Specific arrangements of species dominance can be more influential than evenness in maintaining ecosystem process and function.
Specific arrangements of species dominance can be more influential than evenness in maintaining ecosystem process and function.
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DOI：
10.1038/srep39325
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发表时间：
2016-12-20
影响因子：
4.6
通讯作者：
Godbold JA
中科院分区：
文献类型：
--
作者：
Wohlgemuth D;Solan M;Godbold JA
物种丧失的生态后果得到了广泛的研究，但它代表了环境强迫的一个终点，但并不总是能够实现。物种均匀性和优势种等级顺序的变化是对方向性强迫的更广泛的响应。然而，尽管对生态系统功能有影响，但这种变化很少受到关注。在这里，我们通过实验评估了物种优势结构在特定均匀度水平下的重排，而不是物种丰富度和组成的变化，如何影响无脊椎动物颗粒改造和洞穴通风行为（底栖环境中微生物介导的再矿化过程的重要调节因子）以及相关的沉积物营养物质释放水平。我们发现，在低均匀度水平下，最优势的物种对系统功能的影响不成比例，但随着均匀度的增加，生物量分布的变化和物种-环境相互作用的变化在控制系统功能方面变得更加重要。我们的研究强调，在保护为社会提供基本服务的生物多样性和生态系统时，需要考虑改变群落属性的功能意义，而不是仅仅关注实现特定水平的多样性。
The ecological consequences of species loss are widely studied, but represent an end point of environmental forcing that is not always realised. Changes in species evenness and the rank order of dominant species are more widespread responses to directional forcing. However, despite the repercussions for ecosystem functioning such changes have received little attention. Here, we experimentally assess how the rearrangement of species dominance structure within specific levels of evenness, rather than changes in species richness and composition, affect invertebrate particle reworking and burrow ventilation behaviour - important moderators of microbial-mediated remineralisation processes in benthic environments - and associated levels of sediment nutrient release. We find that the most dominant species exert a disproportionate influence on functioning at low levels of evenness, but that changes in biomass distribution and a change in emphasis in species-environmental interactions become more important in governing system functionality as evenness increases. Our study highlights the need to consider the functional significance of alterations to community attributes, rather than to solely focus on the attainment of particular levels of diversity when safeguarding biodiversity and ecosystems that provide essential services to society.
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DOI：
10.1098/rstb.2011.0015
发表时间：
2011-09-12
影响因子：
6.3
作者：
Collen, Ben;McRae, Louise;Baillie, Jonathan E. M.
通讯作者：
Baillie, Jonathan E. M.
DOI：
10.1073/pnas.0701918104
发表时间：
2007-06-26
影响因子：
11.1
作者：
Hillebrand, Helmut;Gruner, Daniel S.;Smith, Jennifer E.
通讯作者：
Smith, Jennifer E.
影响因子：
4.2
作者：
Gilbertson, William W.;Solan, Martin;Prosser, James I.
通讯作者：
Prosser, James I.
影响因子：
8.8
作者：
Dangles, O;Malmqvist, B
通讯作者：
Malmqvist, B
影响因子：
4.6
作者：
Hale R;Mavrogordato MN;Tolhurst TJ;Solan M
通讯作者：
Solan M