Skip header and navigation

Refine By

1003 records – page 1 of 101.

Global monitoring of wetlands--the value of ENVISAT ASAR Global mode.

https://arctichealth.org/en/permalink/ahliterature95556
Source
J Environ Manage. 2009 May;90(7):2226-33
Publication Type
Article
Date
May-2009
Author
Bartsch A.
Wagner W.
Scipal K.
Pathe C.
Sabel D.
Wolski P.
Author Affiliation
Institute of Photogrammetry and Remote Sensing, Vienna University of Technology, Gusshausstrasse 27-29, Vienna, Austria. ab@ipf.tuwien.ac.at
Source
J Environ Manage. 2009 May;90(7):2226-33
Date
May-2009
Language
English
Publication Type
Article
Keywords
Environmental Monitoring - methods
Satellite Communications
Wetlands
Abstract
This paper elaborates on recent advances in the use of ScanSAR technologies for wetland-related research. Applications of active satellite radar systems include the monitoring of inundation dynamics as well as time series analyses of surface soil wetness. For management purposes many wetlands, especially those in dry regions, need to be monitored for short and long-term changes. Another application of these technologies is monitoring the impact of climate change in permafrost transition zones where peatlands form one of the major land cover types. Therefore, examples from boreal and subtropical environments are presented using the analysed ENVISAT ASAR Global mode (GM, 1 km resolution) data acquired in 2005 and 2006. In the case of the ENVISAT ASAR instrument, data availability of the rather coarse Global Mode depends on request priorities of other competing modes, but acquisition frequency may still be on average fortnightly to monthly depending on latitude. Peatland types covering varying permafrost regimes of the West Siberian Lowlands can be distinguished from each other and other land cover by multi-temporal analyses. Up to 75% of oligotrophic bogs can be identified in the seasonal permafrost zone in both years. The high seasonal and inter-annual dynamics of the subtropic Okavango Delta can also be captured by GM time series. Response to increased precipitation in 2006 differs from flood propagation patterns. In addition, relative soil moisture maps may provide a valuable data source in order to account for external hydrological factors of such complex wetland ecosystems.
PubMed ID
18343560 View in PubMed
Less detail

Recent mild and wet years in relation to long observation records and future climate change in Sweden.

https://arctichealth.org/en/permalink/ahliterature95848
Source
Ambio. 2004 Jun;33(4-5):183-6
Publication Type
Article
Date
Jun-2004
Author
Lindström Göran
Alexandersson Hans
Author Affiliation
Department of Research and Development, Swedish Meteorological and Hydrological Institute, Norrköping. goran.lindstrom@smhi.se
Source
Ambio. 2004 Jun;33(4-5):183-6
Date
Jun-2004
Language
English
Publication Type
Article
Keywords
Climate
Environmental Monitoring - methods
Rain
Sweden
Temperature
Abstract
Recent mild and wet years in Sweden were compared with long observation series of temperature, precipitation and runoff. Spatial average series for northern and southern Sweden were constructed and analyzed for the period 1901-2002. Precipitation increased considerably during the period, whereas temperature and runoff increases were weaker. On average, for the whole country, the differences between the period 1991-2002 and 1901-1990 were +0.7 degrees C for temperature, +11% in precipitation and +7% in runoff. The differences in temperature and precipitation, but not runoff, were significant at the 5% level. However, the 1930s were equally mild, and the runoff was almost as high in the 1920s. The characteristic feature of the past decade is the combination of high temperature, precipitation and runoff. The deviation between the most recent decade and the preceding years is consistent with climate scenario projections for Sweden, but there are also differences in the seasonal pattern.
PubMed ID
15264595 View in PubMed
Less detail

Leveraging constraints and biotelemetry data to pinpoint repetitively used spatial features.

