{"id":68,"date":"2022-02-10T09:46:00","date_gmt":"2022-02-10T07:46:00","guid":{"rendered":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/?page_id=68"},"modified":"2024-03-20T13:52:48","modified_gmt":"2024-03-20T11:52:48","slug":"arcticfire","status":"publish","type":"page","link":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/","title":{"rendered":"ArcticFire"},"content":{"rendered":"\n<p>The project\u00a0<strong>\u201cLong-term effects of fire on carbon and nitrogen pools and fluxes in the arctic permafrost and subarctic forests\u201d,\u00a0<\/strong>(2015 \u2013 2018) is funded by the\u00a0<a href=\"http:\/\/www.aka.fi\/en\">Academy of Finland<\/a>\u00a0under the Arctic Research Programme (<a href=\"http:\/\/www.aka.fi\/en\/research-and-science-policy\/academy-programmes\/current-programmes\/arctic-academy-programme\/\">ARKTIKO<\/a>).<\/p>\n\n\n\n<p>Permafrost melting threatens to release vast amounts of carbon into the atmosphere, but exact interactions between ecosystem disturbances, permafrost melting, soil organic matter (SOM) decomposition and vegetation productivity are not known. The acceleration of biological processes such as decomposition and below-ground carbon input and carbon allocation of trees and associated priming effects following forest fires in the Arctic region may lead to large changes in CO<sub>2<\/sub>, CH<sub>4<\/sub>\u00a0and N<sub>2<\/sub>O fluxes. These processes evidently alter the C and N turnover rate of the remaining SOM, which may ultimately affect the net primary production (NPP) of the forest ecosystem causing feedback mechanisms to carbon uptake and eventually atmospheric CO<sub>2<\/sub> concentration.<\/p>\n\n\n\n<p>AIMS<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>We will study how the forest fires affect the biologically active layer on top of the permafrost by measuring biogeochemical properties of the soil e.g. soil carbon and nitrogen content, microbial species composition as well as greenhouse gas fluxes.<\/li>\n\n\n\n<li>We will also measure the changes in soil surface reflectance and the depth of the permafrost layer<\/li>\n\n\n\n<li>Finally, we will combine the measured data for developing and parameterizing process-based ecosystem models to predict the effect of forest fires on forest carbon and nitrogen dynamics in the Arctic.<\/li>\n<\/ol>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"964\" height=\"656\" src=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/Arcticfire1.jpg\" alt=\"\" class=\"wp-image-102 size-full\" srcset=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/Arcticfire1.jpg 964w, https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/Arcticfire1-300x204.jpg 300w, https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/Arcticfire1-768x523.jpg 768w\" sizes=\"auto, (max-width: 964px) 100vw, 964px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>Figure: Schematic presentation of the changes taking place in the permafrost layer and the research approach used in the study.<\/p>\n<\/div><\/div>\n\n\n\n<p><\/p>\n\n\n\n<p>METHODS<\/p>\n\n\n\n<p>The project will be based on intensive field measurement campaigns which will be carried out in arctic forests in\u00a0<strong>Northern Yukon Canada<\/strong>, in\u00a0<strong>Tura in Central Siberia<\/strong>\u00a0and i<strong>n V\u00e4rri\u00f6 in Finish Lapland<\/strong>.\u00a0The campaigns will be carried out in forests at different times since the last fire.<\/p>\n\n\n\n<p>For today we have conducted two measurement campaigns (in 2015 in Yukon and Northwest territories in Canada and in 2016 in Tura in Central Siberia). In both campaigns, we took samples for soil chemical fractionation and for determining soil organic matter decomposition and turnover rate of carbon in the soil. We also measured greenhouse gas fluxes (CO<sub>2<\/sub>, CH<sub>4<\/sub> and N<sub>2<\/sub>O) and in 2016 Biogenic Volatile Organic Compounds (BVOCs) from soil surface. Our first results from Canada show that forest fires increased the active layer depth and greenhouse gas emissions and the effects of fire lasted for several decades. Time since the last fire is the main factor affecting soil greenhouse gas fluxes. Generally, soils were sources of CO2 and N2O and sinks for CH4. \u00a0Soil temperature affected the uptake of CH4, and the N2O fluxes were influenced by the nitrogen and carbon content of the soil and the active layer depth. \u00a0The first results have been recently published in <em>K\u00f6ster et al<\/em>. (2017) Science of the Total Environment 601-602: 895-905.<\/p>\n\n\n\n<p>In 2016-2017, we also conducted laboratory incubations, soil organic matter fractionations and analyses of microbial biomasses for the soils collected from Canada in 2015. The preliminary results show that the temperature response of soil organic matter decomposition is also affected by soil depth and the time since the last fire which also has implications to the CO<sub>2<\/sub> emitted from the soil. Thus, the fires really seem to have an impact on the decomposition of permafrost carbon reservoir. Also, our preliminary results show that forest fires affect the availability of soluble nutrients and microbial biomass, and these effects last for a long time after fire.