A lacustrine palynological record from Long Lake/King George

A lacustrine palynological record from Long Lake/King George | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article A lacustrine palynological record from Long Lake/King George Luiz Antonio Costa Rodrigues, Cláudia Barbieri Ferreira Mendonça, and 4 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7520482/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract A palynological analysis of a sediment core collected from Long Lake, Fildes Peninsula/King George Island/Antarctic Peninsula, revealed regional changes in depositional processes over the Late Holocene. The results revealed a record of pollen grains, spores, arthropod fragments, and fungi at top core layers, as well as intact individuals of Drepanocladus longifolius in deeper sections. Overall, pollen grains accompanied sedimentary laminated structures suggesting shrinkage of the climate at the pro-glacial environment, as well as an atmospheric connection between South America and the Northern Antarctic Peninsula modulated by the westerly winds. Antarctica climate change pollen sedimentology westerly winds Figures Figure 1 Figure 2 Figure 3 Figure 4 Full Text Additional Declarations No competing interests reported. Table 1 is available in the Supplementary Files section. Supplementary Files Tab1.doc Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7520482","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":517635272,"identity":"de0be7a1-1611-4dfa-abc5-017c29735364","order_by":0,"name":"Luiz Antonio Costa Rodrigues","email":"","orcid":"","institution":"Federal University of Rio de Janeiro","correspondingAuthor":false,"prefix":"","firstName":"Luiz","middleName":"Antonio Costa","lastName":"Rodrigues","suffix":""},{"id":517635273,"identity":"c90fd997-a290-4302-98b6-bd6384ba8b4a","order_by":1,"name":"Cláudia Barbieri Ferreira Mendonça","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA2klEQVRIiWNgGAWjYDACCTDJDCIYHwAJHj5StDAbgLSwkaKFDcwmqIV/dgPrho87rOXM2Q8/q/yaYyfDxsD88NENfJbcOcB2c+aZdGPLnjSz27LbkoEOYzM2zsGjxUAige02b9vhxA03GMxuS25jBmrhYZMmqOUvWAv7t2LJbfVEamEEa+ExY/y47TBhLRJ3Drbd7G1LNzY4k1MszbjtOA8bMwG/8M9uPnbjZ5u1nMHx4xs//txWbc/P3vzwMT4twDhvgDOZecAkXuXoun+QonoUjIJRMApGDAAA1y5Fsjj+/3YAAAAASUVORK5CYII=","orcid":"","institution":"Federal University of Rio de Janeiro","correspondingAuthor":true,"prefix":"","firstName":"Cláudia","middleName":"Barbieri Ferreira","lastName":"Mendonça","suffix":""},{"id":517635274,"identity":"cf56461d-7082-48a1-9f83-ad35ee5deff6","order_by":2,"name":"Heitor Evangelista","email":"","orcid":"","institution":"Rio de Janeiro State University","correspondingAuthor":false,"prefix":"","firstName":"Heitor","middleName":"","lastName":"Evangelista","suffix":""},{"id":517635275,"identity":"19a69395-9138-4c33-becf-e92e1ccb827a","order_by":3,"name":"Sergei Verkulich","email":"","orcid":"","institution":"Herzen State Pedagogical University of Russia","correspondingAuthor":false,"prefix":"","firstName":"Sergei","middleName":"","lastName":"Verkulich","suffix":""},{"id":517635276,"identity":"c78ccbe6-4241-4207-8d3b-243bfcf1f9bb","order_by":4,"name":"Flavia Alves Tavares","email":"","orcid":"","institution":"Rio de Janeiro State University","correspondingAuthor":false,"prefix":"","firstName":"Flavia","middleName":"Alves","lastName":"Tavares","suffix":""},{"id":517635277,"identity":"a3e91ef6-05d5-4403-b44c-1ed128254fca","order_by":5,"name":"Vania Gonçalves-Esteves","email":"","orcid":"","institution":"Federal University of Rio de Janeiro","correspondingAuthor":false,"prefix":"","firstName":"Vania","middleName":"","lastName":"Gonçalves-Esteves","suffix":""}],"badges":[],"createdAt":"2025-09-02 18:38:36","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7520482/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7520482/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":92131613,"identity":"9152e099-943f-4cc1-9e99-0c90df3a3de8","added_by":"auto","created_at":"2025-09-25 03:19:41","extension":"tif","order_by":0,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":49585414,"visible":true,"origin":"","legend":"","description":"","filename":"Fig.1.tif","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/e4488b99dc6b3b35c904df44.tif"},{"id":92131606,"identity":"55b8800a-9236-48db-8299-3b85a30b7975","added_by":"auto","created_at":"2025-09-25 03:19:40","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":532554,"visible":true,"origin":"","legend":"","description":"","filename":"AlacustrinepalynologicalrecordfromLongLakeKing.