Fig. 4From: Integrated approach to the understanding of the degradation of an urban river: local perceptions, environmental parameters and geoprocessingTrophic State Indices (TSI), lower Capibaribe River in São Lourenço da Mata, Pernambuco, Brazil. Source: CPRH. Trophic State Indices (TSI) recorded between 1991 and 2013 at monitoring station CB-72 on the lower Capibaribe River in São Lourenço da Mata, Pernambuco, Brazil. Source: CPRH. EU = eutrophic, SE = supereutrophic, HE = hypereutrophicBack to article page