Results 51 to 60 of about 2,197 (157)

Microbial nutrient limitation in Arctic lakes in a permafrost landscape of southwest Greenland [PDF]

Biogeosciences, 2015
Abstract. Permafrost is degrading across regions of the Arctic, which can lead to increases in nutrient concentrations in surface freshwaters. The oligotrophic state of many Arctic lakes suggests that enhanced nutrient inputs may have important effects on these systems, but little is known about microbial nutrient limitation patterns in these lakes. We
B. Burpee, J. E. Saros, R. M. Northington, K. S. Simon   +3 more
openaire   +3 more sources

Permafrost Regions In Transition: Introduction

Geography, Environment, Sustainability, 2021
Russian permafrost regions are unparalleled in extent, history of development, population presence, and the scale of economic activities. This special issue, «Permafrost Regions in Transition», provides a timely opportunity to (a) examine major issues ...
Dmitry A. Streletskiy, Alexey A. Maslakov, Irina D. Streletskaya, Frederick E. Nelson   +3 more
doaj   +1 more source

Response of Permafrost Thermal State to Global Climatic Change in Urbanised Landscapes, Yakutsk, Russia

Land, 2022
A study was undertaken to investigate the structure and condition of urban permafrost in the city of Yakutsk. The response of permafrost to recent climate change was assessed for a Shergin Shaft site in a cryogenic landscape.
Viktor V. Kunitsky, Igor I. Syromyatnikov, Andrey V. Litovko   +2 more
doaj   +1 more source

Detection of Geocryological Conditions in Boreal Landscapes of the Southern Cryolithozone Using Thermal Infrared Remote Sensing Data: A Case Study of the Northern Part of the Yenisei Ridge

Remote Sensing, 2023
This paper discusses the potential of using infrared remote sensing data to determine geocryological conditions in the northern part of the Yenisei Ridge in Russia. Landsat-8 thermal infrared images and land surface data were used for our analysis.
Alexey Medvedkov, Anna Vysotskaya, Alexander Olchev   +2 more
doaj   +1 more source

Modeling the spatiotemporal variability in subsurface thermal regimes across a low-relief polygonal tundra landscape [PDF]

The Cryosphere, 2016
Vast carbon stocks stored in permafrost soils of Arctic tundra are under risk of release to the atmosphere under warming climate scenarios. Ice-wedge polygons in the low-gradient polygonal tundra create a complex mosaic of microtopographic features ...
J. Kumar, N. Collier, G. Bisht, R. T. Mills, P. E. Thornton, C. M. Iversen, V. Romanovsky   +6 more
doaj   +1 more source

Icings and groundwater conditions in permafrost catchments of northwestern Canada

Scientific Reports, 2020
Icings are sheet-like masses of ice that form on the ground surface or in fluvial channels from groundwater seepage. Although the presence of icings in the landscape is known, few studies investigated their regional distribution and explored relations ...
Hugo Crites, Steve V. Kokelj, Denis Lacelle   +2 more
doaj   +1 more source

MULTI-SCALE LANDSCAPE MAPPING OF THE TYUMEN REGION AS A GEOINFORMATION BASE FOR ORGANIZATION OF LANDSCAPE PLANNING, ENVIRONMENTAL MANAGEMENT AND REGIONAL SUSTAINABLE DEVELOPMENT

InterCarto. InterGIS, 2016
Landscape analysis is considered with the following items: 1) a synthetic layer integral physiographic information about the natural environment; 2) an information basis for mapping and evaluation components of landscapes; 3) a basis for the assessment ...
I. R. Idrisov, V. V. Kozin, A. V. Marshinin, D. M. Marinskikh   +3 more
doaj   +1 more source

Diversity and potential activity of methanotrophs in high methane-emitting permafrost thaw ponds. [PDF]

PLoS ONE, 2017
Lakes and ponds derived from thawing permafrost are strong emitters of carbon dioxide and methane to the atmosphere, but little is known about the methane oxidation processes in these waters.
Sophie Crevecoeur, Warwick F Vincent, Jérôme Comte, Alex Matveev, Connie Lovejoy   +4 more
doaj   +1 more source

Divergent Spatiotemporal Patterns and Climate Responses of Lateral and Internal Lake Drainage in the Northern Permafrost Region

Geophysical Research Letters
Lake drainage is a key manifestation of permafrost degradation with implications for hydrology, landscape dynamics and carbon feedbacks. Lake drainage occurs through two distinct mechanisms, namely lateral drainage and internal drainage.
Xiaolong Yang, Aobo Liu, Yating Chen
doaj   +1 more source

InSAR-derived seasonal subsidence reflects spatial soil moisture patterns in Arctic lowland permafrost regions [PDF]

The Cryosphere
The identification of spatial soil moisture patterns is of high importance for various applications in high-latitude permafrost regions but challenging with common remote sensing approaches due to high landscape heterogeneity.
B. Widhalm, B. Widhalm, A. Bartsch, A. Bartsch, T. Strozzi, N. Jones, A. Khomutov, E. Babkina, M. Leibman, R. Khairullin, M. Göckede, H. Bergstedt, H. Bergstedt, C. von Baeckmann, C. von Baeckmann, X. Muri, X. Muri   +16 more
doaj   +1 more source