{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T08:14:04Z","timestamp":1793088844555,"version":"4.5.0"},"reference-count":68,"publisher":"Oxford University Press (OUP)","issue":"9","license":[{"start":{"date-parts":[[2026,3,20]],"date-time":"2026-03-20T00:00:00Z","timestamp":1773964800000},"content-version":"vor","delay-in-days":1,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100008439","name":"Texas Christian University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100008439","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Augustana College Center for Polar Studies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Despite their distance from major anthropogenic emission sources, Arctic food webs are contaminated with toxic methylmercury (MeHg). Due to the region\u2019s vast size and remoteness, there remains a paucity of Hg observations. Measuring bioavailable MeHg in sentinel organisms, species that accumulate contaminants without significant adverse effects, offers an efficient monitoring strategy. Spiders could be ideal sentinels because they are consistently abundant in Arctic ecosystems and are consumed by nestling songbirds, linking aquatic MeHg contamination to terrestrial consumers. This study (1) assessed whether spiders reflect freshwater MeHg contamination in six lentic systems in North Greenland and (2) evaluated whether MeHg-contaminated spiders pose health risks to arachnivorous birds. We sampled riparian Arctic wolf spiders (Lycosidae: Pardosa glacialis) along with emergent aquatic insects as proxies for aquatic MeHg contamination. Methylmercury concentrations in spiders were positively related to spider body size (measured as tibia + patella length). The average (M \u00b1 SE) MeHg concentration of spiders was 424.0 \u00b1 28.4\u2009ng\/g dry weight and varied 2.7-fold among ponds, whereas the average MeHg concentration of emergent aquatic insects averaged 87.1 \u00b1 11.8\u2009ng\/g dry weight and varied 2.5-fold among ponds. A positive relationship between spider and emergent aquatic insect MeHg concentration suggests that spiders are sentinels of aquatic MeHg contamination for our study systems. Our modeling results, combined with published diet studies of nestling birds, suggest that Lapland longspur (Calcarius lapponicus) nestlings do not consume a sufficiently large proportion of spiders to be at risk of adverse health effects. In contrast, 1-day-old snow bunting (Plectrophenax nivalis) nestlings at all of our study sites, as well as older nestlings at contaminated sites, may consume enough spiders to be at risk of harmful effects from MeHg. However, given the limited number of studies on nestling diet, these results should be interpreted with caution. These findings suggest that P. glacialis can serve as a high-resolution proxy for MeHg contamination in High Arctic lakes but that using them to their full potential in risk assessments will require additional studies on the diets of Arctic passerines. As the Arctic undergoes climate-driven changes to mercury cycling, spider-based monitoring can detect emerging hotspots and guide wildlife protection.<\/jats:p>","DOI":"10.1093\/etojnl\/vgag064","type":"journal-article","created":{"date-parts":[[2026,3,20]],"date-time":"2026-03-20T04:34:30Z","timestamp":1773981270000},"page":"2535-2547","source":"Crossref","is-referenced-by-count":1,"title":["Spiders as sentinels of mercury contamination in High Arctic lentic ecosystems and risk to arachnivorous birds"],"prefix":"10.1093","volume":"45","author":[{"given":"Benjamin N","family":"Strang","sequence":"first","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7160-3157","authenticated-orcid":false,"given":"Matthew M","family":"Chumchal","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kurt K","family":"Burnham","sequence":"additional","affiliation":[{"name":"High Arctic Institute , Orion, IL,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Camryn H","family":"Middlebrooks","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Madeline P","family":"Hannappel","sequence":"additional","affiliation":[{"name":"Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin D","family":"Barst","sequence":"additional","affiliation":[{"name":"Water and Environmental Research Center, University of Alaska Fairbanks , Fairbanks, AK,","place":["United States"]},{"name":"Department of Earth, Energy, and Environment, University of Calgary , Calgary, Alberta,","place":["Canada"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James H","family":"Kennedy","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences, University of North Texas , Denton, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kevin T","family":"Myers","sequence":"additional","affiliation":[{"name":"High Arctic Institute , Orion, IL,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah E","family":"Scott","sequence":"additional","affiliation":[{"name":"High Arctic Institute , Orion, IL,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aleah R","family":"Appel","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin P","family":"Katzenmeyer","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Iris E","family":"Schmeder","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emma C","family":"Sullivan","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lance D","family":"Viscioni-Wilson","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Reuben A","family":"Heine","sequence":"additional","affiliation":[{"name":"Department of Geography, Augustana College , Rock Island, IL,","place":["United States"]},{"name":"BlueContour Consulting , Washington, DC,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher W","family":"Allender","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Morgan N","family":"Capone","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tyler T","family":"Williams","sequence":"additional","affiliation":[{"name":"Biology Department, Texas Christian University , Fort Worth, TX,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,3,19]]},"reference":[{"key":"2026090706171876600_vgag064-B1","unstructured":"Akers P. D. (2024). pete-d-akers\/pituffik_geospatial: Pituffik, Greenland, hydrological geopackage (Version v1.2) [Computer software]. Zenodo. 10.5281\/zenodo.12648271"},{"key":"2026090706171876600_vgag064-B2","doi-asserted-by":"publisher","first-page":"e2023WR036121","DOI":"10.1029\/2023WR036121","article-title":"The pivotal role of evaporation in lake water isotopic variability across space and time in a High Arctic periglacial landscape","volume":"60","author":"Akers","year":"2024","journal-title":"Water Resources Research"},{"key":"2026090706171876600_vgag064-B3","author":"Arctic Monitoring and Assessment Programme (AMAP)","year":"2021"},{"key":"2026090706171876600_vgag064-B4","doi-asserted-by":"publisher","first-page":"2314","DOI":"10.1002\/etc.4848","article-title":"The spider exposure pathway and the potential risk to arachnivorous birds","volume":"39","author":"Beaubien","year":"2020","journal-title":"Environmental Toxicology and Chemistry"},{"key":"2026090706171876600_vgag064-B5","doi-asserted-by":"publisher","first-page":"285","DOI":"10.1016\/S0269-7491(00)00038-5","article-title":"What do sentinels stand 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