Data/hora: 06/06/2024 08:14:22

Provedor de dados: 	5	
País: 	France	
Título: 	Individual-based simulation of the spatial and temporal dynamics of macroinvertebrate functional groups provides insights into benthic community assembly mechanisms	
Autores: 	Alexandridis, Nikolaos; Bacher, Cedric; Desroy, Nicolas; Jean, Fred.	
Data: 	2018-06	
Ano: 	2018	
Palavras-chave: 	Individual-based model; Inter-scale modeling; Functional groups; Benthic macroinvertebrates; Community assembly; Biological traits; Biotic interactions; Alpha-diversity; Beta-diversity; Rance estuary.	
Resumo: 	The complexity and scales of the processes that shape communities of marine benthic macroinvertebrates has limited our understanding of their assembly mechanisms and the potential to make projections of their spatial and temporal dynamics. Individual-based models can shed light on community assembly mechanisms, by allowing observed spatiotemporal patterns to emerge from first principles about the modeled organisms. Previous work in the Rance estuary (Brittany, France) revealed the principal functional components of its benthic macroinvertebrate communities and derived a set of functional relationships between them. These elements were combined here for the development of a dynamic and spatially explicit model that operates at two spatial scales. At the fine scale, modeling each individual’s life cycle allowed the representation of recruitment, inter- and intra-group competition, biogenic habitat modification and predation mortality. Larval dispersal and environmental filtering due to the tidal characteristics of the Rance estuary were represented at the coarse scale. The two scales were dynamically linked and the model was parameterized on the basis of theoretical expectations and expert knowledge. The model was able to reproduce some patterns of a- and b-diversity that were observed in the Rance estuary in 1995. Model analysis demonstrated the role of local and regional processes, particularly early post-settlement mortality and spatially restricted dispersal, in shaping marine benthos. It also indicated biogenic habitat modification as a promising area for future research. The combination of this mechanism with different substrate types, along with the representation of physical disturbances and more trophic categories, could increase the model’s realism. The precise parameterization and validation of the model is expected to extend its scope from the exploration of community assembly mechanisms to the formulation of predictions about the responses of community structure and functioning to environmental change.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00445/55654/57319.pdf

https://archimer.ifremer.fr/doc/00445/55654/57320.pdf

DOI:10.7717/peerj.5038

https://archimer.ifremer.fr/doc/00445/55654/	
Editor: 	Peerj Inc	
Formato: 	application/pdf	
Fonte: 	Peerj (2167-8359) (Peerj Inc), 2018-06 , Vol. 6 , P. e5038 (31p.)	
Fonte: 	2018 Alexandridis et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the articl

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