Latitudinal patterns in stabilizing density dependence of forest communities

• 成果类型: Article
• 署名作者: Huelsmann, Lisa; Chisholm, Ryan A.; Comita, Liza; Visser, Marco D.; de Souza Leite, Melina; Aguilar, Salomon; Anderson-Teixeira, Kristina J.; Bourg, Norman A.; Brockelman, Warren Y.; Bunyavejchewin, Sarayudh; Castano, Nicolas; Chang-Yang, Chia-Hao; Chuyong, George B.; Clay, Keith; Davies, Stuart J.; Duque, Alvaro; Ediriweera, Sisira; Ewango, Corneille; Gilbert, Gregory S.; Holik, Jan; Howe, Robert W.; Hubbell, Stephen P.; Itoh, Akira; Johnson, Daniel J.; Kenfack, David; Kral, Kamil; Larson, Andrew J.; Lutz, James A.; Makana, Jean-Remy; Malhi, Yadvinder; McMahon, Sean M.; McShea, William J.; Mohamad, Mohizah; Nasardin, Musalmah; Nathalang, Anuttara; Norden, Natalia; Oliveira, Alexandre A.; Parmigiani, Renan; Perez, Rolando; Phillips, Richard P.; Pongpattananurak, Nantachai; Sun, I-Fang; Swanson, Mark E.; Tan, Sylvester; Thomas, Duncan; Thompson, Jill; Uriarte, Maria; Wolf, Amy T.; Yao, Tze Leong; Zimmerman, Jess K.; Zuleta, Daniel; Hartig, Florian
• 署名单位: University of Bayreuth; University of Regensburg; University of Bayreuth; National University of Singapore; Yale University; Smithsonian Institution; Smithsonian Tropical Research Institute; Leiden University; Leiden University - Excl LUMC; Universidade de Sao Paulo; Smithsonian Institution; Smithsonian Tropical Research Institute; Smithsonian Institution; Smithsonian National Zoological Park & Conservation Biology Institute; National Science & Technology Development Agency - Thailand; Mahidol University; Kasetsart University; National Sun Yat Sen University; Tulane University; Smithsonian Institution; Smithsonian Tropical Research Institute; Universidad Nacional de Colombia; Uva Wellassa University; University of Kisangani; University of California System; University of California Santa Cruz; Landscape Research Institute; University of Wisconsin System; University of Wisconsin Green Bay; University of California System; University of California Los Angeles; Osaka Metropolitan University; State University System of Florida; University of Florida; Smithsonian Institution; Smithsonian Tropical Research Institute; University of Montana System; University of Montana; University of Montana System; University of Montana; Utah System of Higher Education; Utah State University; University of Oxford; Smithsonian Institution; Smithsonian Environmental Research Center; Jabatan Hutan Sarawak; Institute Penyelidikan Perhutanan Malaysia; Alliance; International Center for Tropical Agriculture - CIAT; Pennsylvania State System of Higher Education (PASSHE); Indiana University of Pennsylvania; Kasetsart University; National Dong Hwa University; Washington State University; Oregon State University; UK Centre for Ecology & Hydrology (UKCEH); Columbia University; University of Wisconsin System; University of Puerto Rico; University of Puerto Rico Rio Piedras
• 刊物名称: Nature
• ISSN/ISSBN: 0028-6064
• DOI: 10.1038/s41586-024-07118-4
• 发表日期: 2024-03-21
• 页码: 564-+
• 关键词: janzen-connell hypothesis; natural enemies; plant diversity; mortality; survival; distance; coexistence; pathogens; strength; trees

摘要

Numerous studies have shown reduced performance in plants that are surrounded by neighbours of the same species(1,2), a phenomenon known as conspecific negative density dependence (CNDD)(3). A long-held ecological hypothesis posits that CNDD is more pronounced in tropical than in temperate forests(4,5), which increases community stabilization, species coexistence and the diversity of local tree species(6,7). Previous analyses supporting such a latitudinal gradient in CNDD8,9 have suffered from methodological limitations related to the use of static data(10-12). Here we present a comprehensive assessment of latitudinal CNDD patterns using dynamic mortality data to estimate species-site-specific CNDD across 23 sites. Averaged across species, we found that stabilizing CNDD was present at all except one site, but that average stabilizing CNDD was not stronger toward the tropics. However, in tropical tree communities, rare and intermediate abundant species experienced stronger stabilizing CNDD than did common species. This pattern was absent in temperate forests, which suggests that CNDD influences species abundances more strongly in tropical forests than it does in temperate ones(13). We also found that interspecific variation in CNDD, which might attenuate its stabilizing effect on species diversity(14,15), was high but not significantly different across latitudes. Although the consequences of these patterns for latitudinal diversity gradients are difficult to evaluate, we speculate that a more effective regulation of population abundances could translate into greater stabilization of tropical tree communities and thus contribute to the high local diversity of tropical forests.