FN Archimer Export Format
PT J
TI Individual-based simulation of the spatial and temporal dynamics of macroinvertebrate functional groups provides insights into benthic community assembly mechanisms
BT 
AF ALEXANDRIDIS, Nikolaos
   BACHER, Cedric
   DESROY, Nicolas
   JEAN, Fred
AS 1:1;2:1;3:2;4:3;
FF 1:PDG-ODE-DYNECO-LEBCO;2:PDG-ODE-DYNECO;3:PDG-ODE-LITTORAL-LERBN;4:;
C1 IFREMER, Ctr Bretagne, DYNECO LEBCO, Plouzane, France.
   IFREMER, Lab Environm & Ressources Bretagne Nord, Stn CRESCO, Dinard, France.
   Univ Brest, Inst Univ Europeen Mer, LEMAR, UBO,CNRS,IRD, Plouzane, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   UBO, FRANCE
SI BREST
   DINARD
SE PDG-ODE-DYNECO-LEBCO
   PDG-ODE-DYNECO
   PDG-ODE-LITTORAL-LERBN
UM LEMAR
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
   copubli-univ-france
IF 2.353
TC 2
UR https://archimer.ifremer.fr/doc/00445/55654/57319.pdf
   https://archimer.ifremer.fr/doc/00445/55654/57320.pdf
LA English
DT Article
DE ;Individual-based model;Inter-scale modeling;Functional groups;Benthic macroinvertebrates;Community assembly;Biological traits;Biotic interactions;alpha-diversity;beta-diversity;Rance estuary
AB 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. 
PY 2018
PD JUL
SO Peerj
SN 2167-8359
PU Peerj Inc
VL 6
UT 000435510100008
DI 10.7717/peerj.5038
ID 55654
ER

EF