Response of Waterbirds to Number of Wetlands in the Prairie Pothole Region of North Dakota, U.S.A.
Response of Waterbirds to Number of Wetlands in the Prairie Pothole Region of North Dakota, U.S.A.
复制标题
美国北达科他州草原坑洞地区水鸟对湿地数量的反应
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
John W. Solberg
中科院分区：
文献类型：
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作者：
N. D. Niemuth;John W. Solberg
摘要我们研究了1980-2000年美国北达科他州草原坑洼区湿地数量与五种水鸟和一种水鸟发生的关系。13条繁殖鸟类调查路线的数据提供了一个区域密度和分布的指数（Podiacumbus podiceps），黑燕鸥（Chlidonias尼日尔），美洲盐卤（Botaurus lentiginosus），北方针尾（Anas acuta），索拉（Porzana卡罗莱纳）和American Coot（Fulica americana），而年度水禽繁殖地人口和栖息地调查的69个部分提供了区域湿地可用性的指数。湿地和鸟类的数量在不同年份之间存在差异，所有6种鸟类的密度和分布都与湿地数量呈正相关。相关性较弱时，湿地的数量滞后一年，这表明水鸟分布的变化响应水的可用性，而不是响应本地。在对草原坑洼区水鸟进行监测和管理时，应考虑水鸟栖息地和数量的时空变化。
Abstract We examined the relationship between number of wetlands and occurrence of five waterbird and one waterfowl species in the Prairie Pothole Region of North Dakota, USA, from 1980-2000. Data from 13 Breeding Bird Survey routes provided an index to regional density and distribution of Pied-billed Grebe (Podilymbus podiceps), Black Tern (Chlidonias niger), American Bittern (Botaurus lentiginosus), Northern Pintail (Anas acuta), Sora (Porzana carolina), and American Coot (Fulica americana), while 69 segments from annual Waterfowl Breeding Ground Population and Habitat Surveys provided an index to regional wetland availability. Numbers of wetlands and birds varied among years, and density and distribution of all six species showed a strong positive correlation with number of wetlands. Correlations were weaker when the number of wetlands was lagged one year, suggesting that waterbird distributions shift in response to water availability rather than respond locally. Spatial and temporal variation of waterbird habitat and numbers should be considered in monitoring and management of waterbirds in the Prairie Pothole Region.