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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Different scales determine the occurrence of aquatic macrophyte species in a tropical stream

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Author(s):
Mori, Gisele Biem [1, 2] ; Fernandez Piedade, Maria Teresa [2] ; Lopes, Aline [2, 3] ; de Barros Ferraz, Silvio Frosini [4] ; Cancian, Leonardo Farage [1] ; Monteiro Camargo, Antonio Fernando [1]
Total Authors: 6
Affiliation:
[1] Univ Estadual Paulista, Lab Ecol Aquat, Dept Ecol, Inst Biociencias, BR-13506900 Rio Claro, SP - Brazil
[2] Inst Nacl de Pesquisas da Amazonia, Grp Ecol Monitoramento & Uso Sustentavel Areas Um, BR-69011970 Manaus, Amazonas - Brazil
[3] Univ Brasilia, Inst Ciencias Biol, Coordenacao Ecol, BR-70910900 Brasilia, DF - Brazil
[4] Escola Super Agr Luis Dequeiroz, Lab Hidrol Florestal, Dept Ciencias Florestais, BR-13418900 Piracicaba, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Acta Botanica Brasilica; v. 35, n. 1, p. 37-45, JAN-MAR 2021.
Web of Science Citations: 1
Abstract

Distributions of aquatic macrophyte species are commonly associated with water chemistry characteristics. However, other environmental factors that can lead to the occurrence of aquatic plants in lotic ecosystems, such as dynamic habitats linked to the surrounding landscape, have been underestimated. This study aims to evaluate landscape features that may influence the occurrence of species of euhydrophyte aquatic macrophytes in a tropical river basin. We assessed the occurrence of the following seven species: Egeria densa, Cabomba furcata, Potamogeton pusillus, Potamogeton polygonus, Utricularia foliosa, Pistia stratiotes and Salvinia molesta. We also measured environmental variables related to three spatial scales, local (limnological), channel and riparian landscape, along 25.5 Km of the Itanhaem River basin (Sao Paulo, Brazil). We found that local (limnological) and channel characteristics were important variables in determining the occurrence of aquatic macrophyte species while the landscape scale had little influence on species composition. Channel depth and margin slope were especially relevant abiotic variables in explaining the occurrence of four of the species but not P. pusillus, P. polygonus and U. foliosa. Our results highlight the importance of channel morphology for understanding aquatic plant occurrence and community composition in tropical rivers. (AU)

FAPESP's process: 12/08510-5 - Influence of an environmental fluvial gradient in the distribution of some species of aquatic macrophytes in the Rio Itanhaém riverbasin, SP
Grantee:Gisele Biem Mori
Support type: Scholarships in Brazil - Master