کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5758065 | 1622817 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Extreme oxygen dynamics in shallow water of a fully marine Irish sea lough
ترجمه فارسی عنوان
دینامیک اکسیژن شدید در آب های کم عمق دریا دریایی کاملا دریایی
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کلمات کلیدی
هیپوکسیا، هیپوکسیا، نوسانات اکسیژن، لوه هیون، ایرلند، ذخایر دریایی،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
اقیانوس شناسی
چکیده انگلیسی
The benthos of Lough Hyne (Europe's first marine reserve) in SW Ireland has changed dramatically in the past decade with declining invertebrate communities and proliferating ephemeral macroalgae. In summer 2011 and 2012, we measured dissolved oxygen (DO) levels on shallow subtidal rocky shores of the lough and recorded both benthic hypoxia (<2 mg O2  Lâ1) and hyperoxia (â¼10-16 mg O2  Lâ1). In late summer 2013, we systematically characterized the spatial and temporal patterns of DO in the lough seawater. Daytime DO levels were hyperoxic either at or near the rocky shore, declined with increased distance for the first 5 m offshore, then stabilized at normoxic levels (â¼8 mg O2  Lâ1). DO levels above and below rocks were variable and often showed large differences (max. difference of 15.6 mg O2  Lâ1), particularly at rocky shore sites with low current flow. At night, the DO in shallow water declined, becoming hypoxic to anoxic during calm weather. These extreme oxygen fluctuations (i) are amongst the first records to report severe conditions within Irish coastal waters and (ii) could contribute to the known recent decline in benthic invertebrate diversity within the marine reserve.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Regional Studies in Marine Science - Volume 11, March 2017, Pages 9-16
Journal: Regional Studies in Marine Science - Volume 11, March 2017, Pages 9-16
نویسندگان
Cynthia D. Trowbridge, John Davenport, Dylan M. Cottrell, Luke Harman, Caitlin Q. Plowman, Colin Little, Rob McAllen,