{"id":166889,"date":"2024-08-28T10:30:30","date_gmt":"2024-08-28T08:30:30","guid":{"rendered":"https:\/\/uniavisen.dk\/de-troede-den-var-uddoed-bi-set-for-foerste-gang-siden-1973\/"},"modified":"2024-09-09T09:01:52","modified_gmt":"2024-09-09T07:01:52","slug":"they-thought-it-was-extinct-bee-seen-for-the-first-time-since-1973","status":"publish","type":"post","link":"https:\/\/uniavisen.dk\/en\/they-thought-it-was-extinct-bee-seen-for-the-first-time-since-1973\/","title":{"rendered":"They thought it was extinct: Bee seen for the first time since 1973"},"content":{"rendered":"

University of Copenhagen scientists have found 127 of a total of 296 species of bees in Denmark in the research project, Grazing4diversity<\/a><\/em>. Some of them are very rare.<\/p>\n

This applies, for example, to the halictus leucaheneus, which was last seen on the R\u00f8sn\u00e6s peninsula in 1973, and the rare and critically endangered species of bee Lasioglossum Aeratum that Grazing4diversity has spotted for the first time off the island of Bornholm, namely near Vordingborg and on the R\u00f8sn\u00e6s peninsula on Zealand.<\/p>\n

One of the researchers from Grazing4diversity is bee expert Hjalte Carlberg Ro-Poulsen, a postdoc at the Department of Geosciences and Natural Resource Management.<\/p>\n

He explains that the bees were found in two collection events in July 2021 and May 2022, because there is a big difference between the species that can be found in May and in July, and that is why the researchers were in the field on two occasions. The greatest diversity and bee numbers are to be found in July, and this is when the halictus leucaheneus appeared.<\/p>\n

Coloured plastic plates<\/h3>\n

The researchers had 169 sample venues in 42 locations in Denmark. They worked in teams of three to four people in order to be able to collect at all the sample venues at roughly the same time.<\/p>\n

Different types of traps were used, and the majority of the bees were caught with so-called pan traps.
\n
\nA pan trap consists of three plastic plates \u2013 one white, one yellow and one blue \u2013 filled with liquid. The colours attract the insects, who think it is a flower, and when they land, they fall into the liquid.<\/p>\n

The halictus leucaheneus was found in a sweep sample, namely the contents of an insect net that the researchers use to flap at the vegetation for ten minutes.<\/p>\n

Grazing cattle and horses<\/h3>\n

The researchers got the halictus leucaheneus into the trap at a military exercise area near J\u00e6gerspris in North Zealand. The discovery is important because the species is not only extremely rare in Denmark, but is also red-listed as a vulnerable species in the rest of Europe.<\/p>\n

According to Hjalte Carlberg Ro-Poulsen, it would soon have been declared nationally extinct if it were not for Grazing4diversity.<\/p>\n

According to a press release from UCPH<\/a><\/em>, the bee scientists have a strong presumption that the best way to give nature back to the bees is to let cattle and horses graze all year round, because they contribute important processes to the natural ecosystem.<\/p>\n

This method requires a minimum of human interference.
\n<\/p>\n","protected":false},"excerpt":{"rendered":"

