotany could also help in studying the past distribution of plants.
People need to give names to areas to label, identify, and locate them in space . When the indigenous inhabitants give such names, they often use them for distinctive spatial orientation, landscape features, natural phenomena, fauna, flora, natural substances, and names of tribes or important individuals . Toponyms are conservative, and although the language and wording may evolve, the roots of place names are not likely to be altered by changes in human activities in the landscape through time [8,9,10]. Toponyms can be easy to record and may provide useful information about the history of a land and its resources . According to Berkes , systematic meaning through toponyms, oral history, and spiritual relationships form part of a dimension of traditional ecological knowledge. Place names may also reflect intensity of land use, the extent of traditional ecological knowledge and population density of the associated society , historical-cultural environmental development , settlement history , and archaeology . They can be used for studying current environmental issues such as tracking recent climate changes and perceptions of those changes [17,18,19], water issues , and the climatic environment . The systematic study of indigenous place names can be an approach to the mapping of ethnoecological knowledge and understanding of the evolution of the landscape . Toponyms concerning plants (phytotoponyms) and animals (zootoponyms), named according to what people used to see in their everyday life, can be the indicators of the present, or former, presence of certain species [23,24,25,26].
Phytotoponyms may provide information on spatial locations, temporal information, and landscape . They have been used to study landscape ecology and botany , vegetation cover, and long-term vegetation degradation . According to Cunningham et al. , local knowledge may sometimes be the only evidence that remains where some plant species used to occur. Phytotoponyms, not just the common plant names, also describe the usage of the species as food, medicine, fabric, or other activities [29, 30] and their interaction with the surrounding environment [31, 32]. Therefore, these specific types of place names can be used for the reconstruction of past events, specific vegetation, or certain species [10, 33,34,35,36,37,38].
Socotra Island, the largest island of the Socotra Archipelago (Yemen), located at the crossroads between the Red Sea, the Arabian Sea, and the Indian Ocean, was recognized as a regional center of biodiversity. The archipelago is not only rich in biodiversity with spectacular endemic species, with more than 37% of endemic plant species , but also rich in traditions that conserve this biodiversity until today. The landscape changes over the last centuries and/or millennia have rarely been studied. Paleoclimate studies indicate wetter periods in the Holocene on Socotra [40, 41]. However, there is very little paleontological or data available for the reconstruction of historic and prehistoric landscapes on the island . In the more recent past (decades to a century), landscape changes were investigated with relation to vegetation, using historical photographs , a combination of old aerial photographs, satellite images, and repeated field measurements to study changes in population of Dracaena cinnabari and Boswellia elongata . More recently, Rezende et al.  studied land productivity on Socotra using NDVI derived from satellite images in the last 20 years, showing a highly dynamic system.
The current Socotra landscape is the witness of dynamic changes in the past. It was subjected to the centuries of human land-use pressures. One of the most important was resin (incense, myrrh, dragon’s blood) harvesting, resulting in the numerous wounds on dragon’s blood trees  and the decline of dragon’s blood trees’ distribution . The stone walls that cover large areas of the Socotra landscape refer back to the intensive management system of dragon’s blood, frankincense, and aloe for which Socotra was famous . Currently, Socotra faces the effect of overgrazing , climate change , and unsustainable harvesting of dragon’s blood . This research contributed to Socotra nature conservation, focusing on dragon’s blood trees’ distribution in the past using traditional environmental knowledge. This research is one of the first in the region which uses toponyms to explore the past environment and vegetation and the first research of its kind on Socotra. It is considered a pioneering research that will pave the way for other researchers. This research participates in the documentation of the Socotra traditional knowledge and its language.
Socotra and dragon’s blood
The genus Dracaena is classified in the family Asparagaceae subfamily Nolinoideae (The Linnean Society of London 2016). Dracaena cinnabari balf.f Socotra dragon’s blood tree belongs to the dragon’s tree group which contains 14 species as reviewed by Maděra et al.  based on Marrero et al.  and Marrero . The Socotra dragon’s blood tree (Dracaena cinnabari) is a flagship species of Socotra [53, 54]. It was a very important tree in ancient times due to a historically highly prized product called dragon’s blood, a red resin extracted for a wide range of uses including coloring and local medicine [39, 50]. Some believe that the name Socotra could even be derived from “Sukkatira” or contracted from “suq qatra,” where suq is the Arabic word for “market” and qatra for “dragon’s blood,” which means “drop” related to the dropping of the liquid resin pieces from the stem of the plant before drying it [55, 56]. The first who mentioned D. cinnabari resin was the unknown author of the Periplus of the Erythrean Sea around the mid-first century ad, who called it “cinnabar” . Dioscorides (90 ad) mentioned the resin in his book “On Medical Material” as Kinnabari “cinnabari,” brought from Africa .
Several local names for Dracaena may indicate the significance of the ethnobotanical knowledge as an important source of information that can be used for tracking the history of these names or link them to the land by studying place names (toponyms). The aim of this study is to use this ethnobotanical knowledge to explore the spatial distribution of toponyms related to Dracaena cinnabari tree and its potential as an information source to assess the past distribution of this unique flagship species on Socotra Island.
Material and methods
Socotra Island is part of the unique Socotra Archipelago natural UNESCO World Heritage Site (Republic of Yemen), with a total area of 3,675 km2 [70,71,72]. Livestock grazing, fishing, agriculture (mainly date palm plantation), and collection of non-timber forest products are the main activities of people; the latter includes gathering resins such as frankincense, myrrh, and dragon’s blood and harvesting of aloe juice . Socotra was famous for these products in ancient times . There are approximately 100 thousand inhabitants currently estimated, most of them live in coastal areas especially in the main cities of Hadibu and Qalansia. The main language is Socotri which is one of the Semitic languages , and Arabic is the official and commonly spoken language. Socotra Archipelago is recognized as a regional center of biodiversity, announced as a UNESCO World Natural Heritage Site since 2008 . The Socotri people live in a relatively isolated area and are strongly connected to their land. Socotra is approximately 350 km far from the nearest mainland Yemen and in the past has been reached only by ships, being disconnected from the mainland during the monsoon months that makes the island more isolated till the opening of Socotra airport in 2000, which opened Socotra to the outside world .
