Seasonal distribution patterns and conservation gaps of blue sharks in the Indo-Western Pacific Ocean

doi:10.1111/ddi.13828

IOCAS-IR > 海洋环流与波动重点实验室

	Seasonal distribution patterns and conservation gaps of blue sharks in the Indo-Western Pacific Ocean
	Zhang, Yuewen 1; Lian, Peng2 ; Zhang, Xiong 1,3,4,5
	2024-03-06
发表期刊	DIVERSITY AND DISTRIBUTIONS
ISSN	1366-9516
页码	12
通讯作者	Zhang, Xiong(zhangx758@mail.sysu.edu.cn)
摘要	Aim: Oceanic sharks play an important role in maintaining the stability and biodiversity of marine ecosystems, and yet they are among the most threatened taxa worldwide. Currently, large spatial-scale distribution patterns and conservation gaps are poorly known for most species since they are challenging to study. To address the problem, we here use an integrated approach with an illustration with the blue shark (Prionace glauca), a common bycatch oceanic species. Location: Indo-Western Pacific Ocean (IWPO). Methods: We first collated decades of species occurrences and marine environmental datasets from open-access sources. We then applied ensembled species distribution models (SDMs) to predict its seasonal distributions and evaluated the model performance using true skill statistic (TSS) and area under the receiver-operating characteristic curve (AUC). We finally conducted spatial analyses (e.g. bivariate hotspot analyses) to identify conservation gaps/opportunities based on the predicted distribution maps and two additional datasets, namely, marine protected areas (MPAs) and fishing effort. Results: (1) Both seasonal SDMs performed well (mean TSS > 0.8, AUC > 0.95), and the results suggested that blue sharks were widely distributed in the IWPO with some seasonal differences in ecological niches and distributions (mainly in the West Indian Ocean and the Northwest Pacific Ocean); (2) large MPAs and shark sanctuaries covered comparable, small portions (4%-9%) of blue shark habitats, but these locations (in MPAs and sanctuaries) varied between seasons; (3) fishery-shark conflict hotspots also varied between seasons with some located in or close to large MPAs and sanctuaries. Main conclusions: We provide seasonal (cold vs. warm) distribution maps of blue sharks across the IWPO to advance their conservation and management. We highlight the importance of strengthening management both in and near large MPAs and shark sanctuaries. Our study contributes a feasible integrated approach to reveal seasonal distribution patterns and conservation opportunities for oceanic sharks.
关键词	conservation planning marine protected areas overfishing pelagic shark seasonal habitat uses species distribution model
DOI	10.1111/ddi.13828
收录类别	SCI
语种	英语
资助项目	Science and Technology Planning Projects of Guangdong Province ; Guangdong Basic and Applied Basic Research Foundation[2022A1515010640] ; [2021B1212110002]
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology
WOS记录号	WOS:001180244000001
出版者	WILEY
WOS关键词	SPECIES DISTRIBUTION MODELS ; MARINE PROTECTED AREAS ; PRIONACE-GLAUCA ; PELAGIC SHARKS ; PREDICTION ; MOVEMENT ; BEHAVIOR ; BYCATCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/184856
专题	海洋环流与波动重点实验室
通讯作者	Zhang, Xiong
作者单位	1.Sun Yat Sen Univ, Sch Ecol, Shenzhen, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 3.Sun Yat Sen Univ, Sch Marine Sci, Zhuhai, Peoples R China 4.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China 5.Sun Yat Sen Univ, Sch Ecol, 66 Gongchang Rd, Shenzhen 518107, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yuewen,Lian, Peng,Zhang, Xiong. Seasonal distribution patterns and conservation gaps of blue sharks in the Indo-Western Pacific Ocean[J]. DIVERSITY AND DISTRIBUTIONS,2024:12.
APA	Zhang, Yuewen,Lian, Peng,&Zhang, Xiong.(2024).Seasonal distribution patterns and conservation gaps of blue sharks in the Indo-Western Pacific Ocean.DIVERSITY AND DISTRIBUTIONS,12.
MLA	Zhang, Yuewen,et al."Seasonal distribution patterns and conservation gaps of blue sharks in the Indo-Western Pacific Ocean".DIVERSITY AND DISTRIBUTIONS (2024):12.