Affiliation:
1. Universidade Federal de Mato Grosso do Sul, Brasil
2. Universidade Federal do Mato Grosso do Sul, Brasil
3. Universidade Estadual Paulista, Brasil
Abstract
Abstract The northwestern portion of the Upper Paraná Atlantic Forest ecoregion is one of the most disturbed and fragmented areas in the Atlantic Forest, and little is known about the local avifauna. In this study, we have described the composition and diversity of the aquatic avifauna of this region and analyzed the patterns of similarity with respect to the seasonal as well as spatial distribution. We used the line transect sampling technique in six distinct humid areas (including lentic and lotic water bodies) during the dry and rainy seasons of 2012 and 2013. A total of 52 species of waterfowl were recorded. The species richness of the studied areas was surprisingly distinct; only seven waterfowl species, namely Cairina moschata (Linnaeus, 1758), Tigrisoma lineatum (Boddaert, 1783), Rosthramus sociabilis (Vieillot, 1817), Aramus guarauna (Linnaeus, 1766), Vanellus chilensis (Molina, 1782), Jacana jacana (Linnaeus, 1766), and Arundinicola leucocephala (Linnaeus, 1764), were common to these six studied areas. This indicated that the other bird species that were observed might be habitat selective. Moreover, the analysis of the composition of birds in the two seasons (dry and rainy) combined with their spatial distributions showed significant dissimilarities between the areas with lotic (river and constructed wetland) and lentic (lagoons) characteristics. Nevertheless, despite the small extent and low total richness of the entire study area, it was found to be home to 1/3 of all freshwater aquatic birds documented in the state of São Paulo, with the record of 5 migratory species and 11 new species added to the northwest of the state. The heterogeneity of local aquatic environments, habitat selection combined with seasonality, and the absence of other humid locations in the surroundings can explain the diversity and distribution of these birds in the water bodies of this uninvestigated Atlantic Forest ecoregion.
Subject
General Agricultural and Biological Sciences
Reference26 articles.
1. Distribuição espacial e sazonal da avifauna em uma área úmida costeira do sul do Brasil;ACCORDI I.A.;Revista Brasileira de Ornitologia,2006
2. Avian and vegetation community structure and this seasonal relationship in the lower Colorado river valley;ANDERSON B.W.;The Condor,1983
3. The role of protected area wetlands in waterfowl habitat conservation: implications for protected area network design;BEATTY W.S.;Biological Conservation,2014
4. Fauna e flora de fragmentos florestais remanescentes da região nordeste do estado de São Paulo.;BISPO A.A.,2012
5. Tópicos sobre humedales subtropicales y templados en Sudamérica.;BLANCO D.E.,1999
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献