Study areas selection
Four areas have been selected by overlapping of two maps belonging to different datasets. The first map contains the current distribution of D. cinnabari , and the second map is the potential distribution of D. cinnabari according to its ecology . The areas of the potential distribution not overlapped by the current distribution were selected for the study (Fig. 1).
Survey technique and toponym meaning
Fieldwork was carried out by visiting the areas and interviewing people residing in the area. The place names were collected, and the meaning was directly obtained on the spot in collaboration with a local guide. The meaning of the names was discussed in detail with the indigenous people. The positions of the places have been recorded as possible by GPS. During the fieldwork, three types of data were recorded: (1) toponyms, (2) visual observation of existing D. cinnabari trees in nature, and (3) interview with the people about the area, in particular, the occurrence of D. cinnabari in the area. Three areas were visited personally (Hagher, Momi, Qataria), and due to logistic limitations, the place names for the fourth area (Ma’aleh) were recorded remotely through communication with local people. The place names were recorded by fieldwork and remotely further confirmed by sending them to the other two residents to ensure the meaning. Local people also have been asked if there are any names related to the dragon’s blood tree and its distribution. GIS ArcMap was used to plot the georeferenced toponyms for three areas (Hagher, Momi, and Qataria) and those from Ma’aleh by approximation. A detailed literature review of Arabic and Western sources was carried out to investigate current and old names for the dragon’s blood tree and its resin. Somali names for D. ombet were collected by direct communication with Mr. Ahmed Ibrahim Awale, and the same for Sudani names for D. ombet by indirect communication with Dr. Iqbal Madani.
Tracking dragon’s blood names through history
From literature, we can distinguish three naming periods (Fig. 2). A variety of names for dragon’s blood appear during the golden era in science in the Islamic Arabic world (ca. 800–ca. 1500 ad). The last period represents the new western renaissance and scientific exploring missions, especially from Europe. The described period in this study begins in the year 60 ad, with the appearance of the first name referred to dragon’s blood, and ends in the year 2000 with the opening of Socotra to the outside world—the opening of Socotra International Airport. The horizontal oval shape shows that the naming was at close intervals, while the oblique oval shape indicates that the naming appeared at long intervals (Tables 1 and 2).
Depending on the number of sources for each time, the frequency of names can be limited (e.g., few first-century ad sources). High-frequency words are the occurrences of eda’a, dum al-akhawin, and dragon’s blood; medium frequency words are cinnabar, andam, and katir; other names are in low frequency. Most of the names referred to the resin, and a few referred to the tree (shian, al-huraifah, and kharya). The two names for the resin appearing in the first period (Fig. 3) were treated as one name because they came from the same origin “cinnabar.” Four common names for the dragon’s blood tree appear to be “dum al-akhawin,” “eda’a,” “al-huraifah,” and “shian,” besides the English name “Dragon’s Blood Tree,” of course.
The contemporary names (Table 3) were written according to where they occur in the references; names from Yemen, Saudi Arabia, and Sudan were written in simplified English by the author. The names representing four species of Dracaena distributed in the Arab World are presented in five languages (Socotri, Arabic, Hadandawa, Somali, and Amazigh). All names in the table are for dragon’s blood tree, and the names of the resin “emszoloh” and “iydiha” are added from Socotri. The word “dum al-akhawin” is used as a name for the tree and the resin.
A total of 301 toponyms were recorded from the four study areas in Socotra Island (Table 4), which characterize how the Socotri people view their landscape. Toponyms were clustered in six broad categories based on their meaning:
Animal: place name referring to animals such as livestock, birds, other
Human: place names referring to human body parts, names, feeling, interaction, tools
NA: place name with unknown meaning
Plants: place names referring to plant species, density
Terrain: place names referring to the shape and color of the landscape
Water: place names referring to water such as rain, streams
Most toponyms were recorded from the Hagher, and the lowest number were recorded from Ma’aleh as this was through indirect communication.
It is clearly visible (Fig. 4) that the most represented toponyms were related to terrain (37.5%). People not only describe the topography of the land such as mountain, hill, flat, and rock but also describe the general view of those areas such as open, narrow, protected, high, and low; the people also describe the soil and color of the land. Terrain toponyms followed by names referring to human characters and activities (24.3%). Interestingly, most of these names referred to human activities such as playing, jumping, relaxing, or giving, and that can be related to a once frequent activity in the place, yet they also use feelings such as hunger and fear and parts of the body like the ears, neck, and teeth if they resembled the topography by human parts. There are no naming places after people except two names for the tribes. The plant names represent 13.6%, varying between 8.7 and 15.6% among study areas (Fig. 5). These three categories have a higher percentage within all study areas (Fig. 5). Toponyms related to animals and water have a lower percentage of 9% and 6.9%, respectively, and there are names of unknown meaning (10.6%).
Given the importance of plants for people in Socotra, it is not surprising that the names referred to plants come in the third position. Based on further analysis, we divided the plant names into five subcategories (Table 5) based on their meaning;
Unidentified: place names referring to the unidentified plant species
Identified: place names referring to the identified plant species such as the Socotri word “Tayf” for Aloe
General: place names referring to the word “plant” without any specification
Density: place names referring to the plant density
Grass: place names referring to grassland
We found six records of phytotoponyms related to D. cinnabari, which represent 2% from all toponyms recorded, 14.6% from the phytotoponyms, and 27.3% from the subcategory of phytotoponyms referring to identified plant species (Figs. 6 and 7).
Reconstruction of dragon’s blood tree distribution
Among the six phytotoponyms referring to Dracaena (Fig. 7), there is one located in the far end of Ma’aleh Mountains and two on the eastern edge of Momi plateau, and both far from the currently known D. cinnabari distribution. The other toponyms include three localities in Qataria where few remaining trees are known (Maděra et al. ) and one in the Hagher, at the border of the current distribution of D. cinnabari. People in those areas have been interviewed individually, within-group discussion and communication, and the results are presented in the map (Fig. 8). The people from Hagher speak about possible sites for D. cinnabari close to the areas of current distribution, and people in Qataria and Momi speak about the possible sites for D. cinnabari in the cliffs towards the sea; however, we could not confirm this during the study visit. During the fieldwork, we recorded new sites with D. cinnabari (Fig. 8) where the trees have been observed. Both possible and new sites need further research.
