The relationship between trunk- and twigwood density shifts with tree size and species stature

He, Dong; Deane, David C.

doi:10.1016/j.foreco.2016.04.015

Cited by 22 publications

(30 citation statements)

References 36 publications

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“…And relevant processes (e.g. environmental filtering and competition) often leave their signatures on the spatial structure of plant populations and communities (Seabloom et al , Biswas et al ). Linking spatial analyses of species with community trait structure may thus help understand processes underlying community spatial structure (Bartlett et al , Biswas et al , Velázquez et al ).…”

Section: Introductionmentioning

confidence: 99%

“…environmental filtering and competition) often leave their signatures on the spatial structure of plant populations and communities (Seabloom et al , Biswas et al ). Linking spatial analyses of species with community trait structure may thus help understand processes underlying community spatial structure (Bartlett et al , Biswas et al , Velázquez et al ). Interspecies spatial association (hereafter called ‘species association’), in which some pairs of species co‐occur at a particular spatial scale more or less frequently than expected by chance, is a key dimension of community spatial structure (Wiegand et al , 2012, Wang et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Interspecies spatial association (hereafter called ‘species association’), in which some pairs of species co‐occur at a particular spatial scale more or less frequently than expected by chance, is a key dimension of community spatial structure (Wiegand et al , 2012, Wang et al 2010). Species association is ubiquitous in nature, but processes shaping species association and their relevance to community trait structure are still poorly understood (Velázquez et al ).…”

Section: Introductionmentioning

confidence: 99%

“…Such importance of environmental filtering and competition in structuring plant communities often vary with spatial scale (Wiens , Bartlett et al , Zhang et al ). Environmental filtering, which produces spatially aggregated pattern, is typically important at a larger spatial scale; whereas, competition, which produces spatially segregated pattern, is important at a smaller spatial scale (HilleRisLambers et al 2012, Biswas et al , 2017). Therefore, a high degree of trait similarity of the associated species – which is the signature of environmental filtering – is expected to be associated with positive spatial association (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, higher wood density promotes individual's survival after establishment, while adult stature (i.e. maximum height) promotes individual's survival at late life stages (Visser et al ). In addition, the negative effects of trait similarity between neighboring trees on their growth is often stronger in older than younger trees (Lasky et al ).…”

Section: Introductionmentioning

confidence: 99%

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Negative relationship between interspecies spatial association and trait dissimilarity

Biswas

2018

Oikos

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Species’ response to environmental site conditions and neighborhood interactions are among the important drivers of species’ spatial distributions and the resultant interspecies spatial association. The importance of competition to interspecies spatial association can be inferred from a high degree of trait dissimilarity of the associated species, and vice versa for environmental filtering. However, because the importance of environmental filtering and competition in structuring plant communities often vary with spatial scale and with plant life stage, the species’ spatial association–trait dissimilarity relationship should vary accordingly. We tested these assumptions in a fully mapped 50‐ha subtropical evergreen forest of China, where we assessed the degrees of interspecies spatial associations between adult trees and between saplings at two different spatial scales (10 m versus 40 m) and measured the degrees of trait dissimilarity of the associated species using six traits (leaf area, specific leaf area, leaf dry‐matter content, wood density, wood dry‐matter content and maximum height). Consistent across spatial scales and plant life stages, the degree of interspecies spatial association and the degree of overall trait dissimilarity (i.e. all six traits together) were negatively correlated, suggesting that environmental filtering might help assemble functionally similar species in the forest under study. However, when we looked into the spatial association–trait dissimilarity relationship for individual traits, we found that the relationships between interspecies spatial associations and the dissimilarity of wood density and dry‐matter content were significant for adults but not for saplings, suggesting the importance of wood traits in species’ survival during ontogeny. We conclude that processes shaping interspecies spatial association are spatial scale and plant life stage dependent, and that the distributions of functional traits offer useful insights into the processes underlying community spatial structure.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Negative relationship between interspecies spatial association and trait dissimilarity

Biswas

2018

Oikos

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Size‐dependent variations in individual traits and trait scaling relationships within a shade‐tolerant evergreen tree species

Yan

2018

American J of Botany

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Trait hierarchies are stronger than trait dissimilarities in structuring spatial co‐occurrence patterns of common tree species in a subtropical forest

Yin

Liu

et al. 2021

Ecology and Evolution

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The dissimilarity and hierarchy of trait values that characterize niche and fitness differences, respectively, have been increasingly applied to infer mechanisms driving community assembly and to explain species co‐occurrence patterns. Here, we predict that limiting similarity should result in the spatial segregation of functionally similar species, while functionally similar species will be more likely to co‐occur either due to environmental filtering or due to competitive exclusion of inferior competitors (hereafter hierarchical competition). We used a fully mapped 50‐ha subtropical forest plot in southern China to explore how pairwise spatial associations between saplings and between adult trees were influenced by trait dissimilarity and hierarchy in order to gain insight into assembly mechanisms. We assessed pairwise spatial associations using two summary statistics of spatial point patterns at different spatial scales and compared the effects of trait dissimilarity and trait hierarchy of different functional traits on the interspecific spatial associations. These comparisons allow us to disentangle the effects of limiting similarity, environmental filtering, and hierarchical competition on species co‐occurrence. We found that trait dissimilarity was generally negatively related to interspecific spatial associations for both saplings and adult trees across spatial scales, meaning that species with similar trait values were more likely to co‐occur and thus supporting environmental filtering or hierarchical competition. We further found that trait hierarchy outweighed trait dissimilarity in structuring pairwise spatial associations, suggesting that hierarchical competition played a more important role in structuring our forest community than environmental filtering across life stages. This study employed a novel method, by offering the integration of pairwise spatial association and trait dissimilarity as well as trait hierarchy, to disentangle the relative importance of multiple assembly mechanisms in structuring co‐occurrence patterns, especially the mechanisms of environmental filtering and hierarchical competition, which lead to indistinguishable co‐occurrence patterns. This study also reinforced the importance of trait hierarchy rather than trait dissimilarity in driving neighborhood competition.

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The relationship between trunk- and twigwood density shifts with tree size and species stature

Cited by 22 publications

References 36 publications

Negative relationship between interspecies spatial association and trait dissimilarity

Negative relationship between interspecies spatial association and trait dissimilarity

Size‐dependent variations in individual traits and trait scaling relationships within a shade‐tolerant evergreen tree species

Trait hierarchies are stronger than trait dissimilarities in structuring spatial co‐occurrence patterns of common tree species in a subtropical forest

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