کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8400051 | 1544439 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Can seabirds modify carbon burial in fjords?
ترجمه فارسی عنوان
آیا پرندگان دریایی می توانند دفن کربن را در فورورد تغییر دهند؟
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کلمات کلیدی
قطب شمال، سویلبرگ، فجوردها، کربن، پرنده ها،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
اقیانوس شناسی
چکیده انگلیسی
Two high latitude fjords of Spitsbergen (Hornsund 77°N and Kongsfjorden 79°N) are regarded as being highly productive (70 g and 50 gC mâ2 yearâ1) and having organic-rich sediments. Hornsund has more organic matter in its sediments (8%), nearly half of it of terrestrial origin, while most of that in Kongsfjorden (5%) comes from fresh, marine sources (microplankton). Analysis of the carbon sources in both fjords shows that a major difference is the much larger seabird population in Hornsund-dominated with over 100 thousands pairs of plankton feeding little auks in Hornsund versus 2 thousand pairs in Kongsfjorden, and marine food consumption estimated as 5573 tonnes of carbon in Hornsund, versus 3047 tonnes in Kongsfjorden during one month of chick feeding period. Seabird colonies supply rich ornithogenic tundra (595 tonnes of C, as against only 266 tonnes of C in the Kongsfjorden tundra). No much of the terrestrial carbon, flushed out or wind-blown to the fjord, is consumed on the seabed - a state of affairs that is reflected by the low metabolic activity of bacteria and benthos and the lower benthic biomass in Hornsund than in Kongsfjorden.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Oceanologia - Volume 59, Issue 4, OctoberâDecember 2017, Pages 603-611
Journal: Oceanologia - Volume 59, Issue 4, OctoberâDecember 2017, Pages 603-611
نویسندگان
Jan Marcin WÄsÅawski, Jacek UrbaÅski, Marta GÅuchowska, Katarzyna Grzelak, Lech Kotwicki, SÅawomir KwaÅniewski, Joanna LegeżyÅska, Józef Wiktor, Maria WÅodarska-Kowalczuk, Agata Zaborska, Marek ZajÄ
czkowski, Lech Stempniewicz,