Relative importance of landscape features, stand structural attributes, and fruit availability on fruit-eating birds in Japanese forests fragmented by coniferous plantations
Relative importance of landscape features, stand structural attributes, and fruit availability on fruit-eating birds in Japanese forests fragmented by coniferous plantations
复制标题
景观特征、林分结构属性和果实可用性对日本针叶林破碎森林中食果鸟类的相对重要性
DOI：
10.1016/j.biocon.2017.02.040
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发表时间：
2017
影响因子：
5.9
通讯作者：
Masaki T
中科院分区：
文献类型：
--
作者：
Yoshikawa T;Harasawa S;Isagi Y;Niikura N;Koike S;Taki H;Naoe S;Masaki T
以种植园取代天然林正在造成世界范围内的森林损失和支离破碎。在这些支离破碎的森林中，非常需要保护和恢复动物，特别是那些具有特殊生态功能的森林，如食果鸟类。在这项为期3年的研究中，我们探索了景观水平和当地因素对日本针叶林中散布的阔叶林斑块中食果鸟类丰富度和丰富度的相对重要性。作为残留林的局部因子，我们包括肉果可获得性和林分结构属性，然后分析了这些因子在繁殖季节(5-8月)和非繁殖季节(9-12月)以及三个鸟类大小类别之间的相对重要性的变化。我们的结果为鸟类丰富度和丰富度相关因素的季节变化提供了新的见解，并证明了残存林地水果可获得性的重要性。与鸟类丰富度/丰富度呈正相关的主要因素是繁殖季节的林分结构属性(例如树木断面积)和景观变量(例如阔叶林的比例)，而在以候鸟为主的非繁殖季节则是水果供应。我们只发现三个大小类别之间的相关因素有很小的差异。因此，保护连续成熟的森林对于保护食果鸟类的繁殖群落具有重要意义，而维持果实的可获得性是支持候鸟在非繁殖季节的有效途径。这些发现适用于正在被种植园取代或将要被种植园取代的地区的旨在保护生物多样性的森林管理，例如在许多温带东亚地区。
Replacement of natural forests with plantations is causing forest loss and fragmentation worldwide. There is a great need for conservation and restoration of fauna in these fragmented forests, particularly those with special ecological functions, such as fruit-eating birds. In this 3-year study, we explored the relative importance of landscape-level and local factors for the richness and abundance of fruit-eating birds in broad-leaved forest patches scattered within a coniferous plantation in Japan. As local factors of remnant forests we included fleshy fruit availability and stand structural attributes, and then analyzed how the relative importance of these factor varies between the breeding (May–August) and non-breeding (September–December) seasons and among three bird size classes. Our results provide new insights into seasonal variations in the factors associated with bird richness and abundance and demonstrate the importance of fruit availability in the remnant forest patches. The main factors showing positive associations with bird richness/abundance were stand structural attributes (e.g., tree basal area) and landscape variables (e.g., proportion of broad-leaved forest) during the breeding season, whereas it was fruit availability during the non-breeding season, when migrating birds are dominant. We detected only minor variations in the associated factors among the three size classes. Thus, preserving continuous mature forests is of great importance for conserving breeding communities of fruit-eating birds, and maintaining fruit availability is an effective approach for supporting migrating birds during the non-breeding season. These findings are applicable to forest management aimed toward biodiversity conservation in regions being replaced or to be replaced by plantations, such as in many areas of temperate East Asia.