A5000313184- Arctic and Antarctic ice dynamics
- Marine animal studies overview
- Cryospheric studies and observations
- Climate change and permafrost
- Food Industry and Aquatic Biology
- Methane Hydrates and Related Phenomena
- Indigenous Studies and Ecology
- Marine and fisheries research
- Arctic and Russian Policy Studies
- Climate variability and models
- Identification and Quantification in Food
- Geology and Paleoclimatology Research
- Marine Bivalve and Aquaculture Studies
- Genetic diversity and population structure
- Virology and Viral Diseases
- Coastal and Marine Management
- Data Management and Algorithms
- Atmospheric chemistry and aerosols
- Microbial infections and disease research
- Atmospheric and Environmental Gas Dynamics
- Aeolian processes and effects
- Toxoplasma gondii Research Studies
- Geological Studies and Exploration
- Marine and environmental studies
- Isotope Analysis in Ecology
Severtsov Institute of Ecology and Evolution
2002-2024
Russian Academy of Sciences
2003-2014
Melt onset dates, freeze and melt season duration were estimated over Arctic sea ice, 1979–2001, using passive microwave satellite imagery surface air temperature data. Sea ice for the entire Northern Hemisphere varied from a 104-day minimum in 1983 1996 to 124-day maximum 1989. Ranges highest peripheral seas, numbering 32, 42, 44, 51 days Laptev, Barents-Kara, East Siberian, Chukchi Seas, respectively. In Ocean, average 75-day 1987 103-day On average, annual began 10.6 earlier than...
Abstract Forestalling the decline of global biodiversity requires urgent and transformative action at all levels government society, particularly in Arctic Ocean adjacent seas where rapid changes are already underway. Amid growing scientific support mounting pressure, majority nations have committed to most ambitious conservation targets yet. However, without an approach that inclusively equitably reconciles sustainable ocean use, these will likely go unmet. Here, we present ArcNet: a...
Spatial and temporal variations in the age structure of Arctic sea ice are investigated using a new reverse‐chronology algorithm that tracks ice‐covered pixels to their location date origin based on motion concentration data. The Beaufort Gyre tends harbor oldest (>10 years old) western while direct advection pathways toward Transpolar Drift Stream maintain relatively young (≤5 years) eastern Arctic. Persistent net losses (−4.2% yr −1 ) extent >10 old (10+ year class) were observed...
A 26‐year (1979–2004) observational record of January multiyear sea ice distributions, derived from neural network analysis SMMR‐SSM/I passive microwave satellite data, reveals dense and persistent cover in the central Arctic basin surrounded by expansive regions highly fluctuating interannual cover. Following a decade quasi equilibrium, precipitous declines area commenced 1989 when Oscillation shifted to pronounced positive phase. Although extensive survival first‐year during autumn 1996...
Abstract Sea ice thickness (SIT) is a key parameter of scientific interest because understanding the natural spatiotemporal variability critical for improving global climate models. In this paper, changes in Arctic SIT during 1982–2003 are examined using neural network (NN) algorithm trained with situ submarine draft and surface drilling data. For each month study period, NN individually estimated ice-covered pixel (25-km resolution) based on seven geophysical parameters (four shortwave...
Abstract The natural environment of the Arctic is changing rapidly owing to climate change. At same time in many countries including Russia region attracting growing attention decision‐makers and business communities. In light above it necessary protect biodiversity regional marine ecosystems most effective way possible, namely by establishing a network protected areas. Identifying conservation priority areas key step towards this goal. To achieve it, study based on systematic planning...
Arctic multiyear sea ice concentration maps for January 1988–2001 were generated from SSM/I brightness temperatures (19H, 19V, and 37V) using modified multiple layer perceptron neural networks. Learning data the networks extracted derived Okean ERS satellite imagery to capitalize on stability of active radar signatures. Evaluations three learning algorithms several topologies indicated that constructed with error back propagation 3‐20‐1 topology produced most consistent physically plausible...
Climate changes cause a dramatical increase in the ice-free season Arctic, forcing polar bears ashore, closer to human settlements associated with new and non-natural food objects. Such diet may crucially transform intestinal microbiome metabolism of bears. The aim this study was characterize gut bacterial fungal communities resulting from transition anthropogenic objects by means 16S ITS metabarcoding. Thus, rectal samples 16 wild Kara-Barents subpopulation were studied. Human waste...
Abstract Ringed ( Pusa hispida ) and bearded Erignathus barbatus seals are vulnerable to decreasing sea ice habitat in the rapidly warming Arctic. In April May of 2016, we conducted an aerial survey over ice-covered areas Chukchi Sea using thermal color cameras detect count these on ice. We related seal counts environmental variables, used relationships estimate species’ distributions abundance throughout Sea. accounted for incomplete detection due missed by sensors or image processing...