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Northern Terrestrial Ecosystems Current Events | Northern Terrestrial Ecosystems News

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Carbon sink capacity in northern forests reduced by global warming
An international study investigating the carbon sink capacity of northern terrestrial ecosystems discovered that the duration of the net carbon uptake period (CUP) has on average decreased due to warmer autumn temperatures.   view more (2008-01-03)

Carbon turns over much faster through basal food-chain levels in aquatic than in terrestrial ecosystems
Global temperatures have increased dramatically over the past century, which is causing major impacts on climate patterns, ocean circulation and wildlife preservation. The increase in temperature is largely due to a rise of anthropogenic emissions of greenhouse gases, of which CO2 is one of the... view more (2004-02-25)

Marine pathogens spread much faster than their terrestrial counterparts
It has become increasingly clear that pathogen epidemics are as significant a component of marine systems as they are in terrestrial systems. At an National Center for Ecological Analysis and Synthesis (NCEAS) working group on Diseases in the Ocean, McCallum, Harvell and Dobson collated data on... view more (2003-11-24)

Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows
Seabirds are the surprising culprits in delivering pollutants - through their guano - to seemingly pristine northern ecosystems, a new Canadian study shows.   view more (2005-07-15)

Pollen proves beneficial for northern lakes
Mention the word pollen to most people and it triggers thoughts of their battle against allergic reactions. However, a University of Alberta researcher has found an important spin-off for this fine yellow dust-like powder.   view more (2006-06-13)

Scientists may have solved an ecological riddle
A team of scientists may have solved the riddle of why plants that work with bacteria to convert atmospheric nitrogen gas into an essential biological nutrient (ammonia) tend to prevail in the world's tropical regions rather than higher latitudes.   view more (2008-06-19)

Declining sharks
The transformation of terrestrial and coastal ecosystems by humans is well known, but only recently have the impacts of anthropogenic forces in the open ocean been recognized. In particular, intense exploitation by industrial fisheries is rapidly changing oceanic ecosystems by drastically reducing... view more (2004-02-05)

At the root of nutrient limitation, ecosystems are not as different as they seem
Anyone who has thrown a backyard barbecue knows that hot dogs are inexplicably packaged in different numbers than buns - eight hot dogs per pack versus 10 hot dog buns. Put in ecological terms, this means that weenie roasts are "hot-dog limited" - the extra buns are worthless without hot... view more (2007-11-09)

Earth light: Terrestrial vegetation detected in the spectrum of the earthshine
A team including Pierre Riaud and Jean Schneider of the Observatoire de Paris and Luc Arnold, Sophie Gillet and Olivier Lardie're of the Observatoire de Haute Provence detected for the first time the color characteristic of the terrestrial vegetation in the "Earthshine", i.e. the dark part of the... view more (2002-01-23)

Seabird Ammonia Emissions Contribute to Atmospheric Acidity
Ammonia emissions from seabirds have been shown to be a significant source of nitrogen in remote coastal ecosystems, contributing to nutrient enrichment (eutrophication) and acidification in ecosystems.   view more (2008-09-23)

Australian Land Surface Is Becoming More Like A Gardener's Greenhouse
Recent research has shown that over the past 50 years the evaporative demand at the terrestrial surface has decreased in many regions, while rainfall has remained constant or even increased a little, effectively making the land wetter. Much of the research to date has been undertaken in the... view more (2004-06-30)

The global carbon budget — proper accounting means paying attention to inland waters
Life as we know it, from the most basic microbes to our human neighbors, is carbon based. By investigating how carbon cycles through ecosystems, scientists can learn valuable information about food chains, nutrient cycling, and productivity.   view more (2007-04-04)

Biodiversity and resilience of coral reefs
With over 3000 fish species, Indo-Pacific coral reefs represent one of the most diverse ecosystems on the globe. It is easy to assume that the loss of one or two species from these systems would have little impact. However, in an article in the April issue of Ecology Letters, Bellwood and... view more (2003-04-08)

Northern forests less effective than tropical forests in reducing global warming
Forests in the United States and other northern mid- and upper-latitude regions are playing a smaller role in offsetting global warming than previously thought, according to a study appearing in this week's issue of Science.   view more (2007-06-25)

Ants are surprisingly ancient, arising 140-168 million years ago
Ants are considerably older than previously believed, having originated 140 to 168 million years ago, according to new Harvard University research published in the journal Science.   view more (2006-04-12)

Canada's pristine freshwater fisheries at risk
If you want to catch a trophy northern pike, walleye or brook trout in the northern Canadian wilderness, better plan your trip soon. That's because according to a report released today by the Wildlife Conservation Society, looming development, including forestry, mining and dam construction,... view more (2007-09-20)

Ambient light influences the evolution of colour signals
In light-contrasted ecosystems, ambient light and background colours influence the evolution of animal coloration. Because maximal conspicuousness is achieved for signals which are rich in the colours of ambient light but poorly reflected by background, different signals will be cryptic or... view more (2004-03-18)

Climate change and permafrost thaw alter greenhouse gas emissions in northern wetlands
Permafrost - the perpetually frozen foundation of North America - isn't so permanent anymore, and scientists are scrambling to understand the pros and cons when terra firma goes soft.   view more (2007-08-10)

New Bio Website for Northern Ireland goes live
Bionorthernireland.com a news and information website serving the Life and Health Technologies sector in Northern Ireland goes live this week. Packed with information and news about the developments in this sector - crucial to the growth of Northern Ireland`s economy - www.bionorthernireland.com... view more (2002-04-25)

Ulster cannot afford to fall behind in science
SBS today expressed surprise and disappointment that the Northern Ireland Executive has not allocated any extra resources for university research in its draft budget.   view more (2002-09-26)

Science Matters in Northern Ireland
SBS today welcomed the opening of the new Centre for Molecular Biosciences at the University of Ulster, but highlighted the general lack of government investment in science in Northern Ireland. In a talk to scientists in Northern Ireland, Dr Peter Cotgreave, Director of SBS, pointed out that... view more (2002-02-01)

New Method Confirms Importance of Fungi in Arctic Nitrogen Cycle
A new method to calculate the transfer of nitrogen from Arctic mushrooms to plants is shedding light on how fungi living symbiotically on plant roots transfer vital nutrients to their hosts.   view more (2006-05-10)

Sea Grant warns of dumping seafood
In its latest outreach campaign, MIT Sea Grant has developed an educational pamphlet to encourage people not to release or dump live and fresh seafood and seafood waste into the wild.   view more (2006-06-22)

Fear of crime in Northern Ireland is not irrational
Fear of crime in Northern Ireland is a rational perception and not based just on irrational emotion. This contrasts with the view that fear of crime is a separate issue from the reality of being a victim of crime. The inadequacy of the method for investigating fear of crime has been responsible for... view more (1999-03-26)

Nature can help reduce greenhouse gas, but only to a point
Plants apparently do much less than previously thought to counteract global warming, according to a paper to be published in next week's online edition of Proceedings of the National Academy of Sciences.   view more (2006-04-11)
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