Taxonomic versus functional diversity metrics: how do fish communities respond to anthropogenic stressors in reservoirs?

2016 ◽  
Vol 26 (4) ◽  
pp. 621-635 ◽  
Author(s):  
Alban Sagouis ◽  
Franck Jabot ◽  
Christine Argillier
Keyword(s):  
Functional Diversity ◽  
Fish Communities ◽  
Anthropogenic Stressors ◽  
Diversity Metrics

scholarly journals Functional diversity metrics detect spatio-temporal changes in the fish communities of a Caribbean marine protected area

Ecosphere ◽  
2018 ◽  
Vol 9 (10) ◽  
pp. e02433 ◽  
Author(s):  
Martha Patricia Rincón-Díaz ◽  
Simon J. Pittman ◽  
Ivan Arismendi ◽  
Selina S. Heppell
Keyword(s):  
Functional Diversity ◽  
Protected Area ◽  
Marine Protected Area ◽  
Fish Communities ◽  
Temporal Changes ◽  
Spatio Temporal ◽  
Diversity Metrics

scholarly journals Environmental DNA effectively captures functional diversity of coastal fish communities

2020 ◽  
Author(s):  
Giorgio Aglieri ◽  
Charles Baillie ◽  
Stefano Mariani ◽  
Carlo Cattano ◽  
Antonio Calò ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Fish Communities ◽  
Environmental Dna ◽  
Coastal Fish

scholarly journals Sensitivity of functional diversity metrics to sampling intensity

2017 ◽  
Vol 8 (9) ◽  
pp. 1072-1080 ◽  
Author(s):  
Fons Plas ◽  
Roel Klink ◽  
Pete Manning ◽  
Han Olff ◽  
Markus Fischer
Keyword(s):  
Functional Diversity ◽  
Sampling Intensity ◽  
Diversity Metrics

scholarly journals Assessing Functional Diversity-Productivity Relationships in Temperate Forests in Northern Mexico

2020 ◽  
Author(s):  
Benedicto Vargas-Larreta ◽  
Jorge O. López-Martínez ◽  
Jose Javier Corral-Rivas ◽  
Francisco Javier Hernández
Keyword(s):  
Species Richness ◽  
Functional Diversity ◽  
Biomass Production ◽  
Temperate Forests ◽  
Taxonomic Diversity ◽  
Mass Ratio ◽  
Above Ground Biomass ◽  
Northern Mexico ◽  
Ground Biomass ◽  
Diversity Metrics

Abstract Background: Studies on the relationships between biodiversity and ecosystem productivity have suggested that species richness and functional diversity are the main drivers of ecosystem processes. There is no general pattern regarding the relationship found in various studies, and positive, unimodal, negative, and neutral relationships keep the issue controversial. In this study, taxonomic diversity vs functional diversity as drivers of above-ground biomass were compared, and the mechanisms that influence biomass production were investigated by testing the complementarity and the mass-ratio hypoteses.Methods: Using data from 414 permanent sampling plots, covering 23% of temperate forests in the Sierra Madre Occiental (Mexico), we estimated the above-ground biomass (AGB) for trees ≥7.5 cm d.b.h. in managed and unmanaged stands. We evaluated AGB-diversity relationships (species richness, Shannon-Wiener and Simpson indices), AGB-weighted mean community values ​​(CWM) of tree species functional traits (maximum height, leaf size, and wood density) and five measures of functional diversity (functional dispersion, functional richness, functional uniformity, functional diversity, and RaoQ index).Results: We reveal a consistent hump-shaped relationship between aboveground biomass and species richness in managen and unmanaged forest. CWM_Hmax was the most important predictor of AGB in both managed and unmanaged stands, which suggests that the mechanism that explains the above-ground biomass in these ecosystems is dominated by certain highly productive species in accordance of the mass-ratio hypothesis. There were no significant relationships between taxonomic diversity metrics (Shannon-Wiener and Simpson indices) or measures of functional diversity with AGB. The results support the mass-ratio hypothesis to explain the AGB variations.Conclusions: We concluded that diversity does not influence biomass production in the temperate mixed-species and uneven-aged forests of northern Mexico. These forests showed the classic hump-shaped productivity-species richness relationship, with biomass accumulation increasing at low to intermediate levels of species plant diversity and decreasing at high species richness. Functional diversity explains better forest productivity than classical diversity metrics.

scholarly journals Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil

2019 ◽  
Vol 36 ◽  
pp. 1-12 ◽  
Author(s):  
Sandra Maria Hartz ◽  
Elise Amador Rocha ◽  
Fernanda Thiesen Brum ◽  
André Luís Luza ◽  
Taís de Fátima Ramos Guimarães ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Fish Communities ◽  
Taxonomic Diversity ◽  
Analytical Framework ◽  
Freshwater Species ◽  
Coastal Lakes ◽  
Causal Connections ◽  
Functional Richness ◽  
Dispersal Abilities ◽  
Functional Evenness

In this study we investigated the influence of landscape variables on the alpha taxonomic and functional diversity of fish communities in coastal lakes. We built an analytical framework that included possible causal connections among variables, which we analyzed using path analysis. We obtained landscape metrics for the area, shape and connectivity (estuary connectivity and primary connectivity to neighboring lakes) of 37 coastal lakes in the Tramandaí River Basin. We collected fish data from 49 species using standardized sampling with gillnets and obtained a set of traits related to dispersal abilities and food acquisition. The model that best explained the taxonomic diversity and functional richness took into account the shape of the lakes. Functional richness was also explained by estuary connectivity. Functional evenness and dispersion were not predicted by area or connectivity, but they were influenced by the abundant freshwater species. This indicates that all lakes support most of the regional functional diversity. The results highlight the importance of the dispersal process in this lake system and allow the conclusion that considering multiple diversity dimensions can aid the conservation of local and regional fish communities.

Sign in / Sign up

Export Citation Format

Share Document