{"id":1966,"date":"2018-01-03T21:17:50","date_gmt":"2018-01-04T05:17:50","guid":{"rendered":"http:\/\/calsport.org\/fisheriesblog\/?p=1966"},"modified":"2018-01-03T21:17:50","modified_gmt":"2018-01-04T05:17:50","slug":"delta-smelt-end-of-2017","status":"publish","type":"post","link":"https:\/\/calsport.org\/fisheriesblog\/?p=1966","title":{"rendered":"Delta Smelt: End of 2017"},"content":{"rendered":"

In a recent post<\/a>, I summarized the population dynamics of Delta smelt using the Summer Townet Index and Fall Midwater Trawl index relationships.\u00a0 Since then, the California Department of Fish and Wildlife updated<\/a> the Fall Midwater Trawl Index for 2017.\u00a0 In turn, I update the relationships in Figures 1 and 2 below.\u00a0 As I predicted in another post<\/a> last fall, there was no uptick in the 2017 index, despite it being a wet year.\u00a0 News articles<\/a> on the subject suggest \u201cno easy answers.\u201d\u00a0 To me it is obvious that the water project managers went out of their way to short smelt in 2017<\/a>.\u00a0 The prognosis for Delta smelt remains grim.<\/p>\n

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Figure 1. Log vs Log plot of fall FMWT Index of Delta smelt as related to the prior summer STN Index of abundance for that year. Blue years are wet water years (Oct-Sept). Green years are normal water years. Red years are dry and critical water years. Year types are as determined by the California Department of Water Resources for the Sacramento River runoff to the Bay-Delta Estuary (http:\/\/cdec.water.ca.gov\/cgi-progs\/iodir\/WSIHIST<\/a>).<\/p><\/div>\n

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Figure 2. Log vs Log plot of fall FMWT Index of Delta smelt (recruits) vs previous fall index (spawners). Blue years are wet water years. Green years are normal water years. Red years are dry and critical water years. Year types are as determined by the California Department of Water Resources for the Sacramento River runoff to the Bay-Delta Estuary (http:\/\/cdec.water.ca.gov\/cgi-progs\/iodir\/WSIHIST<\/a>).<\/p><\/div>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

In a recent post, I summarized the population dynamics of Delta smelt using the Summer Townet Index and Fall Midwater Trawl index relationships.\u00a0 Since then, the California Department of Fish and Wildlife updated the Fall Midwater Trawl Index for 2017.\u00a0 … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[15,6],"tags":[],"class_list":["post-1966","post","type-post","status-publish","format-standard","hentry","category-bay-delta","category-smelt"],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/posts\/1966","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1966"}],"version-history":[{"count":1,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/posts\/1966\/revisions"}],"predecessor-version":[{"id":1969,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=\/wp\/v2\/posts\/1966\/revisions\/1969"}],"wp:attachment":[{"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/calsport.org\/fisheriesblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}