Tracking dragon’s blood tree phytotoponyms
Names through history
According to the estimates based on genetic research, Socotra was inhabited ca. 6000 years bp . From the old manuscripts, cinnabar was derived from the ancient Greek name for red mineral (mercury sulfide HgS) and adapted as the scientific name for Socotra dragon’s blood tree (Dracaena cinnabari) and has no relation to current or historical Arabic names only perhaps by color. Arabic literature [59, 61, 84, 86] use dum al-akhwin as a common Arabic name for dragon’s blood resin, sometimes for the tree without specification of the sources and for the resin brought from Socotra, and this name continued to be used from the past until today. “Eda’a” is the only local Socotri name that appears significantly in Arabic literature [60, 87] especially for the resin of dragon’s blood tree due to its famous use in medicine. Other Arabic old names for dragon’s blood such as “andam” [76, 83], “dum al-thuban” , and “shian”  are also used for other products, as an example, “andam” used for logwood. “Dum al-tinnin”  is the Arabic translation of dragon’s blood, and “katir” is the general name for drops. The first record for the local name of dragon’s blood tree was in 1899 by Forbes , but eda’a and emsello (“moselle”) have been mentioned also by Wellsted . Cabo González and Bustamante Costa  suggested that there is a weakness in dictionaries and confusion of terminology related to dragon’s blood names and gave an example of “andam” and “baqam.” However, andam with its red color can bring some confusion but baqam before 1500 ad was rarely mentioned in Arabic literature, in my review just once by Ibn Manzur and Mukarram . From their reviews, “shian” is a popular name for dragon’s blood in Morocco which is of Persian origin; however, the translation of dragon’s blood to Persian is “khun-siawshan” which appears in 1205 by Abi Umran , who divided the names by area: Arabia “dum al-akhawin and eda’a,” Morocco “shian,” and Persia “khun-siawshan.” In their review, three other names of dragon’s blood appear “Itr mansham,” “Hagun,” and “Tabdigha” referenced to Abu al-khair (ca 1200) , and according to them, “Tabdiga” is from the Amazigh language.
There is no sign of loss of cultural knowledge as a consequence of Arabic intervention. Only one name appears from Arabic (name of the plant) and that could be from an individual perspective or newly named, but there are still names that cannot be explained by the local people and that show their ancient roots. Although a large part of Socotra is uninhabited intensively by people—around 100 thousand inhabitants in 3625 km2, many spaces have no urbanization. The human interaction is very clear: by giving names for each patch of land (personal observation), this confirms that the Socotri people have strong knowledge, understanding, interaction, and connection with places, and the huge walls “eggehon” dominating the landscape especially in the higher altitudes has been claimed as circumstantial evidence that the wall system on Socotra might be a sign of past historical intensive farming activities for incense, dragon’s blood, or aloes .
There are four dragon’s blood trees in the Arabic-speaking regions, D. cinnabari in Socotra; D. serrulata in Yemen, Oman, and Saudi Arabia; D. ombet in Saudi Arabia, Sudan, Egypt, Ethiopia, and Somalia; and D. draco subsp. ajgal in Morroco. We have seven groups of names according to the area (Table 2). In my opinion, “Ahrieb” with its different form of writing and pronunciation is the common local name for all dragon’s blood tree species in Arabic region (Yemen, Socotra, Oman, and Saudia Arabia) (Table 3) [39, 46, 68, 69, 91]. Different names appear such as “Ajgal” in Morocco in the Amazigh language, “Embet” in Sudan in the Hadandawa language, and “Mooli” in Somalia in the Somali language. In Socotra, there is only one local name for the dragon’s blood tree which is “ahrieb;” other names such as “emsello” is for the pure product or “eda’a” is the mixed product with tree bark [39, 46, 68], and due to the difference in dialect, people of western Socotra call it “ahrieb,” with “ح” instead of “ع”. Other current Arabic local names linked the leaves and their similarity with palm leaves such as “khwas” and “khazm;” the same is used for the leaves of dragon’s blood tree in Socotra “sa’af” which is also used for palm leaves. The names in Morocco, Sudan, and Somalia are not linked to Arabic; “ajgal” and “ombet” are in local languages and have been used for the scientific name.
The use of geographical-/ecological-based toponyms stands as a potentially useful tool for aiding the reconstruction of historical changes. Toponyms have rarely used as a biogeographic indicator of species or vegetation-type occurrences . Analyzing the toponyms (Fig. 5) shows a high frequency of names referring to the terrain. Zeini et al.’s  study in Sinai (Egypt) classified 69.9% of their recorded place names as referring to the landforms followed by names that referred to water. Human place names are typically metaphorical, alluding to a resemblance between some physical feature of a site and the shape of the organ after which it is named . In Socotra, human place names describe where things happen and places where people harvest, gather the goats, collect water, or play and they have a general name for a whole area or landmark (like a mountain). Plotting the distribution of plant names in Socotra is another way to appreciate and display the ecological niche and knowledge.
Plant names (phytotoponyms), which are our focus in this research, come in the third position with a frequency of 13.6%. Most of the phytotoponyms are for general names or uses, while 53.7% of all phytotoponyms could be identified by scientific names and 12.2% could not be identified (Table 4). This shows a strong connection between the people and the plants. The identified plants are important for food, fodder, and firewood (Phoenix, Tamarix, Punica), famous for their products such as (Dracaena and Aloe) . Similarly, Shi et al.  mentioned that plant names often used in daily life appear frequently in phytotoponyms. In Socotra, trees and large shrubs easily distinguished in the landscape, such as Commiphora and Maerua, represent landmarks (Wolf 1998: Camarda 2005 cited by Pinna et al. ), and these categories give a good sign for orientation and recognizing the landscape. Water was in the last position, with 5.3% names related to water existence or its amount. Comparing within areas, we found out that eastern sites have more place names related to water than western site, which looks logically correct with eastern Socotra having a higher amount of water than the western areas . Names related to cows and goats represent the main animal toponyms because they are the main livestock on the island. All areas have a similar percentage of names referring to animals that can be explained by the fact that grazing is common in the selected areas and on the island in general. Names with unknown meaning could be linked to ancient language as suggested by Wagner (1960–1964) cited by Pinna et al. .
