Can severely fragmented patches of riparian vegetation still be important for arid-land bird diversity? Export

@article{citeulike:3658858, abstract = {The vegetation of riparian habitats is often distinct from that of the surrounding landscape, thus representing unique habitat for a variety of biota. Although highly mobile, birds often exhibit distinct species assemblages associated with habitat. Therefore, degradation or removal of riparian habitat, particularly in arid environments, may threaten bird diversity. Along the Vaal River, South Africa, mining and agriculture have reduced natural riparian habitat to ca. 9\% of its former extent in the Northern Cape Province. We surveyed bird assemblages within intact riparian, savanna and bush-thickened habitats along the Vaal River to ascertain their importance to bird diversity. Avian abundance and species richness did not differ between the three habitats. Species composition of riparian bird assemblages was significantly different to that of savanna and bush-thickened habitats, however, which were not significantly different from each other, and more species were characteristic of riparian habitat (17 species) than bush-thickened (seven species) or savanna (one species) habitats. Of three species reaching the south-western limit of their African distribution, all occurred in riparian habitat. Thus, despite its fragmented nature, the riparian vegetation on the Vaal still supports an important component of avian diversity, and a landscape-level approach is required to manage this relatively rich, arid-land, river.}, author = {Seymour, C. and Simmons, R.}, citeulike-article-id = {3658858}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.jaridenv.2008.07.014}, citeulike-linkout-1 = {http://linkinghub.elsevier.com/retrieve/pii/S0140196308002164}, doi = {10.1016/j.jaridenv.2008.07.014}, issn = {01401963}, journal = {Journal of Arid Environments}, keywords = {arid, assemblages, bird, corridor, diamond, diversity, fragmentation, mining, riparian, savanna}, month = {December}, number = {12}, pages = {2275--2281}, posted-at = {2008-11-22 05:41:54}, priority = {2}, title = {Can severely fragmented patches of riparian vegetation still be important for arid-land bird diversity?}, url = {http://dx.doi.org/10.1016/j.jaridenv.2008.07.014}, volume = {72}, year = {2008} }

TY - JOUR ID - citeulike:3658858 L3 - citeulike-article-id:3658858 N2 - The vegetation of riparian habitats is often distinct from that of the surrounding landscape, thus representing unique habitat for a variety of biota. Although highly mobile, birds often exhibit distinct species assemblages associated with habitat. Therefore, degradation or removal of riparian habitat, particularly in arid environments, may threaten bird diversity. Along the Vaal River, South Africa, mining and agriculture have reduced natural riparian habitat to ca. 9% of its former extent in the Northern Cape Province. We surveyed bird assemblages within intact riparian, savanna and bush-thickened habitats along the Vaal River to ascertain their importance to bird diversity. Avian abundance and species richness did not differ between the three habitats. Species composition of riparian bird assemblages was significantly different to that of savanna and bush-thickened habitats, however, which were not significantly different from each other, and more species were characteristic of riparian habitat (17 species) than bush-thickened (seven species) or savanna (one species) habitats. Of three species reaching the south-western limit of their African distribution, all occurred in riparian habitat. Thus, despite its fragmented nature, the riparian vegetation on the Vaal still supports an important component of avian diversity, and a landscape-level approach is required to manage this relatively rich, arid-land, river. IS - 12 JF - Journal of Arid Environments SN - 01401963 EP - 2281 TI - Can severely fragmented patches of riparian vegetation still be important for arid-land bird diversity? VL - 72 SP - 2275 KW - arid KW - assemblages KW - bird KW - corridor KW - diamond KW - diversity KW - fragmentation KW - mining KW - riparian KW - savanna AU - Seymour, C AU - Simmons, R PY - 2008/12// UR - http://dx.doi.org/10.1016/j.jaridenv.2008.07.014 ER -