Temporally robust occupancy frequency distributions in riverine metacommunities explained by local biodiversity regulation

Temporally robust occupancy frequency distributions in riverine metacommunities explained by local biodiversity regulation
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当地生物多样性法规解释了河流元社区中暂时稳健的占用频率分布

DOI:
10.1101/2021.11.08.467721
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发表时间:
2021
期刊:
--
影响因子:
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通讯作者:
O'Sullivan J
O'Sullivan J
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作者:
O'Sullivan J

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目的尽管经过几十年的研究,但决定物种占据地点数量分布的机制,即占用频率分布(OFD),仍然不完全清楚。为了探索导致经验性OFD形状和时间动态的主要机制,我们开发了一个简单的斑块占用框架,具有内在调节的局部丰富度,并将该模型适用于描述大型无脊椎动物、大型植物和硅藻占有率的高度复制的数据集。位置英格兰。时间周期从1990年到2020年长达30年。主要分类群研究了大型无脊椎动物、大型植物和硅藻。我们考虑了物种丰富度、组成和OFD形状的时间变化。评估了预测D的对数序列的简单斑块占用模型的稳态与经验观测的拟合度。此外,我们测试了模型预测元社区规模过程的能力。结果我们的模型提供了与经验OFD一致的良好拟合。它还可以用来预测元群落尺度的物种周转。主要结论我们的结果支持这样的观点,即元群落结构反映了一种受局部共存极限控制的动态稳态。
AimThe mechanisms determining the distribution of the number of sites species occupy, the occupancy frequency distribution (OFD), remain incompletely understood despite decades of research. To explore the dominant mechanisms responsible for the shape and temporal dynamics of empirical OFD, we develop a simple patch occupancy framework with intrinsically regulated local richness and fit the model to a highly replicated dataset describing macroinvertebrate, macrophyte and diatom occupancy.LocationEngland.Time periodUp to 30 years between 1990 and 2020.Major taxa studiedMacroinvertebrates, macrophytes and diatoms.MethodsWe study the OFD in a highly replicated dataset of freshwater metacommunities in England across time. We consider temporal change in species richness, composition, and in the shape of the OFD. Goodness‐of‐fit of the steady state of a simple patch occupancy model—which predicts a log‐series OFD—to the empirical observations is assessed. Additionally, we test the capacity of the model to predict metacommunity‐scale processes.ResultsOur model provides a consistently good fit to empirical OFDs. It can additionally be used to predict metacommunity‐scale species turnover.Main conclusionsOur results support the view that metacommunity structure reflects a dynamic steady state controlled by local limits to coexistence.
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影响因子: 16.6
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DOI: --
发表时间: 2013
期刊:
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