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Margareta Johansson

Dados Biográficos

ID3608454
NOMEMargareta Johansson
PRENOMESMargareta
SOBRENOMEJohansson
ASSINATURAJOHANSSON M
AFILIAÇÕESLund University
ORCID0000-0001-9650-7153
VERIFICADOSim
TOTAL DE OBRAS40
TOTAL DE CITAÇÕES156
TOTAL COMO AUTOR40
TOTAL COMO EDITOR0
PRIMEIRO ANO DE PUBLICAÇÃO2004
ANO MAIS RECENTE DE PUBLICAÇÃO2025
ÍNDICE H7
  • The rise and fall of science diplomacy in the Arctic

    Open Access•Margareta Johansson, Terry V Callaghan•ARTICLE•Polar Record•2025•Citada por: 1•Referências: 26

    At a time of increasing environmental changes and geopolitical tensions, the need for collaboration in the Arctic is greater than ever. Top-down initiatives such as the Arctic Council have contributed to important increased collaboration and science diplomacy. Similarly, bottom-up initiatives have also played a major role in establishing diplomacy among researchers with spin-offs at government levels. We track the rise of science diplomacy achiev…

  • Support Needs, Barriers, and Facilitators for Fathers With Fear of Childbirth in Sweden

    Open Access•Carita Nordin-Remberger, Margareta Johansson et al.•ARTICLE•American Journal of Men s Health•2024

    The aim of this mixed-method study was to identify support needs, as well as barriers and facilitators to seeking support in a sample of Swedish fathers with a fear of childbirth (FOC). Participants completed an anonymous quantitative online survey ( N = 131), with three free-text items for those self-identifying as having an FOC ( N = 71) and five individual in-depth interviews. Data analysis included descriptive and chi-square analyses for quan…

  • Sustaining Arctic Observing Networks’ (Saon) Roadmap for Arctic Observing and Data Systems (Roads)

    Open Access•Sarah Starkweather, Jan René Larsen et al.•ARTICLE•ARCTIC•2022

    Arctic observing and data systems have been widely recognized as critical infrastructures to support decision making and understanding across sectors in the Arctic and globally. Yet due to broad and persistent issues related to coordination, deployment infrastructure and technology gaps, the Arctic remains among the most poorly observed regions on the planet from the standpoint of conventional observing systems. Sustaining Arctic Observing Networ…

  • The rise of the Arctic

    Open Access•Terry V Callaghan, Margareta Johansson•ARTICLE•AMBIO•2021•Citada por: 3•Referências: 6

  • The missing pieces for better future predictions in subarctic ecosystems

    Open Access•Yinan He, Didac Pascual et al.•ARTICLE•AMBIO•2021•Referências: 70

    Arctic and subarctic ecosystems are experiencing substantial changes in hydrology, vegetation, permafrost conditions, and carbon cycling, in response to climatic change and other anthropogenic drivers, and these changes are likely to continue over this century. The total magnitude of these changes results from multiple interactions among these drivers. Field measurements can address the overall responses to different changing drivers, but are les…

  • Mothers' experiences of pain during breastfeeding in the early postnatal period

    Open Access•Margareta Johansson, Jennifer Fenwick et al.•ARTICLE•American Journal of Human Biology•2020

    OBJECTIVES: The objective was to investigate the prevalence of mothers who experienced pain during breastfeeding in the early postnatal period and to describe associated factors. METHODS: Medical records of 987 mothers and their babies were scrutinized. Chi-square Test, McNemar's test, and relative risk with a 95% confidence interval were applied for analysis. RESULTS: During the in-hospital postnatal stay, 19.5% mothers experienced pain during b…

  • Improving dialogue among researchers, local and indigenous peoples and decision-makers to address issues of climate change in the North

    Open Access•Terry V Callaghan, Olga Kulikova et al.•ARTICLE•AMBIO•2020•Citada por: 12•Referências: 42

    The Circumpolar North has been changing rapidly within the last decades, and the socioeconomic systems of the Eurasian Arctic and Siberia in particular have displayed the most dramatic changes. Here, anthropogenic drivers of environmental change such as migration and industrialization are added to climate-induced changes in the natural environment such as permafrost thawing and increased frequency of extreme events. Understanding and adapting to …

  • Permafrost is warming at a global scale

    Open Access•Boris K Biskaborn, Sharon L Smith et al.•ARTICLE•Nature Communications•2019

