Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2010.05.006 |
Resource partitioning and interactions enable coexistence in a grass-shrub steppe | |
Cipriotti, P. A.1; Aguiar, M. R.2 | |
通讯作者 | Cipriotti, P. A. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
出版年 | 2010 |
卷号 | 74期号:10页码:1111-1120 |
英文摘要 | We revisited a growth-form removal experiment after 12 years with the aim to compare the long-term population responses of three shrub species. Specifically, we were interested to know if the resource partitioning and plant interactions act as complementary mechanisms of the shrub-grass coexistence. In 1983 different plots from grass-shrub Patagonian steppes were submitted to three treatments: control, grass-, and shrub-removal during three consecutive years. In 1997 we studied nine plots from the original experiment and recorded all shrubs to compare shrub density, population size structure, vitality, spatial patterns and neighbourhood interferences of three native and co-dominant shrub species: Mulinum spinosum, Senecio filaginoides, and Adesmia volckmanni. After 12 years of recovery, shrubs as a growth-form group, fully re-established in plots where they were removed and attained 75% higher density in grass-removal plots than in control plots. However, long-term population responses of Mulinum, Senecio, and Adesmia to removals were distinctive. On the other hand, negative and positive interferences among shrub species and between shrubs and grasses generated a complex network. Morphological and functional differences in shrub and grass species and their interactions at population level and long-term could be a key to achieve a better comprehension of shrub-grass coexistence from semi-arid ecosystems. (C) 2010 Elsevier Ltd. All rights reserved. |
英文关键词 | Biotic interactions Competition Facilitation Neighbourhood analyses Niche separation Patagonian steppes Removal experiments Spatial pattern analyses Walter hypothesis |
类型 | Article |
语种 | 英语 |
国家 | Argentina |
收录类别 | SCI-E |
WOS记录号 | WOS:000280976700001 |
WOS关键词 | 2 PATAGONIAN SHRUBS ; CHIHUAHUAN DESERT ; PATTERN-ANALYSIS ; AFRICAN SAVANNA ; HERBACEOUS VEGETATION ; RETAMA-SPHAEROCARPA ; SEMIARID GRASSLANDS ; AUSTRALIAN SAVANNA ; LEGUMINOUS SHRUB ; PATCH STRUCTURE |
WOS类目 | Ecology ; Environmental Sciences |
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/2XILL650/164961 |
作者单位 | 1.Univ Buenos Aires, Fac Agron, Dept Metodos Cuantitat & Sistemas Informac, Catedra Metodos Cuantitat Aplicados, Buenos Aires, DF, Argentina; 2.Univ Buenos Aires CONICET, Catedra Ecol IFEVA, Dept Recursos Nat & Ambiente, Fac Agron, Buenos Aires, DF, Argentina |
推荐引用方式 GB/T 7714 | Cipriotti, P. A.,Aguiar, M. R.. Resource partitioning and interactions enable coexistence in a grass-shrub steppe[J],2010,74(10):1111-1120. |
APA | Cipriotti, P. A.,&Aguiar, M. R..(2010).Resource partitioning and interactions enable coexistence in a grass-shrub steppe.JOURNAL OF ARID ENVIRONMENTS,74(10),1111-1120. |
MLA | Cipriotti, P. A.,et al."Resource partitioning and interactions enable coexistence in a grass-shrub steppe".JOURNAL OF ARID ENVIRONMENTS 74.10(2010):1111-1120. |
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