| Texto completo | |
| Autor(es): |
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]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [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
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Acta Botanica Brasilica; v. 35, n. 1, p. 37-45, JAN-MAR 2021. |
| Citações Web of Science: | 1 |
| Resumo | |
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 Itanhaém River basin (São 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) | |
| Processo FAPESP: | 12/08510-5 - Influência de um gradiente ambiental fluvial na distribuição de algumas espécies de macrófitas aquáticas na bacia do Rio Itanhaém, SP. |
| Beneficiário: | Gisele Biem Mori |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |