Sentences with phrase «terrestrial foods»

However, all evidence suggests that such terrestrial foods are not necessary for bears that have fed well during the previous spring: whether on land or out on the ice, most polar bears eat very little over the late summer / early fall months.

Tagged Arctic, Beaufort, Central Canadian Arctic, declining sea ice, fall, feeding, feeding platform, gorging, hunting, hyperphagia, Pilfold, polar bear, seal kills, seal pups, seasons, spring, Stirling, summer, terrestrial foods, winter

For more on the terrestrial foods topic, see my detailed discussion in this previous post, and this recent (March 30) ScienceNews report on yet another, largely anecdotal «polar bears resort to bird eggs because of declining sea ice» story (see photo below, based on a new paper by Prop and colleagues), which was also covered March 31 at the DailyMail («Polar bears are forced to raid seabird nests as Arctic sea ice melts — eating more than 200 eggs in two hours,» with lots of hand - wringing and sea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sea).

Can polar bears use terrestrial foods to offset lost ice - based hunting opportunities?

Only small numbers of polar bears have been documented consuming terrestrial foods even in modest quantities.

«Although some polar bears may eat terrestrial foods, there is no evidence the behavior is widespread,» said Dr. Karyn Rode, lead author of the study and scientist with the USGS.

A team of scientists led by the U.S. Geological Survey found that polar bears, increasingly forced on shore due to sea ice loss, may be eating terrestrial foods including berries, birds and eggs, but any nutritional gains are limited to a few individuals and likely can not compensate for lost opportunities to consume their traditional, lipid - rich prey — ice seals.

Where consumption of terrestrial foods has been documented, polar bear body condition and survival rates have declined even as land use has increased.

«I agree wholeheartedly with the authors that there is little evidence to suggest that terrestrial foods are important to polar bears now, or would be in the future.

In the end, however, I see the bickering over the relative importance of terrestrial foods as symptomatic of the politics of polar bears that Amstrup takes so personally, in part because it's now his job to do so.

«When we eat fish or other marine foods, we incorporate carbon into our bones that is much older than in terrestrial foods.

However, with further study, the researchers found no evidence of the survival of any leaf miners over the Cretaceous - Paleocene boundary, suggesting an even more total collapse of terrestrial food webs than has been recognized previously.

«If insects were gone, you would break a large part of the terrestrial food chain,» says Wilson.

Mercury accumulates in aquatic and terrestrial food chains, and has harmful neurological and reproductive effects on animals.

Morris has widened his research to include marine food chains and is also studying the effects of a range of organic flame retardants on the same terrestrial food chain.

Now that Mainland et al have published «The missense of smell: functional variability in the human odorant receptor repertoire» and Foote et al have published «Tracking niche variation over millennial timescales in sympatric killer whale lineages,» the similarities at the top of the aquatic and terrestrial food chains attest to the power of conserved molecular mechanisms to link cause and effect across all species via olfaction and odor receptors, which is what I detailed in the review I submitted last week.

Cobalt and secondary poisoning in the terrestrial food chain: data review and research gaps to support risk assessment.

Thus far, observed consumption of terrestrial food by polar bears has been insufficient to offset lost ice - based hunting opportunities but can have ecological consequences for other species.

Setting aside 30 percent of the oceans as no - take MPAs would mean more terrestrial food production, he argued, and the extra forests converted to farmland and livestock would generate a significantly larger carbon footprint than fishing.

«We hope that these estimates and their significant magnitude raise public awareness and increase the level of appreciation for the important global role of spiders in terrestrial food webs,» adds Nyffeler.

Polar bears make little use of terrestrial food webs: Evidence from stable - carbon isotope analysis

Not exact matches

Trees are an ideal habitat for frogs not only because they allow them to escape from terrestrial predators, but also because their fallen leaves provide protection while the frogs are on the ground, breeding habitat and plenty of food, such as insects.

This global biological recordbased on daily observations of ocean algae and land plants from NASAs Sea - viewing Wide Field - of - View Sensor (SeaWiFS) missionwill enable scientists to study the fate of atmospheric carbon, terrestrial plant productivity and the health of the oceans food web.

Given the dearth of terrestrial plants on islands in the Gulf of California, Polis and Hurd set out to discover where the energy in the spiders» food came from.

The study grew out of work the authors undertook in the Pacific, where scientists met with community members and local, regional, and national government experts to examine issues such as food security, access to fresh water, quality education, sustainable tourism, and protection of marine and terrestrial resources.