Potential implications for past dragon’s blood tree distribution
Dragon’s blood tree name appears 6 times which represent 14.6% of the phytotoponyms, four occurrences in western Socotra with two different variants and two in eastern Socotra with also two different variants. Pérez  also noted three different variants of the phytotoponyms “drago” in the Canary Islands, exploring the local dialects. All the names in the western areas of the island are not single names but linked with other words, D. cinnabari pool, D. cinnabari sign, D. cinnabari place, and D. cinnabari stand. The six names include two names associated with the existing D. cinnabari tree, one name associated with a place close to D. cinnabari trees and where there have been trees before, one name associated with a place close to D. cinnabari tree but nobody remembers that there was a tree before, one name with no tree near but according to the local people it could exist, and one name with no trees and historically nobody knows of the trees existence on the area.
Half of the D. cinnabari place names occur in Qataria, the area with a few limited isolated trees. Qataria is the farthest western site of current D. cinnabari distribution on the island, and the place names of D. cinnabari are near and around the remnant D. cinnabari trees. According to the local people in the area, there is a possibility of a small dragon’s blood trees in the cliffs towards the sea, which provides an opportunity for discovering new Dracaena sites in the area. This area is the western end of the ridge stretching from the central Hagher Mts., and it indicates that the entire ridge could be likely covered by Dracaena forests in the past, even though Attorre et al.  did not assign most of this area to the model of potential Dracaena cinnabari distribution. In the second area in Momi, on the eastern side of the island, there is a D. cinnabari place name, but according to the local community, there is also the possibility of D. cinnabari trees on the cliffs towards the sea. In fact, this area is not far from the recent Dracaena population and was included in the potential Dracaena occurrence made by Attorre et al. .
The third place is Ma’aleh (in the west), where D. cinnabari is a place name but no more information is available and there was no opportunity for visiting the site. This finding is the most important because is the furthest from recent D. cinnabari distribution. In the entire western part of Socotra, there is no one current record of Dracaena occurrence beyond Qataria  and this toponym would also confirm the model of potential Dracaena occurrence in the Ma’aleh’s highland published by Attorre et al. .
The last D. cinnabari place name in the Hagher is close to D. cinnabari population, but the name is for a place without D. cinnabari trees and they do not know the presence of the tree in the place before; another D. cinnabari place name was also recorded from Hagher towards To’ahor’s campsite-outside or study area (communication with local people).
In all investigated areas, there are still some preserved plant species accompanying dragon’s blood tree woodlands as Boswellia ameero, B. elongata, Buxanthus pedicellatus, Commiphora planifrons, Euphorbia socotrana, or Euryops arabicus [96,97,98,99,100,101,102]. The occurrence of these plants can serve as an indirect indicator of previous D. cinnabari distribution according to the associated plant communities.
Generally, the D. cinnabari place names seem to be associated with the current and potential distribution. A similar result was obtained by Pérez  for Dracaena draco on Gran Canaria. In his map, there are 42 phytotoponyms: 2 names associated with existing D. draco occurrence and others are close to the current distribution of individual trees or in the area of potential distribution. The population decline of Dracaena draco is much larger than thus documented on Socotra Island by many authors [43, 47, 103,104,105,106]. Overgrazing destroying the natural regeneration  and very slow growth of recruitment  do not allow the trees to escape from the browsing zone [50, 54, 108]. Therefore, these are known as the main reasons for the population decline. The loss of each tree leads to a decrease in biodiversity, as dragon’s blood trees are important nurse trees  and habitats for animals also [109, 110]. The loss of dragon’s blood trees may also affect the hydrological cycle as these plants capture horizontal precipitation .
In Socotra, luckily, the landscape still has its original characteristic with relatively little human interventions , although the natural and human landscape is rapidly changing . Ethnobotanical knowledge has been preserved within its unique language . We can summarize our conclusions in seven main points:
Dracaena cinnabari toponyms exist in Socotra and seem related to areas where currently no trees are present, yet they were historically a feature of the place; this could support the argument that the distribution of Dracaena was larger in the past .
The D. cinnabari trees could be distributed to the whole medium to higher altitude areas on the island, potentially from the west in Ma’aleh to the east in Momi, before humans inhabited the island.
Currently, the Arabic common name for dragon’s blood resin is “dum al-akhawin” and that for the tree is “ahrieb” and can be generalized.
The local name that appeared in history for the main product is “eda’a” (mixed-cooked dragon’s blood), and this can be a sign that “eda’a” was the main product exported from Socotra.
There could be potentially new areas for finding D. cinnabari trees especially in the cliff areas towards the sea in Qataria and Momi, also the northeastern slopes of Hagher towards Momi plateau in the east, and Noged plain to the North.
This result can be an important part of conservation efforts, and those areas with D. cinnabari toponyms could be potential areas for future reforestation of this species, where ecological conditions allow.
The study has stressed the need for documenting place names and knowledge related as part of preserving the cultural heritage related to plants of the Socotra Archipelago and the importance of using this knowledge for sustainable resource management. This study is just a first step for further use of toponyms and can be repeated for other important species or historical land use.
Availability of data and materials
All data generated or analyzed during this study are included in this published article (and its supplementary information files).
Gerique A. An introduction to ethnoecology and ethnobotany: theory and methods. Integrative assessment and planning methods for sustainable agroforestry in humid and semiarid regions. Advanced Scientific Training (ed.), Technical Report. Loja-Ecuador: Researchgate; 2006. p. 20.
De Carvalho LMM. The symbolic uses of plants. In: Anderson EN, Pearsall D, Hunn E, Turner N, editors. Ethnobiology. 2011. https://doi.org/10.1002/9781118015872.ch21.
Studley J. Dominant knowledge systems and local knowledge. In: Mountain Forum: a global network for mountain communities, environment and sustainable development; 1998.
Harshberger JW. The purposes of ethno-botany. Botanical gazette. 1896;21(3):146–54. https://doi.org/10.1086/327316.
Horák M, Růžičková G, Kocourková B, Sapáková E, Kavenská V, Cruz L, Škrabáková L, Tournon J, Alpala M, Forero Pinto L, Rosero A, Castro N, Beltran G, Halbich M, Ortega F, Sobiecki J, Amirova E. A reader in ethnobotany and phytotherapy. In: Horák M, editor. Brno: Mendel University; 2014.
