Long-term trends in wildlife community structure and functional diversity in a village hunting zone in southeast Cameroon

2019 ◽  
Vol 29 (2) ◽  
pp. 571-590 ◽  
Author(s):  
Nikki Tagg ◽  
Jacques Keumo Kuenbou ◽  
Daan Willem Laméris ◽  
Fany Michelle Kamkeng Meigang ◽  
Sévilor Kekeunou ◽  
...  
Keyword(s):  
Community Structure ◽  
Functional Diversity ◽  
Long Term Trends

scholarly journals Long‐term trends in the phylogenetic and functional diversity of Anatidae in South China coastal wetlands

2021 ◽  
Author(s):  
Xianli Che ◽  
Min Zhang ◽  
Xuebing Zhao ◽  
Qiang Zhang ◽  
Yanyan Zhao ◽  
...  
Keyword(s):  
Functional Diversity ◽  
South China ◽  
Coastal Wetlands ◽  
Long Term Trends

scholarly journals Long-term changes in the species and functional diversity of a fine sand macrobenthic community in the English Channel

2018 ◽  
Author(s):  
Lise Bacouillard ◽  
Noémie Baux ◽  
Jean-Claude Dauvin ◽  
Nicolas Desroy ◽  
Katja Juliana Geiger ◽  
...  
Keyword(s):  
Community Structure ◽  
Functional Diversity ◽  
Regional Scale ◽  
Monitoring Program ◽  
Diversity Indices ◽  
Population Fluctuations ◽  
Α Diversity ◽  
Long Term Changes ◽  
Functional Diversity Indices

In the eastern Bay of Seine, which is a representative area of coastal zones exposed to numerous anthropogenic disturbances, data from a long-term monitoring program of the benthic macrofauna based on a framework of 60 stations sampled during 7 cruises from 1988 to 2016 were used to investigate the link between species and functional diversity at different scales and assess how long-term changes in the community structure may have altered the ecosystem functioning. To cover the different facets of α-diversity, a selection of species and functional diversity indices were calculated and the links between these metrics were determined from a Principal Component Analysis. The β-diversity was analysed by applying multivariate methods on both species and traits composition matrices. Population fluctuations of a few very abundant species led to the major variations observed in the structure of the community in both taxonomic and functional aspects. A certain redundancy was found among species and functional diversity indices in terms of richness, evenness and heterogeneity. Likewise, at regional scale, similar patterns were reported on the spatial structure of the community in terms of species and trait composition. These patterns persist over time suggesting that the community structure and its functioning are rather resilient.

Intakes as Sampling Locations for Investigating Long-Term Trends in Zooplankton Populations

1984 ◽  
Vol 41 (10) ◽  
pp. 1513-1518 ◽  
Author(s):  
Marlene S. Evans ◽  
Loren E. Flath
Keyword(s):  
Community Structure ◽  
Power Plant ◽  
Lake Michigan ◽  
Population Estimates ◽  
Sampling Location ◽  
Water Interface ◽  
Accurate Representation ◽  
Sampling Locations ◽  
Long Term Trends

We present data demonstrating the representativeness of a power plant intake as a sampling location for investigating long-term trends in zooplankton populations. The intake (Donald C. Cook Nuclear Plant) and the inshore region (southeastern Lake Michigan) were sampled within a matter of days on 54 occasions between April 1975 and November 1981. Intake population estimates were significantly correlated with inshore region population estimates for all 26 zooplankton taxa categories analyzed. Differences in abundances in intake and inshore region samples were not significant for most euplanktonic taxa. The plant apparently entrained water and microcrustaceans from the sediment–water interface. However, because vertically hauled plankton nets do not effectively sample the lower 1 m of the water column, intake sampling may provide a more accurate representation of nearshore region copepod and cladoceran community structure than traditionally employed methods for inshore region sampling.

Long-term trends in the abundance and community structure of coastal zooplankton in the southern Benguela system, 1951–1996

1998 ◽  
Vol 19 (1) ◽  
pp. 317-332 ◽  
Author(s):  
H. M. Verheye ◽  
A. J. Richardson ◽  
L. Hutchings ◽  
G. Marska ◽  
D. Gianakouras
Keyword(s):  
Community Structure ◽  
Long Term Trends

Long-term trends in fish community composition across coastal bays and lakes in the Lavaca–Colorado Estuary

2016 ◽  
Vol 94 (12) ◽  
pp. 871-884 ◽  
Author(s):  
Philip Matich ◽  
William B. Godwin ◽  
Mark Fisher
Keyword(s):  
Community Structure ◽  
Community Composition ◽  
Temporal Variability ◽  
Human Impacts ◽  
Fish Communities ◽  
Spatial And Temporal Variability ◽  
Important Species ◽  
Coastal Bays ◽  
Long Term Trends

Human impacts continue to alter community structure, emphasizing the need to understand how spatial and temporal variability in disturbance and conservation affect ecological communities to optimize management strategies. Here, we quantify fish species richness, diversity, and community structure across five coastal bays and lakes in the Lavaca–Colorado Estuary, Texas, over 30 years to investigate spatial and temporal variability in species assemblages, and the potential effects of resource management. Results suggest that fish communities varied both spatially and temporally from 1976 to 2008, with greater temporal shifts in habitats more proximate to the Gulf of Mexico and removed from human residential areas — diversity increased in Powderhorn Lake and spotted seatrout (Cynoscion nebulosus (Cuvier, 1830)) and red drum (Sciaenops ocellatus (L., 1766)) abundances increased in Oyster Lake following changes in fishing regulations. Natural fluctuations in environmental conditions coupled with limited access to lakes by geographic restraints may have led to more pronounced changes in community structure. However, the effects of fishing management on fish communities within small lakes and bays within the Lavaca–Colorado Estuary is likely habitat- and context-specific, and continued monitoring, especially among ecologically and economically important species, will provide insight into how environmental change and anthropogenic disturbance may affect long-term trends in coastal community composition.

scholarly journals Long-term changes in the species and functional diversity of a fine sand macrobenthic community in the English Channel

2018 ◽  
Author(s):  
Lise Bacouillard ◽  
Noémie Baux ◽  
Jean-Claude Dauvin ◽  
Nicolas Desroy ◽  
Katja Juliana Geiger ◽  
...  
Keyword(s):  
Community Structure ◽  
Functional Diversity ◽  
Regional Scale ◽  
Monitoring Program ◽  
Diversity Indices ◽  
Population Fluctuations ◽  
Α Diversity ◽  
Long Term Changes ◽  
Functional Diversity Indices

In the eastern Bay of Seine, which is a representative area of coastal zones exposed to numerous anthropogenic disturbances, data from a long-term monitoring program of the benthic macrofauna based on a framework of 60 stations sampled during 7 cruises from 1988 to 2016 were used to investigate the link between species and functional diversity at different scales and assess how long-term changes in the community structure may have altered the ecosystem functioning. To cover the different facets of α-diversity, a selection of species and functional diversity indices were calculated and the links between these metrics were determined from a Principal Component Analysis. The β-diversity was analysed by applying multivariate methods on both species and traits composition matrices. Population fluctuations of a few very abundant species led to the major variations observed in the structure of the community in both taxonomic and functional aspects. A certain redundancy was found among species and functional diversity indices in terms of richness, evenness and heterogeneity. Likewise, at regional scale, similar patterns were reported on the spatial structure of the community in terms of species and trait composition. These patterns persist over time suggesting that the community structure and its functioning are rather resilient.

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