Functional richness and turnover patterns reveal assembly rules structuring marine fish communities on the continental shelf of French Guiana

2019 ◽  
Vol 630 ◽  
pp. 183-195 ◽  
Author(s):  
V Vallée ◽  
MC Villanueva ◽  
F Blanchard
2018 ◽  
Vol 75 (7) ◽  
pp. 2463-2475 ◽  
Author(s):  
Romain Frelat ◽  
Alessandro Orio ◽  
Michele Casini ◽  
Andreas Lehmann ◽  
Bastien Mérigot ◽  
...  

Abstract Fisheries and marine ecosystem-based management requires a holistic understanding of the dynamics of fish communities and their responses to changes in environmental conditions. Environmental conditions can simultaneously shape the spatial distribution and the temporal dynamics of a population, which together can trigger changes in the functional structure of communities. Here, we developed a comprehensive framework based on complementary multivariate statistical methodologies to simultaneously investigate the effects of environmental conditions on the spatial, temporal and functional dynamics of species assemblages. The framework is tested using survey data collected during more than 4000 fisheries hauls over the Baltic Sea between 2001 and 2016. The approach revealed the Baltic fish community to be structured into three sub-assemblages along a strong and temporally stable salinity gradient decreasing from West to the East. Additionally, we highlight a mismatch between species and functional richness associated with a lower functional redundancy in the Baltic Proper compared with other sub-areas, suggesting an ecosystem more susceptible to external pressures. Based on a large dataset of community data analysed in an innovative and comprehensive way, we could disentangle the effects of environmental changes on the structure of biotic communities—key information for the management and conservation of ecosystems.


2020 ◽  
Vol 35 ◽  
pp. 101105 ◽  
Author(s):  
Anna Le Joncour ◽  
Fabian Blanchard ◽  
Morgana Tagliarolo

Author(s):  
K. Martha M. Jones ◽  
Dean G. Fitzgerald ◽  
Peter F. Sale

2019 ◽  
Vol 652 ◽  
pp. 1482-1496 ◽  
Author(s):  
Atabak M. Azad ◽  
Sylvia Frantzen ◽  
Michael S. Bank ◽  
Bente M. Nilsen ◽  
Arne Duinker ◽  
...  

2009 ◽  
Vol 18 (2) ◽  
pp. 83-101 ◽  
Author(s):  
BRIAN PETRIE ◽  
KENNETH T. FRANK ◽  
NANCY L. SHACKELL ◽  
WILLIAM C. LEGGETT

2013 ◽  
Vol 82 (6) ◽  
pp. 1821-1847 ◽  
Author(s):  
M. Pinault ◽  
N. Loiseau ◽  
P. Chabanet ◽  
P. Durville ◽  
H. Magalon ◽  
...  
Keyword(s):  

2019 ◽  
Vol 66 (4) ◽  
Author(s):  
Mamun Abdullah Al ◽  
Aysha Akhtar ◽  
Abu Hena Mustafa Kamal ◽  
Muhammed Farruq Rahman ◽  
Md. Shafiqul Islam ◽  
...  

The structural variability and composition of fish communities in the northern continental shelf of the Bay of Bengal, Bangladesh were assessed from monsoon 2014 to pre-monsoon 2015. A total of 73 species belonging to 43 orders, comprising 61 species of finfishes and 12 species of shellfishes were identified from estuarine set bag net (ESBN) fisheries. Of these, sixty species were commonly found throughout the study period and while nine species were dominant with higher contribution to the total communities. Community parameters and abundance were higher in monsoon and lower in winter. Multivariate analysis revealed a clear structural and compositional variation in fish communities. Furthermore, RELATE (coefficient of correlation between the fisheries communities and environmental parameters) and BIOENV/BEST (Biotaenvironment best matching) analyses showed that these variations were driven by both single (transparency) and multistressors [transparency in combination with associated factors such as salinity, total dissolved solids (TDS), total suspended solids (TSS), phosphate-phosphorus (PO4-P) and nitrite-nitrogen (NO2-N)]. Community parameters showed significant positive correlation with transparency, salinity and PO4-P which indicated that structure of fish communities is shaped by ecological conditions in this coastal habitat.


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