GravelCanhamBeaudetEtAl2010

Référence

Gravel, D., Canham, C. D., Beaudet, M., Messier, C. (2010) Shade tolerance, canopy gaps and mechanisms of coexistence of forest trees. Oikos, 119(3):475-484. (URL )

Résumé

The belief that canopy gaps are important for the maintenance of tree species diversity appears to be widespread, but there have been no formal theoretical models to assess under what conditions gap phase processes allow coexistence. Much of the empirical research on niche differentiation in response to gaps has focused on evidence for an interspecific tradeoff between low light survival and high light growth. The objectives of this study are first to distinguish the possible mechanisms allowing coexistence based on this tradeoff, and second, to explore their limitations. We present a theory of forest dynamics driven by small-scale disturbances as a special case of the theory of coexistence in variable environments. We demonstrate that temporal and spatial heterogeneity in light conditions that results from canopy gaps can allow stable coexistence as a result of three previously documented general mechanisms: ‘relative non-linearity’, ‘the successional niche’ and the ‘storage effect’. We find that temporal fluctuations in light availability alone allow the stable coexistence of only two species. Spatial variation in disturbance synchronicity and intensity allows three species to coexist in a narrow parameter space. The rate of extinction is, however, extremely slow and there is transient coexistence of a larger number of species for a long period of time. We conclude that while the low light survival/high light growth tradeoff may be ubiquitous in forest tree species, it is unlikely to function as an important mechanism for the stable coexistence of several tree species.

Format EndNote

Vous pouvez importer cette référence dans EndNote.

Format BibTeX-CSV

Vous pouvez importer cette référence en format BibTeX-CSV.

Format BibTeX

Vous pouvez copier l'entrée BibTeX de cette référence ci-bas, ou l'importer directement dans un logiciel tel que JabRef .

@ARTICLE { GravelCanhamBeaudetEtAl2010,
    AUTHOR = { Gravel, D. and Canham, C. D. and Beaudet, M. and Messier, C. },
    TITLE = { Shade tolerance, canopy gaps and mechanisms of coexistence of forest trees },
    JOURNAL = { Oikos },
    YEAR = { 2010 },
    VOLUME = { 119 },
    PAGES = { 475-484 },
    NUMBER = { 3 },
    ABSTRACT = { The belief that canopy gaps are important for the maintenance of tree species diversity appears to be widespread, but there have been no formal theoretical models to assess under what conditions gap phase processes allow coexistence. Much of the empirical research on niche differentiation in response to gaps has focused on evidence for an interspecific tradeoff between low light survival and high light growth. The objectives of this study are first to distinguish the possible mechanisms allowing coexistence based on this tradeoff, and second, to explore their limitations. We present a theory of forest dynamics driven by small-scale disturbances as a special case of the theory of coexistence in variable environments. We demonstrate that temporal and spatial heterogeneity in light conditions that results from canopy gaps can allow stable coexistence as a result of three previously documented general mechanisms: ‘relative non-linearity’, ‘the successional niche’ and the ‘storage effect’. We find that temporal fluctuations in light availability alone allow the stable coexistence of only two species. Spatial variation in disturbance synchronicity and intensity allows three species to coexist in a narrow parameter space. The rate of extinction is, however, extremely slow and there is transient coexistence of a larger number of species for a long period of time. We conclude that while the low light survival/high light growth tradeoff may be ubiquitous in forest tree species, it is unlikely to function as an important mechanism for the stable coexistence of several tree species. },
    ISSN = { 1600-0706 },
    OWNER = { Luc },
    PUBLISHER = { Blackwell Publishing Ltd },
    TIMESTAMP = { 2010.10.01 },
    URL = { http://dx.doi.org/10.1111/j.1600-0706.2009.17441.x },
}

********************************************************** *************************** FRQNT ************************ **********************************************************

Le CEF est un
regroupement stratégique du

********************************************************** *********************** Infolettre *********************** **********************************************************

Abonnez-vous à
l'Infolettre du CEF!

**********************************************************

***************** Formations et Écoles d'été ****************** **********************************************************

Formations et Écoles d'été

Analyse des pistes et modélisation par équations structurelles pour écologistes 
2 au 6 mai 2022, Sherbrooke

********************************************************** ***************** Pub - Colloque du CEF ****************** **********************************************************

********************************************************** ***************** Pub - NADEF 2022 ****************** **********************************************************

15 au 25 Juin à la FERLD

**********************************************************

***************** Pub - Symphonies_Boreales ****************** **********************************************************

********************************************************** ***************** Boîte à trucs *************** **********************************************************

CEF-Référence
La référence vedette !

  • Voici une liste (clairement incomplète) des packages R axés sur l'écologie! N'hésitez pas à ajouter à la liste

Voir les autres...