Naftali N. Toponymy: the lore, laws and language of geographical names. New York. 2000.
Gruzdeva E, Temina M. Nivkh toponyms in the Amur-Sakhalin region of the Russian Far East. Altai hakpo. 2020;(30):167–204.
Rose-Redwood R, Alderman D, Azaryahu M. Geographies of toponymic inscription: new directions in critical place–name studies. Progress Hum Geogr. 2010;34(4):453–70. https://doi.org/10.1177/0309132509351042.
Qian S, Kang M, Wang M. An analysis of spatial patterns of toponyms in Guangdong, China. J Cult Geogr. 2016;33(2):161–80.
Zhong A, Wu Y, Nie K, Kang M. Using local toponyms to reconstruct the historical river networks in Hubei Province, China. ISPRS Int J Geo-Inf. 2020;9(5):318.
Cunningham AB. Applied ethnobotany: people, wild plant use and conservation. United Kingdom: Earthscan; 2001.
Berkes F. Traditional ecological knowledge in perspective. In: Inglis JT, editor. Traditional ecological knowledge: concepts and cases. Canada: International Development Research Centre; 1993.
Hunn E. Columbia Plateau Indian place names: what can they teach Us? J Linguistic Anthropol. 1996;6(1):3–26.
Ford Ford RE. Toponymic generics, environment, and culture history in pre-independence Belize. Names. 1991;39(1):1–26.
Zhao F, Fu Y, Luan G, Zhang S, Cai J, Ding J, Qian J, Xie Z. Spatial-temporal characteristic analysis of ethnic toponyms based on spatial information entropy at the rural level in Northeast China. Entropy. 2020;22(4):393.
Morphy F, Morphy H, Faulkner P, Barber M. Toponyms from 3000 years ago? Implications for the history and structure of the Yolŋu social formation in North-east Arnhem land. Archaeol Oceania. 2020;55(3):153–67. https://doi.org/10.1002/arco.5213.
Sousa A, García-Murillo P. Can place names be used as indicators of landscape changes? Application to the Doñana Natural Park (Spain). Landscape Ecol. 2001;16(5):391–406. https://doi.org/10.1023/A:1017585101389.
Sweeney S, Jurek M, Bendnar M. Using place names to interpret former floodplain connectivity in the Morava River, Czech Republic. Landscape Ecol. 2007;22(7):1007–18. https://doi.org/10.1007/s10980-007-9085-7.
Sousa A, García-Murillo P. Sahin S, Morales J, García-Barrón L. Wetland place names as indicators of manifestations of recent climate change in SW Spain (Doñana Natural Park). Climatic Change. 2010. doi: https://doi.org/10.1007/s10584-009-9794-9, 100, 3-4, 525, 557.
Frajer J, Fiedor D. Discovering extinct water bodies in the landscape of Central Europe using toponymic GIS. Moravian Geogr Rep, 2018.
Henshaw A. Pausing along the journey: learning landscapes, environmental change, and toponymy amongst the Sikusilarmiut. Arct Anthropol. 2006;43(1):52–66. https://doi.org/10.1353/arc.2011.0047.
Westing AH. Cultural and spiritual values of viodiversity. Environment. 2000.
Tattoni C. Nomen Omen. Toponyms predict recolonization and extinction patterns for large carnivores. Nat Conserv. 2019. doi: https://doi.org/10.3897/natureconservation.37.38279, 37, 1, 16.
Aybes C, Yalden DW. Place-name evidence for the former distribution and status of wolves and beavers in Britain. Mammal Rev. 1995;25(4):201–26. https://doi.org/10.1111/j.1365-2907.1995.tb00444.x.
Boisseau S, Yalden DW. The former status of the crane Grus grus in Britain. Ibis. 1998;140(3):482–500. https://doi.org/10.1111/j.1474-919X.1998.tb04610.x.
Hough C. Deer in Sussex place-names. Antiquaries J. 2008;88:43–7. https://doi.org/10.1017/S0003581500001347.
Calvo-Iglesias MS, DÍaz-Varela R.A, MÉndez-MartÍnez G, Fra-Paleo U. Using place names for mapping the distribution of vanishing historical landscape features: the Agras Field system in Northwest Spain. Landscape Res. 2011;37(4):501–17. https://doi.org/10.1080/01426397.2011.604716.
Shi G, Ren F, Du Q, Gao N. Phytotoponyms, geographical features and vegetation coverage in Western Hubei, China. Entropy. 2015
Gruezo WS. Of Philippine plants and places: an ethnobotanical memoir. Asia Life Sci. 1999;8:15–47.
Fagúndez J, Izco J. Diversity patterns of plant place names reveal connections with environmental and social factors. Appl Geogr. 2016;74:23–9.
Čargonja H, Đaković B, Alegro A. Plants and geographical names in Croatia. Coll Anthr. 2008;32(3):927–43.
Bacchetta G, et al. A survey of the botanical place names of the Iglesiente area (South West Sardinia). Bot Lith. 2007;13(3):1–19.
Conedra M, Vassere S, Neff C, Meurer M, Krebs P. Using toponymy to reconstruct past land use: a case study of ‘Brüsáda’ (Burn) in Southern Switzerland. J Hist Geogr. 2007;33(4):729–48. https://doi.org/10.1016/j.jhg.2006.11.002.
Fei S. The geography of American tree species and associated place names. J For. 2007;105(2):84–90.
Pagán-Jiménez JR, Lazcano-Lara JC. Toponymic data helps to reveal the occurrence of previously unknown populations of wild Zamia pumila L. on volcanic substrates in South-Central Puerto Rico. Ethnobiol Lett. 2013;4:52–8.
Fagúndez J, Izco J. Spatial analysis of heath toponymy in relation to present-day heathland distribution. Int J Geogr Inf Sci. 2015;30(1):51–60.
Pinna C, Carta L, Deiana V, Camarda I. Phytotoponyms of Arbutus unedo L. and their distribution in Sardinia (Italy). Plos One. 2017;12(7):e0181174.
