Intrinsic and extrinsic drivers of succession: Effects of habitat age and season on an aquatic insect community.
Intrinsic and extrinsic drivers of succession: Effects of habitat age and season on an aquatic insect community.
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演替的内在和外在驱动因素：栖息地年龄和季节对水生昆虫群落的影响。
DOI：
10.1111/een.12103
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发表时间：
2014
影响因子：
2.2
通讯作者：
Juliano,StevenA
中科院分区：
文献类型：
--
作者：
Murrell,EbonyG;Ives,AnthonyR;Juliano,StevenA
1. 演替的经典研究主要以植物群落研究为主，重点关注群落组成变化的内在驱动因素，例如种间竞争和非生物环境的变化。他们通常不考虑定殖的外在驱动因素，例如季节性物候，这可能会影响群落变化。2。对占据短暂池（例如人工容器中的池）的双翅目群落的演替的内在和外在驱动因素进行了研究。通过在季节的不同时间启动群落并随着时间的推移跟踪它们，比较了演替的内在（即栖息地年龄）与外在（即季节物候）驱动因素的相对重要性。3。将充满水的人工容器放置在落叶林中，每 3 个月启动 20 个容器。每周对容器进行采样以评估群落组成。社区对应分析（CA）分数的重复测量混合效应分析使我们能够区分对继承的内在和外在影响。还测试了温度和降水量的协变量。4．群落轨迹（由 CA 定义）随栖息地年龄和季节的不同而显着不同，表明内在和外在效应都会影响演替模式。根据样本量校正的赤池信息标准 (AICcs) 的比较表明，对于物种组成而言，栖息地年龄比季节更重要。温度和降水不能解释超出栖息地年龄和季节解释的成分变化。5．对双翅目和其他短暂群落演替的内在和外在影响的相对强度进行量化，使我们能够理清预测群落组成变化所必须理解的过程。
1. Classic studies of succession, largely dominated by plant community studies, focus on intrinsic drivers of change in community composition, such as inter‐specific competition and changes to the abiotic environment. They often do not consider extrinsic drivers of colonisation, such as seasonal phenology, that can affect community change.2. Both intrinsic and extrinsic drivers of succession for dipteran communities that occupy ephemeral pools, such as those in artificial containers were investigated. By initiating communities at different times in the season and following them over time, the relative importance of intrinsic (i.e. habitat age) versus extrinsic (i.e. seasonal phenology) drivers of succession were compared.3. Water‐filled artificial containers were placed in a deciduous forest with 20 containers initiated in each of 3 months. Containers were sampled weekly to assess community composition. Repeated‐measures mixed‐effects analysis of community correspondence analysis (CA) scores enabled us to partition intrinsic and extrinsic effects on succession. Covariates of temperature and precipitation were also tested.4. Community trajectories (as defined by CA) differed significantly with habitat age and season, indicating that both intrinsic and extrinsic effects influence succession patterns. Comparisons of Akaike Information Criteria corrected for sample sizes (AICcs) showed that habitat age was more important than season for species composition. Temperature and precipitation did not explain composition changes beyond those explained by habitat age and season.5. Quantification of relative strengths of intrinsic and extrinsic effects on succession in dipteran and other ephemeral communities enables us to disentangle processes that must be understood for predicting changes in community composition.