气候变化领域集成服务门户(CCPortal): Role of seed size and relative abundance in conspecific negative distance-dependent seedling mortality for eight tree species in a temperate forest

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DOI	10.1016/j.foreco.2019.117537
	Role of seed size and relative abundance in conspecific negative distance-dependent seedling mortality for eight tree species in a temperate forest
	Seiwa K.; Masaka K.; Konno M.; Iwamoto S.
发表日期	2019
ISSN	0378-1127
卷号	453
英文摘要	Conspecific negative distance dependent seedling mortality and negative density-dependent seedling survival (CNDD) are among the most important mechanisms of species diversity maintenance. Recent research has demonstrated that CNDD is greater for species with abundant seeds, due mainly to attack by density-dependent pathogens. If seed number were correlated negatively with seed size, species with smaller seeds would exhibit much greater negative CNDD. We explored whether CNDD is affected by seed size. We evaluated the strength of CNDD as a log response ratio of the probability of mortality among seedlings at conspecific and heterospecific sites and at high and low densities as functions of distance and density, respectively, in a seed-sowing experiment using eight hardwood species in a temperate forest in northern Japan. As a function of distance, CNDD attributable to pathogens was correlated positively with seed mass at low density, but not at high density, whereas seed mass was not correlated with CNDD attributable to invertebrate or vertebrate herbivores. As a function of density, seed mass was not correlated with CNDD attributable to pathogens or invertebrate or vertebrate herbivores. The ability of large-seeded species to better tolerate CNDD suggests a novel mechanism through which seed size may contribute to CNDD variation and promote species coexistence due to distance-dependent attack by pathogens, particularly those bearing leaf diseases. © 2019 Elsevier B.V.
英文关键词	Janzen–Connell hypothesis; Leaf disease; Pathogen; Relative abundance; Species diversity
语种	英语
scopus关键词	Animals; Biodiversity; Hardwoods; Pathogens; Density dependent; Diversity maintenance; Leaf disease; Recent researches; Relative abundance; Seedling mortality; Seedling survival; Vertebrate herbivores; Forestry; coexistence; conspecific; density dependence; disease; heterogeneity; mortality; pathogen; probability; seed size; seedling; species diversity; survival; temperate forest; Animals; Biodiversity; Distance; Forestry; Hardwoods; High Density; Pathogens; Seeds; Invertebrata; Vertebrata
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155725
作者单位	Graduate School of Agricultural Science, Tohoku University, Naruko-onsen, Osaki, Miyagi 989-6711, Japan; Faculty of Agriculture, Iwate University, Morioka, Iwate 020-8550, Japan; Innovative Drug Research Laboratories, Kyowa Hakko Kirin Co., Ltd., Machida, Tokyo 194-8533, Japan
推荐引用方式 GB/T 7714	Seiwa K.,Masaka K.,Konno M.,et al. Role of seed size and relative abundance in conspecific negative distance-dependent seedling mortality for eight tree species in a temperate forest[J],2019,453.
APA	Seiwa K.,Masaka K.,Konno M.,&Iwamoto S..(2019).Role of seed size and relative abundance in conspecific negative distance-dependent seedling mortality for eight tree species in a temperate forest.Forest Ecology and Management,453.
MLA	Seiwa K.,et al."Role of seed size and relative abundance in conspecific negative distance-dependent seedling mortality for eight tree species in a temperate forest".Forest Ecology and Management 453(2019).