<\/p>\n\n\n\n<p>Currently, we are analyzing the effects of forest fires in the Canadian soil on the microbial species composition and functional genes using next generation sequencing and functional gene arrays. These analyses will help us to link the changes in biogeochemical processes to changes microbial population after fire, and enable more detailed process-based analyses on the effects of fire on greenhouse gas fluxes and soil organic matter decomposition.<\/p>\n\n\n\n<p><strong>Northern Yukon, Canada<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"258\" height=\"388\" src=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-C1.jpg\" alt=\"\" class=\"wp-image-105\" srcset=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-C1.jpg 258w, https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-C1-199x300.jpg 199w\" sizes=\"auto, (max-width: 258px) 100vw, 258px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"257\" height=\"388\" src=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-C2.jpg\" alt=\"\" class=\"wp-image-108\" srcset=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-C2.jpg 257w, https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-C2-199x300.jpg 199w\" sizes=\"auto, (max-width: 257px) 100vw, 257px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Tura, Central Siberia, Russia<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"257\" height=\"387\" src=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-R1.jpg\" alt=\"\" class=\"wp-image-120\" srcset=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-R1.jpg 257w, https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-R1-199x300.jpg 199w\" sizes=\"auto, (max-width: 257px) 100vw, 257px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"258\" height=\"389\" src=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-R2.jpg\" alt=\"\" class=\"wp-image-123\" srcset=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-R2.jpg 258w, https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-R2-199x300.jpg 199w\" sizes=\"auto, (max-width: 258px) 100vw, 258px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"257\" height=\"387\" src=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-R3.jpg\" alt=\"\" class=\"wp-image-126\" srcset=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-R3.jpg 257w, https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/ARCTICFIRE-areas-R3-199x300.jpg 199w\" sizes=\"auto, (max-width: 257px) 100vw, 257px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p>Principal investigator: Prof. Jukka Pumpanen (University of Eastern Finland)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The project\u00a0\u201cLong-term effects of fire on carbon and nitrogen pools and fluxes in the arctic permafrost and subarctic forests\u201d,\u00a0(2015 \u2013 2018) is funded by the\u00a0Academy of Finland\u00a0under the Arctic Research Programme (ARKTIKO). Permafrost melting threatens to release vast amounts of carbon into the atmosphere, but exact interactions between ecosystem disturbances, permafrost melting, soil organic matter [&hellip;]<\/p>\n","protected":false},"author":535,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-68","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ArcticFire - Disturbances and Biogeochemistry for Ecosystem Services<\/title>\n<meta name=\"description\" content=\"The project\u00a0\u201cLong term effects of fire on carbon and nitrogen pools and fluxes in the arctic permafrost and subarctic forests\u201d,\u00a0(2015 \u2013 2018) is funded by the\u00a0Academy of Finland\u00a0under the Arctic Research Programme (ARKTIKO).Permafrost melting threatens to release vast amounts of carbon to the atmosphere, but exact interactions between ecosystem disturbances, permafrost melting, soil organic matter (SOM) decomposition and vegetation productivity are not known. The acceleration of biological processes such as decomposition and below ground carbon input and carbon allocation of trees and associated priming effects following forest fires in the arctic region may lead to large changes in CO2, CH4\u00a0and N2O fluxes. These processes evidently alter the C and N turnover rate of the remaining SOM, which may ultimately affect the net primary production (NPP) of the forest ecosystem causing feedback mechanisms to carbon uptake and eventually atmospheric CO2 concentration.AIMSWe will study how the forest fires affect the biologically active layer on top of the permafrost by measuring biogeochemical properties of the soil e.g. soil carbon and nitrogen content, microbial species composition as well as greenhouse gas fluxes.We will also measure the changes in soil surface reflectance and the depth of the permafrost layerFinally, we will combine the measured data for developing and parameterizing process based ecosystem models to predict the effect of forest fires on forest carbon and nitrogen dynamics in the arctic.