Latitudinal‐diversity gradients can be shaped by biotic processes: new insights from an eco‐evolutionary model
Latitudinal‐diversity gradients can be shaped by biotic processes: new insights from an eco‐evolutionary model
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生物过程可以塑造纬度多样性梯度：来自生态进化模型的新见解
DOI：
10.1111/ecog.03513
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发表时间：
2019
期刊：
影响因子：
5.9
通讯作者：
P. R. Peres‐Neto
中科院分区：
文献类型：
--
作者：
Henriques‐Silva;A. Kubisch;P. R. Peres‐Neto
形成纬度多样性梯度（LDG）的过程一直是辩论和研究的长期来源。气候、历史和演变因素都被证明有助于LDG的形成。然而，Meta分析表明，不同的分支具有可能在一个以上的数量级上变化的LDG斜率。这种巨大的变化不能仅仅用气候或历史因素来解释（例如温带和热带之间的表面积差异），因为一个地理区域内的所有分支都受到相同条件的影响。因此，每个分类组固有的生物过程可能是相关的，在解释率差异的多样性下降跨越纬度梯度组之间。在这项研究中，我们开发了一个模型，模拟多个竞争物种受到（或不）人口Allee效应。我们模拟了这些物种在环境梯度中的范围扩展，以显示这两个被忽视的因素（竞争和Allee效应）是如何调节LDG的。Allee效应导致更陡峭的LDG给予更高的概率本地灭绝和较低的殖民能力相比，没有Allee效应的物种。同样，较强的竞争也导致了物种多样性的急剧下降相比，较弱的物种拮抗作用的情况。这种模式的发生主要是由于优先级效应的强度，其中具有强烈竞争的场景，在景观中较早分散的物种能够获得许多斑块，而晚到的物种则逐渐被排除在扩大其范围之外。总的来说，我们的研究结果表明，生物过程在塑造宏观生态模式的影响可能比目前所认识的更重要。
The processes involved in shaping latitudinal‐diversity gradients (LDGs) have been a longstanding source of debate and research. Climatic, historical and evolutionary factors have all been shown to contribute to the formation of LDGs. However, meta‐analyses have shown that different clades have LDG slopes that may vary in more than one order of magnitude. Such large variation cannot be explained solely by climatic or historical factors (e.g. difference in surface area between temperate and tropical zones) given that all clades within a geographic region are subject to the same conditions. Therefore, biotic processes intrinsic to each taxonomic group could be relevant in explaining rate differences in diversity decline across latitudinal gradients among groups. In this study, we developed a model simulating multiple competing species subjected (or not) to a demographic Allee effect. We simulated the range expansion of these species across an environmental gradient to show how these two overlooked factors (competition and Allee effects) are capable of modulating LDGs. Allee effects resulted in a steeper LDG given a higher probability of local extinction and lower colonization capacity compared to species without Allee effects. Likewise, stronger competition also led to a steeper decline in species diversity compared to scenarios with weaker species antagonistic interactions. This pattern occurred mostly due to the strength of priority effects, wherein scenarios with strong competition, species that dispersed earlier in the landscape were able to secure many patches whereas late‐arriving species were progressively precluded from expanding their ranges. Overall, our results suggest that the effect of biotic processes in shaping macroecological patterns could be more important than it is currently appreciated.
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影响因子：
8.8
作者：
Duputie, Anne;Massol, Francois;Ronce, Ophelie
通讯作者：
Ronce, Ophelie
DOI：
10.1017/s0016672300010284
发表时间：
1967-01-01
期刊：
GENETICAL RESEARCH
影响因子：
--
作者：
KIMURA, M
通讯作者：
KIMURA, M
影响因子：
2.6
作者：
Wethey, DS
通讯作者：
Wethey, DS
影响因子：
8.8
作者：
Fronhofer, Emanuel A.;Klecka, Jan;Altermatt, Florian
通讯作者：
Altermatt, Florian
影响因子：
16.8
作者：
I. Morales‐Castilla;M. Matias;D. Gravel;M. Araújo
通讯作者：
I. Morales‐Castilla;M. Matias;D. Gravel;M. Araújo