The role of linear mown firebreaks in conserving butterfly diversity: Effects of adjacent vegetation and management
The role of linear mown firebreaks in conserving butterfly diversity: Effects of adjacent vegetation and management
复制标题
线性修剪的防火带在保护蝴蝶多样性方面的作用：邻近植被和管理的影响
DOI：
10.1111/ens.12289
复制
发表时间：
2018
影响因子：
0.9
通讯作者：
Yasuda T
中科院分区：
文献类型：
--
作者：
Ohwaki A;Hayami S;Kitahara M;Yasuda T
在日本和欧洲，半自然草地对维持草原蝴蝶至关重要。然而，近年来这些草地环境的严重退化引起了人们对线性草地的关注，如防火带和电力线走廊，作为草地昆虫的替代栖息地。我们连续5年在日本中部富士山北麓的一片废弃草地和邻近不同植被的线性刈割防火区内对蝴蝶进行了调查，特别关注了2012年日本濒危物种红色名录（“红色名录”物种）中的物种。我们发现，与长期被遗弃的草地相比，防火林带的蝴蝶物种丰富度和丰度始终更高，而且防火林带的物种组成因相邻植被的条件而异。被森林包围的防火带主要被森林和边缘物种利用，而毗邻草地的防火带对保护红色名录草地物种至关重要。因此，只有靠近草地的修剪过的防火林被认为是许多草地蝴蝶的高质量替代栖息地，但面积有限。因此，通过不频繁的刈割在被遗弃的草地上创造异质性有助于保护草地蝴蝶，包括红色名录物种。
Semi‐natural grasslands are vital for maintaining grassland butterflies in Japan, as well as in Europe. However, severe decline in these grassland environments has recently attracted attention to linear grasslands, such as firebreaks and power‐line corridors, as alternative habitats for grassland insects. We surveyed butterflies in an abandoned grassland and nearby linear mown firebreaks adjacent to different vegetation at the northern foot of Mt. Fuji, central Japan, over 5 successive years, particularly focusing on species on the 2012 Japanese Red List of Threatened Species (“red‐list” species). We found that the firebreaks were consistently higher in species richness and abundance of butterflies than the long‐term abandoned grassland, and that species composition differed among the firebreaks depending on conditions of the adjacent vegetation. The firebreaks surrounded by forests were mainly utilized by forest and edge species, whereas the firebreaks adjacent to the grassland were essential for conserving red‐list grassland species. Thus, only the mown firebreaks adjacent to the grassland were regarded as a high‐quality alternative habitat for many grassland butterflies, but the area was limited. Therefore, creating heterogeneity in the abandoned grassland by infrequent mowing could help conserve grassland butterflies, including red‐list species.