Arthropods on plants in a fragmented Neotropical dry forest： A functional analysis of area loss and edge effects
Arthropods on plants in a fragmented Neotropical dry forest： A functional analysis of area loss and edge effects作者机构：Centro de Investigaciones Entomol6gicas de C6rdoba (IMBIV - CONICET) and Universidad Nacional de C6rdoba C6rdoba Argentina
出 版 物：《Insect Science》 (昆虫科学（英文版）)
年 卷 期：2015年第22卷第1期
页 面：129-138页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境]
主 题：area loss Chaco Serrano edge effect forest arthropods functional groups habitat fragmentation
摘 要：Loss and fragmentation of natural ecosystems are widely recognized as the most important threats to biodiversity conservation, with Neotropical dry forests among the most endangered ecosystems. Area and edge effects are major factors in fragmented landscapes. Here, we examine area and edge effects and their interaction, on ensembles of arthropods associated to native vegetation in a fragmented Chaco Serrano forest. We analyzed family richness and community composition of herbivores, predators, and parasitoids on three native plant species in 12 fragments of varying size and at edge/interior positions. We also looked for indicator families by using Indicator Species Analysis. Loss of family richness with the reduction of forest fragment area was observed for the three functional groups, with sirnilar magnitude. Herbivores were richer at the edges without interaction between edge and area effects, whereas predators were not affected by edge/interior position and parasitoid richness showed an interaction between area and position, with a steeper area slope at the edges. Family composition of herbivore, predator, and parasitoid assemblages was also affected by forest area and/or edge/interior situation. We found three indicator families for large remnants and five for edges. Our results support the key role of forest area for conservation of arthropods taxonomic and functional diversity in a highly threatened region, and emphasize the need to understand the interactions between area and edge effects on such diversity.
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