Is Variation in Conspecific Negative Density Dependence Driving Tree Diversity Patterns at Large Scales?

Huelsmann, Lisa and Chisholm, Ryan A. and Hartig, Florian (2021) Is Variation in Conspecific Negative Density Dependence Driving Tree Diversity Patterns at Large Scales? TRENDS IN ECOLOGY & EVOLUTION, 36 (2). pp. 151-163. ISSN 0169-5347, 1872-8383

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Abstract

Half a century ago, Janzen and Connell hypothesized that the high tree species diversity in tropical forests is maintained by specialized natural enemies. Along with other mechanisms, these can cause conspecific negative density dependence (CNDD) and thus maintain species diversity. Numerous studies have measured proxies of CNDD worldwide, but doubt about its relative importance remains. We find ample evidence for CNDD in local populations, but methodological limitations make it difficult to assess if CNDD scales up to control community diversity and thereby local and global biodiversity patterns. A combination of more robust statistical methods, new study designs, and eco-evolutionary models are needed to provide a more definite evaluation of the importance of CNDD for geographic variation in plant species diversity.

Item Type: Article
Uncontrolled Keywords: JANZEN-CONNELL HYPOTHESIS; TROPICAL RAIN-FOREST; SEEDLING MORTALITY; NATURAL ENEMIES; SPECIES COEXISTENCE; SPATIAL-PATTERNS; PLANT DIVERSITY; FREQUENCY-DEPENDENCE; COMMUNITY ECOLOGY; SPACING DYNAMICS
Subjects: 500 Science > 570 Life sciences
500 Science > 580 Botanical sciences
Divisions: Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Group Theoretical Ecology (Prof. Dr. Florian Hartig)
Depositing User: Petra Gürster
Date Deposited: 21 Dec 2022 10:03
Last Modified: 21 Dec 2022 10:03
URI: https://pred.uni-regensburg.de/id/eprint/46435

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