{"id":618,"date":"2015-02-04T06:00:35","date_gmt":"2015-02-04T11:00:35","guid":{"rendered":"https:\/\/sites.temple.edu\/bobsanders\/?p=618"},"modified":"2015-02-04T06:02:52","modified_gmt":"2015-02-04T11:02:52","slug":"another-graham-publication-accepted","status":"publish","type":"post","link":"https:\/\/sites.temple.edu\/bobsanders\/2015\/02\/04\/another-graham-publication-accepted\/","title":{"rendered":"Ocean Acidification pub by Erin Graham accepted"},"content":{"rendered":"<p>&#8220;Species-specific photosynthetic responses of symbiotic zoanthids to thermal stress and ocean acidification&#8221; by Erin R. Graham and Robert W. Sanders is accepted for publication in <a href=\"http:\/\/onlinelibrary.wiley.com\/journal\/10.1111\/%28ISSN%291439-0485\">Marine Ecology<\/a>.<\/p>\n<p>ABSTRACT: Increasing sea surface temperatures and ocean acidification (OA) are impacting physiological processes in a variety of marine organisms. Many sea anemones, corals, and jellies in the phylum Cnidaria, form endosymbiotic relationships with the dinoflagellate <em>Symbiodinium<\/em> spp., which supplies the hosts with fixed carbon from photosynthesis. Much work has focused on the generally negative effects of rising temperature and OA on calcification in <em>Symbiodinium<\/em>-coral symbioses, but has not directly measured symbiont photosynthesis <em>in hospite<\/em> or fixed carbon translocation from symbiont to host. <em>Symbiodinium<\/em> species or types vary in their environmental tolerance and photosynthetic capacity, therefore, primary production in symbiotic associations is directly related to symbiont type. However, symbiont type has not been identified in a large portion of <em>Symbiodinium<\/em>-cnidarian studies. Future climate conditions and OA may favor non-calcifying, soft-bodied cnidarians, including zoanthids, over coral species. Here we show that two zoanthid species, <em>Palythoa<\/em> sp. and <em>Zoanthus <\/em>sp<em>., <\/em>harboring different symbiont types (C1 and A4), had very different responses to increased temperature and increased <em>p<\/em>CO<sub>2<\/sub>\/low pH. Thermal stress did not affect carbon fixation or fixed carbon translocation in the <em>Zoanthus <\/em>sp.\/A4 association, and high <em>p<\/em>CO<sub>2<\/sub>\/low pH increased carbon fixation. In contrast, both thermal stress and high <em>p<\/em>CO<sub>2<\/sub>\/low pH greatly inhibited carbon fixation in the <em>Palythoa<\/em> sp.\/C1 association. However, the combined treatment of high temperature and high <em>p<\/em>CO<sub>2<\/sub> increased carbon fixation relative to the treatment of high temperature alone. Our observations support the growing body of evidence that demonstrates that the response of symbiotic cnidarians to thermal stress and OA must be considered on a host-specific and symbiont-specific basis. In addition, we show that the effects of increased temperature and <em>p<\/em>CO<sub>2<\/sub> on photosynthesis may change when these two stressors are combined. Understanding how carbon fixation and translocation varies among different host-symbiont combinations is critical to predicting which <em>Symbiodinium <\/em>associations may persist in warm, acidified oceans.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Species-specific photosynthetic responses of symbiotic zoanthids to thermal stress and ocean acidification&#8221; by Erin R. Graham and Robert W. Sanders is accepted for publication in Marine Ecology. ABSTRACT: Increasing sea surface temperatures and ocean acidification (OA) are impacting physiological processes &hellip; <a href=\"https:\/\/sites.temple.edu\/bobsanders\/2015\/02\/04\/another-graham-publication-accepted\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":939,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"link","meta":{"footnotes":""},"categories":[6,7],"tags":[],"class_list":["post-618","post","type-post","status-publish","format-link","hentry","category-lab-news","category-publications","post_format-post-format-link"],"_links":{"self":[{"href":"https:\/\/sites.temple.edu\/bobsanders\/wp-json\/wp\/v2\/posts\/618","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.temple.edu\/bobsanders\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.temple.edu\/bobsanders\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/bobsanders\/wp-json\/wp\/v2\/users\/939"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/bobsanders\/wp-json\/wp\/v2\/comments?post=618"}],"version-history":[{"count":0,"href":"https:\/\/sites.temple.edu\/bobsanders\/wp-json\/wp\/v2\/posts\/618\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.temple.edu\/bobsanders\/wp-json\/wp\/v2\/media?parent=618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.temple.edu\/bobsanders\/wp-json\/wp\/v2\/categories?post=618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.temple.edu\/bobsanders\/wp-json\/wp\/v2\/tags?post=618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}