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The model relates the annual cycle of plankton production in the form of a series of successive phytoplankton, mesozooplankton, and higher consumer blooms to organic matter generation and to the remineralization\u2010ammonification\u2010nitrification\u2010denitrification chain of the nitrogen cycle as well as to anaerobic sulfide oxidation in the suboxic\u2010anoxic interface zone. The simulations indicate that oxygen consumption during remineralization and nitrification, together with a lack of ventilation of subsurface waters due to the presence of strong stratification, are the two main factors limiting aerobic biogeochemical activity to the upper \u223c75 m of the water column, which approximately corresponds to the level of nitrate maximum. The position of the upper boundary and thus the thickness of the suboxic layer are controlled by upper layer biological processes. The quasi\u2010permanent character of this layer and the stability of the suboxic\u2010anoxic interface within the last several decades are maintained by a constant rate of nitrate supply from the nitrate maximum zone. Nitrate is consumed to oxidize sinking particulate organic matter as well as hydrogen sulfide and ammonium transported upward from deeper levels.<\/jats:p>","DOI":"10.1029\/1999gb001253","type":"journal-article","created":{"date-parts":[[2004,2,4]],"date-time":"2004-02-04T03:05:32Z","timestamp":1075863932000},"page":"1331-1352","source":"Crossref","is-referenced-by-count":77,"title":["Modeling distinct vertical biogeochemical structure of the Black Sea: Dynamical coupling of the oxic, suboxic, and anoxic layers"],"prefix":"10.1029","volume":"14","author":[{"given":"Temel","family":"Oguz","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hugh W.","family":"Ducklow","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paola","family":"Malanotte\u2010Rizzoli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"13","published-online":{"date-parts":[[2000,12]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1029\/1999GB900013"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-4203(94)90099-X"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-94-011-5758-2_15"},{"key":"e_1_2_1_5_1","first-page":"429","article-title":"International expedition on board R\/V Bilim in July 1997 in the Black Sea","volume":"38","author":"Basturk O.","year":"1998","journal-title":"Oceanology"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-3800(92)90041-C"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0304-3800(96)00056-7"},{"key":"e_1_2_1_8_1","first-page":"137","volume-title":"The Black Sea\u2010Geology, Chemistry, and Biology, Mem.","author":"Brewer P. 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