Tag: "land" at biology news

Symposium 'Changes on Earth' honors Yale Geologist Robert Berner

...ologists, studying the emergence of vertebrates as land animals. Field studies over the course of his career have taken him to as disparate locations as Hawaii, Bermuda, Iceland, Hubbard Brook, New Hampshire and the Pacific Cascades. Internationally honored, Berner is a Member of the National Academy of...

CGIAR climate change research

...ross millions of square kilometers of agricultural land and forests thousands of kilometers away. The new...te images to give an accurate picture of water and land resources at global and local levels. IWMI recently released a global irrigated-area map (see htt...

Intensified research effort yields climate-resilient agriculture to blunt impact of global warming

..., experience an increase in productive capacity as land that was previously frost-bound opens to cultivati...re based on analysis that examined such factors as land degradation, renewable water supply, infant mortality, crop suitability, disease prevalence, governa...

Freshwater snails are surprisingly fast-moving invaders

...al by birds, cars, and cattle to jump over the dry land that separates the riverways. "Obviously, "says Benot Facon (University of Lausanne), "little can be done to stop [the snails] from invading all Martinican rivers now." Landscape fragmentation is a common feature to many invasions, and even appare...

Thorium poised to meet world's energy needs

...iscussed how thorium fuel cycles produce much less land disruption, chemical and radiological hazards, and chemical toxicity than the conventional uranium fuel cycle. "Thorium offers many potential advantages over traditional uranium/plutonium fuel cycles, including less waste and a much simpler and clean...

Increase in carbon dioxide emissions accelerating

...he atmosphere, with the rest being absorbed by the land and oceans. "When natural variability is smoothed ...e past 50 years," he says. "A danger is that the land and oceans might take up less carbon dioxide in the future than they have in the past, which would i...

ASEAN endorses major initiatives to boost regional rice production

...on focused on production, biodiversity, pollution, land degradation, and water. Getting the latest knowledge and information to rice farmers. ASEAN has endorsed the further development of the Rice Knowledge Bank (RKB) for rice farmers ( www.knowledgebank.irri.org/ ), Asias first digital extension service...

TIGER workshop highlights project results

...s also heard how EO data are being used to monitor land use dynamics in Cameroon where landslides have inc...RIS instrument for use in detecting and monitoring land cover, vegetation index, etc., while UNESCO offered basic remote-sensing training for wetland manage...

Measuring plant diversity, predicting vulnerability to invasive species

...sity at multiple scales of space and time can help land managers evaluate and address these critical resource management issues. Case studies from actual field investigations that demonstrate how to test and assess various field techniques are included....

Resilient form of plant carbon gives new meaning to term 'older than dirt'

...r who are interested in changing carbon storage on land through time as vegetation changes. For this work, the researchers obtained sediment cores from Saanich Inlet, a fjord on Vancouver Island in British Columbia. There low-temperature oxygen-starved bottom waters help preserve annual layers of sedimen...

Scientists lose instruments, gain first look at seafloor formation

...many probably occur each year, and seismometers on land still cannot detect the many small, distant earthquakes that scientists believe precede a submarine eruption for many months. By comparison, earthquakes often occur only a few days or hours before a land-based volcanic eruption. Tolstoy found that ...

Dramatic shift from simple to complex marine ecosystems occurred 250M years ago at mass extinction

... out an estimated 95% of marine species and 70% of land species. New research shows that this mass extinction did more than eliminate species: it fundamentally changed the basic ecology of the world's oceans. Ecologically simple marine communities were largely displaced by complex communities. Furthermo...

Icelandic volcano caused historic famine in Egypt, says Rutgers-based team

...orth lessened the temperature contrast between the land and the oceans, upon which the monsoon winds rely for their development and strength. The modeling showed significant warming that occurred in the region west to east across Africa to the southern Arabian Peninsula and on to India during the summe...

Report outlines funding to conserve half of Massachusetts's land

...o the nation's first public park and first private land trust, Massachusetts has a long history in conserv... the roughly 1 million acres of existing protected land in Massachusetts. The cumulative acreage would be roughly half of Massachusetts's total area of some...

Biodiversity of altered landscapes conference in Panama

...ithsonian Tropical Research Institute. In Panama, land speculation, tourism, expanding urban areas and changing agricultural practices may contribute to a sustainable future or to the swift demise of extremely biodiverse tropical forests and reefs. As the sixth annual meeting organized by PRORENA, a Yal...

Food for flight

...narch populations, and of the migration itself, as land use change has altered both breeding habitat and migratory pathways. Studies have focused on food availability for larvae, pesticides, and loss of overwintering sites in Mexico as possible threats. Less attention has been paid to how landscape-leve...

Fires in far northern forests to have cooling, not warming, effect

...lion square miles, or 14.5 percent, of the earth's land surface. They store 30 percent of Earth's "carbon pool" in plants and soils. Scientists agree that the effects of global warming are most severe nearest the poles, and boreal forests are already facing longer summers and more prolonged dry periods....

New maps emphasize the human factor in wildfire management

...ows us that at some point we'll have to make tough land use planning decisions in order to control wildfires." "We need actions at all levels-by individual landowners, communities and at the federal level," says Radeloff. "We need federal policies that, at the very least, do not foster sprawl in the wi...

End of deforestation in view? Experts advance new way to size up global forest resources

...f the country since 1949, but its area of forested land has steadily risen," notes ecologist Dr. Fang of B...iomass for fuel also forestalls the restoration of land to nature. Through paper recycling and a growing reliance on electronic communication, people help ...

ESSP launches new Monsoon Asia Integrated Regional Study

...g four research themes: Rapid transformation of land and marine resources in coastal zones. Multiple ...ems in semi-arid zones due to changing climate and land use. Changes in resource use and emissions due to rapid urbanization in urban zones. ...

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