The high-mountain ecosystems of Central Asia are a biodiversity hotspot with unique plant communities and many endemic species.<\/p>\n\n\n\n
Intense human pressure and global warming have caused habitat destruction in these areas and a parallel increase in the number of endangered species. Lagochilus<\/em> species are key medicinal herbaceous plants native to Central Asia, many of which have been recently added to the list of endangered species in Uzbekistan.<\/p>\n\n\n\n To assess the climate sensitivity of Lagochilus<\/em> species, we (1) located populations of species in their native sites across Uzbekistan, and assessed their health by partitioning to ontogenetic stages along five consecutive years; (2) collected plant materials from these species, as well as from old herbarium samples (1918\u20131964); and (3) analyzed the carbon-13 composition in those samples, as an indicator for drought stress. Over five years (2014\u20132018) of continuous monitoring, fluctuations in annual precipitation in the region indicated a decrease by ~20 %, and the fraction of young plants in each population decreased from 20\u201350% to 0\u20135 %, depending on the species. Comparing the carbon-13 composition in current and historical leaf samples showed an increase of 1.5\u20133.5\u2030 associated with a decrease in precipitation of 2\u201330 %, depending on the site and species.<\/p>\n\n\n\n Our results show the high sensitivity of Lagochilus<\/em> populations\u2019 regeneration to drying, among species and in sites across Uzbekistan. On a multi-decadal temporal scale, the dramatic changes in carbon-13 indicate that the response to precipitation reduction is related to drought stress. Considering the expectation for drier and hotter climates in Uzbekistan in the coming decades, conservation of Lagochilus<\/em> populations should become a priority in Central Asia.<\/p>\n\n\n\n Speaker:<\/strong> Dr. Akbar Akhmedov<\/p>\n Affiliation: <\/strong>Samarkand State University<\/p>\n Time: <\/strong>4:30 PM, Tuesday, May 27, 2025<\/p>\n Venue: <\/strong>Offline: The Conference Hall in Xishuangbanna Headquarter<\/p>\n Online: Tencent Meeting\u00a0 \u00a0ID\uff1a297 585 456<\/p>\n \u00a0<\/p>\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" Speaker: Dr. Akbar Akhmedov
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\nAffiliation: Samarkand State University
\nTime: 4:30 PM, Tuesday, May 27, 2025<\/p>\n","protected":false},"author":2,"featured_media":3552,"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\/3551"}],"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=3551"}],"version-history":[{"count":1,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/3551\/revisions"}],"predecessor-version":[{"id":3553,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/3551\/revisions\/3553"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/media\/3552"}],"wp:attachment":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3551"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}