Bee experts from the University of Copenhagen have rediscovered an endangered bee at a military exercise site in the north of the Danish island of Zealand.<\/p>\n","protected":false},"author":8,"featured_media":166702,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[46],"tags":[],"class_list":["post-166889","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science","expression-news_article"],"acf":[],"aioseo_notices":[],"yoast_head":"\nThey thought it was extinct: Bee seen for the first time since 1973 \u2014 University Post<\/title>\n<meta name=\"description\" content=\"Bee experts from the 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","name":"halictus-leucaheneu_f","status":"inherit","uploaded_to":166692,"date":"2024-08-27 07:57:56","modified":"2025-10-16 08:49:56","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/uniavisen.dk\/wp-includes\/images\/media\/default.png","width":1394,"height":932,"sizes":{"thumbnail":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f-150x150.jpg","thumbnail-width":150,"thumbnail-height":150,"medium":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f-480x321.jpg","medium-width":480,"medium-height":321,"medium_large":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f-768x513.jpg","medium_large-width":768,"medium_large-height":513,"large":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f-1280x856.jpg","large-width":1280,"large-height":856,"1536x1536":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f.jpg","1536x1536-width":1394,"1536x1536-height":932,"2048x2048":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f.jpg","2048x2048-width":1394,"2048x2048-height":932,"featured-soft":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f-290x194.jpg","featured-soft-width":290,"featured-soft-height":194,"featured-hard":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f-290x180.jpg","featured-hard-width":290,"featured-hard-height":180,"narrow":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f-700x468.jpg","narrow-width":700,"narrow-height":468,"extended":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f-990x662.jpg","extended-width":990,"extended-height":662}},"style":"extended","text_placement":"metadata-below","image_link_url":"","image_link_title":"","caption_prefix":"","enable_alternative_caption":true,"alternative_caption":"The bee species halictus leucaheneus is small and with a metallic glisten and can easily be confused with other bees. Here you can see a female specimen."},{"acf_fc_layout":"Standfirst","subject":"Bee counting","text":"Bieksperter fra K\u00f8benhavns Universitet har genfundet en s\u00e5rbar bi p\u00e5 et milit\u00e6rt \u00f8velsesomr\u00e5de i Nordsj\u00e6lland. Samtidig har de fundet en r\u00e6kke andre af Danmarks sj\u00e6ldne bier.","use_post_excerpt":true},{"acf_fc_layout":"Byline","is_author":true,"contributors":false},{"acf_fc_layout":"Content","content":"<p>University of Copenhagen scientists have found 127 of a total of 296 species of bees in Denmark in the research project<em><a href=\"https:\/\/ign.ku.dk\/grazing4diversity\/\">, Grazing4diversity<\/a><\/em>. Some of them are very rare.<\/p>\n<p>This applies, for example, to the halictus leucaheneus, which was last seen on the R\u00f8sn\u00e6s peninsula in 1973, and the rare and critically endangered species of bee Lasioglossum Aeratum that Grazing4diversity has spotted for the first time off the island of Bornholm, namely near Vordingborg and on the R\u00f8sn\u00e6s peninsula on Zealand.<\/p>\n<p>One of the researchers from Grazing4diversity is bee expert Hjalte Carlberg Ro-Poulsen, a postdoc at the Department of Geosciences and Natural Resource Management.<\/p>\n<p>He explains that the bees were found in two collection events in July 2021 and May 2022, because there is a big difference between the species that can be found in May and in July, and that is why the researchers were in the field on two occasions. The greatest diversity and bee numbers are to be found in July, and this is when the halictus leucaheneus appeared.<\/p>\n<h3>Coloured plastic plates<\/h3>\n<p>The researchers had 169 sample venues in 42 locations in Denmark. They worked in teams of three to four people in order to be able to collect at all the sample venues at roughly the same time.<\/p>\n<p>Different types of traps were used, and the majority of the bees were caught with so-called pan traps.