A global assessment of environmental and climate influences on wetland macroinvertebrate community structure and function
A global assessment of environmental and climate influences on wetland macroinvertebrate community structure and function
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DOI：
10.1111/gcb.17173
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发表时间：
2024-02-01
影响因子：
11.6
通讯作者：
Batzer，Darold P.
中科院分区：
文献类型：
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作者：
Epele，Luis B.;Williams-Subiza，Emilio A.;Batzer，Darold P.
估计生物体对广泛空间尺度上的环境变量和分类群关联的反应对于预测它们对气候变化的反应至关重要。大型无脊椎动物在湿地过程中发挥着重要作用，但同时探索群落结构和群落性状对环境梯度响应的研究仍然缺乏。我们编制了来自 756 个洼地湿地的全球数据集（六大洲），包括 96 个大型无脊椎动物科的出现情况、它们的系统发育树和 19 个生物特征。使用贝叶斯分层联合物种分布模型（JSDM），我们估计了大型无脊椎动物的关联性，并比较了当地和气候预测因子对大型无脊椎动物个体科及其性状的影响。虽然大型无脊椎动物科主要与大尺度因素（最高温度和降水季节性）相关，但大型无脊椎动物性状与当地湿地水周期密切相关。有趣的是，大型无脊椎动物家族和性状都显示出与相同环境变量的正相关和负相关。正如预期的那样，许多大型无脊椎动物家族的出现与温度呈正相关，但也有少数表现出相反的模式，并且发现于较冷或山区。我们还发现，湿地大型无脊椎动物群落可能会通过降水季节性、温度季节性和湿地面积相关特征的变化而受到气候变化的影响。温度升高可能会对收集器和粉碎机功能组产生负面影响。降水量减少可能导致有利于耐旱大型无脊椎动物的湿地面积减少，但也可能对缺乏这些适应性的大型无脊椎动物产生负面影响。湿地过程可能会因改变大型无脊椎动物科分布的大范围环境变化和改变生物体特征的局部水周期变化而受到损害。我们基于家庭和基于特征的互补方法阐明了气候变化可能对湿地生态系统产生的复杂影响。
Estimating organisms' responses to environmental variables and taxon associations across broad spatial scales is vital for predicting their responses to climate change. Macroinvertebrates play a major role in wetland processes, but studies simultaneously exploring both community structure and community trait responses to environmental gradients are still lacking. We compiled a global dataset (six continents) from 756 depressional wetlands, including the occurrence of 96 macroinvertebrate families, their phylogenetic tree, and 19 biological traits. Using Bayesian hierarchical joint species distribution models (JSDMs), we estimated macroinvertebrate associations and compared the influences of local and climatic predictors on both individual macroinvertebrate families and their traits. While macroinvertebrate families were mainly related to broad‐scale factors (maximum temperature and precipitation seasonality), macroinvertebrate traits were strongly related to local wetland hydroperiod. Interestingly, macroinvertebrate families and traits both showed positive and negative associations to the same environmental variables. As expected, many macroinvertebrate family occurrences were positively associated with temperature, but a few showed the opposite pattern and were found in cooler or montane regions. We also found that wetland macroinvertebrate communities would likely be affected by changing climates through alterations in traits related to precipitation seasonality, temperature seasonality, and wetland area. Temperature increases may negatively affect collector and shredder functional groups. A decrease in precipitation could lead to reductions in wetland area benefiting drought‐tolerant macroinvertebrates, but it may negatively affect macroinvertebrates lacking those adaptations. Wetland processes may be compromised through broad‐scale environmental changes altering macroinvertebrate family distributions and local hydroperiod shifts altering organism traits. Our complementary family‐based and trait‐based approaches elucidate the complex effects that climate change may produce on wetland ecosystems.