[Box 16] Federal Coordinating Council for Science, Engineering and Technology Federation of American Scientists Federation of American Societies for Experimental Biology Federation of Materials Society Foreign Service Institute Federation of Asian Scientific Academies and Societies Gas Research Institute Geological Society of Africa Gesellschaft Deutscher Chemiker Government Research Corporation The Heritage Foundation Hong Kong Association for the Advancement of Science and Technology India Science Congress Association India National Science Academy Industrial Research Institute Institute of Electrical and Electronics Engineers Institute of Food Technologies Institute of Gas Technology Institute of International Education Institute of Terrestrial Ecology Institution of Engineers of Ireland Intergovernmental Bureau for Informatics IBI publication - Agora International Association for the Advancement of Appropriate Technology for Developing Countries International Association of Professional Congress Organizers International Center for Developing Countries, Trieste International Centre for Insect Physiology and Ecology International Council of Scientific Unions International Development Conference International Development Research Centre International Foundation for Science International Foundation for Science, Technology and African Development International Life Science Institute International Organization for Chemical Sciences in Development International Organization for the Study of Group Tensions International Registry of Organization Development Professionals IREX International Society of African Scientists International Studies Association Japan Techno - Economic Society Max Planck Gesellschaft National Association of Professional Engineers National Association of State Universities and Land - Grant Colleges National Audubon Society National Coalition for Science and Technology National Council on Foreign Language and International Studies National Society of Professional Engineers New York Academy of Sciences New York State Energy Research and Development Authority Organization of American States Organization for Economic Cooperation and Development Overseas Development Council

Future space colonists might want to have terrestrial fauna with them, either for work, for food, as pets, or just for aesthetics.

We analyze and model the flux of terrestrial materials from land to sea — the origins, pathways, processes, and food web consequences — in the context of long - term environmental change.

In the IPCC's words, the special report will cover «desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems.»

At its 43rd Session (Nairobi, Kenya, 11 - 13 April 2016), the IPCC decided to prepare a special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems.

At its 45th Session (Guadalajara, Mexico, 28 - 31 March 2017), the Panel approved the outline of Climate Change and Land: an IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems.

The sustainable land management (SLM) and restoration of terrestrial resources are vital to enhancing agricultural productivity especially for small - scale food producers.

In an accompanying News & Views, Max Troell and colleagues discuss some of these additional considerations, noting that «the extent to which such aquatic food production is connected to both aquatic and terrestrial ecosystems needs careful consideration.»

Aquaculture is an important potential source of food given the space constraints and environmental impact of terrestrial agriculture and the precarious state of the world's wild fisheries.

By following these isotopes into the food web, we can determine what fraction of a worm, a crayfish, or a fish was ultimately supported by terrestrial versus aquatic photosynthesis.

We appreciate this leafy plant today because it provides a whole - food source of B vitamins, a rare find in terrestrial plants!

Manufactured pet foods are profitably derived from the human food and beverage industries that continue to rely on the use of increasingly contaminated, hazardous and depleted terrestrial and aquatic ecosystems.

The phasing out of plastic shopping bags and Styrofoam and plastic food utensils, such as clamshells, flat plates and cups, is a necessary pollution control measure to protect the terrestrial and marine environment from harmful plastic contamination.

The number of eggs which successfully hatch is relatively low due to terrestrial predators such as monitor lizards which will dig up the eggs for food.

Land — Terrestrial ecosystems and land use, sustainable agriculture and food systems, mineral extraction, healthy forests, pollution, toxics and hazardous wastes

«As humans, we've utilized terrestrial animals as food, but also to pull carts and plow fields.

Soil water is perhaps the most precious resource of the Earth because if it becomes destroyed or disappear there will be neither food nor water for terrestrial plants and animals like people.

There are a lot of hypothetical deliberations on where this «missing» CO2 is going: into increased terrestrial plant photosynthesis or soil absorption, dissolved into the ocean, where it is buffered chemically or converted by photosynthesis from phytoplankton, entering the food chain and possibly getting converted to carbonates that eventually end up on the ocean floor, into limestone through weathering or dissipated into space, etc..

CO2 is the food supply for terrestrial life, including humans, and it is benign in atmospheric concentrations, so so far no.

COLE BAY — A lack of local food production, unrestricted and uninspected development, insufficient use of renewable energy, solid waste issues, no terrestrial conservation areas, and ineffective public transport have resulted in St. Maarten running at an ecological deficit,» says environmental agency St....

The decision by the U.S. on whether to continue pursuit of liquid fuel and other forms of energy from food and terrestrial ecosystems will be of great importance to the well - being and survival of humanity and the Earth.

This includes aspects of the terrestrial biosphere: global food production, rice cultivation, and animal farming, as well as waste disposal.

Many other challenges such as the distortion of ecosystem services, the loss of biodiversity, the degradation of land, sprawling urbanization, worsening water scarcity, the disturbances in terrestrial and marine food chains or the ubiquitous pollution of all environmental systems have to be taken into consideration.

A new paper by polar bear biologists (Rode et al. 2015) argues that terrestrial (land - based) foods are not important to polar bears now and will not be in the future — a conclusion I totally agree with — but they miss the point entirely regarding the importance of this issue.

The terrestrial biosphere stores a large amount of carbon, and is critical for the provision of food, fuel, and fiber, as well as for climate mitigation.