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Trade-offs between the metabolic rate and population density of plants.

التفاصيل البيبلوغرافية
العنوان: Trade-offs between the metabolic rate and population density of plants.
المؤلفون: Jian-Ming Deng, Tao Li, Gen-Xuan Wang, Jing Liu, Ze-Long Yu, Chang-Ming Zhao, Ming-Fei Ji, Qiang Zhang, Jian-Quan Liu
المصدر: PLoS ONE, Vol 3, Iss 3, p e1799 (2008)
بيانات النشر: Public Library of Science (PLoS), 2008.
سنة النشر: 2008
المجموعة: LCC:Medicine
LCC:Science
مصطلحات موضوعية: Medicine, Science
الوصف: The energetic equivalence rule, which is based on a combination of metabolic theory and the self-thinning rule, is one of the fundamental laws of nature. However, there is a progressively increasing body of evidence that scaling relationships of metabolic rate vs. body mass and population density vs. body mass are variable and deviate from their respective theoretical values of 3/4 and -3/4 or -2/3. These findings questioned the previous hypotheses of energetic equivalence rule in plants. Here we examined the allometric relationships between photosynthetic mass (M(p)) or leaf mass (M(L)) vs. body mass (beta); population density vs. body mass (delta); and leaf mass vs. population density, for desert shrubs, trees, and herbaceous plants, respectively. As expected, the allometric relationships for both photosynthetic mass (i.e. metabolic rate) and population density varied with the environmental conditions. However, the ratio between the two exponents was -1 (i.e. beta/delta = -1) and followed the trade-off principle when local resources were limited. Our results demonstrate for the first time that the energetic equivalence rule of plants is based on trade-offs between the variable metabolic rate and population density rather than their constant allometric exponents.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1932-6203
87014742
Relation: http://europepmc.org/articles/PMC2265546?pdf=render; https://doaj.org/toc/1932-6203
DOI: 10.1371/journal.pone.0001799
URL الوصول: https://doaj.org/article/870147422da34e599ef393692fa4eb7e
رقم الأكسشن: edsdoj.870147422da34e599ef393692fa4eb7e
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:19326203
87014742
DOI:10.1371/journal.pone.0001799