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Flores-Galicia N, Trejo I, Ramírez-Marcial N. Environment-driven changes in diversity of riparian plant communities along a mountain river. Ecol Evol. 2021;11(10):5690-5701doi: 10.1002/ece3.7472.
Flores-Galicia, N., Trejo, I., & Ramírez-Marcial, N. (2021). Environment-driven changes in diversity of riparian plant communities along a mountain river. Ecology and evolution, 11(10), 5690-5701. https://doi.org/10.1002/ece3.7472
Flores-Galicia, Nihaib, et al. "Environment-driven changes in diversity of riparian plant communities along a mountain river." Ecology and evolution vol. 11,10 (2021): 5690-5701. doi: https://doi.org/10.1002/ece3.7472
Flores-Galicia N, Trejo I, Ramírez-Marcial N. Environment-driven changes in diversity of riparian plant communities along a mountain river. Ecol Evol. 2021 Mar 25;11(10):5690-5701. doi: 10.1002/ece3.7472. eCollection 2021 May. PMID: 34026040; PMCID: PMC8131774.
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Ecol Evol. 2021 Mar 25;11(10):5690-5701. doi: 10.1002/ece3.7472. eCollection 2021 May.

Environment-driven changes in diversity of riparian plant communities along a mountain river.

Ecology and evolution

Nihaib Flores-Galicia, Irma Trejo, Neptalí Ramírez-Marcial

Affiliations

  1. Posgrado en Ciencias Biológicas Universidad Nacional Autónoma de México Unidad de Posgrado Circuito de Posgrados Ciudad Universitaria Ciudad de México México.
  2. Instituto de Geografía Circuito de la Investigación Científica Ciudad Universitaria Universidad Nacional Autónoma de México Ciudad de México México.
  3. Departamento de Conservación de la Biodiversidad El Colegio de la Frontera Sur San Cristóbal de Las Casas Chiapas México.

PMID: 34026040 PMCID: PMC8131774 DOI: 10.1002/ece3.7472

Abstract

The study of changes in species richness and composition along rivers has focused on large spatial scales. It has been ignored that in different sections of the river (high mountain area, middle zone, and mouth of the river) the specific environmental conditions can generate different longitudinal patterns of the species richness and composition. In this study, we determine whether species richness and composition of the riparian plant communities change along a mountain river and whether these changes are related to environmental variables. We expect an increase in species richness and turnover along the river, that the upstream communities would be a subset of the downstream communities, and that such would be related to edaphic and hydrologic conditions. To test this, we sampled three strata of the riparian vegetation (upper: individuals with <1 cm of ND, middle: individuals with >1 cm of ND, low: individuals with >1 m tall) in a set of 15 sites that we place along a mountain river. Additionally, we recorded topographic, hydrological, morphological, and soil variables. We performed correlation analyzes to determine whether changes in species richness and turnover were related to increased distance to the origin of the river. Also, we obtained the nestedness and evaluated the importance of environmental variables with GLM, LASSO regression, and CCA. With the increase in distance, the species richness decreases in the upper stratum, but not in the middle and the low stratum (although the highest values were observed near the origin of the river), the turnover increase in all strata and the upstream communities were not a subset of the downstream communities. The changes in species richness and composition were related to topographic (altitude), hydrological (flow), and edaphic (conductivity and pH) variables. Our results indicate that at small spatial scales the patterns of richness and composition differ from what has been found at larger spatial scales and that these patterns are associated with environmental changes in the strong altitude gradients of mountain rivers.

© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.

Keywords: River; River Collector Hypothesis; altitudinal gradient; diversity of species; longitudinal dimension; mountain river

Conflict of interest statement

The authors declare that we have no conflict of interest.

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