Ice in the area is melting faster than expected and could contribute significantly to sea level rise, but there’s been very little data from the region. The latest observations by oceanographers from the University of Gothenburg (Sweden) were recently published in the journal Nature Geoscience.
Transplanting corals from nearby Norwegian waters may help reef survive trawling, sedimentation threats
By Bob Berwyn
FRISCO — Biologists have launched a restoration effort at Sweden’s only coral reef, which has been hammered by trawling and increased sedimentation from eutrophication. Continuous observations with remotely operated vehicles shows the health of the reef slowly continues to decline.
To try and restore the the Säcken reef in the Koster Fjord, researchers with the University of Gothenburg are transplanting healthy corals from nearby reefs in Norway. The species of coral in question, Lophelia pertusa, requires an environment with a constant high level of salinity and low water temperatures all year round. In Sweden, these conditions only exist in the northern part of Bohuslän, where deep water from the Atlantic is led in via the Norwegian Trench.
SUMMIT COUNTY — Swedish researchers have scaled down global warming models to calculate the effect on a specific region, finding that, by the end of the 21st century, Baltic Sea temperatures and salinity will be higher than at any time since 1850, potentially with major consequences for the marine environment.
The increase in temperature will cause the oxygen content of the water to fall, making the effects of eutrophication more pronounced. The change in salt content may result in species that are currently at the edge of their dispersion area disappearing, leading to a decline in the diversity of species. Continue reading “Baltic Sea facing global warming woes”→
Swedish researchers pinpoint scary climate feedback loop
By Summit Voice
SUMMIT COUNTY — Instead of absorbing heat-trapping gases, Arctic near-shore seas are becoming sources of carbon dioxide, accorindg to researchers from Sweden’s University of Gothenburg. With careful measurements, the scientists found that the amount of CO2 being absorbed by the oceans is decreasing.
That leads to an increase of greenhouse gases in the atmosphere and an increased rate of warming in the Arctic in a self-reinforcing climate feedback loop that includes some unexpected factors. For example, increased coastal erosion carries more organic matter into the sea, where it breaks down and releases even more CO2. Continue reading “Global warming: Arctic seas becoming sources of CO2”→
Long-term research shows patterns of change linked with temperature and soil moisture
By Summit Voice
SUMMIT COUNTY — Swedish scientists from the University of Gothenburg say they’ve linked changes in Arctic vegetation with increasing temperatures. Many Arctic plants are growing taller, the proportion of ground covered with plants has grown, and, above all, there has been an increase in evergreen shrubs.
“We’ve managed to link the vegetation changes observed at the different sites to the degree of local warming, … the vegetation changes in our fixed plots are a result of local warming at numerous sites across the world’s tundra,” said University of Gothenburg. biologist Robert Björk. Continue reading “Global warming: Arctic is greening up”→
Swedish researchers propose climate tax on meat and milk; food production contributes 25 percent of global greenhouse gases
By Summit Voice
SUMMIT COUNTY — With methane and nitrogen oxides from food production accounting for 25 percent of global greenhouse gas emissions, there’s room to make some significant reductions. One way to influence the consumption of products that generate the highest amount of those gases could be to impose a climate tax on meat and milk, according to researchers at Sweden’s University of Gothenburg.
In a paper published in the journal Climate Change, Kristina Mohlin, Stefan Wirsenius and Fredrik Hedenus concluded that a €60 tax per ton of CO2 equivalent on meat and milk could reduce greenhouse gas emissions by about 7 percent. If the land were to be used for bioenergy production instead of dairy and meat, emissions could be cut sixfold, they said.