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      Using fish assemblages in different habitats to develop a management plan for the Upper Essequibo Conservation Concession, Guyana

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          Abstract

          The Upper Essequibo Conservation Concession is a reserve in central-eastern Guyana managed by Conservation International. The site is uninhabited by people and poorly studied. The first scientific fish survey was in 2007 in conjunction with the filming of the BBC nature documentary Lost Land of the Jaguar. Aquatic habitats were primarily flowing water, ranging from the main channel of the Essequibo River to small forest creeks. Ponds and seasonally flooded forests were uncommon. Large predatory fishes were abundant in the Essequibo River. Fishes tolerant of low oxygen levels were common in flooded forests and small forest creeks. There was zero similarity between the fish assemblages of the Essequibo River and flooded forests / small forest creeks. The rest of the habitats and fish assemblages formed a continuum between these extremes. Imminent threats to the Upper Essequibo Conservation Concession include logging, mining, and over-fishing. Because of the heterogeneous distribution of fish assemblages, and because each threat will differentially affect different habitats, a two-pronged approach focusing on the ends of the habitat / fish assemblage continuum should be implemented in order to conserve the entire fish biodiversity of the Upper Essequibo Conservation Concession.

          Translated abstract

          La Upper Essequibo Conservation Concession es una reserva en Guyana centro-oriental, administrada por Conservation International. El sitio está deshabitada por personas y mal estudiado. El primer estudio científico de peces fue en 2007 junto con la filmación del BBC documental naturaleza Lost Land of the Jaguar. Hábitats acuáticos fueron el canal principal del Río Essequibo a quebradas pequeñas del bosque. Lagos pequeños y bosques inundados estacionalmente eran infrecuentes. Grandes peces depredadores abundaban en el Río Essequibo. Peces tolerantes con bajos niveles de oxígeno eran comunes en quebradas pequeñas del bosque y bosques inundados. Hubo cero similitud entre las comunidades de peces del Río Essequibo y bosques inundados / quebradas pequeñas del bosque. El resto de los hábitats y comunidades de peces forma un continuum entre estos extremos. Las amenazas inminentes a la Upper Essequibo Conservation Concession incluyen deforestación, la minería y sobrepesca. Debido a la distribución heterogénea de comunidades de peces y porque cada amenaza diferencialmente afectarán a diferentes hábitats, un enfoque doble centrándose en los extremos del hábitat / comunidades de peces continuum debe aplicarse con el fin de conservar la biodiversidad de peces entero de la Upper Essequibo Conservation Concession.

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          EstimateS: Statistical estimation of species richness and shared species from samples

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            Temporal Variability Patterns and the Distributional Patterns of Stream Fishes

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              The freshwater fishes of British Guiana, including a study of the ecological grouping of species and the relation of the fauna of the plateau to that of the lowlands / by C.H. Eigenmann.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                bn
                Biota Neotropica
                Biota Neotrop.
                Instituto Virtual da Biodiversidade | BIOTA - FAPESP (Campinas )
                1676-0611
                December 2013
                : 13
                : 4
                : 260-268
                Affiliations
                [1 ] USA
                [2 ] Daniel P. Haerther Center for Conservation and Research USA
                [3 ] Guyana
                Article
                S1676-06032013000400260
                10.1590/S1676-06032013000400023
                3fedfc8f-548b-4ade-b277-0fa6c0718b6c

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1676-0603&lng=en
                Categories
                BIODIVERSITY CONSERVATION

                Animal science & Zoology
                aquatic continuum,flooded forests,nature documentary,rapid assessment,fish,continuum acuático,bosques inundados,documental de naturaleza,evaluación rápida,peces

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