Arid
DOI10.1111/j.1365-2656.2008.01450.x
Dominant ants can control assemblage species richness in a South African savanna
Parr, Catherine L.
通讯作者Parr, Catherine L.
来源期刊JOURNAL OF ANIMAL ECOLOGY
ISSN0021-8790
出版年2008
卷号77期号:6页码:1191-1198
英文摘要

1. Competition is considered a key factor structuring many communities, and has been described as the ’hallmark’ of ant ecology. Dominant species are thought to play a key role structuring local ant assemblages through competitive exclusion.


2. However, while there have been many studies demonstrating competitive exclusion and consequently reduced richness at baits, it is not clear whether such regulation of ’momentary’ diversity at clumped food resources can scale up to the regulation of richness at the site or assemblage level.


3. In this study, ant assemblages were sampled in three different savanna habitats in South Africa using both baiting and pitfall trapping.


4. As has been found in previous studies, there was a unimodal relationship between dominant ants and species richness at baits, with high abundances of dominant ants regulating species richness through competitive exclusion. Analysis of pitfall samples revealed strong convergence in pattern, and results from null model co-occurrence analyses supported the findings.


5. The importance of competition in structuring local ant assemblages was, however, only apparent at one of the three savanna habitats suggesting that a full range of extreme environments is needed to produce the full unimodal relationship at the assemblage level.


6. Although the relative importance of competition varied with habitat type, the study demonstrated that in some habitats, dominant ants can control species richness at the assemblage level.


英文关键词assemblage structure behavioural dominance competition numerical dominance savanna
类型Article
语种英语
国家England
收录类别SCI-E
WOS记录号WOS:000260052400014
WOS关键词NULL MODEL ANALYSIS ; COMMUNITY STRUCTURE ; FUNCTIONAL-GROUPS ; RESOURCE USE ; DESERT ANT ; TRADE-OFF ; COMPETITION ; DIVERSITY ; PATTERNS ; GUILD
WOS类目Ecology ; Zoology
WOS研究方向Environmental Sciences & Ecology ; Zoology
来源机构University of Oxford
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/157854
作者单位(1)Univ Oxford, Ctr Environm, Environm Change Inst, Oxford OX1 3QY, England
推荐引用方式
GB/T 7714
Parr, Catherine L.. Dominant ants can control assemblage species richness in a South African savanna[J]. University of Oxford,2008,77(6):1191-1198.
APA Parr, Catherine L..(2008).Dominant ants can control assemblage species richness in a South African savanna.JOURNAL OF ANIMAL ECOLOGY,77(6),1191-1198.
MLA Parr, Catherine L.."Dominant ants can control assemblage species richness in a South African savanna".JOURNAL OF ANIMAL ECOLOGY 77.6(2008):1191-1198.
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