干旱区生态环境知识资源中心(Arid): Deer dietary responses to wildfire: Optimal foraging, individual specialization, or opportunism?

Arid

DOI	10.1111/mec.17185
	Deer dietary responses to wildfire: Optimal foraging, individual specialization, or opportunism?
	White, Carly Q.; Bush, Joshua P.; Sacks, Benjamin N.
通讯作者	Sacks, BN
来源期刊	MOLECULAR ECOLOGY
ISSN	0962-1083
EISSN	1365-294X
出版年	2023
卷号	32 期号:24 页码:6953-6968
英文摘要	Increasing impacts of wildfire on arid regions of the world fuelled by climate change highlight the need to better understand how natural communities respond to fire. We took advantage of a large (1660-km(2)) wildfire that erupted in northern California during an in-progress study of black-tailed deer (Odocoileus hemionus columbianus) to investigate deer use of and diets within burned and unburned habitats before and after the fire. We compared deer diet breadth to predictions of optimal foraging theory, the niche variation hypothesis, and opportunistic (i.e., generalist) foraging expectations under the assumption that overall availability and diversity of forage in burned areas declined immediately after the fire and increased as the plant community recovered in the next 3 years after the fire. We used faecal pellet counts to document space use and metabarcoding to study diet during pre-fire, post-fire, and recovery periods. Pellet counts supported predictions that deer increased use of unburned sites and reduced use of burn sites after the fire and began to return to burned sites in subsequent sampling years. Diet diversity did not differ significantly between control and burn sites before the fire, but was lower in burn than control sites post-fire (p < .001), when and where diet was dominated by oak (Quercus spp). In contrast, during subsequent years, diet diversity was higher (including more herbaceous plants) in burn than control sites (p < .05). In contrast to predictions of optimal foraging and niche variation hypotheses, individual deer foraged as generalists for which changes in dietary niche breadth paralleled fire-induced changes in diversity of the plant community.
英文关键词	black-tailed deer diet faecal metabarcoding oaks Odocoileus hemionus columbianus optimal foraging theory wildfire
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001098152400001
WOS关键词	MULE DEER ; SELECTION ; PREFERENCE ; HERBIVORE ; ECOLOGY ; FOREST
WOS类目	Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology
WOS研究方向	Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397866
推荐引用方式 GB/T 7714	White, Carly Q.,Bush, Joshua P.,Sacks, Benjamin N.. Deer dietary responses to wildfire: Optimal foraging, individual specialization, or opportunism?[J],2023,32(24):6953-6968.
APA	White, Carly Q.,Bush, Joshua P.,&Sacks, Benjamin N..(2023).Deer dietary responses to wildfire: Optimal foraging, individual specialization, or opportunism?.MOLECULAR ECOLOGY,32(24),6953-6968.
MLA	White, Carly Q.,et al."Deer dietary responses to wildfire: Optimal foraging, individual specialization, or opportunism?".MOLECULAR ECOLOGY 32.24(2023):6953-6968.