干旱区生态环境知识资源中心(Arid): Geographic Drivers of Mercury Entry into Aquatic Food Webs Revealed by Mercury Stable Isotopes in Dragonfly Larvae

Arid

DOI	10.1021/acs.est.4c02436
	Geographic Drivers of Mercury Entry into Aquatic Food Webs Revealed by Mercury Stable Isotopes in Dragonfly Larvae
	Janssen, Sarah E.; Kotalik, Christopher J.; Willacker, James J.; Tate, Michael T.; Pritz, Colleen M. Flanagan; Nelson, Sarah J.; Krabbenhoft, David P.; Walters, David M.; Eagles-Smith, Collin A.
通讯作者	Janssen, SE
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN	0013-936X
EISSN	1520-5851
出版年	2024
卷号	58 期号:30 页码:13444-13455
英文摘要	Atmospheric mercury (Hg) emissions and subsequent transport and deposition are major concerns within protected lands, including national parks, where Hg can bioaccumulate to levels detrimental to human and wildlife health. Despite this risk to biological resources, there is limited understanding of the relative importance of different Hg sources and delivery pathways within the protected regions. Here, we used Hg stable isotope measurements within a single aquatic bioindicator, dragonfly larvae, to determine if these tracers can resolve spatial patterns in Hg sources, delivery mechanisms, and aquatic cycling at a national scale. Mercury isotope values in dragonfly tissues varied among habitat types (e.g., lentic, lotic, and wetland) and geographic location. Photochemical-derived isotope fractionation was habitat-dependent and influenced by factors that impact light penetration directly or indirectly, including dissolved organic matter, canopy cover, and total phosphorus. Strong patterns for Delta 200Hg emerged in the western United States, highlighting the relative importance of wet deposition sources in arid regions in contrast to dry deposition delivery in forested regions. This work demonstrates the efficacy of dragonfly larvae as biosentinels for Hg isotope studies due to their ubiquity across freshwater ecosystems and ability to track variation in Hg sources and processing attributed to small-scale habitat and large-scale regional patterns.
英文关键词	bioaccumulation mercury stable isotopes bioindicators mercury deposition photochemistry
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:001270024100001
WOS关键词	MASS-INDEPENDENT FRACTIONATION ; CONTERMINOUS UNITED-STATES ; WET DEPOSITION ; SPATIAL-PATTERNS ; METHYLMERCURY PRODUCTION ; TEMPORAL TRENDS ; DRY DEPOSITION ; GREAT-LAKES ; US ; FISH
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS研究方向	Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403648
推荐引用方式 GB/T 7714	Janssen, Sarah E.,Kotalik, Christopher J.,Willacker, James J.,et al. Geographic Drivers of Mercury Entry into Aquatic Food Webs Revealed by Mercury Stable Isotopes in Dragonfly Larvae[J],2024,58(30):13444-13455.
APA	Janssen, Sarah E..,Kotalik, Christopher J..,Willacker, James J..,Tate, Michael T..,Pritz, Colleen M. Flanagan.,...&Eagles-Smith, Collin A..(2024).Geographic Drivers of Mercury Entry into Aquatic Food Webs Revealed by Mercury Stable Isotopes in Dragonfly Larvae.ENVIRONMENTAL SCIENCE & TECHNOLOGY,58(30),13444-13455.
MLA	Janssen, Sarah E.,et al."Geographic Drivers of Mercury Entry into Aquatic Food Webs Revealed by Mercury Stable Isotopes in Dragonfly Larvae".ENVIRONMENTAL SCIENCE & TECHNOLOGY 58.30(2024):13444-13455.