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首页> 外文期刊>Avian research >Waterbird use of farm dams in south-eastern Australia: abundance and influence of biophysical and landscape characteristics
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Waterbird use of farm dams in south-eastern Australia: abundance and influence of biophysical and landscape characteristics

机译：澳大利亚东南部水坝对水坝的利用：生物物理和景观特征的丰度及其影响

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BackgroundWhile agriculture has taken much environmental water in Australia’s Murray-Darling Basin, agricultural expansion has resulted in a vast number of farm dams, almost three-quarters of a million in the Murray-Darling Basin alone. MethodsOver a summer we studied (1) waterbird abundance and species richness and (2) the influence of biophysical and landscape characteristics across 49 farm dams at a large mixed-enterprise farm in northern Victoria on the southern reach of the Murray-Darling Basin. ResultsOn average, dams were found to host 27.1?±?71.1 individuals/ha and 1.8?±?2.9 species per pond. Such densities are comparable to those on natural wetlands. Dam surface?area and perimeter and amount of vegetation were positively and strongly correlated with the Rallidae density (birds/ha), but no other parameters were strongly correlated with any other functional group. The landscape in which the dams were embedded had a highly significant effect ( p ConclusionsOur research needs to be complemented with further studies in other parts of the Basin and on other taxa, but given at our site they supported similar densities of individuals and species to natural wetlands, and given the fact that there are 710,539 farm dams in the Murray-Darling Basin, which hosts much of Australia’s waterbird fauna, it is reasonable to suggest that farm dams are overlooked, and possibly very important, avian biodiversity hotspots. It also highlights the importance of a landscape setting, in which dams are situated, on the number of birds using the dams.
机译：背景技术虽然在澳大利亚的默里达令河流域农业消耗了大量的环境水，但农业扩张导致了大批农田水坝的形成，仅在默里-达令盆地百万水坝中就有四分之三。方法在整个夏天，我们研究了（1）水鸟的丰度和物种丰富度，以及（2）维多利亚北部大型大型混合企业农场中49个农场水坝的生物物理和景观特征对墨累达令盆地南部的影响。结果平均而言，水坝被发现拥有每公顷27.1±71.1个人/公顷和1.8±2.9个物种。这样的密度与天然湿地上的密度相当。大坝表面面积和周长以及植被数量与Rallidae密度（鸟类/公顷）成正相关，而其他参数与其他任何功能组均无强相关。筑坝的景观具有非常重要的作用（结论）我们的研究需要在盆地其他地区和其他分类单元上进行进一步的研究来补充，但在我们的研究地点，它们支持的个人和物种密度与自然相似。湿地，考虑到墨累达令盆地有710,539个农业大坝，该水坝是澳大利亚许多水鸟动物的寄宿地，因此可以合理地认为，这些农业大坝被忽视了，而且可能是非常重要的禽类生物多样性热点。对于使用水坝的鸟类数量来说，水坝所在的景观环境的重要性。

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