globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13801
论文题名:
Marine-terminating glaciers sustain high productivity in Greenland fjords
作者: Meire L.; Mortensen J.; Meire P.; Juul-Pedersen T.; Sejr M.K.; Rysgaard S.; Nygaard R.; Huybrechts P.; Meysman F.J.R.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
语种: 英语
英文关键词: Climate change ; Fjords ; Glaciers ; Greenland ice sheet ; Oceanography ; Phytoplankton ; Primary production
英文摘要: Accelerated mass loss from the Greenland ice sheet leads to glacier retreat and an increasing input of glacial meltwater to the fjords and coastal waters around Greenland. These high latitude ecosystems are highly productive and sustain important fisheries, yet it remains uncertain how they will respond to future changes in the Arctic cryosphere. Here we show that marine-terminating glaciers play a crucial role in sustaining high productivity of the fjord ecosystems. Hydrographic and biogeochemical data from two fjord systems adjacent to the Greenland ice sheet, suggest that marine ecosystem productivity is very differently regulated in fjords influenced by either land-terminating or marine-terminating glaciers. Rising subsurface meltwater plumes originating from marine-terminating glaciers entrain large volumes of ambient deep water to the surface. The resulting upwelling of nutrient-rich deep water sustains a high phytoplankton productivity throughout summer in the fjord with marine-terminating glaciers. In contrast, the fjord with only land-terminating glaciers lack this upwelling mechanism, and is characterized by lower productivity. Data on commercial halibut landings support that coastal regions influenced by large marine-terminating glaciers have substantially higher marine productivity. These results suggest that a switch from marine-terminating to land-terminating glaciers can substantially alter the productivity in the coastal zone around Greenland with potentially large ecological and socio-economic implications. © 2017 John Wiley & Sons Ltd.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61146
Appears in Collections:影响、适应和脆弱性

Files in This Item:

There are no files associated with this item.


作者单位: Greenland Climate Research Centre (GCRC) Greenland Institute of Natural Resources Nuuk Greenland; Department of Estuarine and Delta Systems NIOZ Royal Netherlands Institute of Sea Research and Utrecht University Yerseke The Netherlands; Arctic Research Centre Aarhus University Aarhus Denmark; Ecosystem Management Research Group University of Antwerp Antwerpen Belgium; Department of environment and Geography Centre for Earth Observation Science University of Manitoba Winnipeg Canada; Department of Geological Sciences University of Manitoba Winnipeg Canada; Earth System Science and Departement Geografie Vrije Universiteit Brussel Brussel, Belgium; Department of Analytical, Environmental and Geochemistry (AMGC) Vrije Universiteit Brussel (VUB) Brussel Belgium

Recommended Citation:
Meire L.,Mortensen J.,Meire P.,et al. Marine-terminating glaciers sustain high productivity in Greenland fjords[J]. Global Change Biology,2017-01-01
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Meire L.]'s Articles
[Mortensen J.]'s Articles
[Meire P.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Meire L.]'s Articles
[Mortensen J.]'s Articles
[Meire P.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Meire L.]‘s Articles
[Mortensen J.]‘s Articles
[Meire P.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.