Community Ecology Lab, Department of Biology, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium.
Ecol Lett. 2019 Jan;22(1):89-97. doi: 10.1111/ele.13170. Epub 2018 Oct 28.
Recent work on habitat selection has shown that the perceived quality of habitat patches may depend on the quality of adjacent patches. However, it is still unclear how local habitat selection cues can alter distribution patterns in metacommunities at a larger (regional) scale. We studied mosquito oviposition in pond landscapes that differed in the proportion of bad patches with fish predation risk. Our experiment provided conclusive evidence for two local and two regional types of habitat selection. Good patches near bad patches were avoided (local risk contagion) while more distant good patches experienced increased oviposition (regional compression). Oviposition in bad patches increased when located next to good patches (reward contagion) or when there were no good patches regionally present (regional compromise). This complex colonisation behaviour involving compromises at different spatial scales forces experimenters to reconsider the independence of spatial replicates and challenges available theories to predict species distribution patterns.
最近有关生境选择的研究表明，生境斑块的感知质量可能取决于相邻斑块的质量。然而，目前尚不清楚局部生境选择线索如何在更大（区域）尺度的复合种群中改变分布模式。我们研究了在具有鱼类捕食风险的不良斑块比例不同的池塘景观中蚊子的产卵情况。我们的实验为两种局部和两种区域类型的生境选择提供了确凿的证据。靠近不良斑块的好斑块被回避（局部风险蔓延），而更远的好斑块则经历了更多的产卵（区域压缩）。当不良斑块位于好斑块旁边时（奖励蔓延）或在区域上没有好斑块时（区域妥协），其产卵量会增加。这种涉及不同空间尺度上妥协的复杂殖民行为迫使实验者重新考虑空间重复的独立性，并挑战现有的理论来预测物种分布模式。
