Arid
DOI10.1016/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
ISSN0140-1963
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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