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ArcticFire - Disturbances and Biogeochemistry for Ecosystem Services\" \/>\n<meta property=\"og:description\" content=\"The project\u00a0\u201cLong term effects of fire on carbon and nitrogen pools and fluxes in the arctic permafrost and subarctic forests\u201d,\u00a0(2015 \u2013 2018) is funded by the\u00a0Academy of Finland\u00a0under the Arctic Research Programme (ARKTIKO).Permafrost melting threatens to release vast amounts of carbon to the atmosphere, but exact interactions between ecosystem disturbances, permafrost melting, soil organic matter (SOM) decomposition and vegetation productivity are not known. The acceleration of biological processes such as decomposition and below ground carbon input and carbon allocation of trees and associated priming effects following forest fires in the arctic region may lead to large changes in CO2, CH4\u00a0and N2O fluxes. These processes evidently alter the C and N turnover rate of the remaining SOM, which may ultimately affect the net primary production (NPP) of the forest ecosystem causing feedback mechanisms to carbon uptake and eventually atmospheric CO2 concentration.AIMSWe will study how the forest fires affect the biologically active layer on top of the permafrost by measuring biogeochemical properties of the soil e.g. soil carbon and nitrogen content, microbial species composition as well as greenhouse gas fluxes.We will also measure the changes in soil surface reflectance and the depth of the permafrost layerFinally, we will combine the measured data for developing and parameterizing process based ecosystem models to predict the effect of forest fires on forest carbon and nitrogen dynamics in the arctic.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/\" \/>\n<meta property=\"og:site_name\" content=\"Disturbances and Biogeochemistry for Ecosystem Services\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-20T11:52:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/Arcticfire1.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/arcticfire\\\/\",\"url\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/arcticfire\\\/\",\"name\":\"ArcticFire - Disturbances and Biogeochemistry for Ecosystem Services\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/arcticfire\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/arcticfire\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/wp-content\\\/uploads\\\/sites\\\/178\\\/2022\\\/02\\\/Arcticfire1.jpg\",\"datePublished\":\"2022-02-10T07:46:00+00:00\",\"dateModified\":\"2024-03-20T11:52:48+00:00\",\"description\":\"The project\u00a0\u201cLong term effects of fire on carbon and nitrogen pools and fluxes in the arctic permafrost and subarctic forests\u201d,\u00a0(2015 \u2013 2018) is funded by the\u00a0Academy of Finland\u00a0under the Arctic Research Programme (ARKTIKO).Permafrost melting threatens to release vast amounts of carbon to the atmosphere, but exact interactions between ecosystem disturbances, permafrost melting, soil organic matter (SOM) decomposition and vegetation productivity are not known. 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These processes evidently alter the C and N turnover rate of the remaining SOM, which may ultimately affect the net primary production (NPP) of the forest ecosystem causing feedback mechanisms to carbon uptake and eventually atmospheric CO2 concentration.AIMSWe will study how the forest fires affect the biologically active layer on top of the permafrost by measuring biogeochemical properties of the soil e.g. soil carbon and nitrogen content, microbial species composition as well as greenhouse gas fluxes.We will also measure the changes in soil surface reflectance and the depth of the permafrost layerFinally, we will combine the measured data for developing and parameterizing process based ecosystem models to predict the effect of forest fires on forest carbon and nitrogen dynamics in the arctic.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/arcticfire\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/arcticfire\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/arcticfire\\\/#primaryimage\",\"url\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/wp-content\\\/uploads\\\/sites\\\/178\\\/2022\\\/02\\\/Arcticfire1.jpg\",\"contentUrl\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/wp-content\\\/uploads\\\/sites\\\/178\\\/2022\\\/02\\\/Arcticfire1.jpg\",\"width\":964,\"height\":656},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/arcticfire\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"ArcticFire\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/#website\",\"url\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/\",\"name\":\"Disturbances and Biogeochemistry for Ecosystem Services\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/blogs.uef.fi\\\/disturbances-and-biogeochemistry\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"ArcticFire - Disturbances and Biogeochemistry for Ecosystem Services","description":"The project\u00a0\u201cLong term effects of fire on carbon and nitrogen pools and fluxes in the arctic permafrost and subarctic forests\u201d,\u00a0(2015 \u2013 2018) is funded by the\u00a0Academy of Finland\u00a0under the Arctic Research Programme (ARKTIKO).Permafrost melting threatens to release vast amounts of carbon to the atmosphere, but exact interactions between ecosystem disturbances, permafrost melting, soil organic matter (SOM) decomposition and vegetation productivity are not known. 