https://arctichealth.org/en/permalink/ahliterature295774
Source
Ecology. 2017 Jan; 98(1):12-20
Publication Type
Journal Article
Date
Jan-2017
Author
Brian M Brost
Mevin B Hooten
Robert J Small
Author Affiliation
Department of Fish, Wildlife, and Conservation Biology, Colorado State University, 1474 Campus Delivery, Fort Collins, Colorado, 80523, USA.
Source
Ecology. 2017 Jan; 98(1):12-20
Date
Jan-2017
Language
English
Publication Type
Journal Article
Keywords
Alaska
Animals
Ecology
Environmental Monitoring - methods
Phoca
Telemetry
Abstract
Satellite telemetry devices collect valuable information concerning the sites visited by animals, including the location of central places like dens, nests, rookeries, or haul-outs. Existing methods for estimating the location of central places from telemetry data require user-specified thresholds and ignore common nuances like measurement error. We present a fully model-based approach for locating central places from telemetry data that accounts for multiple sources of uncertainty and uses all of the available locational data. Our general framework consists of an observation model to account for large telemetry measurement error and animal movement, and a highly flexible mixture model specified using a Dirichlet process to identify the location of central places. We also quantify temporal patterns in central place use by incorporating ancillary behavioral data into the model; however, our framework is also suitable when no such behavioral data exist. We apply the model to a simulated data set as proof of concept. We then illustrate our framework by analyzing an Argos satellite telemetry data set on harbor seals (Phoca vitulina) in the Gulf of Alaska, a species that exhibits fidelity to terrestrial haul-out sites.
PubMed ID
27935016 View in PubMed
Less detail

[Problems in the regional sociohygienic monitoring of the population's health].

https://arctichealth.org/en/permalink/ahliterature161645
Source
Gig Sanit. 2007 Jul-Aug;(4):87-8
Publication Type
Article

Environmental history: a piece in the puzzle for establishing plans for environmental management.

https://arctichealth.org/en/permalink/ahliterature89220
Source
J Environ Manage. 2009 Jun;90(8):2794-800
Publication Type
Article
Date
Jun-2009
Author
Renberg Ingemar
Bigler Christian
Richard Bindler
Matilda Norberg
Johan Rydberg
Ulf Segerström
Author Affiliation
Department of Ecology and Environmental Science, Umeå University, Umeå, Sweden. ingemar.renberg@emg.umu.se
Source
J Environ Manage. 2009 Jun;90(8):2794-800
Date
Jun-2009
Language
English
Publication Type
Article
Keywords
Biodiversity
Conservation of Natural Resources - methods
Environmental Monitoring - methods
Abstract
Establishment of plans for environmental planning and management requires that a number of natural and societal factors must be taken into consideration. Insights into the inherent dynamics of nature as well as the role that past human activities have played for establishing the current condition of the landscape and the natural environment in general are essential. Many natural and man-made changes occur over time scales of decades or centuries, and these are difficult to comprehend without a historical perspective. Such a perspective can be obtained using palaeoecological studies, i.e. by geochemical and biological analyses of lake sediment and peat deposits. To illustrate the long-term dynamics of nature and particularly the role of man, we present here five case studies from Sweden concerning pollution, lake acidification, lake eutrophication, biodiversity, and landscape dynamics and conservation--topics of broad interests--and discuss benefits of including a longer time perspective in environmental management.
PubMed ID
19395150 View in PubMed
Less detail

Isomer-specific biological monitoring of polychlorinated biphenyls.

https://arctichealth.org/en/permalink/ahliterature234099
Source
Scand J Work Environ Health. 1988;14 Suppl 1:60-2
Publication Type
Article
Date
1988
Author
M. Luotamo
Author Affiliation
Laboratory of Biochemistry, Institute of Occupational Health, Helsinki, Finland.
Source
Scand J Work Environ Health. 1988;14 Suppl 1:60-2
Date
1988
Language
English
Publication Type
Article
Keywords
Environmental Monitoring - methods
Finland
Humans
Isomerism
Polychlorinated biphenyls - blood
PubMed ID
3134691 View in PubMed
Less detail

The Dynamics of Greenland's Glacial Fjords and Their Role in Climate.

