Overblog Suivre ce blog
Administration Créer mon blog
Bioécologie

The Ecological Society of America (ESA)

29 Juin 2015,

The Ecological Society of America (ESA) is a nonpartisan, nonprofit organization of scientists founded in 1915 to:

  • promote ecological science by improving communication among ecologists;

  • raise the public's level of awareness of the importance of ecological science;
     
  • increase the resources available for the conduct of ecological science; and

  • ensure the appropriate use of ecological science in environmental decision making by
    enhancing communication between the ecological community and policy-makers.

Ecology is the scientific discipline that is concerned with the relationships between organisms and their past, present, and future environments. These relationships include physiological responses of individuals, structure and dynamics of populations, interactions among species, organization of biological communities, and processing of energy and matter in ecosystems.

ESA's over 10,000 members conduct research, teach, and use ecological science to address environmental issues that include:

  • biotechnology

  • natural resource management

  • ecological restoration

  • ozone depletion and global climate change

  • ecosystem management

  • species extinction and loss of biological diversity

  • habitat alteration and destruction

  • sustainable ecological systems


    (Source, and more informations here)

Taira Y, Hayashida N, Tsuchiya R, Yamaguchi H, Takahashi J, et al. (2013) Vertical Distribution and Estimated Doses from Artificial Radionuclides in Soil Samples around the Chernobyl Nuclear Power Plant and the Semipalatinsk Nuclear Testing Site. PLoS ONE 8(2): e57524.

23 Juin 2015,

Publié par Bioécologie

Hide and seek in the rainforest: How do bats tell food from foliage?

21 Juin 2015,

Publié par Bioécologie

Many bats use echolocation to find insects for food. They emit ultrasonic calls and listen for the returning echoes to localize their snack. This is an especially demanding task as in dense vegetation of the jungle bats are bombarded by echoes from leaves, trees and vines, who mask the echo of the prey. But some species managed to specialize. Scientists plunged deep into the Malaysian rainforest to investigate how these bats tell food from foliage.

***

Viele Fledermäuse nutzen Echoortung, um Spinnen oder Schmetterlinge zu fangen. Doch im dichten tropischen Regenwald ist das gar nicht so einfach: Kleine Insekten sind besonders schwer zu erkennen, denn das von ihnen zurückgeworfene Echo wird oft von dem Signal der dichten Vegetation überlagert. Forscher finden heraus, wie die Fledermäuse im malaysischen Regenwald im Laufe der Evolution ihre Laute perfekt an dieses Problem angepasst haben.

Des îles de déchets ?

19 Juin 2015,

Publié par Bioécologie

"Les courants océaniques subtropicaux portent des déchets qui viennent former une concentration d’amas de plastiques dans le Pacifique Nord. Appelés îles des déchets ou septième continent, ils ne constituent pas une masse solide mais une zone où la mer est saturée par les débris plastiques. L'émission de télévision, le Dessous des Cartes, explore ce symbole du dérèglement de notre monde."

Source : Arte - Le dessous des cartes - Février 2011.

Migratory behaviour affects the size of bird brains

18 Juin 2015,

Publié par Bioécologie