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Wikipedia: Ecosystem = Community of living organisms in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system. These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows. // Comunidad de organismos vivos en conjunto con los componentes no vivos de su entorno (cosas como aire, agua y suelo mineral), interactuando como un sistema. Se considera que estos componentes bióticos y abióticos están unidos entre sí a través de ciclos de nutrientes y flujos de energía.
Headlines
People have shaped most of terrestrial nature for at least 12,000 years – PNAS
Elsewhere on the Web
Tourism ecosystems: A way to think about challenges and solutions to tourism development – Shaun Mann
Ecoregion
Ecoregions of the United States – Ecoregions – RMRS – US Forest Service (archived)
Wikipedia
Ecosystem
Planeta.com