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These processes evidently alter the C and N turnover rate of the remaining SOM, which may ultimately affect the net primary production (NPP) of the forest ecosystem causing feedback mechanisms to carbon uptake and eventually atmospheric CO2 concentration.AIMSWe will study how the forest fires affect the biologically active layer on top of the permafrost by measuring biogeochemical properties of the soil e.g. soil carbon and nitrogen content, microbial species composition as well as greenhouse gas fluxes.We will also measure the changes in soil surface reflectance and the depth of the permafrost layerFinally, we will combine the measured data for developing and parameterizing process based ecosystem models to predict the effect of forest fires on forest carbon and nitrogen dynamics in the arctic.","og_url":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/","og_site_name":"Disturbances and Biogeochemistry for Ecosystem Services","article_modified_time":"2024-03-20T11:52:48+00:00","og_image":[{"url":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/Arcticfire1.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/","url":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/","name":"ArcticFire - Disturbances and Biogeochemistry for Ecosystem Services","isPartOf":{"@id":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/#website"},"primaryImageOfPage":{"@id":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/#primaryimage"},"image":{"@id":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/#primaryimage"},"thumbnailUrl":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/Arcticfire1.jpg","datePublished":"2022-02-10T07:46:00+00:00","dateModified":"2024-03-20T11:52:48+00:00","description":"The project\u00a0\u201cLong term effects of fire on carbon and nitrogen pools and fluxes in the arctic permafrost and subarctic forests\u201d,\u00a0(2015 \u2013 2018) is funded by the\u00a0Academy of Finland\u00a0under the Arctic Research Programme (ARKTIKO).Permafrost melting threatens to release vast amounts of carbon to the atmosphere, but exact interactions between ecosystem disturbances, permafrost melting, soil organic matter (SOM) decomposition and vegetation productivity are not known. The acceleration of biological processes such as decomposition and below ground carbon input and carbon allocation of trees and associated priming effects following forest fires in the arctic region may lead to large changes in CO2, CH4\u00a0and N2O fluxes. These processes evidently alter the C and N turnover rate of the remaining SOM, which may ultimately affect the net primary production (NPP) of the forest ecosystem causing feedback mechanisms to carbon uptake and eventually atmospheric CO2 concentration.AIMSWe will study how the forest fires affect the biologically active layer on top of the permafrost by measuring biogeochemical properties of the soil e.g. soil carbon and nitrogen content, microbial species composition as well as greenhouse gas fluxes.We will also measure the changes in soil surface reflectance and the depth of the permafrost layerFinally, we will combine the measured data for developing and parameterizing process based ecosystem models to predict the effect of forest fires on forest carbon and nitrogen dynamics in the arctic.","breadcrumb":{"@id":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/#primaryimage","url":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/Arcticfire1.jpg","contentUrl":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-content\/uploads\/sites\/178\/2022\/02\/Arcticfire1.jpg","width":964,"height":656},{"@type":"BreadcrumbList","@id":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/arcticfire\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/"},{"@type":"ListItem","position":2,"name":"ArcticFire"}]},{"@type":"WebSite","@id":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/#website","url":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/","name":"Disturbances and Biogeochemistry for Ecosystem Services","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-json\/wp\/v2\/pages\/68","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-json\/wp\/v2\/users\/535"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-json\/wp\/v2\/comments?post=68"}],"version-history":[{"count":2,"href":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-json\/wp\/v2\/pages\/68\/revisions"}],"predecessor-version":[{"id":761,"href":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-json\/wp\/v2\/pages\/68\/revisions\/761"}],"wp:attachment":[{"href":"https:\/\/blogs.uef.fi\/disturbances-and-biogeochemistry\/wp-json\/wp\/v2\/media?parent=68"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}