| Texto completo | |
| Autor(es): |
Mateus-Barros, Erick
;
Caliman, Adriano
;
da Silva, Thais Garcia
;
Sarmento, Hugo
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | AQUATIC ECOLOGY; v. N/A, p. 16-pg., 2025-09-28. |
| Resumo | |
Understanding how spatial factors shape species distribution and geographic range remains a central question in community ecology, particularly for microorganisms with high dispersal capacities. Here, we applied variation partitioning to assess the impact of multiple spatial mechanisms on the beta-diversity of a bacterioplankton metacommunity in 60 shallow lakes distributed across a broad landscape. Linear overland distances between sites provided the best explanation for bacterioplankton beta-diversity, likely reflecting the dominance of ubiquitous, highly abundant bacteria. In contrast, rarer bacteria were associated with local neighborhoods, suggesting lower dispersal capacities. This pattern aligns with observations in other taxa and indicates a potential rescue effect. Moreover, regardless of abundance, most bacteria appear to occupy a geographic range of 600-700 km. Our results suggest that while deterministic factors play a critical role in shaping freshwater bacterial biodiversity, the spatial context also contributes to explaining bacterioplankton dissimilarity and community dynamics. Importantly, selecting the appropriate spatial metric-whether based on presence/absence or abundance data-is crucial for accurately capturing these patterns. (AU) | |
| Processo FAPESP: | 14/14139-3 - Biodiversidade e processos microbianos em ecossistemas aquáticos |
| Beneficiário: | Hugo Miguel Preto de Morais Sarmento |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |
| Processo FAPESP: | 11/50054-4 - Biodiversidade de microalgas de água doce: banco de germoplasma e obtenção de marcadores moleculares das espécies criopreservadas |
| Beneficiário: | Armando Augusto Henriques Vieira |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOTA - Temático |