干旱区生态环境知识资源中心(Arid): Structural changes over time in individual-based networks involving a harvester ant, seeds, and invertebrates

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DOI	10.1111/een.12764
	Structural changes over time in individual-based networks involving a harvester ant, seeds, and invertebrates
	Anjos, Diego, V 1; Luna, Pedro 2; Borges, Carla C. R.3; Dattilo, Wesley 2; Del-Claro, Kleber 1,3
通讯作者	Anjos, Diego, V
来源期刊	ECOLOGICAL ENTOMOLOGY
ISSN	0307-6946
EISSN	1365-2311
出版年	2019
卷号	44 期号:6 页码:753-761
英文摘要	1. Harvester ants perform important ecological functions, such as seed predation and redistribution of nutrients in the soil, through a complex of ecological interactions. Most studies are static descriptions of network structure, while their temporal organisations and the factors that modulate it have been neglected. 2. This study describes the temporal organisation and the influence of climatic variables (e.g. temperature and rainfall) on network structure between a harvester ant species and its food resources (seeds and invertebrates) in the Brazilian savanna over a 1-year period. In addition, considering the ant-seed networks, the relationship between the size of seeds collected by ants and the distance travelled was examined, as well as how this relationship behaves over time. 3. For all network types (ant-seed, ant-invertebrate, and combined) there was great structural variation throughout the year. Among climatic variables, only rainfall influenced the properties of ant-invertebrate networks, presenting a positive influence on diversity of interactions and a negative influence on network specialisation. Finally, this study shows that harvester ants tend to collect larger seeds in the vicinity of the nest (< 5 m) and smaller seeds at greater distances, and this relationship appears to be constant over time. 4. This study highlights that ecological networks are useful tools with which to understand the temporal organisation of ecological functions. In addition, climatic changes, mainly in the rainfall regime, may interfere directly in the availability of resources and ultimately in the interactions between harvester ants and their food resources.
英文关键词	ant-plant interactions Brazilian savanna climatic changes invertebrate carrion optimal foraging theory seed predation
类型	Article
语种	英语
国家	Brazil ; Mexico
收录类别	SCI-E
WOS记录号	WOS:000495124300004
WOS关键词	CENTRAL MONTE DESERT ; FORAGING BEHAVIOR ; TEMPORAL VARIATION ; POGONOMYRMEX SPP. ; FOOD-WEB ; CONSTRAINTS ; ABUNDANCE ; PATTERN ; SIZE ; RESOURCES
WOS类目	Entomology
WOS研究方向	Entomology
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311116
作者单位	1.Univ Sao Paulo, Programa Posgrad Entomol, Sao Paulo, Brazil; 2.Inst Ecol AC, Red Ecoetol, Xalapa, Veracruz, Mexico; 3.Univ Fed Uberlandia, Inst Biol, Uberlandia, MG, Brazil
推荐引用方式 GB/T 7714	Anjos, Diego, V,Luna, Pedro,Borges, Carla C. R.,et al. Structural changes over time in individual-based networks involving a harvester ant, seeds, and invertebrates[J],2019,44(6):753-761.
APA	Anjos, Diego, V,Luna, Pedro,Borges, Carla C. R.,Dattilo, Wesley,&Del-Claro, Kleber.(2019).Structural changes over time in individual-based networks involving a harvester ant, seeds, and invertebrates.ECOLOGICAL ENTOMOLOGY,44(6),753-761.
MLA	Anjos, Diego, V,et al."Structural changes over time in individual-based networks involving a harvester ant, seeds, and invertebrates".ECOLOGICAL ENTOMOLOGY 44.6(2019):753-761.