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Fish species richness is associated with the availability of landscape components across seasons in the Amazonian floodplain

Carvalho Freitas, Carlos Edwar, Laurenson, Laurie, Yamamoto, Kedma Cristine, Forsberg, Bruce Rider, Petrere, Miguel, Arantes, Caroline and Siqueira-Souza, Flavia Kelly 2018, Fish species richness is associated with the availability of landscape components across seasons in the Amazonian floodplain, PeerJ, vol. 6, pp. 1-16, doi: 10.7717/peerj.5080.

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Title Fish species richness is associated with the availability of landscape components across seasons in the Amazonian floodplain
Author(s) Carvalho Freitas, Carlos Edwar
Laurenson, LaurieORCID iD for Laurenson, Laurie orcid.org/0000-0003-2321-7512
Yamamoto, Kedma Cristine
Forsberg, Bruce Rider
Petrere, Miguel
Arantes, Caroline
Siqueira-Souza, Flavia Kelly
Journal name PeerJ
Volume number 6
Article ID e5080
Start page 1
End page 16
Total pages 16
Publisher PeerJ Inc.
Place of publication Corte Madera, Calif.
Publication date 2018-06-21
ISSN 2167-8359
Keyword(s) fish diversity
Amazon basin
spatial environmental variables
wetlands
science & technology
Summary Understanding environmental biodiversity drivers in freshwater systems continues to be a fundamental challenge in studies of their fish assemblages. The present study seeks to determine the degree to which landscape variables of Amazonian floodplain lakes influences fish assemblages in these environments. Fish species richness was estimated in 15 Amazonian floodplain lakes during the high and low-water phases and correlated with the areas of four inundated wetland classes: (i) open water, (ii) flooded herbaceous, (iii) flooded shrubs and (iv) flooded forest estimated in different radius circular areas around each sampling site. Data were analyzed using generalized linear models with fish species richness, total and guilds as the dependent variable and estimates of buffered landscape areas as explanatory variables. Our analysis identified the significance of landscape variables in determining the diversity of fish assemblages in Amazonian floodplain lakes. Spatial scale was also identified as a significant determinant of fish diversity as landscape effects were more evident at larger spatial scales. In particular, (1) total species richness was more sensitive to variations in the landscape areas than number of species within guilds and (2) the spatial extent of the wetland class of shrubs was consistently the more influential on fish species diversity.
Language eng
DOI 10.7717/peerj.5080
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2018, Carvalho Freitas et al.
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30113338

Document type: Journal Article
Collections: School of Life and Environmental Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.