    Permafrost warming has the potential to amplify global climate change, because when frozen sediments thaw it unlocks soil organic carbon. Yet to date, no globally consistent assessment of permafrost temperature change has been compiled. Here we use a global data set of permafrost temperature time series from the Global Terrestrial Network for Permafrost to evaluate temperature change across permafrost regions for the period since the Internationa…

  • The Permafrost Young Researchers Network (Pyrn) is getting older

    Open Access•George Tanski, Helena Bergstedt et al.•ARTICLE•Polar Record•2019•Citada por: 1•Referências: 7

    A lasting legacy of the International Polar Year (IPY) 2007–2008 was the promotion of the Permafrost Young Researchers Network (PYRN), initially an IPY outreach and education activity by the International Permafrost Association (IPA). With the momentum of IPY, PYRN developed into a thriving network that still connects young permafrost scientists, engineers, and researchers from other disciplines. This research note summarises (1) PYRN’s developme…

  • Changing Arctic snow cover

    Open Access•Stef Bokhorst, Stine Højlund Pedersen et al.•ARTICLE•AMBIO•2016

    Snow is a critically important and rapidly changing feature of the Arctic. However, snow-cover and snowpack conditions change through time pose challenges for measuring and prediction of snow. Plausible scenarios of how Arctic snow cover will respond to changing Arctic climate are important for impact assessments and adaptation strategies. Although much progress has been made in understanding and predicting snow-cover changes and their multiple c…

  • Rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic Sweden

    Open Access•Margareta Johansson, Terry V Callaghan et al.•ARTICLE•Environmental Research Letters•2013

    Increased snow depth already observed, and that predicted for the future are of critical importance to many geophysical and biological processes as well as human activities. The future characteristics of sub-arctic landscapes where permafrost is particularly vulnerable will depend on complex interactions between snow cover, vegetation and permafrost. An experimental manipulation was, therefore, set up on a lowland peat plateau with permafrost, in…

  • The Man, the Myth, the Legend

    Open Access•Margareta Johansson, Christer Jonasson et al.•ARTICLE•AMBIO•2012•Citada por: 2•Referências: 13

  • Post Scriptum

    Open Access•Torben R Christensen, Margareta Johansson et al.•ARTICLE•AMBIO•2012

  • Multiple Effects of Changes in Arctic Snow Cover

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 7•Referências: 76

  • The Changing Face of Arctic Snow Cover

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 17•Referências: 48

  • Arctic Cryosphere

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 7•Referências: 11

  • Feedbacks and Interactions

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 5•Referências: 61

  • Ecological Implications of Changes in the Arctic Cryosphere

    Open Access•Warwick F Vincent, Terry V Callaghan et al.•ARTICLE•AMBIO•2011•Citada por: 5•Referências: 57

  • Multi-Decadal Changes in Tundra Environments and Ecosystems

    Open Access•Terry V Callaghan, C E Tweedie et al.•ARTICLE•AMBIO•2011•Citada por: 6•Referências: 63

  • The Changing Arctic Cryosphere and Likely Consequences

    Open Access•M S Olsen, Terry V Callaghan et al.•ARTICLE•AMBIO•2011•Citada por: 3•Referências: 10

  • Past and Present Permafrost Temperatures in the Abisko Area

    Open Access•Margareta Johansson, Jonas Akerman et al.•ARTICLE•AMBIO•2011•Citada por: 2•Referências: 17

  • What Determines the Current Presence or Absence of Permafrost in the Torneträsk Region, a Sub-arctic Landscape in Northern Sweden

    Margareta Johansson, Torben R Christensen et al.•ARTICLE•AMBIO•2006•Citada por: 4•Referências: 29

    In a warming climate, permafrost is likely to be significantly reduced and eventually disappear from the sub-Arctic region. This will affect people at a range of scales, from locally by slumping of buildings and roads, to globally as melting of permafrost will most likely increase the emissions of the powerful greenhouse gas methane, which will further enhance global warming. In order to predict future changes in permafrost, it is crucial to unde…

  • Uncertainties and Recommendations

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 4

    An assessment of the impacts of changes in climate and UV-B radiation on Arctic terrestrial ecosystems, made within the Arctic Climate Impacts Assessment (ACIA), highlighted the profound implications of projected warming in particular for future ecosystem services, biodiversity and feedbacks to climate. However, although our current understanding of ecological processes and changes driven by climate and UV-B is strong in some geographical areas a…

