Early positive spatial selection effects of beta-diversity on ecosystem functioning
Early positive spatial selection effects of beta-diversity on ecosystem functioning
复制标题
β多样性对生态系统功能的早期积极空间选择效应
DOI：
10.1007/s10980-023-01786-9
复制
发表时间：
2023
影响因子：
5.2
通讯作者：
Isbell, Forest
中科院分区：
文献类型：
--
作者：
Castillioni, Karen;Isbell, Forest
环境元群落理论预测，如果存在积极的空间选择效应，即物种在单一栽培中生产力最高的地方以混合物种为主，则在更大空间尺度上产生的多样性(空间β多样性)可能会增加生态系统的功能。本实验对雪松溪生态系统科学保护区5种主要生境(草原、橡树稀树草原、落叶林、针叶林、沼泽)的优势种移栽苗木的存活进行了空间选择效应的实验测试。方法：在实验的第一个生长季结束时，我们建立了5种生境优势种的单一栽培和混交林，并估计了它们的存活率，将净生物多样性效应分为互补效应和选择效应两部分，包括空间选择效应。我们还发现了显著的正空间选择效应，这表明混交种倾向于更丰富的生境也是那些倾向于在单一栽培中存活更多的生境。我们还发现了显著的正空间选择效应，这表明混交林中物种倾向于更丰富的生境也是那些它们倾向于在单一栽培中生存更多的生境。结论总体来说，我们的结果与理论预测一致，即植物多样性对生态系统功能的额外影响，可能是由于物种在异质景观中的扩散和空间分选而在景观尺度上产生的，而不是在当地生境中观察到的。还需要进一步研究，以确定生存模式如何在生境内和生境之间随时间发展，以及生长和繁殖如何有助于植物生产力和其他生态系统功能。
ContextMetacommunity theory predicts that diversity arising at larger spatial scales (spatial β-diversity) may increase ecosystem functioning if there are positive spatial selection effects whereby species dominate in mixtures at places where they are most productive in monocultures. However, beta-diversity effects on ecosystem functioning remain understudied and unquantified experimentally.ObjectivesOur experiment tests for spatial selection effects in survivorship among transplanted seedlings of the dominant species of five major habitats (grassland, oak savanna, deciduous forest, coniferous forest, bog) at Cedar Creek Ecosystem Science Reserve.MethodsWe established monocultures and mixtures of dominant species in five habitats and estimated survivorship at the end of the first growing season of the experiment, partitioning net biodiversity effects into its components of complementarity effects and selection effects, which include spatial selection effects. Results: At this early experimental stage, we found positive selection effects, due mostly to average selection effects across all habitats. We also found a significantly positive spatial selection effect, indicating that the habitats where species tended to be more abundant in mixtures were also those where they tended to survive more in monocultures.ResultsAt this early experimental stage, we found positive selection effects, due mostly to average selection effects across all habitats. We also found a significantly positive spatial selection effect, indicating that the habitats where species tended to be more abundant in mixtures were also those where they tended to survive more in monocultures.ConclusionOverall, our results are consistent with theoretical predictions that additional effects of plant diversity on ecosystem functioning, beyond those observed in local experiments within local habitats, may arise at landscape scales from dispersal and spatial sorting of species across a heterogeneous landscape. Further study will be needed to determine how survivorship patterns develop over time within and among habitats and how growth and reproduction contribute to plant productivity and other ecosystem functions.
登录
查看更多内容
幼苗光照限制不会随着自然生产力梯度的增加而增加
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
Emily Grman
通讯作者：
Emily Grman
草地群落的时间稳定性更多地受到群落功能性状的调节，而不是物种多样性的调节
影响因子：
2.7
作者：
H. W. Polley;Chenghai Yang;B. Wilsey;P. Fay
通讯作者：
P. Fay
影响因子：
10
作者：
van der Plas, Fons
通讯作者：
van der Plas, Fons
DOI：
--
发表时间：
1988
期刊：
影响因子：
--
作者：
J. L. Torbert;A. Tuladhar;J. Burger;James C. Bell
通讯作者：
James C. Bell
树苗对酸沉的响应——一、基质酸度对种子萌发的影响
DOI：
--
发表时间：
1982
期刊：
影响因子：
--
作者：
D. Raynal;J. Roman;W. Eichenlaub
通讯作者：
W. Eichenlaub