Global Patterns of Aquatic Macroinvertebrate Dispersal and Functional Feeding Traits in Aridland Rock Pools
Global Patterns of Aquatic Macroinvertebrate Dispersal and Functional Feeding Traits in Aridland Rock Pools
复制标题
干旱地区岩石池水生大型无脊椎动物扩散和功能性摄食特征的全球模式
DOI：
10.3389/fenvs.2019.00106
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发表时间：
2019
影响因子：
4.6
通讯作者：
M. Bogan
中科院分区：
文献类型：
--
作者：
Susan Washko;M. Bogan
岩石池是重要的沙漠生态系统，在干旱地区提供稀有的地表水来源。水期是水生大型无脊椎动物生活在岩石池中的主要限制因素之一。栖息的大型无脊椎动物必须在干燥前完成它们的生命周期，并可以采用主动或被动的扩散策略来生存干燥。量化岩池大型无脊椎动物群落在多个地区的扩散和功能取食特征，可以深入了解岩池生态系统将如何对气候变化模型预测的较短水期做出反应。在这里，我们分析了从24个已发表的岩石池研究中获得的分类数据(26个物种清单)，以评估大型无脊椎动物的扩散和觅食策略，以及生态系统功能如何随着水期的缩短而变化。平均而言，在所有数据集上，分类群均由主动分散体和被动分散体组成。最活跃的散布类群是捕食者(60%)和采集者(33%)。相比之下，被动分散型分类群一般是滤器(39%)、采集器(29%)和刮板(21%)。气候变化情景可能会导致许多地区岩石池水周期缩短，这可能会减少陆上扩散能力较弱的被动分散者的栖息地可用性。如果被动分散者种群减少，其相关的生态系统功能，如精细有机物处理，可能会被扰乱。这些结果为进一步研究水期变化引起的岩池生态系统功能变化奠定了基础。
Rock pools are important desert ecosystems that provide rare sources of surface water in arid regions. Hydroperiod is one of the primary limiting factors on aquatic macroinvertebrates living in rock pools. Resident macroinvertebrates must complete their life cycles before drying, and may employ active or passive dispersal strategies to survive drying. Quantifying dispersal and functional feeding traits across rock pool macroinvertebrate communities in multiple regions could provide insight into how rock pool ecosystems will respond to shorter hydroperiods predicted by climate change models. Here, we analyze taxonomic data (26 species lists) obtained from 24 published studies of rock pools to assess the dispersal and feeding strategies of macroinvertebrates, and how ecosystem functions may change with shorter hydroperiods. On average across all data sets, taxa were equally comprised of active dispersers and passive dispersers. Most active disperser taxa were predators (60%) and gatherers (33%). In contrast, passive disperser taxa were generally filterers (39%), gatherers (29%), and scrapers (21%). Climate change scenarios may result in shorter rock pool hydroperiods in many regions, which could reduce habitat availability for passive dispersers with weak overland dispersal abilities. If passive disperser populations decrease, their associated ecosystem functions, such as fine organic matter processing, could be disrupted. These results provide a foundation for future work investigating changes in rock pool ecosystem function due to altered hydroperiods.