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Evaluating the success of reintroduction of Pāteke (Brown Teal) to lake and forest habitats in a predator‐controlled preserve in New Zealand
Ecological Management & Restoration ( IF 1.9 ) Pub Date : 2020-10-08 , DOI: 10.1111/emr.12432
Katie Sheridan , John Waldman

Many of New Zealand’s native bird species have declined due to introduction of exotic mammalian predators and habitat loss. Captive breeding and reintroduction of birds to predator‐controlled environments offer a promising means for species recovery. However, these actions pose challenges to a founder population’s ability to become established. This study evaluates home range attributes and roosting and foraging patterns within Zealandia Ecosanctuary (Wellington) of Pāteke (Brown Teal) with the goal of assessing suitability of forested, predator‐controlled sanctuaries as future Pāteke release sites, a habitat type currently considered as unsuitable to the species or of marginal quality. VHF telemetry and motion‐sensing cameras were used to track seven forest‐dwelling Pāteke (‘bush Pāteke’) and three lake‐dwelling Pāteke (‘lake Pāteke’). Lake Pāteke home range size (mean = 3.52 ha) was significantly smaller than for bush Pāteke (mean = 24.71 ha). Mean roost distance to the nearest lake was significantly shorter for lake Pāteke (mean = 3 m) than that of bush Pāteke (mean = 643 m). Two estimates of the percentage of lake edge to forest stream foraging distance percentage were significantly greater for lake Pāteke (mean = 56.1% or 59.0%) than that of bush Pāteke (mean = 5.3% or 5.7%). Forested habitats provide suitable release sites for Pāteke provided that several conditions are met: predator control must be ongoing; a flock site must be available; supplemental feeders should be available temporarily upon release; and the site must be large enough to accommodate at least 50 pairs of Pāteke.

中文翻译:

评估新西兰捕食者控制的保护区将Pāteke(棕绿色)重新引入湖泊和森林栖息地的成功性

由于引入了外来哺乳动物捕食者和栖息地的丧失,新西兰的许多本地鸟类物种已减少。圈养和将鸟类引入捕食者控制的环境为物种恢复提供了一种有希望的手段。但是,这些行动对创始人群体的确立能力提出了挑战。这项研究评估了Pāteke(布朗蒂尔)的西兰西亚生态保护区(惠灵顿)内的家庭范围属性以及栖息和觅食模式,目的是评估森林,捕食者控制的保护区是否适合作为未来的Pāteke释放地点,目前被认为不适合物种或边缘质量。甚高频遥测和运动感应摄像机被用来跟踪七个居住在森林中的帕特克(“ bushPāteke”)和三个居住在湖中的帕特克(“ lakePāteke”)。帕特克湖的家园范围(均值= 3.52公顷)明显小于布什帕特克(均值= 24.71公顷)。帕特克湖(平均= 3 m)到最近湖泊的平均栖息距离明显短于布什帕特克(平均= 643 m)。对帕特克湖的湖泊边缘占森林溪流觅食距离百分比的两个估计值(均值分别为56.1%或59.0%)明显大于布什帕特克湖(均值5.3%或5.7%)。只要满足以下几个条件,森林栖息地便是帕特克(Pāteke)的合适释放场所:必须继续控制捕食者;羊群场所必须可用;释放时应临时提供辅助喂料器;并且场地必须足够大,以容纳至少50对Pāteke。71公顷)。帕特克湖(平均= 3 m)到最近湖泊的平均栖息距离明显短于布什帕特克(平均= 643 m)。对帕特克湖的湖泊边缘占森林溪流觅食距离百分比的两个估计值(均值分别为56.1%或59.0%)明显大于布什帕特克湖(均值5.3%或5.7%)。只要满足以下几个条件,森林栖息地便是帕特克(Pāteke)的合适释放场所:必须继续控制捕食者;羊群场所必须可用;释放时应临时提供辅助喂料器;并且场地必须足够大,以容纳至少50对Pāteke。71公顷)。帕特克湖(平均= 3 m)到最近湖泊的平均栖息距离明显短于布什帕特克(平均= 643 m)。对帕特克湖的湖泊边缘占森林溪流觅食距离百分比的两个估计值(均值分别为56.1%或59.0%)明显大于布什帕特克湖(均值5.3%或5.7%)。只要满足以下几个条件,森林栖息地就可以为帕特克提供合适的释放场所:必须持续进行捕食者控制;羊群场所必须可用;释放时应临时提供辅助喂料器;并且场地必须足够大,以容纳至少50对Pāteke。对帕特克湖的湖泊边缘占森林溪流觅食距离百分比的两个估计值(均值分别为56.1%或59.0%)明显大于布什帕特克湖(均值5.3%或5.7%)。只要满足以下几个条件,森林栖息地便是帕特克(Pāteke)的合适释放场所:必须继续控制捕食者;羊群场所必须可用;释放时应临时提供辅助喂料器;并且场地必须足够大,以容纳至少50对Pāteke。对帕特克湖的湖泊边缘占森林溪流觅食距离百分比的两个估计值(均值分别为56.1%或59.0%)明显大于布什帕特克湖(均值5.3%或5.7%)。只要满足以下几个条件,森林栖息地便是帕特克(Pāteke)的合适释放场所:必须继续控制捕食者;羊群场所必须可用;释放时应临时提供辅助喂料器;并且场地必须足够大,以容纳至少50对Pāteke。释放时应临时提供辅助喂料器;并且场地必须足够大,以容纳至少50对Pāteke。释放时应临时提供辅助喂料器;并且场地必须足够大,以容纳至少50对Pāteke。
更新日期:2020-10-13
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