Fish species richness is associated with the availability of landscape components across seasons in the Amazonian floodplain
Open accessAbstract
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.
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Observed species-specific and community-wide thresholds in relation to forest cover were consistent with the view that floodplain forest cover influences the structure of fish assemblages through environmental filtering in the Amazon.
“Overall, observed species‐specific and community‐wide thresholds in relation to forest cover were consistent with the view that floodplain forest cover influences the structure of fish assemblages through environmental filtering in the Amazon (Arantes, Winemiller, Asher, et al., 2019; Freitas et al., 2018; Montag et al., 2019).”
From Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River (2025) · cites this paper as Freitas et al., 2018
The Discussion reports that Amazonian fish assemblages respond to the extent of landscape components, supporting the broad link between habitat cover and assemblage structure. But it identifies shrubs, herbaceous vegetation and open water as the main associations; our copy does not report forest-cover thresholds or establish environmental filtering as the mechanism. (LLM, conf=0.84)
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Cited by
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Grinstead, S., Arantes, C. C., Winemiller, K. O., Kelso‐Winemiller, L. C., de Oliveira, J. A., Petrere, M., & Freitas, C. E. C. (2025) · Conservation Biology · doi:10.1111/cobi.70110
Self-citation
- Authors
- Carvalho Freitas, C. E., Laurenson, L., Yamamoto, K. C., Forsberg, B. R., Petrere, M., Arantes, C., & Siqueira-Souza, F. K.
- Affiliations
- Department of Fisheries Sciences/Faculty of Agriculture Sciences, Federal University of Amazonas, Manaus, Amazonas, Brazil
- Deakin University (AU)
- Universidade Federal do Amazonas (BR)
- Instituto Nacional de Pesquisas da Amazônia (BR)
- Universidade Federal do Pará (BR)
- University of Michigan (US)
- ORCID
- Venue
- PeerJ
- Publisher
- PeerJ
- Published
- 2018-06-21
- Volume
- 6
- Pages
- e5080
- ISSN
- 2167-8359 (ISSN-L)
- PMC
- PMC6015757
- OpenAlex
- W2809658360
- Cited by
- 32
- References
- 1
- Citations by year
- 2025: 5 · 2024: 9 · 2023: 2 · 2022: 3 · 2021: 7 · 2020: 5 · 2018: 1
- FWCI
- 2.55
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- PeerJ (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Figshare (submittedVersion, cc-by)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by-nc-nd)
- Funders
- CNPq (302807/2015-2, 200893/2012-2)
- FINEP (PIATAM Project)
- Applied Biodiversity Science Program (ABS/NSF-IGERT)
- Texas A&M University
- Topics
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish biology, ecology, and behavior
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish Ecology and Management Studies
- Physical Sciences › Environmental Science › Ecology › Freshwater macroinvertebrate diversity and ecology
- Keywords
- fish species richness, Amazonian floodplain lakes, landscape elements, seasonal variation, spatial scale, fish guilds, flooded forest, freshwater biodiversity, environmental drivers of diversity
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