  • Past Changes in Arctic Terrestrial Ecosystems, Climate and UV Radiation

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Referências: 64

    At the last glacial maximum, vast ice sheets covered many continental areas. The beds of some shallow seas were exposed thereby connecting previously separated landmasses. Although some areas were ice-free and supported a flora and fauna, mean annual temperatures were 10–13°C colder than during the Holocene. Within a few millennia of the glacial maximum, deglaciation started, characterized by a series of climatic fluctuations between about 18 000…

  • Rationale, Concepts and Approach to the Assessment

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 7

Próximo
  • Biodiversity, Distributions and Adaptations of Arctic Species in the Context of Environmental Change

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 19

    The individual of a species is the basic unit which responds to climate and UV-B changes, and it responds over a wide range of time scales. The diversity of animal, plant and microbial species appears to be low in the Arctic, and decreases from the boreal forests to the polar deserts of the extreme North but primitive species are particularly abundant. This latitudinal decline is associated with an increase in super-dominant species that occupy a…

  • The Changing Face of Arctic Snow Cover

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 17•Referências: 48

  • Improving dialogue among researchers, local and indigenous peoples and decision-makers to address issues of climate change in the North

    Open Access•Terry V Callaghan, Olga Kulikova et al.•ARTICLE•AMBIO•2020•Citada por: 12•Referências: 42

    The Circumpolar North has been changing rapidly within the last decades, and the socioeconomic systems of the Eurasian Arctic and Siberia in particular have displayed the most dramatic changes. Here, anthropogenic drivers of environmental change such as migration and industrialization are added to climate-induced changes in the natural environment such as permafrost thawing and increased frequency of extreme events. Understanding and adapting to …

  • Effects of Changes in Climate on Landscape and Regional Processes, and Feedbacks to the Climate System

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 12

    Biological and physical processes in the Arctic system operate at various temporal and spatial scales to impact large-scale feedbacks and interactions with the earth system. There are four main potential feedback mechanisms between the impacts of climate change on the Arctic and the global climate system: albedo, greenhouse gas emissions or uptake by ecosystems, greenhouse gas emissions from methane hydrates, and increased freshwater fluxes that …

  • Effects on the Function of Arctic Ecosystems in the Short- and Long-term Perspectives

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 11

    Historically, the function of Arctic ecosystems in terms of cycles of nutrients and carbon has led to low levels of primary production and exchanges of energy, water and greenhouse gases have led to low local and regional cooling. Sequestration of carbon from atmospheric CO2, in extensive, cold organic soils and the high albedo from low, snow-covered vegetation have had impacts on regional climate. However, many aspects of the functioning of Arct…

  • Effects on the Structure of Arctic Ecosystems in the Short- and Long-term Perspectives

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 9

    Historically, the function of Arctic ecosystems in terms of cycles of nutrients and carbon has led to low levels of primary production and exchanges of energy, water and greenhouse gases have led to low local and regional cooling. Sequestration of carbon from atmospheric CO2, in extensive, cold organic soils and the high albedo from low, snow-covered vegetation have had impacts on regional climate. However, many aspects of the functioning of Arct…

  • Multiple Effects of Changes in Arctic Snow Cover

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 7•Referências: 76

  • Arctic Cryosphere

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 7•Referências: 11

  • Rationale, Concepts and Approach to the Assessment

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 7

  • Responses to Projected Changes in Climate and UV-B at the Species Level

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 7

    Environmental manipulation experiments showed that species respond individualistically to each environmental-change variable. The greatest responses of plants were generally to nutrient, particularly nitrogen, addition. Summer warming experiments showed that woody plant responses were dominant and that mosses and lichens became less abundant. Responses to warming were controlled by moisture availability and snow cover. Many invertebrates increase…

  • Multi-Decadal Changes in Tundra Environments and Ecosystems

    Open Access•Terry V Callaghan, C E Tweedie et al.•ARTICLE•AMBIO•2011•Citada por: 6•Referências: 63

