Signification de "ecosystem" dans le dictionnaire anglais

Un écosystème est une communauté d'organismes vivants en conjonction avec les composants non vivants de leur environnement, en interaction en tant que système. Ces composants biotiques et abiotiques sont considérés comme liés par des cycles nutritifs et des flux d'énergie. Comme les écosystèmes sont définis par le réseau d'interactions entre les organismes et entre les organismes et leur environnement, ils peuvent être de toute taille, mais englobent généralement des espaces spécifiques et limités. L'énergie, l'eau, l'azote et les minéraux du sol sont d'autres composants abiotiques essentiels d'un écosystème. L'énergie qui traverse les écosystèmes provient principalement du soleil. Il entre généralement dans le système par la photosynthèse, un processus qui capture également le carbone de l'atmosphère. En se nourrissant de plantes et les uns sur les autres, les animaux jouent un rôle important dans le mouvement de la matière et de l'énergie à travers le système. Ils influencent également la quantité de biomasse végétale et microbienne présente. En décomposant la matière organique morte, les décomposants libèrent du carbone dans l'atmosphère et facilitent le cyclage des nutriments en transformant les nutriments stockés dans la biomasse morte vers une forme facilement utilisable par les plantes et autres microbes. An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows. As ecosystems are defined by the network of interactions among organisms, and between organisms and their environment, they can be of any size but usually encompass specific, limited spaces. Energy, water, nitrogen and soil minerals are other essential abiotic components of an ecosystem. The energy that flows through ecosystems is obtained primarily from the sun. It generally enters the system through photosynthesis, a process that also captures carbon from the atmosphere. By feeding on plants and on one another, animals play an important role in the movement of matter and energy through the system. They also influence the quantity of plant and microbial biomass present. By breaking down dead organic matter, decomposers release carbon back to the atmosphere and facilitate nutrient cycling by converting nutrients stored in dead biomass back to a form that can be readily used by plants and other microbes.

👁 Tendances

Sur la carte précédente est reflétée la fréquence d'utilisation du terme «ecosystem» dans les différents pays.

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Liste des principales recherches réalisées par les utilisateurs pour accéder à notre dictionnaire anglais en ligne et des expressions les plus utilisées avec le mot «ecosystem».

Le graphique montre l'évolution annuelle de la fréquence d'utilisation du mot «ecosystem» durant les 500 dernières années. Son implémentation est basée sur l'analyse de la fréquence d'apparition du terme «ecosystem» sur les sources imprimées numériques anglaises publiées depuis l'année 1500 jusqu'aujourd'hui.

Michael Arrington

I'm a creature of startups. For example, I don't want government interference in the startup ecosystem.

John Battelle

Advertising and content have always been bound together - in print, on television, and on the web. Sure, you can skip the ad - just flip the page, or press 'ffwd' on your DVR. But great advertising, as I've long argued, adds value to the content ecosystem, and has as much a right to be in the conversation as does the publisher and the consumer.

John Battelle

Facebook's data trove is enviable, and its moves into nearly every aspect of our lives - from payment to media, will create even more of it. The company also has created a huge base of developers for its platform, but the ecosystem is incomplete compared to vertically integrated OSes like iOS, Mac or Windows.

John Battelle

The home phone is relatively cheap, incredibly reliable, and - if you buy the right phone - will work for years without replacement. Oh, and far as I can tell, a home phone won't give you brain cancer. In a perfect world, the hard line should have become a platform for building out an entire app ecosystem for the home. And yet... it didn't.

Janine Benyus

Biomimicry is basically taking a design challenge and then finding an ecosystem that's already solved that challenge, and literally trying to emulate what you learn.

Li Bingbing

The threat of extinction is more real than many realise. And the damage done to elephants directly leads to destruction of the ecosystem.

Adam Braun

There are many challenges in the global education ecosystem: from top-down systemic issues in how educational services are organized and delivered, to bottom-up issues of curriculum effectiveness, accountability, and human resource allocation.

Howard Warren Buffett

Soil is a living ecosystem, and is a farmer's most precious asset. A farmer's productive capacity is directly related to the health of his or her soil.

Katherine Center

It's fun to think about plants not just as decorations but as functioning parts of our yard's ecosystem that attract wildlife to the garden. We have hummingbirds, tons of bees, and many monarch butterflies. The kids love it! Though we're very laissez-faire with the garden and never put chemicals on it or even water it much!

Michael Chabon

The First Amendment has the same role in my life as a citizen and a writer as the sun has in our ecosystem.

1

This derivative volume based on the best-selling Encyclopedia of Ecology (published 2008) is the only book currently published that provides an overview of the world’s ecosystems in a concise format.

2

The book emphasizes the importance of understanding the factors that contribute to social and ecological resilience —the extent to which a system can maintain its structure, function, and identity in the face of disturbance.

3

Fundamentals of Ecosystem Science provides a compact and comprehensive introduction to modern ecosystem science. Written by a group of experts, this book covers major concepts of ecosystem science, biogeochemistry, and energetics.

4

Discusses managing the environment from philosophical, scientific, and political perspectives

5

The book offers important insights and a unique perspective dervied from that invaluable experience.

6

The book closes with a final chapter that addresses the need not only to understand ecological science, but to put that science into an ecosystem conservation ethics perspective.

7

With the Earth 's climate, flora, and fauna changing rapidly, there is a pressing need to understand terrestrial ecosystem processes and their sensitivity to environmental and biotic changes. This book offers a framework to do just that.

8

This book describes the marine ecosystem of the Barents Sea.

9

The book addresses land, freshwater, and marine systems at a variety of spatial scales and includes discussion of how to treat both climate change and cultural values when examining tradeoffs among ecosystem services.

10

- Includes an up-to-date summary of global aquatic ecosystems and issues - Covers current environmental problems and management solutions - Features full-color figures and tables to support the text and aid in understanding

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