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Tag: "resources" at biology news

Climate change could trigger 'boom and bust' population cycles leading to extinction

... mathematical model that evaluates how climate and resources interact with populations, including a fine-grained analysis of impacts on juveniles, reproducing adults, and adults. In areas where climate change leads to more "good years," with the occasional poor year still occurring, populations will fluctua...

Failure to meet United Nations sanitation target could affect millions of the world's poorest

...he level of the individual. "If you have a lack of resources and you have to decide whether to invest in having clean water or in having sanitation facilities, you're going to be going for the water," she said. "It's a rational prioritization in the short term. Everyone can figure out a place to defecate if fo...

Canada's new government invests $200M in the fight against the mountain pine beetle

...e beetles; and protecting communities and forest resources in areas affected by the infestation. Project activities will include measures to control the eastward spread of the beetle in British Columbia and along the British Columbia–Alberta border. The program will also assist affected communities in...

The desert is dying

..., while changes in sparse but important vegetation resources within the desert core have been neglected. ...

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

... for higher animals, the loss of krill will reduce resources for higher mammals and birds. Data gained through the Long-Term Ecological Research (LTER) site near the American Palmer Station suggests that the ecosystem's response to warming in the region includes changes in both the krill's abundance and av...

Resistance to anti-HIV drugs in Uganda developed due to drug supply problems

...alaria, which was created to dramatically increase resources to fight three of the world's most devastating diseases, and to direct those resources to areas of greatest need. "Notwithstanding the current programs providing free antiretrovirals, ...

Living with water scarcity -- world must act now

...ext 50 years. "With earth's water, land and human resources it is possible to produce enough food for the future ?but it is probable that today's food production and environmental trends will lead to crises in many parts of the world" says David Molden Deputy Director General of the International Water Manage...

How to manage forests in hurricane impact zones

...e rapid assessment of damage, protection of timber resources and recovery of value, management of second order events such as wildfire, protection of other resources such as endangered plants and animals, and best practices for proceeding with salvage. "Stands w...

Mother knows best: Plant knowledge key to childhood health in remote Amazon

...ane' must rely on their ability to exploit natural resources to maintain the health of their children," said Victoria Reyes-García, PhD, coauthor and visiting researcher at Brandeis University. "However, many Tsimane' are pursuing new economic opportunities that undermine this aspect of their culture. It seems...

Turtles are loyal in feeding as well as in breeding

... are territorial or are responding to limited food resources by sticking to their own feeding patches. 'There are estimated to be as few as 300 female green turtles breeding annually in the Mediterranean,' continued Dr Broderick. 'This new information is timely and our research findings strengthen the case...

Too much of a good thing? Excess nutrients or water limit biodiversity

...plots of grassland. Plots that received all of the resources had the fewest species and highest productivity. They combined this with analysis of the 150 year old Rothamsted Park Grass Experiment. Both supported their hypothesis. "Our results show that the loss of plant species from a habitat due to nutrie...

Fruit flies and global warming -- Some like it hot

... be caught at baits in field sites without natural resources as an estimate of fitness in Drosophila. The results showed that heat treated flies were much more often caught at the baits at very hot temperatures while control flies were more often caught at cooler temperatures, while there was an overall balanc...

Virtual duck bills demonstrate species coexistence

...physiological traits that allow it to exploit some resources more efficiently than all other species. Such partitioning of resources essentially provides each species with exclusive access to resources necessary for its survival. Alt...

Biologists call for better choice of model organisms in 'evo-devo'

...ommunicate with funding agents so that the limited resources available will not be disproportionately channelled to the ‘big six? which, while important, cannot illuminate all evo-devo’s central themes. "If we want to understand how insects evolved wings or how legs developed from fins, we need to judiciou...

Cholera pathogen reveals how bacteria generate energy to live

...a single-cell organism, Vibrio cholerae depends on resources in its immediate environment to sustain itself. Blanca Barquera, assistant professor of biology at Rensselaer and principal investigator for the project, studies an enzyme that resides in the membrane that encapsulates V. cholerae. This enzyme, known...

Endangered shortnose sturgeon saved in Hudson River

..., report Mark Bain, associate professor of natural resources at Cornell, and his colleagues in the online publication PLoS ONE. However, the shortnose sturgeon is still endangered in other rivers, Bain said, and will not necessarily be removed from the endangered species list by the U.S. government. In the p...

St. Jude announces breakthrough in eye cancer treatment

...oblastoma live primarily in countries with limited resources and have restricted access to medical treatment, according to Carlos Rodriguez-Galindo, M.D., an associate member of the St. Jude Oncology department. "Today, those children do not have access to the advanced treatments available in other countrie...

Microbes compete with animals for food by making it stink

... deter higher species from consuming valuable food resources -- such as decaying meat, seeds and fruit, a new s...Ecology. "There is the notion that these spoiled resources are not that important," said Mark Hay, a Georgia Institute of Technology professor of biology, who ...

Invasive ants territorial when neighbors are not kin

...ith their kin, the ants may be able to devote more resources to breeding rather than competing. "Territory ...sts invest this time and workforce into collecting resources and raising larvae instead of defending territories, then colonies should grow at a much faster rate...

Protein structure initiative launches new resources for the scientific community

...ins, it is creating new mechanisms for sharing the resources it has developed with the scientific community. ...available to the scientific community, but the new resources should dramatically enhance accessibility." PSI-Materials Repository The Harvard Institute ...

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