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/1c54b370eafdcd368994fcb5.pdf"},{"id":92132372,"identity":"3cf23ec6-b591-4085-a331-145e447d3d1e","added_by":"auto","created_at":"2025-09-25 03:27:41","extension":"tif","order_by":2,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":21772566,"visible":true,"origin":"","legend":"","description":"","filename":"Fig.2.tif","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/f3f1c071b673e786d1d47f3a.tif"},{"id":92131610,"identity":"16858e36-5bd3-48cb-acbf-d5a81b5151e4","added_by":"auto","created_at":"2025-09-25 03:19:41","extension":"tif","order_by":3,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":27515398,"visible":true,"origin":"","legend":"","description":"","filename":"Fig.3.tif","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/f423a20370514801b698073f.tif"},{"id":92132368,"identity":"5d0bd61b-e0ec-4077-8998-a36555aa18fd","added_by":"auto","created_at":"2025-09-25 03:27:40","extension":"doc","order_by":4,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":32768,"visible":true,"origin":"","legend":"","description":"","filename":"Tab1.doc","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/e8979877b875ff11f237ae34.doc"},{"id":92132371,"identity":"c6f0d74e-70fc-4b83-8c38-26a8d3e2c2e9","added_by":"auto","created_at":"2025-09-25 03:27:41","extension":"tif","order_by":5,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":26526886,"visible":true,"origin":"","legend":"","description":"","filename":"Fig.4.tif","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/585ff74ab755a583d2e16b9a.tif"},{"id":92132369,"identity":"b8ee1e4b-df65-48f7-bc79-9559da95f8ed","added_by":"auto","created_at":"2025-09-25 03:27:40","extension":"json","order_by":6,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":6379,"visible":true,"origin":"","legend":"","description":"","filename":"b197293949414f3c86b97aed0c9c232a.json","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/2250ba352dd7d847b0ca862d.json"},{"id":92131604,"identity":"06bb4e5b-77fd-4a4c-a211-aededa0ee73c","added_by":"auto","created_at":"2025-09-25 03:19:40","extension":"png","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":2940248,"visible":true,"origin":"","legend":"\u003cp\u003e(a,b) Fildes Peninsula and its location at King George Island; (b) Long lake site at the ice free region of Fildes Peninsula; (c) LL2-IAEA sediment core sampling at Long Lake; (d) a view of Long Lake.\u003c/p\u003e","description":"","filename":"Fig.1.png","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/6c8d831184f1d269c2d7e740.png"},{"id":92132367,"identity":"b87fe1f4-3b73-4895-b1a8-e36251364ee7","added_by":"auto","created_at":"2025-09-25 03:27:40","extension":"png","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":914205,"visible":true,"origin":"","legend":"\u003cp\u003ePalynological record of Long Lake sediment core section (Upper 1 m): A. Fragment of arthropod, B. Fragment of vegetal, C. Pteridaceae, D. Hydrodictyaceae, E. fragmento de hifas, F. Poaceae, G-H. Malvaceae, I-J. Assulina muscorum (Euglyphidae), K. Pteridaceae, L. Poaceae. Scale (black bold line): 10μm.