How climate change alters competition for food in the Arctic

Competition between belugas and Greenland halibut in Cumberland Sound in the Arctic has changed with the climate. Belugas and halibut are considered intraguild predators, i.e. predators that feed on one another to reduce competition for resources. Researchers have tracked predation between the two species over a 30-year period. Their findings show that the belugas consume […]

New method uses over 200 years of data to track early bloomers

There’s now a tool to find out whether your flowers are blooming unusually early in the season. Thanks to scores of data recorded by both researchers and citizen scientists, the new statistical estimator contrasts the time a flower bloomed over the past two centuries to observation in the present day. Study authors say that their […]

(Pixabay/CC0)

Survival of the fullest: Red knots’ chances of surviving winter increase with its body weight

Endangered rufa red knots – which make one of the world’s longest migrations, from southern South America to the Arctic – are more likely to leave for breeding grounds earlier, arrive sooner and breed successfully if they start out their summer migration on a full stomach. Using innovative radio tracking, researchers observed a group of […]

Scientists create a global tool to help countries plan for better conservation funding

Conservation funding can mitigate biodiversity loss if those finances are invested wisely, and a newly designed model aims to help governments accomplish this goal over time. Authors of a new study designed an evidence-based model to help predict the impact of conservation funding on biodiversity loss in 109 countries. Their data revealed that, in the […]

Greenhouse emissions have to be continuously reduced to meet Paris Agreement goals

In order to limit the amount of global warming by 2020 to only 1.5 degrees Celsius, countries under the Paris Agreement may have to strengthen their carbon reduction pledges, a new study suggests. Researchers assessed remaining carbon budgets that are compatible with limiting warming to 1.5 °C by using a simple carbon-climate model, key properties […]

A family of Kodiak bears (Lisa Hupp/USFWS)

How climate change has altered Kodiak bears’ feeding habits

Red elderberry and sockeye salmon make up a large portion of a Kodiak bear’s diet; usually, the bears treat themselves to spawning salmon before the elderberry season begins. Recently, warmer springs have shifted the elderberry fruiting time to an earlier period, which coincides with the salmon spawn. Researchers observed how warmer springs affected the bears’ […]

2016 yet another exceptionally warm year, experts confirm

Global temperatures in 2016 have reached a peak high of 0.8 degrees Celsius above their level in the period between 1961 and 1990. This is the second year in a row to produce record global temperatures – although there isn’t a significant increase from 2015, according to the study authors. Warmer global temperatures in 2016 […]

the arctic tundra ecosystem at Toolik Field Station with the Brooks Range in the background.
(Image by Daniel Obrist)

The cycle of mercury pollution in the Arctic tundra

Human activity has been a major source of mercury pollution in the Arctic, and a new study has identified the form most often taken by the pollutant: gaseous elemental mercury (GEM). The News & Views article discusses how the Arctic tundra acts as a major sink for mercury, as the local plants uptake GEM from the […]

Adélie penguin at Lovill Bluff Colony, Mt Siple, West Antarctica. (Image by Jasmine Lee/Australian Antarctic Division)

A rare look at the potential effects of climate change on terrestrial species in Antarctica

Much research has been dedicated to studying the effects of climate change and global warming on the Antarctic ice sheet and sea levels; but the same can’t be said about the ice-free parts of the region, which cover less than 1% of the continent. Researchers modelled the potential effect of climate change under two Intergovernmental […]

thermometer-temperature-heat

Killer heatwaves are more common than we think

Results of an extensive literature review show that lethal heatwaves are more common than previously thought, and suggest that the extreme heat conditions will continue to arise even if greenhouse gas emissions are drastically reduced in the future. Researchers found over 1,900 cases of locations worldwide since 1980 where heatwaves have killed people, and identified […]

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