RothmanChapmanStruhsakerEtAl2015

Référence

Rothman, J.M., Chapman, C.A., Struhsaker, T.T., Raubenheimer, D., Twinomugisha, D., Waterman, P.G. (2015) Long-term declines in nutritional quality of tropical leaves. Ecology, 96(3):873-878. (Scopus )

Résumé

Global change is affecting plant and animal populations and many of the changes are likely subtle and difficult to detect. Based on greenhouse experiments, changes in temperature and rainfall, along with elevated CO<inf>2</inf>, are expected to impact the nutritional quality of leaves. Here, we show a decline in the quality of tree leaves 15 and 30 years after two previous studies in an undisturbed area of tropical forest in Kibale National Park, Uganda. After 30 years in a sample of multiple individuals of ten tree species, the mature leaves of all but one species increased in fiber concentrations, with a mean increase of 10%; tagged individuals of one species increased 13% in fiber. After 15 years, in eight tree species the fiber of young leaves increased 15%, and protein decreased 6%. Like many folivores, Kibale colobus monkeys select leaves with a high protein-to-fiber ratio, so for these folivores declining leaf quality could have a major impact. Comparisons among African and Asian forests show a strong correlation between colobine biomass and the protein-to-fiber ratio of the mature leaves from common tree species. Although this model, predicts a 31% decline in monkey abundance for Kibale, we have not yet seen these declines. © 2015 by the Ecological Society of America.

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@ARTICLE { RothmanChapmanStruhsakerEtAl2015,
    AUTHOR = { Rothman, J.M. and Chapman, C.A. and Struhsaker, T.T. and Raubenheimer, D. and Twinomugisha, D. and Waterman, P.G. },
    TITLE = { Long-term declines in nutritional quality of tropical leaves },
    JOURNAL = { Ecology },
    YEAR = { 2015 },
    VOLUME = { 96 },
    PAGES = { 873-878 },
    NUMBER = { 3 },
    NOTE = { cited By 0 },
    ABSTRACT = { Global change is affecting plant and animal populations and many of the changes are likely subtle and difficult to detect. Based on greenhouse experiments, changes in temperature and rainfall, along with elevated CO<inf>2</inf>, are expected to impact the nutritional quality of leaves. Here, we show a decline in the quality of tree leaves 15 and 30 years after two previous studies in an undisturbed area of tropical forest in Kibale National Park, Uganda. After 30 years in a sample of multiple individuals of ten tree species, the mature leaves of all but one species increased in fiber concentrations, with a mean increase of 10%; tagged individuals of one species increased 13% in fiber. After 15 years, in eight tree species the fiber of young leaves increased 15%, and protein decreased 6%. Like many folivores, Kibale colobus monkeys select leaves with a high protein-to-fiber ratio, so for these folivores declining leaf quality could have a major impact. Comparisons among African and Asian forests show a strong correlation between colobine biomass and the protein-to-fiber ratio of the mature leaves from common tree species. Although this model, predicts a 31% decline in monkey abundance for Kibale, we have not yet seen these declines. © 2015 by the Ecological Society of America. },
    AUTHOR_KEYWORDS = { Climate change; Folivores; Global warming; Leaf chemistry; Nutritional ecology; Primates; Tropical foliage },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1890/14-0391.1 },
    KEYWORDS = { abundance; biomass; correlation; environmental effect; leaf; maturation; nutritional status; primate; tree; tropical forest, Kibale National Park; Uganda; Uganda, Animalia; Colobus sp.; Primates },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84929658214&partnerID=40&md5=ab267f983f356a7ee9d4c5bf83ddd17e },
}

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