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  • 1
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    Negative plant-soil feedback predicts tree-species relative abundance in a tropical forest (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-06-29
    Description: The accumulation of species-specific enemies around adults is hypothesized to maintain plant diversity by limiting the recruitment of conspecific seedlings relative to heterospecific seedlings. Although previous studies in forested ecosystems have documented patterns consistent with the process of negative feedback, these studies are unable to address which classes of enemies (for example, pathogens, invertebrates, mammals) exhibit species-specific effects strong enough to generate negative feedback, and whether negative feedback at the level of the individual tree is sufficient to influence community-wide forest composition. Here we use fully reciprocal shade-house and field experiments to test whether the performance of conspecific tree seedlings (relative to heterospecific seedlings) is reduced when grown in the presence of enemies associated with adult trees. Both experiments provide strong evidence for negative plant-soil feedback mediated by soil biota. In contrast, above-ground enemies (mammals, foliar herbivores and foliar pathogens) contributed little to negative feedback observed in the field. In both experiments, we found that tree species that showed stronger negative feedback were less common as adults in the forest community, indicating that susceptibility to soil biota may determine species relative abundance in these tropical forests. Finally, our simulation models confirm that the strength of local negative feedback that we measured is sufficient to produce the observed community-wide patterns in tree-species relative abundance. Our findings indicate that plant-soil feedback is an important mechanism that can maintain species diversity and explain patterns of tree-species relative abundance in tropical forests.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mangan, Scott A -- Schnitzer, Stefan A -- Herre, Edward A -- Mack, Keenan M L -- Valencia, Mariana C -- Sanchez, Evelyn I -- Bever, James D -- R01 GM092660/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Aug 5;466(7307):752-5. doi: 10.1038/nature09273.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, University of Wisconsin-Milwaukee, Wisconsin 53201, USA. smangan37@gmail.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20581819" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; Biomass ; Computer Simulation ; Feedback, Physiological ; Food Chain ; Insects/physiology ; Models, Biological ; Panama ; Population Density ; Seedlings/growth & development ; Soil/*analysis ; *Soil Microbiology ; Species Specificity ; Trees/*classification/*growth & development/microbiology/parasitology ; *Tropical Climate ; Vertebrates/physiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    Functional traits and niche-based tree community assembly in an Amazonian forest (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-10-25
    Description: It is debated whether species-level differences in ecological strategy, which play a key role in much of coexistence theory, are important in structuring highly diverse communities. We examined the co-occurrence patterns of over 1100 tree species in a 25-hectare Amazonian forest plot in relation to field-measured functional traits. Using a null model approach, we show that co-occurring trees are often less ecologically similar than a niche-free (neutral) model predicts. Furthermore, we find evidence for processes that simultaneously drive convergence and divergence in key aspects of plant strategy, suggesting that at least two distinct niche-based processes are occurring. Our results show that strategy differentiation among species contributes to the maintenance of diversity in one of the most diverse tropical forests in the world.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kraft, Nathan J B -- Valencia, Renato -- Ackerly, David D -- New York, N.Y. -- Science. 2008 Oct 24;322(5901):580-2. doi: 10.1126/science.1160662.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Integrative Biology, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18948539" target="_blank"〉PubMed〈/a〉
    Keywords: *Biodiversity ; *Ecosystem ; Ecuador ; Nitrogen/analysis ; Plant Leaves/anatomy & histology/chemistry ; Population Dynamics ; Seeds ; *Trees/anatomy & histology/growth & development/physiology ; *Tropical Climate ; Wood
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    The importance of demographic niches to tree diversity (2006)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2006-06-10
