Rights statement: This is the peer reviewed version of the following article: Queiroz‐Sousa, J, Keith, SA, David, GS, et al. Species richness and functional structure of fish assemblages in three freshwater habitats: effects of environmental factors and management. J Fish Biol. 2019; 95: 1125– 1136. https://doi.org/10.1111/jfb.14109 which has been published in final form at https://onlinelibrary.wiley.com/doi/full/10.1111/jfb.14109 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
Accepted author manuscript, 2.34 MB, PDF document
Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Species richness and functional structure of fish assemblages in three freshwater habitats
T2 - effects of environmental factors and management
AU - Queiroz-Sousa, J.
AU - Keith, S.A.
AU - David, G.S.
AU - Brandão, H.
AU - Nobile, A.B.
AU - Paes, J.V.K.
AU - Souto, A.C.
AU - Lima, F.P.
AU - Silva, R.J.
AU - Henry, R.
AU - Richardson, K.
N1 - This is the peer reviewed version of the following article: Queiroz‐Sousa, J, Keith, SA, David, GS, et al. Species richness and functional structure of fish assemblages in three freshwater habitats: effects of environmental factors and management. J Fish Biol. 2019; 95: 1125– 1136. https://doi.org/10.1111/jfb.14109 which has been published in final form at https://onlinelibrary.wiley.com/doi/full/10.1111/jfb.14109 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - In this study, the inverted trophic hypothesis was tested in the freshwater fish communities of a reservoir. The distribution of fish species in three freshwater habitats in the Jurumirim Reservoir, Brazil, was examined using both species richness and the relative proportions of different trophic groups. These groups were used as a proxy for functional structure in an attempt to test the ability of these measures to assess fish diversity. Assemblage structures were first described using non‐metric multidimensional scaling (NMDS). The influence of environmental conditions for multiple fish assemblage response variables (richness, total abundance and abundance per trophic group) was tested using generalised linear mixed models (GLMM). The metric typically employed to describe diversity; that is, species richness, was not related to environmental conditions. However, absolute species abundance was relatively well explained with up to 54% of the variation in the observed data accounted for. Differences in the dominance of trophic groups were most apparent in response to the presence of introduced fish species: the iliophagous and piscivorous trophic groups were positively associated, while detritivores and herbivores were negatively associated, with the alien species. This suggests that monitoring functional diversity might be more valuable than species diversity for assessing effects of disturbances and managements policies on the fish community.
AB - In this study, the inverted trophic hypothesis was tested in the freshwater fish communities of a reservoir. The distribution of fish species in three freshwater habitats in the Jurumirim Reservoir, Brazil, was examined using both species richness and the relative proportions of different trophic groups. These groups were used as a proxy for functional structure in an attempt to test the ability of these measures to assess fish diversity. Assemblage structures were first described using non‐metric multidimensional scaling (NMDS). The influence of environmental conditions for multiple fish assemblage response variables (richness, total abundance and abundance per trophic group) was tested using generalised linear mixed models (GLMM). The metric typically employed to describe diversity; that is, species richness, was not related to environmental conditions. However, absolute species abundance was relatively well explained with up to 54% of the variation in the observed data accounted for. Differences in the dominance of trophic groups were most apparent in response to the presence of introduced fish species: the iliophagous and piscivorous trophic groups were positively associated, while detritivores and herbivores were negatively associated, with the alien species. This suggests that monitoring functional diversity might be more valuable than species diversity for assessing effects of disturbances and managements policies on the fish community.
KW - Mixed effects models
KW - nutrients
KW - reservoir
KW - sedimentation
KW - trophic level
U2 - 10.1111/jfb.14109
DO - 10.1111/jfb.14109
M3 - Journal article
VL - 95
SP - 1125
EP - 1136
JO - Journal of Fish Biology
JF - Journal of Fish Biology
SN - 0022-1112
IS - 4
ER -