  • Past Changes in Arctic Terrestrial Ecosystems, Climate and UV Radiation

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 6

    At the last glacial maximum, vast ice sheets covered many continental areas. The beds of some shallow seas were exposed thereby connecting previously separated landmasses. Although some areas were ice-free and supported a flora and fauna, mean annual temperatures were 10-13 degrees C colder than during the Holocene. Within a few millennia of the glacial maximum, deglaciation started, characterized by a series of climatic fluctuations between abou…

  • Feedbacks and Interactions

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 5•Referências: 61

  • Ecological Implications of Changes in the Arctic Cryosphere

    Open Access•Warwick F Vincent, Terry V Callaghan et al.•ARTICLE•AMBIO•2011•Citada por: 5•Referências: 57

  • Synthesis of Effects in Four Arctic Subregions

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 5

    An assessment of impacts on Arctic terrestrial ecosystems has emphasized geographical variability in responses of species and ecosystems to environmental change. This variability is usually associated with north-south gradients in climate, biodiversity, vegetation zones, and ecosystem structure and function. It is clear, however, that significant east-west variability in environment, ecosystem structure and function, environmental history, and re…

  • What Determines the Current Presence or Absence of Permafrost in the Torneträsk Region, a Sub-arctic Landscape in Northern Sweden

    Margareta Johansson, Torben R Christensen et al.•ARTICLE•AMBIO•2006•Citada por: 4•Referências: 29

    In a warming climate, permafrost is likely to be significantly reduced and eventually disappear from the sub-Arctic region. This will affect people at a range of scales, from locally by slumping of buildings and roads, to globally as melting of permafrost will most likely increase the emissions of the powerful greenhouse gas methane, which will further enhance global warming. In order to predict future changes in permafrost, it is crucial to unde…

  • Uncertainties and Recommendations

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 4

    An assessment of the impacts of changes in climate and UV-B radiation on Arctic terrestrial ecosystems, made within the Arctic Climate Impacts Assessment (ACIA), highlighted the profound implications of projected warming in particular for future ecosystem services, biodiversity and feedbacks to climate. However, although our current understanding of ecological processes and changes driven by climate and UV-B is strong in some geographical areas a…

  • The rise of the Arctic

    Open Access•Terry V Callaghan, Margareta Johansson•ARTICLE•AMBIO•2021•Citada por: 3•Referências: 6

  • The Changing Arctic Cryosphere and Likely Consequences

    Open Access•M S Olsen, Terry V Callaghan et al.•ARTICLE•AMBIO•2011•Citada por: 3•Referências: 10

  • The Man, the Myth, the Legend

    Open Access•Margareta Johansson, Christer Jonasson et al.•ARTICLE•AMBIO•2012•Citada por: 2•Referências: 13

  • Past and Present Permafrost Temperatures in the Abisko Area

    Open Access•Margareta Johansson, Jonas Akerman et al.•ARTICLE•AMBIO•2011•Citada por: 2•Referências: 17

  • The rise and fall of science diplomacy in the Arctic

    Open Access•Margareta Johansson, Terry V Callaghan•ARTICLE•Polar Record•2025•Citada por: 1•Referências: 26

    At a time of increasing environmental changes and geopolitical tensions, the need for collaboration in the Arctic is greater than ever. Top-down initiatives such as the Arctic Council have contributed to important increased collaboration and science diplomacy. Similarly, bottom-up initiatives have also played a major role in establishing diplomacy among researchers with spin-offs at government levels. We track the rise of science diplomacy achiev…

  • The Permafrost Young Researchers Network (Pyrn) is getting older

    Open Access•George Tanski, Helena Bergstedt et al.•ARTICLE•Polar Record•2019•Citada por: 1•Referências: 7

    A lasting legacy of the International Polar Year (IPY) 2007–2008 was the promotion of the Permafrost Young Researchers Network (PYRN), initially an IPY outreach and education activity by the International Permafrost Association (IPA). With the momentum of IPY, PYRN developed into a thriving network that still connects young permafrost scientists, engineers, and researchers from other disciplines. This research note summarises (1) PYRN’s developme…

  • Key Findings and Extended Summaries

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 1

    TEST 02 - Elsevier's Scopus, the largest abstract and citation database of peer-reviewed literature. Search and access research from the science, technology, medicine, social sciences and arts and humanities fields

  • Uncertainties and Recommendations

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 4

    An assessment of the impacts of changes in climate and UV-B radiation on Arctic terrestrial ecosystems, made within the Arctic Climate Impacts Assessment (ACIA), highlighted the profound implications of projected warming in particular for future ecosystem services, biodiversity and feedbacks to climate. However, although our current understanding of ecological processes and changes driven by climate and UV-B is strong in some geographical areas a…