\u003c/p\u003e","description":"","filename":"Fig.2.png","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/067c4ac3e98597d70d782cd7.png"},{"id":92131602,"identity":"a4700387-35ff-497b-bd8f-9ef2320558cd","added_by":"auto","created_at":"2025-09-25 03:19:40","extension":"png","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":498413,"visible":true,"origin":"","legend":"\u003cp\u003eSedimentological-climate-palynological composite data: (A) sediment core X-ray-chronology-pollen data; (B) Magnectic Susceptibility; (C) 50-yr summer air temperature (from δD) for West Antarctica ice core (Jones et al., 2023); (D) Total pollen from Southern Patagonia from McCulloch et al. (2020); (E) and westerly winds proxy from a paleovegetation index Apiaceae/Asteraceae, Moreno et al. (2009); i, ii. Iii and iv are sedimentological sections defined to the core.\u003c/p\u003e","description":"","filename":"Fig.3.png","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/abc9b9091212c1a101136255.png"},{"id":92132579,"identity":"9acf69b3-4c2d-43a8-bf8e-054e35eddb23","added_by":"auto","created_at":"2025-09-25 03:35:40","extension":"png","order_by":4,"title":"Figure 4","display":"","copyAsset":false,"role":"figure","size":1460589,"visible":true,"origin":"","legend":"\u003cp\u003eAtmospheric dispersion for modern extreme scenarios, during ENSO events in three different conditions: (a) a typical neutral year (2013/2014); (b) a typical strong La Niña year (2010/2011); and (c) a typical strong El Niño year (1997/1998).\u003c/p\u003e","description":"","filename":"Fig.4.png","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/f6347c1659ec9b5437c98646.png"},{"id":105855714,"identity":"99cc18d8-1658-4a7f-95e6-faf1e5ce4ebd","added_by":"auto","created_at":"2026-03-31 21:54:25","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2748262,"visible":true,"origin":"","legend":"","description":"","filename":"AlacustrinepalynologicalrecordfromLongLakeKing.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1_covered_ff96b814-f089-4957-8465-4d7492162f5f.pdf"},{"id":92131601,"identity":"171ec202-1899-467d-82ab-495be0b85bb1","added_by":"auto","created_at":"2025-09-25 03:19:40","extension":"doc","order_by":1,"title":"","display":"","copyAsset":false,"role":"supplement","size":33280,"visible":true,"origin":"","legend":"","description":"","filename":"Tab1.doc","url":"https://assets-eu.researchsquare.com/files/rs-7520482/v1/eb0d1381fb04bc77ae703976.doc"}],"financialInterests":"\u003cp\u003eNo competing interests reported.\u003c/p\u003e\n\u003cp\u003eTable 1 is available in the Supplementary Files section.\u003c/p\u003e","formattedTitle":"\u003cp\u003eA lacustrine palynological record from Long Lake/King George \u003c/p\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Antarctica, climate change, pollen, sedimentology, westerly winds","lastPublishedDoi":"10.21203/rs.3.rs-7520482/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7520482/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"A palynological analysis of a sediment core collected from Long Lake, Fildes Peninsula/King George Island/Antarctic Peninsula, revealed regional changes in depositional processes over the Late Holocene. The results revealed a record of pollen grains, spores, arthropod fragments, and fungi at top core layers, as well as intact individuals of Drepanocladus longifolius in deeper sections. Overall, pollen grains accompanied sedimentary laminated structures suggesting shrinkage of the climate at the pro-glacial environment, as well as an atmospheric connection between South America and the Northern Antarctic Peninsula modulated by the westerly winds.","manuscriptTitle":"A lacustrine palynological record from Long Lake/King George","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-09-25 03:19:36","doi":"10.21203/rs.3.rs-7520482/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"66016e52-b077-4495-9531-cc1c38a84bb6","owner":[],"postedDate":"September 25th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2026-03-31T21:53:07+00:00","versionOfRecord":[],"versionCreatedAt":"2025-09-25 03:19:36","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7520482","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7520482","identity":"rs-7520482","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}