干旱区生态环境知识资源中心(Arid): Desert otters: Distribution, habitat use and feeding ecology in arid rivers of Morocco

Arid

DOI	10.1016/j.jaridenv.2020.104165
	Desert otters: Distribution, habitat use and feeding ecology in arid rivers of Morocco
	Riesco, Maria; Delibes, Miguel; Calzada, Javier; Esquivias, Javier; Qninba, Abdeljebbar; Clavero, Miguel
通讯作者	Clavero, M
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2020
卷号	178
英文摘要	Some of the most arid environments inhabited by the Eurasian otter (Lutra lutra) are the river systems draining the southern slopes of the High Atlas Mountains into the Sahara Desert, where we have studied otter distribution, habitat use and feeding ecology. We found signs of otter presence in 61% of 80 sampled sites. The species was widespread at intermediate elevations within the study area, being rarer at high altitudes (above 2000 m a.s.l.) and, especially, in the arid lowlands. The intensity of habitat use, estimated from sprains counts, also peaked at intermediate elevations. Otter diet, described through the analysis of 554 spraints, was dominated by fish in general (found in 97% of the spraints) and Luciobarbus barbels in particular (86% of spraints). The otter positively selected barbels of intermediate sizes (100-160 mm in length), avoiding the smallest size classes and consuming larger ones according to their availability. Our results suggest that otter may be vulnerable to the harsh environmental conditions in arid areas. This aridity-driven vulnerability is expected to increase in the area and to expand to other peri-Mediterranean regions in the future.
英文关键词	Lutra lutra High Atlas mountains Pre-Saharan rivers Distribution limits Marking intensity Diet composition
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000533505200004
WOS关键词	LUTRA-LUTRA POPULATIONS ; FRESH-WATER AVAILABILITY ; PREY SIZE SELECTION ; EURASIAN OTTER ; CLIMATE-CHANGE ; SPRAINTING ACTIVITY ; EUROPEAN-OTTER ; DIET ; L. ; ADAPTATION
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/2XILL650/324473
作者单位	[Riesco, Maria] Minist Polit Terr & Func Publ, Subdelegac Gobierno Girona, Avinguda 20 Juny,2, Girona 17001, Spain; [Delibes, Miguel; Clavero, Miguel] CSIC, Estn Biol Donana, Amer Vespucio SN, Seville 41092, Spain; [Calzada, Javier] Univ Huelva, Dept Ciencias Integradas, Area Zool, Av Tres de Marzo SN, Huelva 21071, Spain; [Esquivias, Javier] Calle Alheli 11,3 Izda, Seville 41008, Spain; [Qninba, Abdeljebbar] Univ Mohammed V Agdal, Inst Sci, Av Ibn Battota,BP 703 Agdal, Rabat, Morocco
推荐引用方式 GB/T 7714	Riesco, Maria,Delibes, Miguel,Calzada, Javier,et al. Desert otters: Distribution, habitat use and feeding ecology in arid rivers of Morocco[J],2020,178.
APA	Riesco, Maria,Delibes, Miguel,Calzada, Javier,Esquivias, Javier,Qninba, Abdeljebbar,&Clavero, Miguel.(2020).Desert otters: Distribution, habitat use and feeding ecology in arid rivers of Morocco.JOURNAL OF ARID ENVIRONMENTS,178.
MLA	Riesco, Maria,et al."Desert otters: Distribution, habitat use and feeding ecology in arid rivers of Morocco".JOURNAL OF ARID ENVIRONMENTS 178(2020).