NDLI: Tree species exhibit complex patterns of distribution in bottomland hardwood forests

Content Provider	Springer Nature Link
Author	Dimov, Luben D. Chambers, Jim L. Lockhart, Brian Roy
Copyright Year	2013
Abstract	Understanding tree interactions requires an insight into their spatial distribution.We looked for presence and extent of tree intraspecific spatial point pattern (random, aggregated, or overdispersed) and interspecific spatial point pattern (independent, aggregated, or segregated).We established twelve 0.64-ha plots in natural bottomland hardwood stands in the southeastern USA.Spatial point pattern analyses (Ripley’s K, L, and L $_{12}$) indicated that, when species were combined, trees were frequently aggregated and less commonly overdispersed. Plots with larger trees were more likely to exhibit overdispersion, confirming a shift to this pattern as trees grow. The intraspecific pattern of cherrybark oak and water oak was either aggregated or random. Sweetgum was aggregated on all plots and always at smaller distances (less than 5 m) than the two oak species. Intraspecific overdispersion was very rare. Interspecific segregation among the two oak species was more commonly observed (six plots) than aggregation (one plot). Cherrybark oak and sweetgum were segregated at some scale on seven of the 12 plots and aggregated on only two plots.The results from the analyses suggest that strong interspecific competition may result in segregation of trees from different species, while weaker intraspecific competition may lead to aggregations of conspecifics.
Starting Page	813
Ending Page	823
Page Count	11
File Format	PDF
ISSN	12864560
Journal	Annals of Forest Science
Volume Number	70
Issue Number	8
e-ISSN	1297966X
Language	English
Publisher	Springer Paris
Publisher Date	2013-09-19
Publisher Institution	Institut National de la Recherche Agronomique (INRA)
Publisher Place	Paris
Access Restriction	Subscribed
Subject Keyword	Univariate and bivariate tree spatial patterns Forestry Wood Science & Technology Forestry Management Tree Biology Environment
Content Type	Text
Resource Type	Article
Subject	Ecology Forestry

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