{"id":2946,"date":"2022-05-16T15:10:16","date_gmt":"2022-05-16T07:10:16","guid":{"rendered":"http:\/\/seminar.xtbg.ac.cn\/?p=2946"},"modified":"2022-05-23T10:11:26","modified_gmt":"2022-05-23T02:11:26","slug":"on-dinosaurs-megafruits-and-extinctions","status":"publish","type":"post","link":"http:\/\/seminar.xtbg.ac.cn\/?p=2946","title":{"rendered":"On dinosaurs, megafruits, and extinctions"},"content":{"rendered":"\n<h2>Abstract:<\/h2>\n\n\n\n<p>Many plants have evolved traits in response to interactions with megafaunal animals, such as large, \u2018megafaunal\u2019 fruits or defence traits (e.g., spines). However, two major global extinction events in Earth\u2019s history impacted terrestrial megafauna dramatically: The Cretaceous\u2013Paleogene extinction of the non-avian dinosaurs, and the much more recent Late Pleistocene and Holocene extinctions of many megafaunal mammals, reptiles, and large birds. The eco-evolutionary consequences of these extinction events for plants that were pre-adapted to interact with megafauna remain poorly explored. In this talk, I will apply comparative methods and phylogenetic modelling to show that the 25-million-year gap of megaherbivores after the non-avian dinosaur extinction and before the evolution of megaherbivorous mammals in the Late Eocene, was characterized by speciation slowdowns, decreased evolution of defence traits, and increased evolution of megafaunal fruits in palms (Arecaceae). Then, using a novel database of present-day megafruit plant species and >10000 seed-dispersal records, I will show that \u2018true\u2019 anachronistic megafruit species (without any dispersal record) suffer from dispersal limitation, small geographical range sizes, and high extinction risk compared with megafruit species still dispersed today by large ungulates, apes, rodents, and humans. I will discuss how the disruption of mutualistic and antagonistic interactions affect plant survival and persistence in defaunated landscapes.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n<p><strong>Speaker: <\/strong>Dr. Renske Onstein<\/p>\n<p><strong>Affiliation: <\/strong>German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Germany<\/p>\n<p><strong>Time:<\/strong> May. 17, 2022<\/p>\n<p><strong>Venue: <\/strong>\u77a9\u76ee\u4f1a\u8bae\u5e73\u53f0 \u4f1a\u8bae ID\uff1a135 871 8714 \u00a0\u4f1a\u8bae\u5bc6\u7801 PWD\uff1a666666\u00a0<\/p>\n<p>\u89c6\u9891\u4e0b\u8f7dDownload Link\u94fe\u63a5: https:\/\/pan.baidu.com\/s\/1xRgE0XeIp4qGBtYKLU5xmA\u00a0 Pwd\u63d0\u53d6\u7801: fx54<\/p>\n<p>\u77a9\u76eeZHUMU <br \/>\u4f1a\u8bae ID\uff1a135 871 8714 <br \/>\u4f1a\u8bae\u5bc6\u7801 PWD\uff1a666666<br \/>\u56fd\u5185\u7528\u6237\u4e0b\u8f7d\u5730\u5740Download address for domestic users\uff1ahttps:\/\/zhumu.com\/download<br \/>\u56fd\u9645\u7528\u6237\u4e0b\u8f7d\u5730\u5740Download address for international users\uff1ahttps:\/\/zhumu.com\/download-intl<\/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:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Speaker: Dr. Renske Onstein<br \/>\nAffiliation: German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Germany<br \/>\nTime: May. 17, 2022<\/p>\n","protected":false},"author":2,"featured_media":2947,"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\/2946"}],"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=2946"}],"version-history":[{"count":1,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/2946\/revisions"}],"predecessor-version":[{"id":2948,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/posts\/2946\/revisions\/2948"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=\/wp\/v2\/media\/2947"}],"wp:attachment":[{"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2946"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/seminar.xtbg.ac.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}