An analytical model of stand dynamics as a function of tree growth, mortality and recruitment: The shade tolerance-stand structure hypothesis revisited

Zavala, Miguel Á.; Angulo, Óscar; Parra, Rafael; López-Marcos, J.C.

doi:10.1016/j.jtbi.2006.08.024

Cited by 47 publications

(33 citation statements)

References 62 publications

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“…They may also contribute to understand species coexistence under future climatic conditions and might help to develop forestry policies and management guidelines for forest biodiversity preservation under climate change. Advances in analytical forest models (Kohyama, 1994;Zavala et al, 2007) suggest that ecological macroscopic processes such as stand structure and composition can be successfully described as a function of species-level information. Parameterization of species-specific models for growth, survival and recruitment are the first step towards the development of process-based models of forest dynamics that link whole-plant responses to patterns of community organization (Kohyama, 1994).…”

Section: Implications For Forest Management and For Modelling Communimentioning

confidence: 99%

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Rank reversals in tree growth along tree size, competition and climatic gradients for four forest canopy dominant species in Central Spain

et al. 2008

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-• Interspecific differences in tree growth patterns with respect to biotic and abiotic factors are key for understanding forest structure and dynamics, and predicting potential changes under climate change.• Repeated observations from the Spanish Forest Inventory (SFI) were used to parameterize maximum likelihood estimators of tree growth as a function of tree size, competition indices and climate for Pinus pinaster, P. sylvestris, Quercus ilex and Q. pyrenaica.• Significant responses to both biotic and abiotic factors were found, with interspecific differences in species performance along competition, temperature and precipitation gradients. Q. ilex was the species most tolerant to competition while P. pinaster was the species most sensitive to climatic variation. Species relative positions shifted along gradients of these factors with rank reversals in species performance along size, competition and climatic gradients.• The results based on average growth matched previous forestry classifications and experimental studies on relative growth rate (RGR).• When examining growth along studied abiotic and biotic gradients, a mismatch was found between species performance ranks as predicted by our models and information derived from previous knowledge. Those discrepancies highlight the relevance of ontogeny and environmental heterogeneity in defining species performance along competition gradients. niche differentiation / Pinus pinaster / Pinus sylvestris / Quercus ilex / Quercus pyrenaica Résumé -Interversion de rangs dans la croissance des arbres en relation avec la taille de l'arbre, la compétition et les gradients climatiques pour quatre espèces forestières dominantes dans la canopée.• Les différences interspécifiques dans les modèles de croissance des arbres, pour ce qui concerne les facteurs biotiques et abiotiques, sont des clés pour la compréhension des structures et des dynamiques forestières, et pour prédire les changement potentiels avec le changement climatique.• Des observations répétées de l'Inventaire Forestier Espagnol (SFI) ont été utilisées pour paramétrer les estimateurs de probabilité maximum de croissance des arbres comme une fonction de la taille de l'arbre, des indices de compétition et du climat pour Pinus pinaster, Pinus sylvestris, Quercus ilex et Quercus pyrenaica.• Des réponses significatives aux facteurs biotiques et abiotiques ont été trouvées, avec des différences interspécifiques pour les performances des espèces en relation avec la compétition, les gradients de température et de précipitations. Quercus ilex a été l'espèce la plus tolérante à la compétition tandis que Pinus pinaster a été l'espèce la plus sensible aux variations climatiques. Les positions relatives des espèces ont changé en relation avec les gradients de ces facteurs avec des interversions de rang pour les performances des espèces en relation avec la taille, la compétition et les gradients climatiques.• Les résultats basés sur la moyenne de croissance sont en adéquation avec la classification forestière antér...

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Section: Implications For Forest Management and For Modelling Communimentioning

confidence: 99%

“…In the current context this approach is preferred over whole stand models because it allows describing the behavior of the stand or the community in terms of individual tree performance which is useful both from a theoretical (e.g. Levin, 1992;Zavala et al, 2007) and an applied perspective (Pukkala and Kolström, 1988).…”

Section: Introductionmentioning

confidence: 99%

Rank reversals in tree growth along tree size, competition and climatic gradients for four forest canopy dominant species in Central Spain

et al. 2008

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“…Despite their functional differences, both species often form mixed stands that are widely distributed in the Eastern Iberian Peninsula. In this context, understanding interactions among individuals in pine-oak mixed stands is crucial not only to interpret current species distribution, but also to foresee future vegetation scenarios (Zavala et al, 2007).…”

Section: Study Areamentioning

confidence: 99%

“…A considerable number of studies have shown how inter-and intra-specific competition affects individual growth and stand dynamics under water-limited conditions (Gracia et al, 1996;Moreno-Gutiérrez et al, 2011;Zavala et al, 2007). However, although soil water availability and water uptake patterns are likely to play a major role in shaping the composition of mixed-species stands, information on the use of water resources at inter-and intra-specific levels is still limited (Filella & Peñuelas, 2003a;Moreira et al, 2003;Brooks et al, 2006).…”

Section: Study Areamentioning

confidence: 99%

Point processes statistics of stable isotopes: analysing water uptake patterns in a mixed stand of Aleppo pine and Holm oak

Comas¹,

Castillo²,

Voltas³

et al. 2015

For. syst.

