3 results on '"Ingeborg Hallanger"'
Search Results
2. A review of the scientific knowledge of the seascape off Dronning Maud Land, Antarctica
- Author
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Andrew Lowther, Cecilie von Quillfeldt, Philipp Assmy, Laura De Steur, Sebastien Descamps, Dmitry Divine, Synnøve Elvevold, Matthias Forwick, Agneta Fransson, Alexander Fraser, Sebastian Gerland, Mats Granskog, Ingeborg Hallanger, Tore Hattermann, Mikhail Itkin, Haakon Hop, Katrine Husum, Kit Kovacs, Christian Lydersen, Kenichi Matsuoka, Arto Miettinen, Geir Moholdt, Sebastien Moreau, Per Inge Myhre, Lisa Orme, Olga Pavlova, and Ann Helene Tandberg
- Subjects
General Agricultural and Biological Sciences - Abstract
Despite the exclusion of the Southern Ocean from assessments of progress towards achieving the Convention on Biological Diversity (CBD) Strategic Plan, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) has taken on the mantle of progressing efforts to achieve it. Within the CBD, Aichi Target 11 represents an agreed commitment to protect 10% of the global coastal and marine environment. Adopting an ethos of presenting the best available scientific evidence to support policy makers, CCAMLR has progressed this by designating two Marine Protected Areas in the Southern Ocean, with three others under consideration. The region of Antarctica known as Dronning Maud Land (DML; 20°W to 40°E) and the Atlantic sector of the Southern Ocean that abuts it conveniently spans one region under consideration for spatial protection. To facilitate both an open and transparent process to provide the vest available scientific evidence for policy makers to formulate management options, we review the body of physical, geochemical and biological knowledge of the marine environment of this region. The level of scientific knowledge throughout the seascape abutting DML is polarized, with a clear lack of data in its eastern part which is presumably related to differing levels of research effort dedicated by national Antarctic programmes in the region. The lack of basic data on fundamental aspects of the physical, geological and biological nature of eastern DML make predictions of future trends difficult to impossible, with implications for the provision of management advice including spatial management. Finally, by highlighting key knowledge gaps across the scientific disciplines our review also serves to provide guidance to future research across this important region.
- Published
- 2022
3. The influence of global climate change on accumulation and toxicity of persistent organic pollutants and chemicals of emerging concern in Arctic food webs
- Author
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Katrine Borgå, Melissa A. McKinney, Heli Routti, Kim J. Fernie, Julia Giebichenstein, Ingeborg Hallanger, and Derek C. G. Muir
- Subjects
Persistent Organic Pollutants ,Food Chain ,Arctic Regions ,Climate Change ,Public Health, Environmental and Occupational Health ,Water ,Environmental Chemistry ,Environmental Pollutants ,General Medicine ,Management, Monitoring, Policy and Law ,Ecosystem ,Water Pollutants, Chemical ,Environmental Monitoring - Abstract
This review summarizes current understanding of how climate change-driven physical and ecological processes influence the levels of persistent organic pollutants (POPs) and contaminants of emerging Arctic concern (CEACs) in Arctic biota and food webs. The review also highlights how climate change may interact with other stressors to impact contaminant toxicity, and the utility of modeling and newer research tools in closing knowledge gaps on climate change-contaminant interactions. Permafrost thaw is influencing the concentrations of POPs in freshwater ecosystems. Physical climate parameters, including climate oscillation indices, precipitation, water salinity, sea ice age, and sea ice quality show statistical associations with POPs concentrations in multiple Arctic biota. Northward range-shifting species can act as biovectors for POPs and CEACs into Arctic marine food webs. Shifts in trophic position can alter POPs concentrations in populations of Arctic species. Reductions in body condition are associated with increases in levels of POPs in some biota. Although collectively understudied, multiple stressors, including contaminants and climate change, may act to cumulatively impact some populations of Arctic biota. Models are useful for predicting the net result of various contrasting climate-driven processes on POP and CEAC exposures; however, for some parameters, especially food web changes, insufficient data exists with which to populate such models. In addition to the impact of global regulations on POP levels in Arctic biota, this review demonstrates that there are various direct and indirect mechanisms by which climate change can influence contaminant exposure, accumulation, and effects; therefore, it is important to attribute POP variations to the actual contributing factors to inform future regulations and policies. To do so, a broad range of habitats, species, and processes must be considered for a thorough understanding and interpretation of the consequences to the distribution, accumulation, and effects of environmental contaminants. Given the complex interactions between climate change, contaminants, and ecosystems, it is important to plan for long-term, integrated pan-Arctic monitoring of key biota and ecosystems, and to collect ancillary data, including information on climate-related parameters, local meteorology, ecology, and physiology, and when possible, behavior, when carrying out research on POPs and CEACs in biota and food webs of the Arctic.
- Published
- 2022
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