{"id":937,"date":"2014-04-25T01:56:21","date_gmt":"2014-04-25T01:56:21","guid":{"rendered":"http:\/\/daphnia.ecology.uga.edu\/drakelab\/?p=937"},"modified":"2014-08-15T16:53:08","modified_gmt":"2014-08-15T16:53:08","slug":"phase-transitions-in-salmon-population-dynamics","status":"publish","type":"post","link":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/?p=937","title":{"rendered":"Phase transitions in salmon population dynamics"},"content":{"rendered":"<p>Early warning signals for critical transitions have now been described from a number of ecological and geophysical systems. Most of these signals reflect a dynamical phenomenon called <em>critical slowing down<\/em> (CSD). One possible application for warning signals based on CSD that has not yet been developed is the forecasting of fish stock collapses. A precursor to the development of any such early warning signal is the demonstration that critical transitions in fish populations exhibit critical slowing down. A new paper by <a href=\"http:\/\/labs.eeb.utoronto.ca\/krkosek\/\">Marty Krkosek<\/a> (University of Toledo) and John Drake shows that Pink salmon (<em>Oncorhynchus gorbuscha<\/em>) exhibit increased variance and autocorrelation as the critical point is approached (consistent with the theory of critical slowing down), but that Sockeye salmon (<em>Oncorhynchus nerka<\/em>) do not, probably as a result of age structure. Chum salmon (<em>Oncorhynchus keta<\/em>) are somewhere in between. These results are the first that we know of to describe these &#8220;near critical&#8221; patterns in harvested species.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Early warning signals for critical transitions have now been described from a number of ecological and geophysical systems. Most of these signals reflect a dynamical&#8230;<\/p>\n","protected":false},"author":2,"featured_media":959,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,10,7,43,31],"tags":[17,32],"class_list":["post-937","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-critical-transitions","category-evolution","category-extinction","category-new-paper","category-news-and-notes","tag-extinction-2","tag-simulation-modeling"],"_links":{"self":[{"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=\/wp\/v2\/posts\/937","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=937"}],"version-history":[{"count":6,"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=\/wp\/v2\/posts\/937\/revisions"}],"predecessor-version":[{"id":1242,"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=\/wp\/v2\/posts\/937\/revisions\/1242"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=\/wp\/v2\/media\/959"}],"wp:attachment":[{"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/daphnia.ecology.uga.edu\/drakelab\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}