A comparative analysis reveals weak relationships between ecological factors and beta diversity of stream insect metacommunities at two spatial levels

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dc.careerEscuela de Ciencias Biológicases
dc.category.authorprincipales
dc.contributor.authorDangles, Olivier Jacques
dc.contributor.correspondingDangles, Olivier Jacqueses
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:42:08Z
dc.date.available2023-11-04T21:42:08Z
dc.date.issued2015-02-23
dc.dedication.authorTCes
dc.description.abstractThe hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets, and no such study has focused on stream insects. We first assessed how well variability in beta diversity of stream insect metacommunities is predicted by insect group, latitude, spatial extent, altitudinal range, and dataset properties across multiple drainage basins throughout the world. Second, we assessed the relative roles of environmental and spatial factors in driving variation in assemblage composition within each drainage basin. Our analyses were based on a dataset of 95 stream insect metacommunities from 31 drainage basins distributed around the world. We used dissimilarity-based indices to quantify beta diversity for each metacommunity and, subsequently, regressed beta diversity on insect group, latitude, spatial extent, altitudinal range, and dataset properties (e.g., number of sites and percentage of presences). Within each metacommunity, we used a combination of spatial eigenfunction analyses and partial redundancy analysis to partition variation in assemblage structure into environmental, shared, spatial, and unexplained fractions. We found that dataset properties were more important predictors of beta diversity than ecological and geographical factors across multiple drainage basins. In the within-basin analyses, environmental and spatial variables were generally poor predictors of variation in assemblage composition. Our results revealed deviation from general biodiversity patterns because beta diversity did not show the expected decreasing trend with latitude. Our results also call for reconsideration of just how predictable stream assemblages are along ecological gradients, with implications for environmental assessment and conservation decisions. Our findings may also be applicable to other dynamic systems where predictability is low.es
dc.facultyCiencias Exactas y Naturaleses
dc.id.author05-H164551es
dc.id.type1es
dc.identifier.doihttps://doi.org/10.1002/ece3.1439es
dc.identifier.issn2045-7758
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/10.1002/ece3.1439es
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/5919
dc.indexed.databaseScimago Journal Rankes
dc.list.authorsHeino, J., Melo, A., Bini, L., Altermatt, F., Al-Shami, S., Angeler, D., Bonada, N., Brand, C., Callisto, M., Cottenie, K., Dangles, O., Dudgeon, D., Encalada, A., Göthe, E., Grönroos, M., Hamada, N., Jacobsen, D., Landeiro, V., Ligeiro, R., Martins, R., Miserendino, M., Rawi, C., Rodrigues, M., Roque, F., Sandin, L., Schmera, D., Sgarbi, L., Simaika, J., Siqueira, T., Thompson, R., y Townsend, C.es
dc.magazine.pageRange1235-1248es
dc.magazine.titleEcology and Evolutiones
dc.magazine.volumeChapter5 (6)es
dc.rightsOpenAccesses
dc.statepublishedes
dc.subjectBiodiversidades
dc.subjectInsectoses
dc.subjectEcosistemases
dc.titleA comparative analysis reveals weak relationships between ecological factors and beta diversity of stream insect metacommunities at two spatial levelses
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