{"id":295,"date":"2024-05-29T16:15:48","date_gmt":"2024-05-29T16:15:48","guid":{"rendered":"https:\/\/nordborn.lbhi.is\/?p=295"},"modified":"2024-05-29T20:44:07","modified_gmt":"2024-05-29T20:44:07","slug":"high-resolution-simulations-reveal-a-large-loss-of-fennoscandian-tundra","status":"publish","type":"post","link":"https:\/\/nordborn.lbhi.is\/?p=295","title":{"rendered":"High-resolution simulations reveal a large loss of Fennoscandian tundra"},"content":{"rendered":"\n

We used the high-emission RCP8.5 scenario to study vegetation dynamics in Northern Fenoscandia with focus on a few biodiversity hotspots. The projections show substantial borealization of Fennoscandian vegetation by the century’s end. Evergreen trees will increasingly be replaced by broadleaf and mixed forests in southern mountain areas like Fulufj\u00e4llet and forest areas such as Muddus and Bj\u00f6rnlandet. Rapid tree growth in southern tundra hotspots will also significantly reduce tundra areas, particularly in Helagsfj\u00e4llen and Vindelnfj\u00e4llen. A notable reduction in landscape diversity is expected in Helagsfj\u00e4llen and Vindelnfj\u00e4llen, as shown by a decrease in the Shannon diversity index, where tundra will be dominated by needleleaf evergreen shrubs, with minimal sedge tundra remaining. Major tundra areas around 68.5\u00b0 N and the Finnmarksvidda plateau will see decreases inopen tundra vegetation and increases in shrubs. Abisko is projected to retain large areas of alpine vegetation at higher elevations, despite undergoing shrubification and an upward shift in the broadleaf forest treeline.<\/p>\n\n\n\n

We also developed a reindeer grazing component in LPJ-GUESS showing that potential reindeer consumption will rise in summer grazing grounds north of 65.5\u00b0 N. Winter trends remain weak due to challenges in accurately representing winter forage like lichens. Reindeer herding will face new challenges such as hot and dry summers, frequent freeze-thaw cycles, and denser forests. Effective management requires understanding trophic interactions and the impacts of extreme weather beyond vegetation state alone. Conifer-dominated forestry faces challenges from moose grazing and diseases, favoring broadleaf forest spread. Revising red-list and threatened species categories is necessary due to increased vulnerability of tundra species under warming.<\/p>\n\n\n\n

Reference: <\/strong>Lagergren, F., Bj\u00f6rk, R. G., Andersson, C., Belu\u0161i\u0107, D., Bj\u00f6rkman, M. P., Kjellstr\u00f6m, E., Lind, P., Lindstedt, D., Olenius, T., Pleijel, H., Rosqvist, G., and Miller, P. A. (2024) Kilometre-scale simulations over Fennoscandia reveal a large loss of tundra due to climate warming. Biogeosciences<\/em>, 21, 1093\u20131116. https:\/\/doi.org\/10.5194\/bg-21-1093-2024<\/a><\/p>\n\n\n\n

\n\n\n\n

Text and image by: Robert Bj\u00f6rk and Fredrik Lagergren.<\/p>\n","protected":false},"excerpt":{"rendered":"

We used the high-emission RCP8.5 scenario to study vegetation dynamics in Northern Fenoscandia with focus on a few biodiversity hotspots. The projections show substantial borealization of Fennoscandian vegetation by the century’s end. Evergreen trees will increasingly be replaced by broadleaf and mixed forests in southern mountain areas like Fulufj\u00e4llet and forest areas such as Muddus and … <\/p>\n

Continue reading “High-resolution simulations reveal a large loss of Fennoscandian tundra”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":296,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-295","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publications"],"yoast_head":"\nHigh-resolution simulations reveal a large loss of Fennoscandian tundra - The Nordic Borealization Network<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nordborn.lbhi.is\/?p=295\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"High-resolution simulations reveal a large loss of Fennoscandian tundra - The Nordic Borealization Network\" \/>\n<meta property=\"og:description\" content=\"We used the high-emission RCP8.5 scenario to study vegetation dynamics in Northern Fenoscandia with focus on a few biodiversity hotspots. 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