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On the use of observational data in studying biodiversity-productivity relationships in forests. (English)
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- Author(s): Xiuli Chu; Hua Yang; Yong Jiang; Rongzhou Man
- Source:
Forestry Chronicle; May2019, Vol. 95 Issue 1, p24-28, 5p - Source:
- Additional Information
- Abstract: The biodiversity-productivity relationship is one of the focus areas in ecological research that is studied primarily through mixed species experiments. Recent efforts in forests, however, increasingly involve the use of observational data, due to the difficulty in establishing long-term, multispecies plantations. Caution is warranted in the observational databased causal relationships between biodiversity and productivity due to the potential confounding effects by environmental variations. In this article, we use a recent forest example to demonstrate how erroneous results could be generated in studying biodiversity-forest productivity relationships when species diversity is highly correlated with environmental variables (multicollinearity). In forestry, erroneous biodiversity-productivity relationships can mislead future research, industry decisions, and policy development. Forest researchers and managers should be aware of the issues associated with collinear data and validate research results with literature reports and professional knowledge. Options to deal with observational data are discussed. [ABSTRACT FROM AUTHOR]
- Abstract: La relation biodiversité-productivité est l'un des domaines où la recherche écologique se fait principalement sur la base d'expérimentations dans des peuplements mélangés. Cependant, les travaux de recherche récents en forêt reposent de plus en plus l'utilisation de données d'observation, en raison de la difficulté d'établir des plantations mixtes sur des horizons assez longs. On doit donc faire preuve de grande prudence lorsqu'on utilise des données d'observation pour établir des relations de causalité entre la biodiversité et la productivité en raison du risque de confusion que peut induire la variabilité environnementale. Cet article s'appuie sur un exemple récent en milieu forestier pour démontrer comment il est possible d'en arriver à des résultats erronés dans l'étude des relations entre la biodiversité et la productivité de la forêt lorsque la diversité des espèces est fortement corrélée à des variables environnementales (multicolinéarité). En foresterie, les relations biodiversité-productivité erronées peuvent être la source d'erreurs dans de futures recherches, dans les décisions de l'industrie et pour l'élaboration des politiques. Les chercheurs et les gestionnaires forestiers doivent être conscients des problèmes associés aux données colinéaires et confronter les résultats des recherches à d'autres rapports scientifiques et au savoir professionnel. Cet article analyse diverses options pour l'utilisation des données d'observation. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Forestry Chronicle is the property of Canadian Institute of Forestry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Abstract:
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