Bats in the Changing Boreal Forest: Response to a Megafire by Endangered Little Brown Bats (Myotis lucifugus)

IF 1.3 4区 环境科学与生态学 Q3 ECOLOGY
T. Jung
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引用次数: 9

Abstract

ABSTRACT Wildfire is a pervasive disturbance in the boreal forest, and fire size and severity is increasing due to climate change. Yet, wildfire impacts on boreal bats are unknown. Burned forest may be attractive to bats because of an increase in dead trees and a reduction in vegetative clutter. Using ultrasonic detectors, I sampled little brown bat (Myotis lucifugus) activity at lakeshore and upland sites within burned and mature forest. Activity was greater in mature than burned forest at both upland and lakeshore sites. Activity was greater at lakeshores, where some large snags survived fire. The relative use of edges created by fire, lakeshores and roads was also investigated. Bat activity was greater at lakeshores than other edge types. Bats made little use of burned upland areas or fire-created edges. This study provides a first approximation of the effect of a ‘megafire’ on bats in the boreal forest and suggests that large, severe wildfires may have a negative impact. Protection of mature forest containing large dead trees, particularly along lakeshores, may help to mitigate the loss of habitat due to wildfires. Further work, however, is needed to assess bat activity in burns of differing sizes, severity and age.
变化中的北方森林中的蝙蝠:对濒危小棕蝙蝠大火的反应
摘要野火是北方森林中一种普遍存在的扰动,由于气候变化,火灾的规模和严重程度都在增加。然而,野火对北方蝙蝠的影响尚不清楚。烧毁的森林可能对蝙蝠很有吸引力,因为枯树的增加和植被混乱的减少。使用超声波探测器,我在被烧毁和成熟的森林中的湖岸和高地对小棕蝙蝠的活动进行了采样。在高地和湖岸地区,成熟森林的活动量都大于被烧毁的森林。湖岸的活动更为活跃,那里的一些大障碍物在火灾中幸存下来。还调查了火灾、湖岸和道路产生的边缘的相对使用情况。湖岸的蝙蝠活动比其他边缘类型的蝙蝠更活跃。蝙蝠很少利用被烧毁的高地或火灾形成的边缘。这项研究提供了北方森林中“大火”对蝙蝠影响的初步近似值,并表明大规模、严重的野火可能会产生负面影响。保护含有大量枯树的成熟森林,特别是湖岸,可能有助于减轻野火造成的栖息地损失。然而,还需要进一步的工作来评估蝙蝠在不同大小、严重程度和年龄的烧伤中的活动。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Ecoscience
Ecoscience 环境科学-生态学
CiteScore
2.80
自引率
0.00%
发文量
13
审稿时长
>36 weeks
期刊介绍: Écoscience, is a multidisciplinary journal that covers all aspects of ecology. The journal welcomes submissions in English or French and publishes original work focusing on patterns and processes at various temporal and spatial scales across different levels of biological organization. Articles include original research, brief communications and reviews.
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