Distribution of breeding shorebirds on the Arctic Coastal Plain of Alaska
Distribution of breeding shorebirds on the Arctic Coastal Plain of Alaska
复制标题
阿拉斯加北极沿岸平原繁殖鸻鹬的分布
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
D. Payer
中科院分区：
文献类型：
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作者：
J. A. Johnson;R. Lanctot;B. Andres;J. Bart;Stephen Brown;S. Kendall;D. Payer
关于阿拉斯加北极沿海平原繁殖鸻鹬的分布的现有信息过时、零散且范围有限。在此，我们根据 1998 年至 2004 年间在 407 个研究地块收集的数据描述了 19 种滨鸟的分布。这些信息是在领地建立和孵化早期使用单次访问快速区域搜索技术收集的，在这段时间内，鸟类的社交展示和发声使鸟类高度容易被发现。我们描述了每个物种的存在或不存在，以及物种总数，提供了滨鸟分布的区域视角。我们将鸻鹬鸟分布图与之前的研究进行比较和对比，并描述鸻鹬鸟分布的突出模式。我们对阿拉斯加北极沿海平原鸻鹬鸟的分布和物种数量在纬度和纵向上如何变化的研究表明，大多数鸻鹬鸟物种在波弗特沿海平原生态区（即靠近海岸）的出现频率高于布鲁克斯山麓生态区（即较内陆的地方）。此外，几个物种的出现表明了显着的纵向方向性。调查地点的物种丰富度最高的是博福特沿海平原生态区的西部地区。我们在此提供的大范围分布信息对于评估人类发展和气候变化对北极繁殖滨鸟种群的潜在影响非常有价值。
Available information on the distribution of breeding shorebirds across the Arctic Coastal Plain of Alaska is dated, fragmented, and limited in scope. Herein, we describe the distribution of 19 shorebird species from data gathered at 407 study plots between 1998 and 2004. This information was collected using a single-visit rapid area search technique during territory establishment and early incubation periods, a time when social displays and vocalizations make the birds highly detectable. We describe the presence or absence of each species, as well as overall numbers of species, providing a regional perspective on shorebird distribution. We compare and contrast our shorebird distribution maps to those of prior studies and describe prominent patterns of shorebird distribution. Our examination of how shorebird distribution and numbers of species varied both latitudinally and longitudinally across the Arctic Coastal Plain of Alaska indicated that most shorebird species occur more frequently in the Beaufort Coastal Plain ecoregion (i.e., closer to the coast) than in the Brooks Foothills ecoregion (i.e., farther inland). Furthermore, the occurrence of several species indicated substantial longitudinal directionality. Species richness at surveyed sites was highest in the western portion of the Beaufort Coastal Plain ecoregion. The broad-scale distribution information we present here is valuable for evaluating potential effects of human development and climate change on Arctic-breeding shorebird populations.