{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T09:28:04Z","timestamp":1787218084851,"version":"build-2736575974"},"reference-count":60,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T00:00:00Z","timestamp":1783641600000},"content-version":"vor","delay-in-days":9,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T00:00:00Z","timestamp":1782864000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100023560","name":"Bioplatforms Australia","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100023560","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ecology and Evolution"],"published-print":{"date-parts":[[2026,7]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Protection and restoration of ecosystems, ceasing human\u2010induced extinctions and maintaining genetic diversity are key goals for the Global Biodiversity Framework. Molecular techniques can provide empirical data to understand all these goals and provide actionable conservation advice.\n                    <jats:italic>Acacia araneosa<\/jats:italic>\n                    , an endangered aridland shrub, has a restricted distribution in South Australia where it coexists sympatrically with the widespread\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>Acacia rivalis<\/jats:italic>\n                    <\/jats:styled-content>\n                    . Evidence of hybridisation between the two challenges the\n                    <jats:italic>A. araneosa<\/jats:italic>\n                    species concept. Here, we examine the genetic distinctness between the two species and use a genomic approach to estimate population genetic structure and historical population size. We used SNP data to quantify species boundaries, population structure, demography, kinship and genetic diversity within and between populations of both\n                    <jats:italic>A. araneosa<\/jats:italic>\n                    and\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>A. rivalis<\/jats:italic>\n                    <\/jats:styled-content>\n                    . We found that while\n                    <jats:italic>A<\/jats:italic>\n                    .\n                    <jats:italic>araneosa<\/jats:italic>\n                    and\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>A. rivalis<\/jats:italic>\n                    <\/jats:styled-content>\n                    hybridise to produce F1 hybrids, further backcrossing and gene flow are limited, suggesting that a post\u2010zygotic breeding barrier may exist and that the two species are distinct. Genetic structure within\n                    <jats:italic>A. araneosa<\/jats:italic>\n                    suggests limited gene flow between the two remaining populations occurring within its small range. Our results also reveal a major reduction in effective population size (\n                    <jats:italic>Ne<\/jats:italic>\n                    ) in recent times, dropping from ~49,000 to ~51 (\u221299.9%) over the last 3200\u2009years, coinciding with widespread climatic drying across southern Australia. Paleoclimatic data over the last 3000\u2009years in arid Australia are uncertain; hence, we provide novel empirical support for continued drying in this region using molecular techniques. We recommend that\n                    <jats:italic>A. araneosa<\/jats:italic>\n                    be listed as Critically Endangered on the IUCN Red List, and that the remaining populations are actively conserved and managed to maintain (and ideally increase) population size and genetic diversity.\n                  <\/jats:p>","DOI":"10.1002\/ece3.73959","type":"journal-article","created":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T02:59:28Z","timestamp":1783738768000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Population Collapse of the Spidery Wattle (\n                    <i>Acacia araneosa<\/i>\n                    ) During Late Holocene Aridification: Genomic Evidence for Critically Endangered Status"],"prefix":"10.1002","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-9444-7246","authenticated-orcid":false,"given":"Brittany P.","family":"Hogben","sequence":"first","affiliation":[{"name":"School of Biological Sciences Adelaide University  Adelaide South Australia Australia"},{"name":"Environment Institute Adelaide University  Adelaide South Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew J.","family":"Lowe","sequence":"additional","affiliation":[{"name":"School of Biological Sciences Adelaide University  Adelaide South Australia Australia"},{"name":"Environment Institute Adelaide University  Adelaide South Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chelsea","family":"Hampel","sequence":"additional","affiliation":[{"name":"School of Biological Sciences Adelaide University  Adelaide South Australia Australia"},{"name":"Environment Institute Adelaide University  Adelaide South Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lars","family":"Littmann","sequence":"additional","affiliation":[{"name":"Department of Zoology, Centre for Palaeogenetics Stockholm University  Stockholm Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"O'Leary","sequence":"additional","affiliation":[{"name":"State Herbarium of South Australia  Adelaide South Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James B.","family":"Dorey","sequence":"additional","affiliation":[{"name":"Environmental Futures Research Centre, School of Science University of Wollongong  Wollongong New South Wales Australia"},{"name":"Molecular Horizons Research Institute, School of Science University of Wollongong  Wollongong New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Colette","family":"Blyth","sequence":"additional","affiliation":[{"name":"School of Biological Sciences Adelaide University  Adelaide South Australia Australia"},{"name":"Environment Institute Adelaide University  Adelaide South Australia Australia"},{"name":"Institute of Silviculture University of Natural Resources and Life Sciences (BOKU)  Vienna Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,10]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1098\/rstb.2013.0346"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0169-5347(01)02290-X"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11295\u2010015\u20100896\u20104"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.3390\/d12080299"},{"issue":"3","key":"e_1_2_12_6_1","first-page":"36","article-title":"Rarity and Threat in Relation to the Conservation of Acacia in Western Australia","volume":"4","author":"Buist M. 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R.Fran\u00e7ois L.Henry K.M\u00fcller andD.Vaughan.2025.\u201cdplyr: A Grammar of Data Manipulation.\u201d R Package Version 1.1.4."},{"key":"e_1_2_12_61_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.biocon.2019.108261"}],"container-title":["Ecology and Evolution"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ece3.73959","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/ece3.73959","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ece3.73959","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T09:14:14Z","timestamp":1787217254000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/ece3.73959"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,7]]},"references-count":60,"journal-issue":{"issue":"7","published-print":{"date-parts":[[2026,7]]}},"alternative-id":["10.1002\/ece3.73959"],"URL":"https:\/\/doi.org\/10.1002\/ece3.73959","archive":["Portico"],"relation":{},"ISSN":["2045-7758","2045-7758"],"issn-type":[{"value":"2045-7758","type":"print"},{"value":"2045-7758","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,7]]},"assertion":[{"value":"2026-04-30","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-06-24","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-07-10","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e73959"}}