气候变化领域集成服务门户(CCPortal): Interactive effects of drought and deforestation on multitrophic communities and aquatic ecosystem functions in the Neotropics-a test using tank bromeliads

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DOI	10.7717/peerj.17346
	Interactive effects of drought and deforestation on multitrophic communities and aquatic ecosystem functions in the Neotropics-a test using tank bromeliads
	Seguigne, Marie; Leroy, Celine; Carrias, Jean-Francois; Corbara, Bruno; Rapnouil, Tristan Lafont; Cereghino, Regis
发表日期	2024
ISSN	2167-8359
起始页码	12
卷号	12
英文摘要	Background: Together with the intensification of dry seasons in Neotropical regions, increasing deforestation is expected to exacerbate species extinctions, something that could lead to dramatic shifts in multitrophic communities and ecosystem functions. Recent studies suggest that the effects of habitat loss are greater where precipitation has decreased. Yet, experimental studies of the pure and interactive effects of drought and deforestation at ecosystem level remain scarce. Methods: Here, we used rainshelters and transplantation from rainforest to open areas of natural microcosms (the aquatic ecosystem and microbial-faunal food web found within the rainwater-filled leaves of tank bromeliads) to emulate drought and deforestation in a full factorial experimental design. We analysed the pure and interactive effects of our treatments on functional community structure (including microorganisms, detritivore and predatory invertebrates), and on leaf litter decomposition in tank bromeliad ecosystems. Results: Drought or deforestation alone had a moderate impact on biomass at the various trophic level, but did not eliminate species. However, their interaction synergistically reduced the biomass of all invertebrate functional groups and bacteria. Predators were the most impacted trophic group as they were totally eliminated, while detritivore biomass was reduced by about 95%. Fungal biomass was either unaffected or boosted by our treatments. Decomposition was essentially driven by microbial activity, and did not change across treatments involving deforestation and/ or drought. Conclusions: Our results suggest that highly resistant microorganisms such as fungi (plus a few detritivores) maintain key ecosystem functions in the face of drought and habitat change. We conclude that habitat destruction compounds the problems of climate change, that the impacts of the two phenomena on food webs are mutually reinforcing, and that the stability of ecosystem functions depends on the resistance of a core group of organisms. Assuming that taking global action is more challenging than taking local -regional actions, policy -makers should be encouraged to implement environmental action plans that will halt habitat destruction, to dampen any detrimental interactive effect with the impacts of global climate change.
英文关键词	Climate change; Habitat destruction; Food webs; Freshwaters; Neotropics
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001225363000001
来源期刊	PEERJ
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/309565
作者单位	Universite de Toulouse; Universite Toulouse III - Paul Sabatier; Universite Federale Toulouse Midi-Pyrenees (ComUE); Institut National Polytechnique de Toulouse; Centre National de la Recherche Scientifique (CNRS); Institut de Recherche pour le Developpement (IRD); INRAE; Centre National de la Recherche Scientifique (CNRS); CIRAD; Universite de Montpellier; Institut de Recherche pour le Developpement (IRD); INRAE; AgroParisTech; CIRAD; Centre National de la Recherche Scientifique (CNRS); Universite des Antilles; Universite Clermont Auvergne (UCA); Centre National de la Recherche Scientifique (CNRS)
推荐引用方式 GB/T 7714	Seguigne, Marie,Leroy, Celine,Carrias, Jean-Francois,et al. Interactive effects of drought and deforestation on multitrophic communities and aquatic ecosystem functions in the Neotropics-a test using tank bromeliads[J],2024,12.
APA	Seguigne, Marie,Leroy, Celine,Carrias, Jean-Francois,Corbara, Bruno,Rapnouil, Tristan Lafont,&Cereghino, Regis.(2024).Interactive effects of drought and deforestation on multitrophic communities and aquatic ecosystem functions in the Neotropics-a test using tank bromeliads.PEERJ,12.
MLA	Seguigne, Marie,et al."Interactive effects of drought and deforestation on multitrophic communities and aquatic ecosystem functions in the Neotropics-a test using tank bromeliads".PEERJ 12(2024).