Coupled landscape–lake evolution in High Arctic
Abstract: We profiled five ice-covered lakes and two ice-covered fiords of Ellesmere Island at the northern limit of High Arctic Canada to examine their environmental characteristics, and to evaluate the long-term limnological consequences of changes in their surrounding landscape through time (land...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.454.2931 http://132.203.57.253/warwickvincent/PDFfiles/193.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.454.2931 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.454.2931 2023-05-15T14:59:49+02:00 Coupled landscape–lake evolution in High Arctic Patrick Van Hove Claude Belzile John A. E. Gibson Warwick F. Vincent The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.454.2931 http://132.203.57.253/warwickvincent/PDFfiles/193.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.454.2931 http://132.203.57.253/warwickvincent/PDFfiles/193.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://132.203.57.253/warwickvincent/PDFfiles/193.pdf text ftciteseerx 2016-01-08T06:05:03Z Abstract: We profiled five ice-covered lakes and two ice-covered fiords of Ellesmere Island at the northern limit of High Arctic Canada to examine their environmental characteristics, and to evaluate the long-term limnological consequences of changes in their surrounding landscape through time (landscape evolution). All of the ecosystems showed strong patterns of thermal, chemical, and biological stratification with subsurface temperature maxima from 0.75 to 12.15 °C; conductivities up to 98.1 mS cm–1 (twice that of seawater) in some bottom waters; pronounced gradients in nitrogen, phosphorus, pH, dissolved inorganic and organic carbon, manganese, iron, and oxygen; and stratified photo-synthetic communities. These ecosystems form an inferred chronosequence that reflects different steps of landscape evolution including marine embayments open to the sea, inlets blocked by thick sea ice (Disraeli Fiord, Taconite Inlet), perennially ice-capped, saline lakes isolated from the sea by isostatic uplift (Lakes A, C1, C2), and isolated lakes that lose their ice cover in summer. The latter are subject to entrainment of saline water into their upper water column by wind-induced mixing (Lake Romulus; Lake A in 2000), or complete flushing of their basins by dilute snowmelt (Lake C3 and Char Lake, which lies 650 km to the south of the Ellesmere lakes region). This chronosequence illustrates how changes in geomorphology and other landscape properties may influence the limnology of coastal, high-latitude lakes, and it provides a framework to explore the potential impacts of climate change. Résumé: Cinq lacs et deux fjords recouverts de glace ont été profilés sur l’Île Ellesmere à la limite nord de l’Extrême- Text Arctic Climate change Ellesmere Island Sea ice Unknown Arctic Canada Disraeli Fiord ENVELOPE(-73.344,-73.344,82.819,82.819) Ellesmere Island Romulus Lake ENVELOPE(-85.083,-85.083,79.867,79.867) Taconite Inlet ENVELOPE(-78.213,-78.213,82.852,82.852) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Abstract: We profiled five ice-covered lakes and two ice-covered fiords of Ellesmere Island at the northern limit of High Arctic Canada to examine their environmental characteristics, and to evaluate the long-term limnological consequences of changes in their surrounding landscape through time (landscape evolution). All of the ecosystems showed strong patterns of thermal, chemical, and biological stratification with subsurface temperature maxima from 0.75 to 12.15 °C; conductivities up to 98.1 mS cm–1 (twice that of seawater) in some bottom waters; pronounced gradients in nitrogen, phosphorus, pH, dissolved inorganic and organic carbon, manganese, iron, and oxygen; and stratified photo-synthetic communities. These ecosystems form an inferred chronosequence that reflects different steps of landscape evolution including marine embayments open to the sea, inlets blocked by thick sea ice (Disraeli Fiord, Taconite Inlet), perennially ice-capped, saline lakes isolated from the sea by isostatic uplift (Lakes A, C1, C2), and isolated lakes that lose their ice cover in summer. The latter are subject to entrainment of saline water into their upper water column by wind-induced mixing (Lake Romulus; Lake A in 2000), or complete flushing of their basins by dilute snowmelt (Lake C3 and Char Lake, which lies 650 km to the south of the Ellesmere lakes region). This chronosequence illustrates how changes in geomorphology and other landscape properties may influence the limnology of coastal, high-latitude lakes, and it provides a framework to explore the potential impacts of climate change. Résumé: Cinq lacs et deux fjords recouverts de glace ont été profilés sur l’Île Ellesmere à la limite nord de l’Extrême- |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Patrick Van Hove Claude Belzile John A. E. Gibson Warwick F. Vincent |
spellingShingle |
Patrick Van Hove Claude Belzile John A. E. Gibson Warwick F. Vincent Coupled landscape–lake evolution in High Arctic |
author_facet |
Patrick Van Hove Claude Belzile John A. E. Gibson Warwick F. Vincent |
author_sort |
Patrick Van Hove |
title |
Coupled landscape–lake evolution in High Arctic |
title_short |
Coupled landscape–lake evolution in High Arctic |
title_full |
Coupled landscape–lake evolution in High Arctic |
title_fullStr |
Coupled landscape–lake evolution in High Arctic |
title_full_unstemmed |
Coupled landscape–lake evolution in High Arctic |
title_sort |
coupled landscape–lake evolution in high arctic |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.454.2931 http://132.203.57.253/warwickvincent/PDFfiles/193.pdf |
long_lat |
ENVELOPE(-73.344,-73.344,82.819,82.819) ENVELOPE(-85.083,-85.083,79.867,79.867) ENVELOPE(-78.213,-78.213,82.852,82.852) |
geographic |
Arctic Canada Disraeli Fiord Ellesmere Island Romulus Lake Taconite Inlet |
geographic_facet |
Arctic Canada Disraeli Fiord Ellesmere Island Romulus Lake Taconite Inlet |
genre |
Arctic Climate change Ellesmere Island Sea ice |
genre_facet |
Arctic Climate change Ellesmere Island Sea ice |
op_source |
http://132.203.57.253/warwickvincent/PDFfiles/193.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.454.2931 http://132.203.57.253/warwickvincent/PDFfiles/193.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766331944652505088 |