{"id":563,"date":"2019-02-05T17:15:29","date_gmt":"2019-02-05T22:15:29","guid":{"rendered":"http:\/\/site.caes.uga.edu\/envirotron\/?page_id=563"},"modified":"2025-01-30T14:22:11","modified_gmt":"2025-01-30T19:22:11","slug":"collaborative-research-soil-respiration","status":"publish","type":"page","link":"https:\/\/site.caes.uga.edu\/envirotron\/collaborative-research-soil-respiration\/","title":{"rendered":"Collaborative Research: Soil Respiration"},"content":{"rendered":"\n<p><strong>Soil Microbial Respiration Measurement Deploying Non-Steady-State Chambers Integrated Into Conviron Growth Chambers<\/strong><\/p>\n\n\n\n<p><em>Nosir Shukurov (Fulbright Visiting Scientist from Institute of Geology and Geophysics, Uzbekistan),&nbsp;<\/em><em>Viktor Tishchenko (Griffin, University of Georgia)&nbsp;<\/em><\/p>\n\n\n\n<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:46% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/site.caes.uga.edu\/envirotron\/files\/2018\/08\/IMG_1464-1024x768.jpg\" alt=\"\" class=\"wp-image-502 size-full\" srcset=\"https:\/\/site.caes.uga.edu\/envirotron\/files\/2018\/08\/IMG_1464-1024x768.jpg 1024w, https:\/\/site.caes.uga.edu\/envirotron\/files\/2018\/08\/IMG_1464-300x225.jpg 300w, https:\/\/site.caes.uga.edu\/envirotron\/files\/2018\/08\/IMG_1464-768x576.jpg 768w, https:\/\/site.caes.uga.edu\/envirotron\/files\/2018\/08\/IMG_1464-184x138.jpg 184w, https:\/\/site.caes.uga.edu\/envirotron\/files\/2018\/08\/IMG_1464.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>Soil basal respiration measurement is widely used in studies of soil C cycling, net crop photosynthesis estimations, overall soil biological\u00a0activity estimations, heterotrophic microbiological activity studies etc. Chamber technique can be adapted to a wide range of experimental objectives and commonly used approach in soil respiration estimations. In order to efficiently and economically measure soil respiration in large number of samples over extended incubation period, we chose non-steady-state chamber design (static system) that allowed us to integrate Vaisala GMP 222 carbon dioxide probe (widely used in Conviron chambers) <\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n<p>into small-volume soil respiration chamber and perform real-time CO<sub>2<\/sub> measurement under controlled environment conditions (PGW36 Conviron chamber).  Time-dependent CO<sub>2 <\/sub>diffusion error was reduced by adding ventilation inside the respiration chamber (resembling flow-through chamber type), taking measurements at constant chamber deployment intervals, and increasing soil sample surface area. Based on continuous CO<sub>2<\/sub> concentration measurements (18 second interval), the rate of CO<sub>2<\/sub> accumulation (\u0394C\/\u0394T) was estimated from the slope of the linear regression line. Experimental trial in the Calcisol soil sample showed initial two-fold increase in the respiration rate during the first 3-4 days of incubation and then gradually decreased for 3 weeks.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.controlledenvironments.org\/wp-content\/uploads\/sites\/6\/2018\/06\/georhor_2018.pdf\">Presented at the 2018 NCERA-101 annual meeting.<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Soil Microbial Respiration Measurement Deploying Non-Steady-State Chambers Integrated Into Conviron Growth Chambers Nosir Shukurov (Fulbright Visiting Scientist from Institute of Geology and Geophysics, Uzbekistan),&nbsp;Viktor Tishchenko (Griffin, University of Georgia)&nbsp; Soil basal respiration measurement is widely used in studies of soil C cycling, net crop photosynthesis estimations, overall soil biological\u00a0activity estimations, heterotrophic microbiological activity studies etc. [&hellip;]<\/p>\n","protected":false},"author":426,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-563","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/site.caes.uga.edu\/envirotron\/wp-json\/wp\/v2\/pages\/563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.caes.uga.edu\/envirotron\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/site.caes.uga.edu\/envirotron\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/site.caes.uga.edu\/envirotron\/wp-json\/wp\/v2\/users\/426"}],"replies":[{"embeddable":true,"href":"https:\/\/site.caes.uga.edu\/envirotron\/wp-json\/wp\/v2\/comments?post=563"}],"version-history":[{"count":9,"href":"https:\/\/site.caes.uga.edu\/envirotron\/wp-json\/wp\/v2\/pages\/563\/revisions"}],"predecessor-version":[{"id":1076,"href":"https:\/\/site.caes.uga.edu\/envirotron\/wp-json\/wp\/v2\/pages\/563\/revisions\/1076"}],"wp:attachment":[{"href":"https:\/\/site.caes.uga.edu\/envirotron\/wp-json\/wp\/v2\/media?parent=563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}