An Unexpected Change in Spatial Pattern Across 10 Years in an Aspen-White Pine Forest

Peterson, Chris J.; Squiers, Edwin R.

doi:10.2307/2261421

Cited by 106 publications

(84 citation statements)

References 54 publications

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“…White pine is a mid-tolerant species that can regenerate itself and grow in understory gaps to achieve canopy recruitment (Wendell andSmith 1990, Peterson andSquiers 1995). Low light levels associated with shaded conditions may limit height and diameter growth (Bormann 1965, Logan 1966, O'Connell and Kelty 1994.…”

Section: Introductionmentioning

confidence: 99%

Juvenile growth and crown morphological plasticity of eastern white pines (Pinus strobus L.) planted along a natural light gradient: Results after six years

Messier¹,

Parent²,

Chengaou³

et al. 1999

The Forestry Chronicle

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Juvenile growth and crown morphological plasticity of eastern white pines (Pinus strobus L.) planted along a natural light gradient: Results after six years by C. ~e s s i e r l , S. parent1, M. chengaoul and J. ~e a u l i e u~Underplanting white pine (Pinus strobus L.) is a promising method La plantation en sous-Ctage de pin blanc (Pinus strobus L.) conto reduce competition and protect against white pine weevil stitue une mCthode prometteuse de reduction de la compCtition et (Pissodes strobi (Peck)) damage. However, shading caused by overde protection contre les dCg5ts du charancon du pin blanc (Pissodes story trees can reduce growth, vigor and survival of white pine. strobi (Peck)). Toutefois, l'ombrage occasionnC par les arbres des The objective of this study was to determine the effects of a light Ctages sup6rieurs rCduit la croissance, la v i g~e~r et la s~i e d~ pin gradient on the growth and overall crown morphology of white blanc. are discussed in light of the results obtained in this study.Aucun changement significatif n'est apparu dans la morphologie de la cime en fonction du gradient d'ensoleillement. Ce manque Key words: Understory growth, white pine, understory planting, de plasticit6 au niveau de la morphologie de la cime conhibue m k mcrown morphology, silvicultural options, light gradient blablement B la capacite du pin blanc de croitre et de survivre dans un environnement de t&s faible lurninosit6. D i h n t e s options sylvicoles sont abord6es en fonction des r6sultat.s obtenus dans cette Ctude.Mots-clb: croissance en sous-Ctage, pin blanc, plantation en sousCtage, morphologie de la cime, options sylvicoles, gradient d'ensoleillement

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Section: Introductionmentioning

confidence: 99%

Juvenile growth and crown morphological plasticity of eastern white pines (Pinus strobus L.) planted along a natural light gradient: Results after six years

Messier¹,

Parent²,

Chengaou³

et al. 1999

The Forestry Chronicle

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“…Similarly, a number of other studies have demonstrated that competition has a significant role in tree mortality in different forests [4,17,18,30], especially in young and even-aged forests. However, other studies using similar analyses failed to detect significant evidence of competition contributing to tree mortality processes [5,15,19], and most suggested that the competitive interactions were not strong enough to result in mortality, but rather, resulted in a reduction in tree size [15]. The importance of competitive mortality processes may also vary with forest development.…”

Section: Competition and Regular Spacingmentioning

confidence: 99%

“…Although a number of studies have found evidence of competition among plants [9][10][11][12][13], its importance in structuring plant spatial patterns remains controversial [5,12,[14][15][16]. Studies of spatial distribution patterns have detected the prevalence of competition among plants, and concluded that competition is a significant contributor to tree mortality [4,17,18]; however, inconsistent results have been observed in some tree species [5,15,19]. When using spatial pattern analysis methods, determining the prevalence of competition in the structuring of plant communities largely depends on the intensity of inter-tree interactions [9,20] and Investigating spatial autocorrelation in tree size is a case of a marked point pattern analysis, which measures spatial patterns of attributes, such as tree species and size, attached to tree locations [38].…”

Section: Introductionmentioning

confidence: 99%

Prevalence of Inter-Tree Competition and Its Role in Shaping the Community Structure of a Natural Mongolian Scots Pine (Pinus sylvestris var. mongolica) Forest

Wang

Park

QianXue

et al. 2017

Forests

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Abstract:Inter-tree competition is considered one of the most important ecological processes of forest development. However, its importance in structuring the spatial patterns of plant communities remains controversial. We collected observational data from two plots in a natural Mongolian Scots pine forest to study the contribution of competition to tree growth, mortality, and size inequality. We used the nearest neighbour method to determine the presence of competition, and unmarked and marked spatial point pattern analyses to test the density-dependent mortality effects and the spatial autocorrelation of tree size. We identified significant positive correlations between tree canopy diameter and nearest neighbour distance in both plots, which were more evident in the denser plot. The pair correlation functions of both plots indicated regular distribution patterns of living trees, and trees living in more crowded environments were more likely to die. However, the mark differentiation characteristics showed weak evidence of a negative spatial autocorrelation in tree size, particularly in the high-density plot. The high mortality rate of suppressed trees and weak asymmetric competition may have accounted for the lack of dissimilarity in tree size. This study showed that inter-tree competition is an important determinant of the development of Mongolian Scots pine forests.

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“…Accordingly, the various summery descriptions introduced for univariate pattern can be extended to cover the multivariate case (Diggle, 1983). However, primarily because of its exceeding complexity, its applications to multiple point patterns have been limited to pairwise interactions among two or three types of points (see Diggle, 1983;Penttinen et al, 1992;Szwagrzyk and Czerwczak, 1993;Moeur, 1993;Peterson and Squiers, 1995;Mateu et al, 1998), which are based on the same ideas as univariate (single point type) models.…”

Section: Pair Correlation Function and Ripley's K-functionmentioning

confidence: 99%

Developing a scientific basis for sustainable management of tropical forest watersheds

Zin¹

2005

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An Unexpected Change in Spatial Pattern Across 10 Years in an Aspen-White Pine Forest

Cited by 106 publications

References 54 publications

Juvenile growth and crown morphological plasticity of eastern white pines (Pinus strobus L.) planted along a natural light gradient: Results after six years

Juvenile growth and crown morphological plasticity of eastern white pines (Pinus strobus L.) planted along a natural light gradient: Results after six years

Prevalence of Inter-Tree Competition and Its Role in Shaping the Community Structure of a Natural Mongolian Scots Pine (Pinus sylvestris var. mongolica) Forest

Developing a scientific basis for sustainable management of tropical forest watersheds

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