    Description: Most ecological hypotheses about species coexistence hinge on species differences, but quantifying trait differences across species in diverse communities is often unfeasible. We examined the variation of demographic traits using a global tropical forest data set covering 4500 species in 10 large-scale tree inventories. With a hierarchical Bayesian approach, we quantified the distribution of mortality and growth rates of all tree species at each site. This allowed us to test the prediction that demographic differences facilitate species richness, as suggested by the theory that a tradeoff between high growth and high survival allows species to coexist. Contrary to the prediction, the most diverse forests had the least demographic variation. Although demographic differences may foster coexistence, they do not explain any of the 16-fold variation in tree species richness observed across the tropics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Condit, Richard -- Ashton, Peter -- Bunyavejchewin, Sarayudh -- Dattaraja, H S -- Davies, Stuart -- Esufali, Shameema -- Ewango, Corneille -- Foster, Robin -- Gunatilleke, I A U N -- Gunatilleke, C V S -- Hall, Pamela -- Harms, Kyle E -- Hart, Terese -- Hernandez, Consuelo -- Hubbell, Stephen -- Itoh, Akira -- Kiratiprayoon, Somboon -- Lafrankie, James -- de Lao, Suzanne Loo -- Makana, Jean-Remy -- Noor, Md Nur Supardi -- Kassim, Abdul Rahman -- Russo, Sabrina -- Sukumar, Raman -- Samper, Cristian -- Suresh, Hebbalalu S -- Tan, Sylvester -- Thomas, Sean -- Valencia, Renato -- Vallejo, Martha -- Villa, Gorky -- Zillio, Tommaso -- New York, N.Y. -- Science. 2006 Jul 7;313(5783):98-101. Epub 2006 Jun 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Center for Ecological Analysis and Synthesis, 735 State Street, Santa Barbara, CA 93101, USA. condit@ctfs.si.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16763113" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Americas ; Asia ; Bayes Theorem ; *Biodiversity ; *Ecosystem ; Environment ; India ; Models, Statistical ; Normal Distribution ; Seasons ; *Trees/growth & development ; Weather
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Plant species richness and ecosystem multifunctionality in global drylands (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-01-17
    Description: Experiments suggest that biodiversity enhances the ability of ecosystems to maintain multiple functions, such as carbon storage, productivity, and the buildup of nutrient pools (multifunctionality). However, the relationship between biodiversity and multifunctionality has never been assessed globally in natural ecosystems. We report here on a global empirical study relating plant species richness and abiotic factors to multifunctionality in drylands, which collectively cover 41% of Earth's land surface and support over 38% of the human population. Multifunctionality was positively and significantly related to species richness. The best-fitting models accounted for over 55% of the variation in multifunctionality and always included species richness as a predictor variable. Our results suggest that the preservation of plant biodiversity is crucial to buffer negative effects of climate change and desertification in drylands.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3558739/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3558739/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maestre, Fernando T -- Quero, Jose L -- Gotelli, Nicholas J -- Escudero, Adrian -- Ochoa, Victoria -- Delgado-Baquerizo, Manuel -- Garcia-Gomez, Miguel -- Bowker, Matthew A -- Soliveres, Santiago -- Escolar, Cristina -- Garcia-Palacios, Pablo -- Berdugo, Miguel -- Valencia, Enrique -- Gozalo, Beatriz -- Gallardo, Antonio -- Aguilera, Lorgio -- Arredondo, Tulio -- Blones, Julio -- Boeken, Bertrand -- Bran, Donaldo -- Conceicao, Abel A -- Cabrera, Omar -- Chaieb, Mohamed -- Derak, McHich -- Eldridge, David J -- Espinosa, Carlos I -- Florentino, Adriana -- Gaitan, Juan -- Gatica, M Gabriel -- Ghiloufi, Wahida -- Gomez-Gonzalez, Susana -- Gutierrez, Julio R -- Hernandez, Rosa M -- Huang, Xuewen -- Huber-Sannwald, Elisabeth -- Jankju, Mohammad -- Miriti, Maria -- Monerris, Jorge -- Mau, Rebecca L -- Morici, Ernesto -- Naseri, Kamal -- Ospina, Abelardo -- Polo, Vicente -- Prina, Anibal -- Pucheta, Eduardo -- Ramirez-Collantes, David A -- Romao, Roberto -- Tighe, Matthew -- Torres-Diaz, Cristian -- Val, James -- Veiga, Jose P -- Wang, Deli -- Zaady, Eli -- 242658/European Research Council/International -- New York, N.Y. -- Science. 2012 Jan 13;335(6065):214-8. doi: 10.1126/science.1215442.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Area de Biodiversidad y Conservacion, Departamento de Biologia y Geologia, Escuela Superior de Ciencias Experimentales y Tecnologia, Universidad Rey Juan Carlos, Calle Tulipan Sin Numero, 28933 Mostoles, Spain. fernando.maestre@urjc.es〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22246775" target="_blank"〉PubMed〈/a〉
    Keywords: *Biodiversity ; *Climate ; Climate Change ; Conservation of Natural Resources ; *Ecosystem ; Geography ; Geological Phenomena ; Models, Statistical ; *Plants ; Regression Analysis ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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