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Aim of study: Understanding inter- and intra-specific competition for water is crucial in drought-prone environments. However, little is known about the spatial interdependencies for water uptake among individuals in mixed stands. The aim of this work was to compare water uptake patterns during a drought episode in two common Mediterranean tree species, Quercus ilex L. and Pinus halepensis Mill., using the isotope composition of xylem water (δ18O, δ2H) as hydrological marker.Area of study: The study was performed in a mixed stand, sampling a total of 33 oaks and 78 pines (plot area= 888 m2). We tested the hypothesis that both species uptake water differentially along the soil profile, thus showing different levels of tree-to-tree interdependency, depending on whether neighbouring trees belong to one species or the other.Material and Methods: We used pair-correlation functions to study intra-specific point-tree configurations and the bivariate pair correlation function to analyse the inter-specific spatial configuration. Moreover, the isotopic composition of xylem water was analysed as a mark point pattern.Main results: Values for Q. ilex (δ18O= -5.3 ±0.2‰, δ2H=-54.3±0.7‰) were significantly lower than for P. halepensis (δ18O= -1.2±0.2‰, δ2H = -25.1±0.8‰), pointing to a greater contribution of deeper soil layers for water uptake by Q. ilex. Research highlights: Point-process analyses revealed spatial intra-specific dependencies among neighbouring pines, showing neither oak-oak nor oak-pine interactions. This supports niche segregation for water uptake between the two species.Key words: Cross-pair correlation function; Deuterium; Mark correlation function; Oxygen-18; Point patterns; Xylem.Abbreviations: d18O, oxygen isotope composition; d2H, hydrogen isotope composition; BA, basal area.

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“…The modern scientists pay attention to the same method [8][9][10][11][12]. The use of this method at studying the species of polycentric biomorph is impossible because of intensive vegetative reproduction of these plants by the plagiotropic system of sprouts.…”

Section: Analysis Of Literature Data and The Statement Of The Problemmentioning

confidence: 99%

Analysis of the living state of cenopopulation of polycentric biomorph poa angustifolia l.

Кузнецова

2015

ScienceRise

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Гайда Галина Зуфарівна, кандидат хімічних наук, старший науковий співробітник, Відділ аналітичної біотехнології, старший науковий співробітник, Інститут біології клітини НАН України, вул. Драгомано-ва, 14/16, м. Львів, Україна, 79005 Е-mail: galina.gayda@gmail IntroductionThe revelation of indicative signs and methods that allow define the vitality of vegetable population and make the prognosis of its development and so of the whole phytocenosis was always an important task of ecology.Morphologic structure of the plant is a united system of interconnected organs and its elements. The study of internal connections between the separate organs is important for solving many theoretical and practical problems of ecology and phytocenology [1]. Internal connections in biological objects can define the degree of its correspondence to the concrete ecotope and the living state of organisms [2]. The prevalence of the high positive connections among the functionally important signs demonstrates the certain coordination in morphogenesis, in functioning and development of individuals, the fitness to ecotope conditions; its lack can indicate the disintegrative processes and be an early diagnostic signal of destructive phenomena [3]. Analysis of literature data and the statement of the problemAmong the methods of defenition of the living state of cenopopulations the scientists of the previous century often used an analysis of aged groups [4][5][6][7]. The modern scientists pay attention to the same method [8-Біологічні науки Scientific Journal «ScienceRise» №8/1(13)201512 12]. The use of this method at studying the species of polycentric biomorph is impossible because of intensive vegetative reproduction of these plants by the plagiotropic system of sprouts. At the same time the one individual divides in several clones -independent organisms at the certain distance from each other. In thick grass such plants can sprout in ecotope of other individuals forming an extremely complicated interlacement. In these circumstances it is very difficult to separate the concrete organisms in vegetable group in most cases it is impossible especially in number that is necessary for reliable statistical analysis.That is why at studying vegetatively movable plants the main elementary and count unit is partial bush or sprout but not an individual [13][14][15]. The study of sprouts in such cenopopulations was often used especially for study of dynamics of grass density and its reaction on agrotechnical arrangements. It was not used for an analysis of the living state. At least such information is absent in literature that we used. There are many important signs that characterize vegetative sprout of cereals: the height of sprout, its length, the width of laminas and other but there was not observed the one the most influential sign. Aim and problems of researchConsidering the aforesaid the revelation of diagnostic and prognostic indicators of the living state of plagiotropic plants on example of vegetative sprouts of the bunch cereal Poa angusti...

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An analytical model of stand dynamics as a function of tree growth, mortality and recruitment: The shade tolerance-stand structure hypothesis revisited

Cited by 47 publications

References 62 publications

Rank reversals in tree growth along tree size, competition and climatic gradients for four forest canopy dominant species in Central Spain

Rank reversals in tree growth along tree size, competition and climatic gradients for four forest canopy dominant species in Central Spain

Point processes statistics of stable isotopes: analysing water uptake patterns in a mixed stand of Aleppo pine and Holm oak

Analysis of the living state of cenopopulation of polycentric biomorph poa angustifolia l.

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