Barau AS, Abdulhamid A. Using toponyms to trace and document depletion of Indigenous trees in a dryland African city. Northwest: A Book of Readings; 2018.
Miller AG, Morris M. Ethnoflora of the Soqotra Archipelago. Edinburg-United Kingdom: Royal Botanic Garden Edinburgh; 2004.
Fleitmann D, Burns SJ, Mangini A, Mudelsee M, Kramers J, Villa I, et al. Holocene ITCZ and Indian Monsoon dynamics recorded in stalagmites from Oman and Yemen (Socotra). Quaternary Sci Rev. 2007;26(1-2):170–88.
Van Rampelbergh M, Fleitmann D, Verheyden S, Cheng H, Edwards L, De Geest P, De Vleeschouwer D, Burns SJ, Matter A, Claeys P, Keppens E. Mid-to Late Holocene Indian Ocean monsoon variability recorded in four Speleothems from Socotra Island, Yemen. Quat Sci Rev. 2013;65:129–42.
Van Damme K, Vahalík P, Ketelaar R, Jeziorski P, Bouwman J, Morris M, et al. Dragonflies of dragon’s blood Island: atlas of the Odonata of the Socotra Archipelago (Yemen). Rend Lincei Sci Fis Nat. 2020;31(3):571–605.
Habrova H, Cermak Z, Pavlis J. Dragon’s blood tree–threatened by over-maturity, not by extinction: dynamics of a Dracaena cinnabari woodland in the mountains of Soqotra. Biol Conserv. 2009;142(4):772–8. https://doi.org/10.1016/j.biocon.2008.12.022.
Lvončík S, Vahalík P, Bongers F, Peijenburg J, Hušková K, Van Rensburg J, Hamdiah S, Maděra P. Development of Boswellia elongata Balf. F., population in Homhil Protected Area, Soqotra. Rendiconti Lincei. 2020. doi: https://doi.org/10.1007/s12210-020-00936-4.
Rezende M, Riccardi T, Malatesta L, Attorre F, Van Damme K. Land productivity dynamics in Socotra Island (Yemen). Rendiconti Lincei. Scienze Fisiche e Naturali. 2020;31(3):737–46. https://doi.org/10.1007/s12210-020-00928-4.
Al-Okaishi A. Local management system of dragon’s blood tree (Dracaena cinnabari Balf. f.) resin in Firmihin Forest, Socotra Island, Yemen. Forests. 11(389). https://doi.org/10.3390/f11040389.
Attorre F, Francesconi F, Taleb N, Scholte P, Saed A, Alfo M, et al. Will Dragon blood survive the next period of climate change? Current and future potential distribution of Dracaena cinnabari (Socotra, Yemen). Biol Conserv. 2007;138(3–4):430–9. https://doi.org/10.1016/j.biocon.2007.05.009.
Jansen van Rensburg J, Hopper K. Incense and imagery: mapping agricultural and water management systems on the island of Socotra, Yemen. Proc Semin Arab Stud. Archaeopress. Oxford, United Kingdom. 2017;47:129–38.
Maděra P, Habrová H, Šenfeldr M, Hubálková I, Lvončík J, Ehrenbergerová I, et al. Growth dynamics of endemic Dracaena cinnabari of Socotra Island suggest essential elements for a conservation strategy. Biologia. 2018;74(4):339–49.
Maděra P, Forrest A, Hanáček P, Vahalík P, Gebauer R, Plichta R, et al. What we know and what we do not know about dragon trees? Forests. 2020;11(2):236. https://doi.org/10.3390/f11020236.
Marrero, A; Almeida, S.R; Martín-González, M. A new species of the wild dragon tree, Dracaena (Dracaenaceae) from Gran Canaria and its taxonomic and biogeographic implications. Bot J Linn Soc 1998, 128, 291–314.
Marrero A. Dracaena Tamaranae, El Género Dracaena y Otros Afines: Análisis Morfológico Para Unaproximación Filogenética. El Mus Canar. 2000;55:301–34.
Rejžek M, Svátek M, Šebesta J, Adolt R, Maděra P, Matula R. Loss of a single tree species will lead to an overall decline in plant diversity: effect of Dracaena cinnabari Balf. f. on the vegetation of Socotra Island. Biol Conserv. 2016;196:165–72. https://doi.org/10.1016/j.biocon.2016.02.016.
Maděra P, Volařík D, Patočka Z, Kalivodová H, Divín J, Rejžek M, et al. Sustainable land use management needed to conserve the dragon's blood tree of Socotra Island, a vulnerable endemic umbrella species. Sustainability. 2019;11(13):3557. https://doi.org/10.3390/su11133557.
Forbes LLD. Narrative of the journey. In The natural history of Sokotra and Abd-el-Kuri; Pp. xv–xIvi. In: FORBES H. O. (ed.); 1903.
Elie SD. Soqotra: south Arabia’s strategic gateway and symbolic playground. Br J Middle Eastern Stud. 2006;33(2):131–60. https://doi.org/10.1080/13530190600953278.
Breasted JH. The Periplus of the Erythraean Sea: travel and trade in the Indian Ocean by a merchant of the first century, translated from the Greek and annotated by Wilfred h. Schoff, AM, Secretary of the Commercial Museum, Green, and Company: Philadelphia. London; 1912.
IBIDIS Press. DIOSCORIDES. DE MATERIA MEDICA. PO Box 81169 Parkhurst Johannesburg South Africa 2120: IBIDIS PRESS; 2000; p. 799.
Ibn Sallam, Abū ʻUbayd al-Qāsim. al-Gharīb al-muṣannaf, Ṣafwān ʻAdnān Dāwūdī.; dar al-fayha’a: Beirut; 2005.
Abu Hanifa ad-Dīnawarī (869). Book of plants, Edited by Bernhard Lewin.; Franz Steiner Verlag: Wiesbaden, Germany; 1974.
Manzur I. Muhammad ibn Mukarram (1290). Lisān al-ʿArab. Beirut: Dar Sader; 1990.
Al-Firuzabadi, Abū al-Ṭāhir Majīd al-Dīn (1410). Al-Qamus al-Muhit, suppervisedby: Muhammad Naim al-Irqsusi.; Mu’asasat al-Risalah: Beirut; 2005.
