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首页> 外文期刊>The Journal of Raptor Research >SHORT-TERM EFFECTS OF TIMBER HARVEST AND WEATHER ON NORTHERN GOSHAWK REPRODUCTION IN NORTHERN IDAHO
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SHORT-TERM EFFECTS OF TIMBER HARVEST AND WEATHER ON NORTHERN GOSHAWK REPRODUCTION IN NORTHERN IDAHO

机译：木材收割和天气对北爱达荷州北部戈肖克繁殖的短期影响

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摘要

Nesting habitat of the Northern Goshawk (Accipiter gentilis) in North America has been associated with the amount of mature, closed-canopy forest in the nesting area; however, few studies have experimentally tested the effects of timber harvest oil goshawk reproduction. We tested the effects of clear-cutting within goshawk nesting areas on reoccupancy and nesting success for two years following treatments. We also included habitat and weather variables as potential covariates in our models. We found no treatment effects oil goshawk reoccupancy, nesting success, or number of fledglings between harvested and unharvested nesting areas. Our models suggested goshawk breeding area reoccupancy was a function of the amount of potential nesting habitat available in the 170-ha area surrounding the nest; goshawks reoccupied breeding areas if they contained >39% potential nesting habitat following harvest. Nesting success was correlated with mean April precipitation and January daily temperatures. Our results suggested that, in the short terns, goshawks were more likely to attempt nesting after disturbance if >39% of the 170-ha area around their nest was left in potential nesting habitat; however, our models suggested that once goshawks attempt nesting, nesting success was more likely to he a function of winter and spring weather.
机译：北美北部苍鹰（Accipiter gentilis）的筑巢栖息地与筑巢区成熟的封闭冠层森林的数量有关。然而，很少有研究通过实验来测试木材收获油苍鹰繁殖的影响。在治疗后的两年中，我们测试了苍鹰筑巢区域内的清晰切割对再利用和筑巢成功的影响。我们还将生境和天气变量作为模型中的潜在协变量。我们没有发现对苍鹰再用，筑巢成功或已收获和未收获筑巢区之间幼雏数量的治疗效果。我们的模型表明，苍鹰繁殖区的再利用与巢周围170公顷区域中可用的潜在巢生境数量有关。如果苍鹰在收获后包含了> 39％的潜在筑巢生境，它们将重新占领繁殖区。筑巢成功与4月的平均降水量和1月的每日温度相关。我们的结果表明，在短期燕鸥中，如果巢周围170公顷以上的区域中有39％以上留在潜在的栖息地中，苍鹰更容易在干扰后尝试筑巢;但是，我们的模型表明，苍鹰一旦尝试筑巢，则筑巢成功的可能性就取决于冬季和春季。

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