NDLI: Ontogenetic shifts in habitat-association of tree species in a neotropical wetland

Content Provider	Springer Nature Link
Author	Arieira, Julia Penha, Jerry Nunes da Cunha, C. Couto, E. Guimarães
Copyright Year	2016
Abstract	We evaluated whether habitat association is consistent between two tree life history stages, young and adult, and whether spatial gradients explain species composition variation.We investigated habitat association of tree assemblages using multivariate regression tree analysis (MRT). Habitat preference was assayed using indicator species analysis. We addressed the contribution of pure environment (i.e. habitat), spatially structured environment and pure space on species composition variation using variation partitioning by partial redundancy analysis (pRDA). Principal coordinates of neighbor matrices (PCNM) were used to produce spatial regressors.Habitat association changed during plant ontogeny. Flooding depth explained differences in species composition at young tree stages. Distribution pattern of adult trees was explained by spatial variation in soil fertility. Pure space explained a higher fraction of community variability of young trees (16 %) than habitat (5 %). In contrast, adult trees were structured mostly by habitat (10 %).Niche expansion was observed along tree ontogeny, with adult trees occupying a wider range of flooding conditions. The higher effect of pure space on young tree distribution highlights the importance of distance-dependent processes (e.g. dispersal) on the variation in community composition. The large unexplained component resulted from variation partitioning indicates that stochastic environmental events (e.g. climate histories) might contribute to explaining tree assemblage dynamics in the Pantanal system.
Starting Page	219
Ending Page	236
Page Count	18
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	404
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-02-27
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ontogenetic shifts Floodplain Spatial processes Variation partitioning Soil fertility PCNM Redundancy analysis Plant Sciences Soil Science & Conservation Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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