Ahmed I. Bek. Mu’jam Asma’a Al-nbat; Al-Matba’a al-Amiriya-Cairo: Cairo; 1926.
Wellsted JR. Memoir on the island of Socotra. J Royal Geogr Soc London. 1835;5:129–229. https://doi.org/10.2307/1797874.
Balfour IB. Botany of Socotra. Trans Roy Soc Edinburgh. 1888;31:1–446.
Balfour IB. Botany of Socotra and Abd-Elkori. In Natural History of Socotra and Abd-elkori; Livepool Museem P .P. 598, 1903. p. 445–570.
Bent T, Bent M. Southern Arabia. London: Smith, Elder and Co; 1900.
Al-Khulaidi AW. Flora of Yemen. The Sustainable Natural Resource Management Project (SNRMP II), EPA and UNDP; Sana'a-Yemen. 2013.
Al-Khulaidi AW, Al-Sagheer N, Darfaoui E, Al-Ameri SM. Trees of Al Baha Region and surrounding areas. Ministry of Environment, Water and Agriculture, Saudia arabia: FAO; 2016.
Cheung C, De Vantier L. Socotra—a natural history of the islands and their people. In: Van Damme K, editor. Odessey books and guides. Hong Kong: Airphoto International Ltd; 2006.
UNESCO. Socotra Archipelago. Yemen: UNEP-WCMC, World Heritage List; 2008.
Batelka J. Socotra archipelago--a lifeboat in the sea of changes: advancement in Socotran insect biodiversity survey. Acta Entomol Mus Natl Pragae. Prague-Czech Republic. 2012;52(2):1–26.
Testen D. The loss of the Person-Marker" t-" in Jibbali and Socotri. Bull School Orient Afr Stud. University of London, United Kingdom. 1992;55(3):445–50.
Van Damme K, Banfield L. Past and present human impacts on the biodiversity of Socotra Island (Yemen): implications for future conservation. Zool Middle East. 2011;54(sup3):31–88. https://doi.org/10.1080/09397140.2011.10648899.
Abi Umran Musá bin ʿUbayd-Allâh “Maimonides,” (1204). Sharḥ asmāʼ al-ʻuqqār, Investigator: Max Meyerhof (1874-1945). Maktabat al—Thaqafa al-Diniyya: Port said-Egypt; 2000.
Ibn al-Baitar, Abd Allāh ibn Aḥmad (1248). Kitāb Al-Jāmiʿ Li-Mufradāt al-Adwiya Wa-l-Aghdhiya; Dar al-kotob al-Ilmiyah: Beirut; 1992.
Naumkin VV, Sedov AV. Monuments of Socotra. Topoi Orient-Occident. 1993;3(2):569–623.
Al-Hamadani, al-Ḥasan Ibn-Aḥmad (945). Sifat Jazirat al-Arab, Investigator: Muhammad bin Ali Al-Akwa. Yemen: Maktabt al-Irshad, Sana'a; 1990.
Ibn al-Qatta, Ali ibn Jafar (1124). Abniyat al-asma wa-al-afal wa-al-masadir, Investigator: Prof. Ahmed Mohamed Abdel Dayem.; Dar al-Kutub wa-al-Wathaiq al-Qawmiyah, Markaz Tahqiq al-Turath: Egypt; 1999.
Abu al-Khair al-Ishbily (ca: 1200). Kitāb ʻUmdat al-ṭabīb fī maʻrifat al-nabāt li-kull labīb, Investigator: Mohammed al-Arabi al-Khattabi.; Dar al-Gharb al-Islami: Beirut; 1995.
Ibn al-Hasha (1250). Mufeed al-ulom wa mubeed al-humum, Investigator: Georges S. Colin; Ranaud H. J. Morocco: Maṭbūʻāt Maʻhad al-ʻUlūm al-ʻUlyā al-Maghribīyah, al-juzʼ 11; 1941.
Al-Ghassani al-rasoly (1297). Al-Muʻtamad Fī al-Adwiyah al-Mufradah; Dar al-kotob al-Ilmiyah: Beirut; 2000.
Al-Umari, Sahabudden ibn fadlullah (1349). Masālik al-Abṣār fī Mamālik al-Amṣār, Edited by: Kamil S. al-juburi and Mahdi al-Najm.; Dar al-kotob al-Ilmiyah; 2010.
Al-Razi, Abū Bakr Muhammad ibn Zakariyyā. Kitāb al-Ḥāwī fī al-ṭibb, Invest; Mohammed. M. Ismail.; Dar al-kotob al-Ilmiyah; 2000.
Ibn al-Gazar (979). Al-Etimad Fī al-Adwiyah al-Mufradah; Manuscript: Hagia Sophia Library: Turkey. https://www.alukah.net/library/0/89029/. Accessed 10 Aug 2020.
Ibn Sina “Avicenna” (1020). Al-Qanun fi al-Tibb; Dar al-kotob al-Ilmiyah: Beirut; 1999.
Al-Hamawi, Yāqūt ibn ʻAbd Allāh (1224). Mu’jam al-Buldan, Dar Sader.; Beirut; 1977.
Ibn al-Nafis (1288). al-Mūjaz fī al-Tibb, Manuscript. https://www.wdl.org/ar/item/17147/. Accessed 29 Jan 2020.
Al-antaki (1599). Tadhkirat Uli L-al-Bab Wa l-Jami Li-L-‘Ajab al-‘Ujab, copyied book from https://books-library.online/. Accessed 06 Oct 2020.
Al-Ghassani al-Wazir (1610). Hadikat Al-Azhar Fi Mahyyat al-Ushb Wal-Aqqar, Annotated and commented by Al-Khattabi, M. A.; Dar al-Gharb al-Islami: Beirut; 1990.
Serjeant RB. Plants of Dhofar, the southern region of Oman, traditional, economic and medicinal uses., by Anthony G. Miller and Miranda Morris, illustrated by Susanna Stuart-Smith with a foreword by Sultan Qaboos Bin Saif and preface by RE Schultes.; office of the adviser for conservation of the environment, Diwan of Royal Court, Sultanate of Oman. J R Asiat Soc. 1989;121:338–40.
