干旱区生态环境知识资源中心(Arid): Relationships between soil seed bank composition and standing vegetation along chronosequences in a tropical dry forest in north-eastern Brazil

Arid

DOI	10.1017/S0266467419000130
	Relationships between soil seed bank composition and standing vegetation along chronosequences in a tropical dry forest in north-eastern Brazil
	Gomes, Fernanda Melo 1; de Oliveira, Clemir Candela 1; Miranda, Roberta da Rocha 1; da Costa, Rafael Carvalho 2; Bezerra Loiola, Maria Iracema 2
通讯作者	Gomes, Fernanda Melo
来源期刊	JOURNAL OF TROPICAL ECOLOGY
ISSN	0266-4674
EISSN	1469-7831
出版年	2019
卷号	35 期号:4 页码:173-184
英文摘要	To better understand the role of seed banks in ecological succession of dry forests, we compared similarities between vegetation and seed banks and assessed the relative contributions of seed dispersal and persistence in chronosequences in the Brazilian semi-arid region. To sample the standing vegetation and the seed bank, we collected data in three sites with three successional ages in each one (5 y, 25 y and 45 y). A total of 180 soil samples (three sites x three successional ages x 10 plots x two components) were collected. The composition of the seed bank was assessed by the seedling emergence method. Of 166 species identified in the standing vegetation, only 50 (30.1%) were also present in the seed bank, resulting in low similarity (Jaccard index = 0.02-0.21) and reflecting the rarity of woody species and the dominance of annuals (71% of richness). The relative importance of seed persistence and seed dispersal to seed banks composition were balanced in most cases (difference was not rejected in four out six comparisons). Those results suggest that seed banks in tropical dry forests are largely the result of high dispersal rates and the persistence of allochthonous annual species that contribute to decoupling seed bank and vegetation composition.
英文关键词	Annual species dispersal null model secondary succession seed persistence seedling emergence semi-arid similarity
类型	Article
语种	英语
国家	Brazil
收录类别	SCI-E
WOS记录号	WOS:000471023500004
WOS关键词	DIVERSITY ; EMERGENCE ; CAATINGA ; HISTORY ; DEPTH
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217400
作者单位	1.Univ Fed Ceara, Dept Biol, Postgrad Program Ecol & Nat Resources, Campus Pici, BR-60440900 Fortaleza, Ceara, Brazil; 2.Univ Fed Ceara, Ctr Sci, Dept Biol, Campus Pici Prisco Bezerra, BR-60440900 Fortaleza, Ceara, Brazil
推荐引用方式 GB/T 7714	Gomes, Fernanda Melo,de Oliveira, Clemir Candela,Miranda, Roberta da Rocha,et al. Relationships between soil seed bank composition and standing vegetation along chronosequences in a tropical dry forest in north-eastern Brazil[J],2019,35(4):173-184.
APA	Gomes, Fernanda Melo,de Oliveira, Clemir Candela,Miranda, Roberta da Rocha,da Costa, Rafael Carvalho,&Bezerra Loiola, Maria Iracema.(2019).Relationships between soil seed bank composition and standing vegetation along chronosequences in a tropical dry forest in north-eastern Brazil.JOURNAL OF TROPICAL ECOLOGY,35(4),173-184.
MLA	Gomes, Fernanda Melo,et al."Relationships between soil seed bank composition and standing vegetation along chronosequences in a tropical dry forest in north-eastern Brazil".JOURNAL OF TROPICAL ECOLOGY 35.4(2019):173-184.