Forum für Killifische, Cichliden und Welse - KCW-Forum
»
Verschiedenes
»
Biotopbeiträge
»
Fish Biodiversity Assessment of the Rapids of Mboungou Badouma and Doumé Ramsar Site and Surrounding Areasin Gabon
Acknowledgments The authors of this report would like to express their gratitude to the community leaders, local authorities and citizens of the villages and towns visited during this expedition for their welcome and tremendous support and assistance in facilitating both the successful sampling and the well-being of the researchers. Special recognition goes to the staf from the Wildlife Conservation Society (WCS) and the Compagnie Equatoriale des Bois/Precious Wood (CEB) for their critical logistical support before, during and following the expedition. Without their support, particularly as the team had to deal with unexpected delays of transportation of equipment to the feld site, the outcomes of this trip would not be as fruitful. The authors also wish to thank all of the experts who contributed to this efort through their collaborative taxonomic guidance. Dr. Brian Sidlauskas’participation was facilitated and sponsored by the Gabon-Oregon Center and Oregon State University, and we are grateful of this support as his participation greatly enriched both feld and subsequent lab work. Executive Summary The Nature Conservancy (TNC) in association with the Institut de Recherches Agronomiques et Forestières (IRAF) of the Gabonese Centre National de la Recherche Scientifque et Technologique (CENAREST) co-sponsored a fsh sampling expedition for three weeks in September 2014, conducted by experts from multiple institutions. The sampling expedition took place in Gabon, on a section of the Ogooué River and some of its tributaries near Lastoursville, which included sections of the Rapides de Mboungou Badouma et de Doumé Ramsar site (Rapids of Mboungou Badouma and Doumé) (Figure 1). The main objective of the expedition was to sample and characterize fsh diversity within and around the Ramsar site to provide baseline assessments of the site’s biodiversity and freshwater habitat. The fndings of the expedition detailed in this report can be used by decision makers, governmental authorities, non-governmental organizations, local communities, and other stakeholders to inform and enhance freshwater ecosystem management and conservation in the Ogooué River basin. Additional research in the area is warranted and should focus on characterizing the upper sections of the Ramsar site, and better understanding seasonal changes in the river system, biogeographic patterns, local exploitation and other ecological processes. In total, the team performed 71 fshing events at 31 sites over the course of the 3 weeks. A total of 2,876 fsh were collected, totaling to a minimum of 91 distinct species (known species including non-described species) representing 18 families of fshes. Signifcant preliminary results from the expedition include: A partial baseline fsh biodiversity survey for the Ramsar site The sample collections provide a partial baseline fsh biodiversity survey for parts of the Rapids of Mboungou Badouma and Doumé Ramsar site, and for the region more broadly. The area has historically been minimally sampled despite notable collections by early explorers. The collection of at least 91 distinct species (and a number of specimens that require further taxonomic attention) will serve as a valuable dataset for future conservation, research and management eforts. Resampling the historically signifcant site at Doumé This was the frst sampling expedition in the Doumé area since 1876–1877, when Alfred Marche sampled a total of 42 species belonging to ten families. During the September 2014 sampling, three specimens of an undescribed“short-headed”Paramormyrops species were captured; and a single individual of unknown species was also taken in the fsh traps at Doumé. While these collections represent a wide taxonomic swath of the fsh fauna at Doumé, they are an incomplete sample. Notably, of the twelve species Sauvage reported from Marche’s Doumé collection, only two were recovered by this expedition at Doumé.
Pdf zum runterladen [[File:gabon-fish-biodiversity-report.pdf]]
notho2
hat folgende Dateien an diesen Beitrag angehängt
Aufgrund eingeschränkter Benutzerrechte werden nur die Namen der Dateianhänge angezeigt Jetzt anmelden!