{"id":175751,"date":"2020-12-07T20:29:00","date_gmt":"2020-12-08T01:29:00","guid":{"rendered":"https:\/\/www.panix.com\/~msaroff\/40years\/2020\/12\/07\/brexit-and-differential-equations\/"},"modified":"2020-12-07T20:29:00","modified_gmt":"2020-12-08T01:29:00","slug":"brexit-and-differential-equations","status":"publish","type":"post","link":"https:\/\/www.panix.com\/~msaroff\/40years\/2020\/12\/07\/brexit-and-differential-equations\/","title":{"rendered":"Brexit and Differential Equations"},"content":{"rendered":"<p>  <a href=\"https:\/\/i.imgur.com\/5swZ39K.gif\"><img decoding=\"async\" src=\"https:\/\/i.imgur.com\/5swZ39K.gif\" style=\"cursor: pointer; float: right; margin: 0px 0px 10px 10px;\" width=\"250\" \/><\/a>As you may or may not be aware, one of the sticking points on Brexit is that   the   <a href=\"https:\/\/www.politico.eu\/article\/fisheries-wont-be-sacrificed-in-brexit-deal-french-europe-minister-says\/\">French and the Spanish are demanding the right to continue to fish (strip     mine) British waters<\/a>. <\/p>\n<p>  What I know is that if there is no deal, and Europeans are not allowed to fish   those waters, then the pressure on the fishery will be reduced, at least until   the British fishing fleet is expanded. <\/p>\n<p>If you have been following this, this is pretty obvious.<\/p>\n<p>  The thing that I know, and you probably don&#8217;t, is that if the continental   fishing fleets are excluded, then the percentage of selachians, sharks skates,   and rays, of the catch, will go up. <\/p>\n<p>  The short version is that with reduce human predation, other predators will   take up the slack. <\/p>\n<p>  The longer version, and the one that I learned in differential equation class   in college is that&nbsp;   <a href=\"https:\/\/en.wikipedia.org\/wiki\/Lotka%E2%80%93Volterra_equations\">Lotka\u2013Volterra equations<\/a>  were developed to describe the changes in catches in Italian fisheries during   the First World War.&nbsp;<\/p>\n<p>With many fishermen at the front, the total catch declined, and the percentage of sharks and related fish increased. <\/p>\n<p>  The instructor described this as the first application of differential   equations to what could generally be called ecology, though I had to explain to him   what selachians were .<\/p>\n<p>So, a no-deal Brexit is a happy time for sharks in UK waters.<\/p>\n<p>Now you know.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As you may or may not be aware, one of the sticking points on Brexit is that the French and the Spanish are demanding the right to continue to fish (strip mine) British waters. What I know is that if there is no deal, and Europeans are not allowed to fish those waters, then the &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[394,417,624,625,421],"class_list":["post-175751","post","type-post","status-publish","format-standard","hentry","tag-foreign-relations","tag-international-commerce","tag-mathematics","tag-nature","tag-weird"],"_links":{"self":[{"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/posts\/175751"}],"collection":[{"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/comments?post=175751"}],"version-history":[{"count":0,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/posts\/175751\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/media?parent=175751"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/categories?post=175751"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.panix.com\/~msaroff\/40years\/wp-json\/wp\/v2\/tags?post=175751"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}