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"Conservation of natural resources Juvenile literature."
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Earth's resources geo facts
\"Learn about the kind of resources Earth holds, and how they are extracted and used. Discover the problems and challenges posed by human consumption of these resources, from overfishing to dwindling supplies of fossil fuels\"--Amazon.com.
Book
Happy to breed in the city? Urban food resources limit reproductive output in Western Jackdaws
Urban areas expand worldwide, transforming landscapes and creating new challenging habitats. Some bird species, mainly omnivorous feeding on human waste and cavity nesters, commonly breed in these habitats and are, therefore, regarded as urban‐adapted. Although urban areas may provide new nesting sites and abundant human waste, the low breeding success found in some of these species suggests that the poor protein content in human waste might limit breeding parameters. We investigated whether the breeding success of a cavity nester and omnivorous species commonly breeding in urban areas, the Western Jackdaw (Corvus monedula), depended on the availability of good‐quality non‐urban food. We approached the objective by combining a literature review and experiments in the field. With the literature review, we compared jackdaw populations in different habitats across Europe and found that clutch size and number of fledglings per pair decreased with distance to non‐urban foraging grounds, even after controlling for the effect of colony size, latitude, and climate. In two experiments, we tested whether the breeding success of urban pairs could be increased by supplementing high‐quality food, first only during egg formation and second also until chick fledging. Food supplementation during egg formation led to larger eggs and higher hatching success than in urban control nests, but this did not result in higher chick survival. However, when food supplementation was prolonged until fledging in the second experiment, we observed a significant increase of nestling survival. These findings highlight that research and management actions should not only focus on species displaced by urbanization, but also on “urban‐adapted” species, as they might be suffering from a mismatch between availability of nesting sites in buildings and adequate non‐urban food resources. In these cases, nest sites should be provided in or close to adequate food resources.
Urban nesting sites and human waste attract many bird species. However, low‐protein content in human waste may lead to lower breeding success. Breeding output in urban areas decreases with distance to non‐urban foraging areas. Food supplementation experiments confirmed that urban food limits reproduction. The mismatch between nesting site availability and quality food should be reduced.
Journal Article
The international energy experience
How far can energy markets be free as well as competitive? What do low oil prices mean for the oil industry and other energy markets? How can economic efficiency in the energy industries be reconciled with environmental protection? How far is the UK model of liberalising electricity and gas industries being applied elsewhere in the world and how is it faring, at home and abroad? These are typical questions addressed in this collection of articles written by an international group of economists. Edited by the leaders of the two leading UK academic centres of energy economics, the book demonstrates how important the analysis of policy and regulatory frameworks has become for those interested in efficient energy and environmental outcomes.
eBook
Ru guo di qiu bei wo men chi diao le
Fruits, air, water, plants, fish, animals ... The earth is not a garden with infinite resources. Here is a book that invites kids to take care of our planet.
BOOK
Reduce, reuse, and recycle
Discusses ways to reduce the impact of trash on our planet, while strengthening language arts skills in elementary school readers.
Book
Human environmental impact : how we affect Earth
\"In this title, readers will learn about alternative energy sources such as solar, wind, and geothermal energy, and what they can do to positively affect Earth\"-- Provided by publisher.
Book