  • Past Changes in Arctic Terrestrial Ecosystems, Climate and UV Radiation

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Referências: 64

    At the last glacial maximum, vast ice sheets covered many continental areas. The beds of some shallow seas were exposed thereby connecting previously separated landmasses. Although some areas were ice-free and supported a flora and fauna, mean annual temperatures were 10–13°C colder than during the Holocene. Within a few millennia of the glacial maximum, deglaciation started, characterized by a series of climatic fluctuations between about 18 000…

  • Rationale, Concepts and Approach to the Assessment

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 7

  • Uncertainties and Recommendations

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Referências: 20

    An assessment of the impacts of changes in climate and UV-B radiation on Arctic terrestrial ecosystems, made within the Arctic Climate Impacts Assessment (ACIA), highlighted the profound implications of projected warming in particular for future ecosystem services, biodiversity and feedbacks to climate. However, although our current understanding of ecological processes and changes driven by climate and UV-B is strong in some geographical areas a…

  • Synthesis of Effects in Four Arctic Subregions

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 5

    An assessment of impacts on Arctic terrestrial ecosystems has emphasized geographical variability in responses of species and ecosystems to environmental change. This variability is usually associated with north-south gradients in climate, biodiversity, vegetation zones, and ecosystem structure and function. It is clear, however, that significant east-west variability in environment, ecosystem structure and function, environmental history, and re…

  • Responses to Projected Changes in Climate and UV-B at the Species Level

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Referências: 149

    Environmental manipulation experiments showed that species respond individualistically to each environmental-change variable. The greatest responses of plants were generally to nutrient, particularly nitrogen, addition. Summer warming experiments showed that woody plant responses were dominant and that mosses and lichens became less abundant. Responses to warming were controlled by moisture availability and snow cover. Many invertebrates increase…

  • Effects on the Structure of Arctic Ecosystems in the Short- and Long-term Perspectives

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 9

    Historically, the function of Arctic ecosystems in terms of cycles of nutrients and carbon has led to low levels of primary production and exchanges of energy, water and greenhouse gases have led to low local and regional cooling. Sequestration of carbon from atmospheric CO2, in extensive, cold organic soils and the high albedo from low, snow-covered vegetation have had impacts on regional climate. However, many aspects of the functioning of Arct…

  • Responses to Projected Changes in Climate and UV-B at the Species Level

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 7

    Environmental manipulation experiments showed that species respond individualistically to each environmental-change variable. The greatest responses of plants were generally to nutrient, particularly nitrogen, addition. Summer warming experiments showed that woody plant responses were dominant and that mosses and lichens became less abundant. Responses to warming were controlled by moisture availability and snow cover. Many invertebrates increase…

  • Past Changes in Arctic Terrestrial Ecosystems, Climate and UV Radiation

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 6

    At the last glacial maximum, vast ice sheets covered many continental areas. The beds of some shallow seas were exposed thereby connecting previously separated landmasses. Although some areas were ice-free and supported a flora and fauna, mean annual temperatures were 10-13 degrees C colder than during the Holocene. Within a few millennia of the glacial maximum, deglaciation started, characterized by a series of climatic fluctuations between abou…

  • Key Findings and Extended Summaries

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Referências: 9

  • Effects of Changes in Climate on Landscape and Regional Processes, and Feedbacks to the Climate System

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Referências: 88

    Biological and physical processes in the Arctic system operate at various temporal and spatial scales to impact large-scale feedbacks and interactions with the earth system. There are four main potential feedback mechanisms between the impacts of climate change on the Arctic and the global climate system: albedo, greenhouse gas emissions or uptake by ecosystems, greenhouse gas emissions from methane hydrates, and increased freshwater fluxes that …

  • Rationale, Concepts and Approach to the Assessment

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Referências: 27

    A general recognition that the Arctic will amplify global climate warming, that UV-B radiation may continue to increase there because of possible delays in the repair of stratospheric ozone, and that the Arctic environment and its peoples are likely to be particularly susceptible to such environmental changes stimulated an international assessment of climate change impacts. The Arctic Climate Impacts Assessment (ACIA) is a four-year study, culmin…

