Thermal sensitivity modulates temporal patterns of ecosystem functioning by freshwater mussels
Thermal sensitivity modulates temporal patterns of ecosystem functioning by freshwater mussels
复制标题
热敏感性调节淡水贻贝生态系统功能的时间模式
DOI：
10.1111/fwb.13996
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发表时间：
2022
影响因子：
2.7
通讯作者：
Atkinson, Carla L.
中科院分区：
文献类型：
--
作者：
van Ee, Brian C.;Johnson, Paul D.;Atkinson, Carla L.
全球生物多样性的持续丧失凸显了了解物种丧失如何影响生态系统功能的重要性。温度变化会加速物种消失，但对物种的影响会有所不同。我们研究了温度（10°C、20°C 或 30°C）对来自美国阿拉巴马州西普西河物种丰富组合的 11 种淡水贻贝物种的资源获取和同化（清除率、呼吸率、氮和磷排泄）的影响，以评估温度如何影响共生物种以及生态系统处理它们的过程。方便。贻贝属于同一类（即滤食性双壳类），但跨越了广泛的进化谱系，并具有从寿命短、快速成熟的物种到寿命长、生长缓慢的物种的多样性生活史策略。我们的结果表明，四种物种（Cyclonaias asperata、Elliptio arca、Lampsilis ornata 和 Obovaria unicolor）在 30°C 下对热敏感，使用比他们获得的能量更多。这些物种跨越了三个系统发育部落和两种不同的生活史策略，表明热耐受性可能不一定与生活史策略或系统发育限制有关。当实验室清除率和排泄率扩展到一年多的天然贻贝群落时，我们发现热耐受和敏感物种的比例对整个生态系统功能的相对贡献随温度和流量状况而变化。热应激增强了敏感物种在夏季的贡献，因为个体试图通过提高清除率和使用增加氨排泄的能量储存来满足代谢需求。河流流量和背景养分浓度也调节了贻贝促进的生态系统功能的影响。冬季的高河流流量和夏季的高背景养分浓度降低了贻贝群落的相对贡献。尽管贻贝物种通常分组在单个行会中，但物种特定的热特性调节它们在群落中的作用。随着生物多样性的减少，由于独特物种性状的丧失，即使用幸存的贻贝物种替代生物量也不太可能支持可比的生态系统功能。
The continued global loss of biodiversity highlights the importance of understanding how species loss may impact ecosystem function. Shifting temperatures will accelerate species loss, but will affect species differently.We investigated effects of temperature (10°C, 20°C, or 30°C) on resource acquisition and assimilation (clearance rate, respiration rate, N and P excretion) for 11 freshwater mussel species from a species‐rich assemblage in the Sipsey River, Alabama, U.S.A., to evaluate how temperatures impact co‐occurring species and the ecosystem processes they facilitate. Mussels are assigned to the same guild (i.e., filter‐feeding bivalves), but span a breadth of evolutionary lineages and have a diversity of life history strategies from short‐lived, quickly maturing species to long‐lived, slow‐growing species.Our results indicated that four species (Cyclonaias asperata,Elliptio arca,Lampsilis ornata, andObovaria unicolor) were thermally sensitive at 30°C, using more energy than they were acquiring. These species spanned three phylogenetic tribes and two different life‐history strategies suggesting thermal tolerance may not necessarily be linked to life history strategy or phylogenetic constraints.When laboratory clearance and excretion rates were scaled to a natural mussel community over a year, we found that relative contributions by the proportion of thermally tolerant and sensitive species to total ecosystem function varied temporally across temperature and flow regimes. Thermal stress enhanced contributions by sensitive species' during summer, as individuals attempted to meet metabolic demands by increasing clearance rates and use of energy stores that increased ammonia excretion. River discharge and background nutrient concentrations also modulated the impact of ecosystem functioning facilitated by mussels. High river discharge in winter and high background nutrient concentrations in the summer decreased the relative contribution of the mussel community.Although mussel species are commonly grouped in a single guild, species‐specific thermal traits modulate their role in the community. As biodiversity decreases, even biomass replacement by surviving mussel species is unlikely to support comparable ecosystem function due to the loss of unique species traits.
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影响因子：
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作者：
Tamara J. Pandolfo;W. Cope;C. Arellano;R. Bringolf;M. Barnhart;Edward J. Hammer
通讯作者：
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影响因子：
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Garrett W. Hopper;K. Gido;C. Pennock;S. Hedden;Bryan D. Frenette;N. Barts;C. Hedden;L. Bruckerhoff
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DOI：
--
发表时间：
2012
期刊：
影响因子：
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作者：
J. D. Hopper;A. Huryn;G. Schuster
通讯作者：
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影响因子：
1.8
作者：
K. Capps;C. Atkinson;A. Rugenski
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A. Rugenski
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影响因子：
2.7
作者：
D. Spooner;C. Vaughn
通讯作者：
C. Vaughn