نتایج جستجو برای: avifauna
تعداد نتایج: 984 فیلتر نتایج به سال:
An important variable in the amplification and escape from the enzootic cycle of the arboviral encephalitides is the degree of contact between avian hosts and mosquito vectors. To analyze this interaction in detail, blood-fed mosquitoes that were confirmed vectors of eastern equine encephalomyelitis (EEE) virus were collected in 2002 from an enzootic site in central Alabama during the time this...
Analysis of fossil birds from the Oligocene Jebel Qatrani Formation in the Fayum depression of Egypt, site of the oldest known hominoid primates, allows precise paleoenvironmental reconstruction of the climatic and biotic conditions that influenced some of the earliest stages of hominoid evolution. Unlike the fossil mammals of the Fayum, which belong largely to extinct groups, most of the birds...
The northeast Brazilian state of Alagoas harbors a rather diverse, and one the world’s most threatened, avifauna. However, knowledge about its avifauna is currently scattered on several publications state’s birds have never been comprehensively assembled into checklist. To fill this shortfall, we present here first critical review all available bird records for Alagoas. We list 520 species reco...
Wetland ecosystems are essential for maintaining biological diversity and significant elements of the global landscape. However, biodiversity wetlands has been significantly reduced by more than 50% worldwide due to rapid expansion urban areas other human activities. The aforementioned factors have resulted in drastic antagonistic effects on species composition, particularly aquatic avifauna. d...
Understanding the multifaceted relationship between biodiversity and landuse intensity is key to conservation policy. To begin to characterize this relationship in a tropical region, we investigated the bird fauna in an agricultural landscape in southern Costa Rica. Landsat Thematic Mapper (TM) data show that about 27% of the land remains forested in the 15 km radius study region encompassing o...
The study of the nesting birds coastal riparian zones in Great Kabylia Algeria, allowed us to identify 45 species birds, belonging 12 orders and 26 families. richest site terms is Takdempt (31 species). lowest diversity noted at level Boudouaou wadi with 16 species. values Shannon-Weaver index (H') for all sites are quite high (≥3 bits). Concerning global abundance avifauna, that represents hig...
Avifauna is of great importance in anthropogenic, natural biocenoses. In order to regulate and protect them, it necessary investigate firstly the composition ornithofauna, secondly specific distribution, thirdly population activity species composition. We studied spatial temporal structure avifauna vicinity village Meryasovo Baymaksky district. have identified 34 bird belonging 10 orders 22 fam...
Anthropogenic debris in the world's oceans and coastal environments is a pervasive global issue that has both direct and indirect impacts on avifauna. The number of bird species affected, the feeding ecologies associated with an increased risk of debris ingestion, and selectivity of ingested debris have yet to be investigated in most of Australia's coastal and marine birds. With this study we a...
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