  • Effects on the Structure of Arctic Ecosystems in the Short- and Long-term Perspectives

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Referências: 110

    Species individualistic responses to warming and increased UV-B radiation are moderated by the responses of neighbors within communities, and trophic interactions within ecosystems. All of these responses lead to changes in ecosystem structure. Experimental manipulation of environmental factors expected to change at high latitudes showed that summer warming of tundra vegetation has generally led to smaller changes than fertilizer addition. Some o…

  • Effects of Changes in Climate on Landscape and Regional Processes, and Feedbacks to the Climate System

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 12

    Biological and physical processes in the Arctic system operate at various temporal and spatial scales to impact large-scale feedbacks and interactions with the earth system. There are four main potential feedback mechanisms between the impacts of climate change on the Arctic and the global climate system: albedo, greenhouse gas emissions or uptake by ecosystems, greenhouse gas emissions from methane hydrates, and increased freshwater fluxes that …

  • Biodiversity, Distributions and Adaptations of Arctic Species in the Context of Environmental Change

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 19

    The individual of a species is the basic unit which responds to climate and UV-B changes, and it responds over a wide range of time scales. The diversity of animal, plant and microbial species appears to be low in the Arctic, and decreases from the boreal forests to the polar deserts of the extreme North but primitive species are particularly abundant. This latitudinal decline is associated with an increase in super-dominant species that occupy a…

  • Key Findings and Extended Summaries

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 1

    TEST 02 - Elsevier's Scopus, the largest abstract and citation database of peer-reviewed literature. Search and access research from the science, technology, medicine, social sciences and arts and humanities fields

  • Effects on the Function of Arctic Ecosystems in the Short- and Long-term Perspectives

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Citada por: 11

    Historically, the function of Arctic ecosystems in terms of cycles of nutrients and carbon has led to low levels of primary production and exchanges of energy, water and greenhouse gases have led to low local and regional cooling. Sequestration of carbon from atmospheric CO2, in extensive, cold organic soils and the high albedo from low, snow-covered vegetation have had impacts on regional climate. However, many aspects of the functioning of Arct…

  • Synthesis of Effects in Four Arctic Subregions

    Terry V Callaghan, Lars Olof Björn et al.•ARTICLE•AMBIO•2004•Referências: 12

    An assessment of impacts on Arctic terrestrial ecosystems has emphasized geographical variability in responses of species and ecosystems to environmental change. This variability is usually associated with north-south gradients in climate, biodiversity, vegetation zones, and ecosystem structure and function. It is clear, however, that significant east-west variability in environment, ecosystem structure and function, environmental history, and re…

  • What Determines the Current Presence or Absence of Permafrost in the Torneträsk Region, a Sub-arctic Landscape in Northern Sweden

    Margareta Johansson, Torben R Christensen et al.•ARTICLE•AMBIO•2006•Citada por: 4•Referências: 29

    In a warming climate, permafrost is likely to be significantly reduced and eventually disappear from the sub-Arctic region. This will affect people at a range of scales, from locally by slumping of buildings and roads, to globally as melting of permafrost will most likely increase the emissions of the powerful greenhouse gas methane, which will further enhance global warming. In order to predict future changes in permafrost, it is crucial to unde…

  • Multiple Effects of Changes in Arctic Snow Cover

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 7•Referências: 76

  • The Changing Face of Arctic Snow Cover

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 17•Referências: 48

  • Arctic Cryosphere

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 7•Referências: 11

  • Feedbacks and Interactions

    Open Access•Terry V Callaghan, Margareta Johansson et al.•ARTICLE•AMBIO•2011•Citada por: 5•Referências: 61

  • Ecological Implications of Changes in the Arctic Cryosphere

    Open Access•Warwick F Vincent, Terry V Callaghan et al.•ARTICLE•AMBIO•2011•Citada por: 5•Referências: 57

  • Multi-Decadal Changes in Tundra Environments and Ecosystems

    Open Access•Terry V Callaghan, C E Tweedie et al.•ARTICLE•AMBIO•2011•Citada por: 6•Referências: 63

Arctic (30 obras) · Climate change and permafrost (29 obras) · Environmental Science (29 obras) · Climate change (23 obras) · Geography (22 obras) · Ecology (21 obras) · Geology (20 obras) · Oceanography (20 obras) · Geology (17 obras) · Oceanography (17 obras)

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