https://arctichealth.org/en/permalink/ahliterature274749
Source
Ann Rev Mar Sci. 2015;7:89-112
Publication Type
Article
Date
2015
Author
Fiamma Straneo
Claudia Cenedese
Source
Ann Rev Mar Sci. 2015;7:89-112
Date
2015
Language
English
Publication Type
Article
Keywords
Climate change
Environmental Monitoring - methods
Estuaries
Greenland
Ice Cover
Abstract
Rapid mass loss from the Greenland Ice Sheet has sparked interest in its glacial fjords for two main reasons: Increased submarine melting of glaciers terminating in fjords is a plausible trigger for glacier retreat, and the anomalous freshwater discharged from Greenland is transformed by fjord processes before being released into the large-scale ocean. Knowledge of the fjords' dynamics is thus key to understanding ice sheet variability and its impact on climate. Although Greenland's fjords share some commonalities with other fjords, their deep sills and deeply grounded glaciers, the presence of Atlantic and Polar Waters on the continental shelves outside the fjords' mouths, and the seasonal discharge at depth of large amounts of surface melt make them unique systems that do not fit existing paradigms. Major gaps in understanding include the interaction of the buoyancy-driven circulation (forced by the glacier) and shelf-driven circulation, and the dynamics in the near-ice zone. These must be addressed before appropriate forcing conditions can be supplied to ice sheet and ocean/climate models.
PubMed ID
25149564 View in PubMed
Less detail

[Ecological and hygienic problems of nanotech progress].

https://arctichealth.org/en/permalink/ahliterature118058
Source
Gig Sanit. 2012 Sep-Oct;(5):8-11
Publication Type
Article
Author
N I Latyshevskaia
A S Strekalova
Source
Gig Sanit. 2012 Sep-Oct;(5):8-11
Language
Russian
Publication Type
Article
Keywords
Environmental Monitoring - methods
Humans
Hygiene - standards
Nanotechnology - trends
Russia
Abstract
In article necessity of development of new directions of researches--nanoecology (ecology of nanoindustry) and nanohygiene (hygiene of nanotechnologies and nanomaterials) is proved. On the basis of the spent review key ecological and hygienic problems of nanoindustrial development are systematized and also debatable questions are allocated. The conclusion is drawn on necessity of an intensification of studying of ecological and hygienic aspects of nanotechnologies and nanomaterials.
PubMed ID
23243708 View in PubMed
Less detail

[Sanitary-and-epidemiological control of the quality of dairy foods].

https://arctichealth.org/en/permalink/ahliterature164791
Source
Gig Sanit. 2007 Jan-Feb;(1):48-50
Publication Type
Article
Author
N V Anisimova
O V Karpova
Source
Gig Sanit. 2007 Jan-Feb;(1):48-50
Language
Russian
Publication Type
Article
Keywords
Dairy Products - standards
Environmental Monitoring - methods
Health status
Humans
Russia
Abstract
At the Federal state health facility of the Perm Region--the Center of Hygiene and Epidemiology, the authors have carried out chemical and bacteriological tests (n = 410) of 70 raw milk samples taken at various points of sale to examine for compliance with the standards stimulated in the normative SanPin documents. The conventional methods were used to study a number of chemical, biochemical, and bacteriological parameters that characterized freshness, density, acidity, the content of toxic elements, mycotoxins, antibiotics, pesticides, radionuclides, the total number of microbes, etc. The quality and nutritive value of the test milk were characterized according to the findings. The main conclusion of the study was that in quite a number of cases, analyses of the private farm milk sold by farmers on the municipal markets and unpretested by the specialists of the territorial Russian consumer supervisory boards revealed that it was not up to the standards for the quality of the product itself and the material of its package. Unexposed to heat treatment, raw milk should not be used since it may occasionally adversely affect human health.
PubMed ID
17343054 View in PubMed
Less detail

The environmental specimen bank, Swedish Museum of Natural History-a base for contaminant monitoring and environmental research.

https://arctichealth.org/en/permalink/ahliterature81159
Source
J Environ Monit. 2006 Aug;8(8):791-4
Publication Type
Article
Date
Aug-2006
Author
Odsjö Tjelvar
Author Affiliation
Contaminant Research Group, Swedish Museum of Natural History, SE-104 05, Stockholm, Sweden.
Source
J Environ Monit. 2006 Aug;8(8):791-4
Date
Aug-2006
Language
English
Publication Type
Article
Keywords
Animals
Environmental Monitoring - methods
Environmental Pollutants - analysis
Specimen Handling
Sweden
PubMed ID
16896461 View in PubMed
Less detail

1003 records – page 1 of 101.