Are we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest.

One of the central goals of ecology is to determine the mechanisms that enable coexistence among species. Evidence is accruing that conspecific negative density dependence (CNDD), the process by which plant seedlings are unable to survive in the area surrounding adults of their same species, is a ma...

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Autores principales:	Kathryn E Barry, Stefan A Schnitzer
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e38f98a1e392422b9010810d47cad545
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spelling	oai:doaj.org-article:e38f98a1e392422b9010810d47cad5452021-12-02T20:05:03ZAre we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest.1932-620310.1371/journal.pone.0245639https://doaj.org/article/e38f98a1e392422b9010810d47cad5452021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0245639https://doaj.org/toc/1932-6203One of the central goals of ecology is to determine the mechanisms that enable coexistence among species. Evidence is accruing that conspecific negative density dependence (CNDD), the process by which plant seedlings are unable to survive in the area surrounding adults of their same species, is a major contributor to tree species coexistence. However, for CNDD to maintain community-level diversity, three conditions must be met. First, CNDD must maintain diversity for the majority of the woody plant community (rather than merely specific groups). Second, the pattern of repelled recruitment must increase in with plant size. Third, CNDD should extend to the majority of plant life history strategies. These three conditions are rarely tested simultaneously. In this study, we simultaneously test all three conditions in a woody plant community in a North American temperate forest. We examined whether understory and canopy woody species across height categories and dispersal syndromes were overdispersed-a spatial pattern indicative of CNDD-using spatial point pattern analysis across life history stages and strategies. We found that there was a strong signal of overdispersal at the community level. Across the whole community, larger individuals were more overdispersed than smaller individuals. The overdispersion of large individuals, however, was driven by canopy trees. By contrast, understory woody species were not overdispersed as adults. This finding indicates that the focus on trees for the vast majority of CNDD studies may have biased the perception of the prevalence of CNDD as a dominant mechanism that maintains community-level diversity when, according to our data, CNDD may be restricted largely to trees.Kathryn E BarryStefan A SchnitzerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0245639 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kathryn E Barry Stefan A Schnitzer Are we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest.
description	One of the central goals of ecology is to determine the mechanisms that enable coexistence among species. Evidence is accruing that conspecific negative density dependence (CNDD), the process by which plant seedlings are unable to survive in the area surrounding adults of their same species, is a major contributor to tree species coexistence. However, for CNDD to maintain community-level diversity, three conditions must be met. First, CNDD must maintain diversity for the majority of the woody plant community (rather than merely specific groups). Second, the pattern of repelled recruitment must increase in with plant size. Third, CNDD should extend to the majority of plant life history strategies. These three conditions are rarely tested simultaneously. In this study, we simultaneously test all three conditions in a woody plant community in a North American temperate forest. We examined whether understory and canopy woody species across height categories and dispersal syndromes were overdispersed-a spatial pattern indicative of CNDD-using spatial point pattern analysis across life history stages and strategies. We found that there was a strong signal of overdispersal at the community level. Across the whole community, larger individuals were more overdispersed than smaller individuals. The overdispersion of large individuals, however, was driven by canopy trees. By contrast, understory woody species were not overdispersed as adults. This finding indicates that the focus on trees for the vast majority of CNDD studies may have biased the perception of the prevalence of CNDD as a dominant mechanism that maintains community-level diversity when, according to our data, CNDD may be restricted largely to trees.
format	article
author	Kathryn E Barry Stefan A Schnitzer
author_facet	Kathryn E Barry Stefan A Schnitzer
author_sort	Kathryn E Barry
title	Are we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest.
title_short	Are we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest.
title_full	Are we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest.
title_fullStr	Are we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest.
title_full_unstemmed	Are we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest.
title_sort	are we missing the forest for the trees? conspecific negative density dependence in a temperate deciduous forest.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/e38f98a1e392422b9010810d47cad545
work_keys_str_mv	AT kathrynebarry arewemissingtheforestforthetreesconspecificnegativedensitydependenceinatemperatedeciduousforest AT stefanaschnitzer arewemissingtheforestforthetreesconspecificnegativedensitydependenceinatemperatedeciduousforest
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Are we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest.

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