Černý V, Pereira L, Kujanová M, Vašíková A, Hájek M, Morris M, et al. Out of Arabia—the settlement of island Soqotra as revealed by mitochondrial and Y chromosome genetic diversity. Am J Phys Anthropol. 2009;138(4):439–47. https://doi.org/10.1002/ajpa.20960.
Cabo González AM, Bustamante Costa J. En Torno al Drago, Dracaena draco (L.): Notas de Fitonimia Árabe. Al-Andalus Magreb. 2001;8:325–51.
Zeini NT, Abdel-Hamid AM, Soliman AS, Okasha AE. An exploratory study of place-names in Sinai Peninsula, Egypt: a spatial approach. Ann GIS. 2018;24(3):177–94. https://doi.org/10.1080/19475683.2018.1501759.
Pérez RSA. Sobre La presencia de Dracaena draco (L.) L. En Gran Canaria (Islas Canarias): Aportación corólogica, estado actual y significación biogeográfica. Bot Macaronésica. 2003;24:17–38.
Buček A, Habrová H, Maděra P, Král K, Modrý M, Lacina J, Pavliš J. Application of the Czech methodology of biogeographical landscape differentiation in geobiocoenological concept – examples from Cuba, Tasmania and Yemen. J Landsc Ecol. 2015;8(3):51–67.
De Sanctis M, Adeeb A, Farcomeni A, Patriarca C, Saeed A, Attorre F. Classification and distribution patterns of plant communities on Socotra Island, Yemen. Appl Veg Sci. 2013;16(1):148–65.
Habrová H, Buček A. Overview of biotope types of Socotra Island. J Landscape Ecol. 2013;6(3):60–83. https://doi.org/10.2478/jlecol-2014-0004.
Lvončík S, Maděra P, Volařík D, Habrová H, Vrškový B. First proposal of seed regions for frankincense trees (Boswellia Spp.) at Socotra Island. J Landsc Ecol. 2013;6(3):35–45.
Maděra P, Kovář P, Vojta J, Volařík D, Úradníček L, Koblížek J, et al. Vegetation succession along new roads at Soqotra Island (Yemen): effects of invasive plant species and utilization of selected native plant resistance against disturbance. J Landscape Ecol. 2013;6(3):46–59. https://doi.org/10.2478/jlecol-2014-0003.
Kürschner H, Hein P, Kilian N, Hubaishan MA. Diversity and zonation of the forests and woodlands of the mountains of Northern Socotra, Yemen. Englera. 2006;28:11–55.
Habrová H. Geobiocoenological differentiation as a tool for sustainable land-use of Socotra Island. Ekologia. 2004;23:47–57.
Adolt R, Maděra P, Abraham J, Čupa P, Svátek M, Matula R, et al. Field survey of Dracaena cinnabari populations in Firmihin, Socotra Island: methodology and preliminary results. J Landscape Ecol. 2013;6(3):7–34. https://doi.org/10.2478/jlecol-2014-0001.
Adolt R, Habrova H, Madera P. Crown age estimation of a monocotyledonous tree species Dracaena cinnabari using logistic regression. Trees. 2012;26(4):1287–98. https://doi.org/10.1007/s00468-012-0704-9.
Hubálková I. Prediction of dragon’s blood tree (Dracaena cinnabari Balf.) stand sample density on Soqotra Island. J Landscape Ecol. 2011;4(2):5–17.
Adolt R, Pavlis J. Age Structure and growth of Dracaena cinnabari populations on Socotra. Trees. 2004;18(1):43–53. https://doi.org/10.1007/s00468-003-0279-6.
Habrová H, Pavliš J. Dynamic response of woody vegetation on fencing protection in semi-arid areas; case study: pilot exclosure on the Firmihin Plateau, Socotra Island. Saudi J Biol Sci. 2017;24(2):338–46. https://doi.org/10.1016/j.sjbs.2015.09.030.
Hubálková I, Maděra P, Volařík D. Growth dynamics of Dracaena cinnabari under controlled conditions as the most effective way to protect endangered species. Saudi J Biol Sci. 2017;24(7):1445–52. https://doi.org/10.1016/j.sjbs.2015.09.011.
García C, Vasconcelos R. The beauty and the beast: endemic mutualistic interactions promote community-based conservation on Socotra Island (Yemen). J Nat Conserv. 2017;35:20–3. https://doi.org/10.1016/j.jnc.2016.11.005.
Fasola M, Razzetti E, Sindaco R, Ziliani U, Delle Monache D, Pellitteri-Rosa D, et al. Ecological preferences of the endemic reptile community of Socotra. Rendiconti Lincei. Scienze Fisiche e Naturali. 2020;31(3):687–701. https://doi.org/10.1007/s12210-020-00922-w.
Kalivodová H, Culek M, Čermák M, Maděra P, Habrová H. Potential importance of Socotra dragon’s blood tree cloud forests and woodlands for capturing horizontal precipitation. Rendiconti Lincei. 2020;31(3):607–21. https://doi.org/10.1007/s12210-020-00933-7.
Attorre F, Van Damme K. Twenty years of biodiversity research and nature conservation in the Socotra archipelago (Yemen). Rendiconti Lincei. Scienze Fisiche e Naturali. 2020;31(3):563–9. https://doi.org/10.1007/s12210-020-00941-7.
Special thanks to my supervisor Prof. Petr Maděra for his wholehearted scientific guidance, encouragement, and support during the design, data analysis, and write-up phases. I am also grateful for Dr. Kay Van Damme for his valuable comments and encouragement. Thanks to the people of Socotra for their kindness, generosity, and support. Special thanks are given to Dr. Sa’ad Amer, Dr. Nooh Al-Alimi, Ing. Ahmed Al-rumaili and Ing. Ahmed Al-terbhi for their great support, advice, reviewing, and commenting on the meaning of Socotri’s names. My great thanks are extended to all friends who support me during this work.
No funding, as the research is part of my PhD study in Mendel University in Brno, Czech Republic
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Al-Okaishi, A. Exploring the historical distribution of Dracaena cinnabari using ethnobotanical knowledge on Socotra Island, Yemen. J Ethnobiology Ethnomedicine 17, 22 (2021). https://doi.org/10.1186/s13002-021-00452-1
- Socotra Island
- Dum al-akhawin
- Dragon’s Blood Tree