干旱区生态环境知识资源中心(Arid): Differences in the use of surface water resources by desert birds are revealed using isotopic tracers

Arid

DOI	10.1093/auk/uky005
	Differences in the use of surface water resources by desert birds are revealed using isotopic tracers
	Smit, Ben 1,6; Woodborne, Stephan 2,3; Wolf, Blair O.4; McKechnie, Andrew E.1,5
通讯作者	Smit, Ben
来源期刊	AUK
ISSN	0004-8038
EISSN	1938-4254
出版年	2019
卷号	136 期号:1
英文摘要	The scarcity of free-standing water sources is a key determinant of animal and plant community structure in arid environments, and an understanding of the extent to which particular species use surface water is vital for modeling the effects of climate change on desert avifauna. We investigated interspecific variation in the use of artificial water sources among birds in the Kalahari Desert, South Africa, by (i) observations at waterholes and (ii) tracing spatial water-use patterns during summer by isotopically labeled water sources and blood sampling. More than 50% of the avian community (primarily insectivores and omnivores) were not observed to drink. The majority (53%) of species drinking at waterholes were granivorous, and their use of surface water was best predicted by their relative abundance in the community. Species representing the remaining dietary guilds drank significantly more on hot days. Blood samples revealed that only 11 of 42 species (mostly granivores and a few omnivores) showed evidence of drinking at a waterhole with enriched deuterium values; on average, in the latter birds, water from the enriched waterhole accounted for similar to 38% of their body water pool. These findings illustrate that 2 methods employed in this study provide different, but complementary data on the relative importance of a water source for an avian community. Although our results suggest that most avian species are independent of surface water, drinking patterns on the hottest days during our study period suggest that free-standing water might become more important for some of the non-drinking species under hotter climatic conditions.
英文关键词	drinking behaviors stable isotopes water balance
类型	Article
语种	英语
国家	England ; South Africa ; USA
收录类别	SCI-E
WOS记录号	WOS:000463869900005
WOS关键词	STABLE-ISOTOPES ; GRANIVOROUS BIRDS ; DRINKING PATTERNS ; SAGUARO FRUIT ; HEAT-BALANCE ; DUNE LARKS ; WILDLIFE ; TEMPERATURES ; FLIGHT ; SANDGROUSE
WOS类目	Ornithology
WOS研究方向	Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214547
作者单位	1.Univ Pretoria, Dept Zool & Entomol, Percy FitzPatrick Inst, DST NRF Ctr Excellence, Hatfield, Herts, England; 2.iThemba LABS, Johannesburg, South Africa; 3.Univ Pretoria, Dept Zool & Entomol, Mammal Res Inst, Hatfield, Herts, England; 4.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA; 5.South African Natl Biodivers Inst, Natl Zool Garden, South African Res Chair Conservat Physiol, Pretoria, South Africa; 6.Rhodes Univ, Dept Zool & Entomol, Grahamstown, South Africa
推荐引用方式 GB/T 7714	Smit, Ben,Woodborne, Stephan,Wolf, Blair O.,et al. Differences in the use of surface water resources by desert birds are revealed using isotopic tracers[J],2019,136(1).
APA	Smit, Ben,Woodborne, Stephan,Wolf, Blair O.,&McKechnie, Andrew E..(2019).Differences in the use of surface water resources by desert birds are revealed using isotopic tracers.AUK,136(1).
MLA	Smit, Ben,et al."Differences in the use of surface water resources by desert birds are revealed using isotopic tracers".AUK 136.1(2019).