Local habitat is a strong determinant of spatial and temporal patterns of macrophyte diversity and composition in boreal lakes
نویسندگان
چکیده
Macrophyte species and trait assemblages from 104 minimally disturbed boreal forest lakes, covering broad environmental geographic gradients were analysed to identify associations with variables at different spatial scales: context (GEO) catchment (CATCH) lake (LOCAL) characteristics.Constrained ordination variation partitioning used quantify in (canonical correspondence analysis [CCA] pCCA) (redundancy [RDA] pRDA) compositions that could be explained by variables, rank the main factors associated temporal patterns.Diversity assemblage composition correlated related length of growing season, type characteristics such as ecosystem size, productivity alkalinity.Variation showed alone 53% (species) 73.5% (traits) variability macrophyte assemblages. Contrary predictions, shared variance component between latitude (GEO&CATCH 0.05, paired t-test). Ordination among-year was also negligible (0.3%) compared GEO, CATCH LOCAL variables. Combined, these findings indicate low turnover lakes our study.Responses TMI index predictable significantly nutrient enrichment (Chl a, nutrients) alkalinity supporting their use monitoring eutrophication lakes.
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ژورنال
عنوان ژورنال: Freshwater Biology
سال: 2021
ISSN: ['0046-5070', '1365-2427']
DOI: https://doi.org/10.1111/fwb.13733