Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/17374
Título: | Rapid decline of the greater European peaclam at the periphery of its distribution |
Autor(es): | Sousa, Ronaldo Gomes Ilarri, Martina Souza, Allan T. Antunes, Carlos Guilhermino, Lúcia |
Palavras-chave: | Conservation Extirpation Heat wave Minho River Pisidium amnicum |
Data: | Abr-2011 |
Editora: | EDP Sciences |
Revista: | Annales de Limnologie |
Resumo(s): | Extirpation or even extinction of freshwater invertebrate species is a neglected conservation issue; declines in abundance and spatial distribution for freshwater invertebrates are far less documented than for vertebrate species. In the Minho River tidal freshwater wetlands (northwest of Iberian Peninsula), a rapid decline in density and biomass of the bivalve Pisidium amnicum was recorded at 16 different sites over seven years, from 2004 to 2010, without any sign of a potential recovery. Mean density values reached more than 80 ind.mx2 in 2004, but declined to less than 1 ind.mx2 in 2009 and 2010. An identical declining trend was observed for biomass. A significant reduction in the spatial distribution also occurred. The abiotic changes resulting from the 2005 heat wave and possibly the negative interactions imposed by the non-indigenous invasive bivalve Corbicula fluminea were the main factors responsible for the declining trends. Given the very low density, P. amnicum is facing a serious risk of extirpation in this ecosystem and conservational measures are urgently needed. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/17374 |
DOI: | 10.1051/limn/2011041 |
ISSN: | 0003-4088 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DBio - Artigos/Papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Sousa et al. 2011c.pdf | 532,71 kB | Adobe PDF | Ver/Abrir |