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首页> 外文期刊>The wilson journal of ornithology >EFFECTS OF STOP-LEVEL HABITAT CHANGE ON CERULEAN WARBLER DETECTIONS ALONG BREEDING BIRD SURVEY ROUTES IN THE CENTRAL APPALACHIANS
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EFFECTS OF STOP-LEVEL HABITAT CHANGE ON CERULEAN WARBLER DETECTIONS ALONG BREEDING BIRD SURVEY ROUTES IN THE CENTRAL APPALACHIANS

机译：栖息地变化对中阿巴拉契亚鸟调查路线沿线铜锣巡游检测的影响

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摘要

We examined the effects of habitat change on Cerulean Warbler (Dendroica cerulea) populations at stops along Breeding Bird Survey (BBS) routes in the central Appalachians. We used aerial photographs to compare early (1967/1971), middle (1982/1985), and late (2000/2003) periods and compared 1992 and 2001 National Land Cover Data (NLCD). Mean Cerulean Warbler detections per stop decreased at 68 BBS stops between the early (0.05) and middle (0.01) time periods and their distribution became more restricted (15 vs. 3% of stops), but the amount of deciduous/mixed forest increased. Mean detections at 240 stops decreased from the middle (0.09) to the late (0.06) time periods, but the deciduous/ mixed forest land cover and fragmentation metrics did not change. The amounts of deciduous/mixed forest, core forest area, and edge density in the NLCD analysis decreased from 1992 to 2001, whereas the amount of non-forest land cover increased. The number of Cerulean Warbler detections did not change (1992 = 0.08,2001 = 0.10; P = 0.11). The lack of concordance between Cerulean Warbler detections and broad habitat features suggests that smaller, microhabitat features may be most important in affecting Cerulean Warbler breeding habitat suitability.
机译：我们研究了中部阿巴拉契亚山脉沿繁殖鸟类调查（BBS）路线停靠点对天蓝莺（Dendroica cerulea）种群的栖息地变化的影响。我们使用航空照片比较了早期（1967/1971），中期（1982/1985）和后期（2000/2003），并比较了1992年和2001年的国家土地覆盖数据（NLCD）。在早期（0.05）和中期（0.01）期间，平均每个站点的Cerulean Warbler检出率降低了68个BBS站点，并且它们的分布更加受限（15个站点对3％的站点），但是落叶/混交林的数量增加了。从中段（0.09）到后期（0.06）期间，平均检出量为240次，但落叶/混合林地覆盖率和破碎度指标没有变化。 NLCD分析中的落叶/混交林数量，核心森林面积和边缘密度从1992年到2001年减少，而非林地的土地覆盖量增加。蔚蓝莺的检测次数没有变化（1992 = 0.08，2001 = 0.10； P = 0.11）。天蓝莺的检测与广泛的栖息地特征之间缺乏一致性，这表明较小的微生境特征可能对影响天蓝莺的繁殖栖息地适应性最重要。

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  • 来源
    《The wilson journal of ornithology》 |2011年第4期|p.699-708|共10页
  • 作者

    PATRICK M. McELHONE; PETRA BOHALL WOOD; DEANNA K. DAWSON;

  • 作者单位

    West Virginia Cooperative Fish and Wildlife Research Unit, Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV 26506, USA;

    U.S. Geological Survey, West Virginia Cooperative Fish and Wildlife Research Unit, Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV 26506, USA;

    U.S. Geological Survey, West Virginia Cooperative Fish and Wildlife Research Unit, Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV 26506, USA;

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