<\/p>\n"},{"acf_fc_layout":"Image","image":{"ID":166708,"id":166708,"title":"No set for f\u00f8rste gang siden 1973 - pan trap-f\u00e6lde til bier, pr\u00f8ver","filename":"img_20210715_151833.jpg","filesize":928002,"url":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833.jpg","link":"https:\/\/uniavisen.dk\/en\/de-troede-den-var-uddoed-bi-set-for-foerste-gang-siden-1973\/img_20210715_151833\/","alt":"","author":"8","description":"","caption":"En s\u00e5kaldt pan trap-f\u00e6lde til bier omhegnet af et st\u00e5lgitter for at beskytte pr\u00f8verne.","name":"img_20210715_151833","status":"inherit","uploaded_to":166692,"date":"2024-08-27 09:15:54","modified":"2025-10-16 08:48:12","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/uniavisen.dk\/wp-includes\/images\/media\/default.png","width":2400,"height":1641,"sizes":{"thumbnail":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-150x150.jpg","thumbnail-width":150,"thumbnail-height":150,"medium":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-480x328.jpg","medium-width":480,"medium-height":328,"medium_large":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-768x525.jpg","medium_large-width":768,"medium_large-height":525,"large":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-1280x875.jpg","large-width":1280,"large-height":875,"1536x1536":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-1536x1050.jpg","1536x1536-width":1536,"1536x1536-height":1050,"2048x2048":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-2048x1400.jpg","2048x2048-width":2048,"2048x2048-height":1400,"featured-soft":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-290x198.jpg","featured-soft-width":290,"featured-soft-height":198,"featured-hard":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-290x180.jpg","featured-hard-width":290,"featured-hard-height":180,"narrow":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-700x479.jpg","narrow-width":700,"narrow-height":479,"extended":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/img_20210715_151833-990x677.jpg","extended-width":990,"extended-height":677}},"style":"narrow","text_placement":"metadata-below","image_link_url":"","image_link_title":"","caption_prefix":"","enable_alternative_caption":true,"alternative_caption":"A so-called pan trap for bees fenced by a steel grid to protect the samples."},{"acf_fc_layout":"Content","content":"<p>A pan trap consists of three plastic plates \u2013 one white, one yellow and one blue \u2013 filled with liquid. The colours attract the insects, who think it is a flower, and when they land, they fall into the liquid.<\/p>\n<p>The halictus leucaheneus was found in a sweep sample, namely the contents of an insect net that the researchers use to flap at the vegetation for ten minutes.<\/p>\n<h3>Grazing cattle and horses<\/h3>\n<p>The researchers got the halictus leucaheneus into the trap at a military exercise area near J\u00e6gerspris in North Zealand. The discovery is important because the species is not only extremely rare in Denmark, but is also red-listed as a vulnerable species in the rest of Europe.<\/p>\n<p>According to Hjalte Carlberg Ro-Poulsen, it would soon have been declared nationally extinct if it were not for Grazing4diversity.<\/p>\n<p>According to a <em><a href=\"https:\/\/science.ku.dk\/presse\/nyheder\/2024\/naesten-erklaeret-uddoed-yderst-sjaelden-bi-genopdaget-efter-50-aar\/\">press release from UCPH<\/a><\/em>, the bee scientists have a strong presumption that the best way to give nature back to the bees is to let cattle and horses graze all year round, because they contribute important processes to the natural ecosystem.<\/p>\n<p>This method requires a minimum of human interference.<\/p>\n"},{"acf_fc_layout":"ArticleEnd"},{"acf_fc_layout":"Newsletter","lang_select":"en","identifier":"Newsletter","headline":"Get an email with our top stories","button_text":"Sign up here","class":""},{"acf_fc_layout":"OtherStories","headline":"","hand_picked_posts":false,"references":false,"category":false,"theme":false,"number_of_posts":"4","style":"default"}]},"taxonomyData":{"category":[{"term_id":46,"name":"Science","slug":"science","term_group":0,"term_taxonomy_id":46,"taxonomy":"category","description":"","parent":0,"count":831,"filter":"raw"}],"post_tag":[],"post_format":[],"expression":[{"term_id":15,"name":"News Article","slug":"news_article","term_group":0,"term_taxonomy_id":15,"taxonomy":"expression","description":"","parent":0,"count":11489,"filter":"raw"}],"translation_priority":[{"term_id":5468,"name":"Optional","slug":"optional-en","term_group":0,"term_taxonomy_id":5468,"taxonomy":"translation_priority","description":"","parent":0,"count":672,"filter":"raw"}]},"featured_media_url":"https:\/\/uniavisen.dk\/wp-content\/uploads\/2024\/08\/halictusleucaheneu_f_facebook-1280x563.jpg","_links":{"self":[{"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/posts\/166889","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/comments?post=166889"}],"version-history":[{"count":4,"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/posts\/166889\/revisions"}],"predecessor-version":[{"id":166893,"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/posts\/166889\/revisions\/166893"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/media\/166702"}],"wp:attachment":[{"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/media?parent=166889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/categories?post=166889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/uniavisen.dk\/en\/wp-json\/wp\/v2\/tags?post=166889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}