Lotic meiofaunal community dynamics : colonisation, resilience and persistence in a spatially and temporally heterogeneous environment
Lotic meiofaunal community dynamics : colonisation, resilience and persistence in a spatially and temporally heterogeneous environment
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小型动物群落动态：时空异质环境中的殖民、恢复力和持久性
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
A. Robertson
中科院分区：
文献类型：
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作者：
A. Robertson
摘要1. Lotic小型底栖动物群落的空间和时间动态进行了研究，重点是殖民化，维护人口在Lotic环境和持久性的小型底栖动物群落。2.新栖息地的小型底栖动物定殖可能通过许多机制发生，并且在斑块规模（数小时至数天内）和流域规模（20年内）都是快速的。虽然数据非常有限，但在湖泊小型底栖动物群落中的演替模式是明显的。3. Lotic小型底栖动物群落似乎对高流量扰动有弹性。恢复力是由在流避难所和栖息地水文的可用性缓和。Lotic小型底栖生物也可能采取“避难所作为栖息地”的办法，这种干扰。4. Lotic剑水蚤桡足类具有一套共同的生活史特征，赋予弹性的干扰。与远洋浮游物种相比，它们的世代时间短，每个生殖周期有许多后代，寿命长。在“源”种群的女性很可能生存的干扰，所以可以在很长一段时间内不断繁殖，产生大量的后代，发展迅速，并使流的“汇”区。5.湖泊小型底栖动物群落的持续性变化很大。小型底栖动物的持久性并不增加的比例，在流流避难所。
SUMMARY 1. The spatial and temporal dynamics of lotic meiofaunal communities were examined with a focus on colonisation, maintenance of populations in lotic environments and persistence of meiofaunal communities. 2. Lotic meiofaunal colonisation of new habitats may take place via a number of mechanisms and is rapid at both the patch scale (within hours‐days) and the drainage basin scale (within 20 years). Successional patterns in lotic meiofaunal communities are evident although data are extremely limited. 3. Lotic meiofaunal communities appear to be resilient to high flow disturbances. Resilience is moderated by the availability of in-stream refugia and habitat hydrology. Lotic meiofauna may also adopt a ‘refuge as habitat‘ approach to such disturbances. 4. Lotic cyclopoid copepods possess a common suite of life history characteristics that confers resilience to disturbances. Compared to pelagic planktonic species they have short generation times, many descendants per reproductive cycle and long lifespans. Females in ‘source‘ populations are likely to survive disturbances and so could continuously reproduce over a long period of time producing large numbers of offspring which develop rapidly and recolonise ‘sink‘ areas of the stream. 5. Persistence of lotic meiofaunal communities is highly variable. Meiofaunal persistence does not increase with increasing proportions of in-stream flow refugia.