{"id":3594,"date":"2025-12-25T16:43:43","date_gmt":"2025-12-25T08:43:43","guid":{"rendered":"http:\/\/seminar.xtbg.ac.cn\/?p=3594"},"modified":"2025-12-25T16:43:45","modified_gmt":"2025-12-25T08:43:45","slug":"carbon-dynamics-of-tropical-peatlands-seasonality-with-no-seasons","status":"publish","type":"post","link":"http:\/\/seminar.xtbg.ac.cn\/?p=3594","title":{"rendered":"Carbon Dynamics of Tropical Peatlands \u2014 Seasonality With No Seasons"},"content":{"rendered":"\n<h2>Abstract:<\/h2>\n\n\n\n<p>Tropical mountain peatlands are long-term carbon stores that regulate water and greenhouse-gas exchange in high-elevation landscapes, yet their sensitivity across time scales remains poorly quantified. We combined two years of ecosystem-scale eddy covariance (CO\u2082, CH\u2084, N\u2082O) with chamber and dissolved-carbon measurements at conserved and drained peatlands in the Colombian Andes, and synthesized new \u00b2\u00b9\u2070Pb-dated peat-core records spanning the last century across multiple Andean sites. The tower observations reveal pronounced seasonality in carbon exchange despite minimal temperature variation: short hydrologic excursions\u2014especially lower water tables during El Ni\u00f1o\u2013related dry periods\u2014trigger rapid increases in ecosystem respiration and net carbon loss at the drained site, while the conserved site remains a persistent carbon sink outside droughts. CH\u2084 dominates the CO\u2082-equivalent climate forcing at the conserved site due to higher water tables, even though the carbon mass balance is not CH\u2084-dominated. In contrast, the \u00b2\u00b9\u2070Pb cores primarily register plant production showing coherent, multi-decadal patterns in peat accumulation that track regional temperature anomalies more than elevation. Warmer anomalies are associated with higher accumulation rates, whereas cooler periods show reduced accumulation, with disturbance further depressing long-term carbon gains.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n<p><strong>Speaker:<\/strong> Assoc. Prof. Juan C. Benavides<\/p>\n<p><strong>Affiliation:<\/strong> Faculty of Environmental Studies, Javeriana University, Colombia<\/p>\n<p><strong>Time:<\/strong> 14:30 PM, Tuesday, November 18, 2025<\/p>\n<p><strong>Venue: <\/strong>Offline: The Conference Hall in XTBG<\/p>\n<p>Online: Tencent Meeting\u00a0 \u00a0ID: 659 765 636<\/p>\n<p>\u00a0<\/p>\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<div class=\"wp-container-1 wp-block-group\"><div class=\"wp-block-group__inner-container\">\n<div style=\"height:0px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Speaker: Assoc. Prof. Juan C. Benavides<br \/>\nAffiliation: Faculty of Environmental Studies, Javeriana University, Colombia<br \/>\nTime: 14:30 PM, Tuesday, November 18, 2025<\/p>\n","protected":false},"author":2,"featured_media":3596,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"_links":{"self":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/3594"}],"collection":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3594"}],"version-history":[{"count":2,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/3594\/revisions"}],"predecessor-version":[{"id":3597,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/3594\/revisions\/3597"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/media\/3596"}],"wp:attachment":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3594"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}