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Seasonal Shifts in Nocturnal Habitat Use by Coastal Bat Species
Journal of Wildlife Management ( IF 2.3 ) Pub Date : 2021-05-06 , DOI: 10.1002/jwmg.22060
Kyle E. Shute 1 , Susan C. Loeb 2 , David S. Jachowski 1
Affiliation  

Sensitivity of bats to land use change depends on their foraging ecology, which varies among species based on ecomorphological traits. Additionally, because prey availability, vegetative clutter, and temperature change throughout the year, some species may display seasonal shifts in their nocturnal habitat use. In the Coastal Plain of South Carolina, USA, the northern long-eared bat (Myotis septentrionalis), southeastern myotis (Myotis austroriparius), tri-colored bat (Perimyotis subflavus), and northern yellow bat (Lasiurus intermedius) are species of conservation concern that are threatened by habitat loss. Our objective was to identify characteristics of habitat used by these species during their nightly active period and compare use between summer and winter. We conducted acoustic surveys at 125 sites during May–August and at 121 of the same 125 sites December–March 2018 and 2019 in upland forests, bottomland forests, fields, ponds, and salt marsh and used occupancy models to assess habitat use. The northern long-eared bat and southeastern myotis (i.e., myotis bats) used sites that were closer to hardwood stands, pine stands, and fresh water year-round. We did not identify any strong predictors of tri-colored bat habitat use in summer, but during winter they used bottomland forests, fields, and ponds more than salt marsh and upland forests. During summer and winter, northern yellow bats used sites close to fresh water and salt marsh. Additionally, during summer they used fields, ponds, and salt marsh more than upland and bottomland forests, but in winter they used bottomland forests, fields, and ponds more than upland forest and salt marsh. Our results highlight important land cover types for bats in this area (e.g., bottomland forests, ponds, and salt marsh), and that habitat use changes between seasons. Accounting for and understanding how habitat use changes throughout the year will inform managers about how critical habitat features may vary in their importance to bats throughout the year. © 2021 The Wildlife Society.

中文翻译:

沿海蝙蝠物种夜间栖息地使用的季节性变化

蝙蝠对土地利用变化的敏感性取决于它们的觅食生态,其基于生态形态特征在物种之间有所不同。此外,由于全年的猎物可用性、植被杂乱和温度变化,某些物种的夜间栖息地使用可能会出现季节性变化。在美国南卡罗来纳州沿海平原,北部长耳蝙蝠(Myotis septentrionalis)、东南部蝙蝠(Myotis austroriparius)、三色蝙蝠(Perimyotis subflavus)和北部黄蝙蝠(Lasiurus intermedius )) 是受栖息地丧失威胁的受保护物种。我们的目标是确定这些物种在夜间活动期间使用的栖息地特征,并比较夏季和冬季的使用情况。我们在 5 月至 8 月期间在 125 个地点进行了声学调查,并于 2018 年 12 月至 3 月和 2019 年在同一 125 个地点中的 121 个地点进行了高地森林、低地森林、田地、池塘和盐沼的声学调查,并使用占用模型来评估栖息地使用。北部长耳蝙蝠和东南部蝠鲼(即 myotis bats)全年使用靠近硬木林、松林和淡水的地点。我们没有发现夏季使用三色蝙蝠栖息地的任何强有力的预测因素,但在冬季,与盐沼和高地森林相比,它们更多地使用低地森林、田地和池塘。在夏季和冬季,北部黄蝙蝠使用靠近淡水和盐沼的地点。此外,他们在夏季使用田地、池塘和盐沼多于高地和低地森林,但在冬季,他们比高地森林和盐沼更多地使用低地森林、田地和池塘。我们的结果强调了该地区蝙蝠的重要土地覆盖类型(例如,低地森林、池塘和盐沼),以及栖息地利用在季节之间的变化。考虑和了解全年栖息地使用变化的情况,将使管理者了解重要的栖息地特征在全年对蝙蝠的重要性如何变化。© 2021 野生动物协会。但在冬天,他们更多地使用低地森林、田地和池塘,而不是高地森林和盐沼。我们的结果强调了该地区蝙蝠的重要土地覆盖类型(例如,低地森林、池塘和盐沼),以及栖息地利用在季节之间的变化。考虑和了解全年栖息地使用变化的情况,将使管理者了解重要的栖息地特征在全年对蝙蝠的重要性如何变化。© 2021 野生动物协会。但在冬天,他们更多地使用低地森林、田地和池塘,而不是高地森林和盐沼。我们的结果强调了该地区蝙蝠的重要土地覆盖类型(例如,低地森林、池塘和盐沼),以及栖息地利用在季节之间的变化。考虑和了解全年栖息地使用变化的情况,将使管理者了解重要的栖息地特征在全年对蝙蝠的重要性如何变化。© 2021 野生动物协会。考虑和了解全年栖息地使用情况如何变化,将使管理者了解关键栖息地特征对蝙蝠的重要性全年可能如何变化。© 2021 野生动物协会。考虑和了解全年栖息地使用变化的情况,将使管理者了解重要的栖息地特征在全年对蝙蝠的重要性如何变化。© 2021 野生动物协会。
更新日期:2021-06-23
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