互补性(分子生物学)
营养水平
生物多样性
生产力
生态系统
生态学
多样性(政治)
物种丰富度
资源(消歧)
环境资源管理
生物
环境科学
经济
计算机科学
社会学
计算机网络
遗传学
人类学
宏观经济学
作者
Georg Albert,Benoît Gauzens,Michel Loreau,Shaopeng Wang,Ulrich Brose
出处
期刊:Authorea - Authorea
日期:2021-05-12
被引量:1
标识
DOI:10.22541/au.162080645.54708638/v1
摘要
Resource-use complementarity of producer species is often invoked to explain their generally positive diversity-productivity relationships. Additionally, multi-trophic interactions that link processes across trophic levels have received increasing attention as a possible key driver. Given that both are integral to natural ecosystems, their interactive effect should be evident but has remained hidden. We address this issue by analyzing diversity-productivity relationships in a simulation experiment of primary producer communities nested within complex food-webs, manipulating resource-use complementarity and multi-trophic animal richness. We show that both mechanisms’ joint contribution to positive diversity-productivity relationships generally exceeds their individual effects, as both interactively create diverse communities of complementary producer species. Specifically, multi-trophic interactions in animal-rich ecosystems increase complementarity the most when resource-use complementarity is low. The interdependence of top-down and bottom-up forces in creating biodiversity-productivity relationships highlights the importance to adopt a more multi-trophic perspective on biodiversity-ecosystem functioning relationships.
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