{"id":7741,"date":"2016-06-14T22:19:52","date_gmt":"2016-06-14T22:19:52","guid":{"rendered":"https:\/\/www.darkenergybiosphere.org\/?post_type=publication&#038;p=7730"},"modified":"2016-10-14T19:06:46","modified_gmt":"2016-10-14T19:06:46","slug":"data-report-characteristics-of-sedimentary-phosphorus-at-north-pond-iodp-expedition-336","status":"publish","type":"publication","link":"https:\/\/www.darkenergybiosphere.org\/publication\/data-report-characteristics-of-sedimentary-phosphorus-at-north-pond-iodp-expedition-336\/","title":{"rendered":"Data report: characteristics of sedimentary phosphorus at North Pond, IODP Expedition 336"},"content":{"rendered":"<p>Phosphorus (P) plays an important role in fueling life, including microbial life in the deep subseafloor environment, which is estimated to contain up to 1% of Earth\u2019s total biomass. These microorganisms play a significant role in controlling the chemical composition of the deep ocean and atmosphere on geological timescales by selectively degrading organic matter through metabolic respiration. Consequently, understanding P geochemistry in subseafloor sediments is important, as P bioavailability can impact microbial activity. This study focuses on characterizing and quantifying the main reservoirs of solid-phase P in open-ocean sediments. The sediment samples used in this study were collected during Integrated Ocean Drilling Program (IODP) Expedition 336 to North Pond, a sediment pond located on the western flank of the Mid-Atlantic Ridge. We characterized solid-phase P reservoirs in sediments from four holes (U1384A, U1382B, U1383D, and U1383E) using the sedimentary extraction (SEDEX) sequential extraction scheme. This method quantitatively separates five distinct sedimentary P reservoirs: (1) loosely sorbed P, (2) ferric iron-bound P, (3) authigenic carbonate fluorapatite + biogenic apatite + CaCO<sub class=\"cSubscript\">3<\/sub>-associated P, (4) detrital apatite, and (5)\u00a0refractory organic P. The separation of these P-bearing phases is based on the reactivity of each targeted phase to a particular extractant solution.<\/p>\n","protected":false},"template":"","tags":[],"publication_type":[21],"_links":{"self":[{"href":"https:\/\/www.darkenergybiosphere.org\/wp-json\/wp\/v2\/publication\/7741"}],"collection":[{"href":"https:\/\/www.darkenergybiosphere.org\/wp-json\/wp\/v2\/publication"}],"about":[{"href":"https:\/\/www.darkenergybiosphere.org\/wp-json\/wp\/v2\/types\/publication"}],"wp:attachment":[{"href":"https:\/\/www.darkenergybiosphere.org\/wp-json\/wp\/v2\/media?parent=7741"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.darkenergybiosphere.org\/wp-json\/wp\/v2\/tags?post=7741"},{"taxonomy":"publication_type","embeddable":true,"href":"https:\/\/www.darkenergybiosphere.org\/wp-json\/wp\/v2\/publication_type?post=7741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}