Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/49222

TítuloFine-scale determinants of conservation value of river reaches in a hotspot of native and non-native species diversity
Autor(es)Maceda-Veiga, Alberto
Baselga, Andrés
Sousa, Ronaldo Gomes
Vilà, Montserrat
Doadrio, Ignacio
Sostoa, Adolfo de
Palavras-chaveDiversity patterns
Conservation trade-offs
Fluvial reserves
Threatened taxa
Natura 2000
Environmental degradation
Data1-Jan-2017
EditoraElsevier
RevistaScience of the Total Environment
Resumo(s)Global freshwater biodiversity is declining at unprecedented rates while non-native species are expanding. Examining diversity patterns across variable river conditions can help develop better management strategies. However, many indicators can be used to determine the conservartion value of aquatic communities, and little is known of how well they correlate to each other in making diagnostics, including when testing for the efficacy of protected areas. Using an extensive data set (99,700km2, n=530 sites) across protected and unprotected river reaches in 15 catchments of NE Spain, we examine correlations among 20 indicators of conservation value of fish communities, including the benefits they provide to birds and threatened mammals and mussels. Our results showed that total native fish abundance or richness correlated reasonably well with many native indicators. However, the lack of a strong congruence led modelling techniques to identify different river attributes for each indicator of conservation value. Overall, tributaries were identified as native fish refugees, and nutrient pollution, salinization, low water velocity and poor habitat structure as major threats to the native biota. We also found that protected areas offered limited coverage to major components of biodiversity, including rarity, threat and host-parasite relationships, even though values of non-native indicators were notably reduced. In conclusion, restoring natural hydrological regimes and water chemical status is a priority to stem freshwater biodiversity loss in this region. A complementary action can be the protection of tributaries, but more studies examining multiple components of diversity are necessary to fully test their potential as fluvial reserves in Mediterranean climate areas.
Tipoarticle
URIhttp://hdl.handle.net/1822/49222
DOI10.1016/j.scitotenv.2016.09.097
ISSN0048-9697
e-ISSN1879-1026
Arbitragem científicayes
AcessorestrictedAccess
Aparece nas coleções:DBio - Artigos/Papers

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
Maceda-Veiga et al. 2017.pdf1,46 MBAdobe PDFVer/Abrir  Solicitar cópia ao autor!

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu Currículo DeGóis