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Ecosystems are dynamically interacting systems of organisms, the communities they make up, and the non-living components of their environment. Ecosystem processes, such as primary production , nutrient cycling , and niche construction , regulate the flux of energy and matter through an environment.
It can be measured by the ecological footprint, a resource accounting approach which compares human demand on ecosystems with the amount of planet matter ecosystems can renew. Estimates by the Global Footprint Network indicate that humanity's current demand is 70% [27] higher than the regeneration rate of all of the planet's ecosystems combined ...
Ecosystem diversity deals with the variations in ecosystems within a geographical location and its overall impact on human existence and the environment. Ecosystem diversity addresses the combined characteristics of biotic properties which are living organisms ( biodiversity ) and abiotic properties such as nonliving things like water or soil ...
Ecosystems may be habitats within biomes that form an integrated whole and a dynamically responsive system having both physical and biological complexes. Ecosystem ecology is the science of determining the fluxes of materials (e.g. carbon, phosphorus) between different pools (e.g., tree biomass, soil organic material).
Ecosystem ecology is philosophically and historically rooted in terrestrial ecology. The ecosystem concept has evolved rapidly during the last 100 years with important ideas developed by Frederic Clements, a botanist who argued for specific definitions of ecosystems and that physiological processes were responsible for their development and persistence. [2]
The misconception originated as promotional material in the Macaroni Journal, a newsletter published by an association of American pasta makers. Spices were not used in the Middle Ages to mask the flavor of rotten meat before refrigeration. Spices were an expensive luxury item; those who could afford them could afford good meat, and there are ...
Large ecosystems characterized by a common climate, common vegetation, and common animal life. biosphere The entirety of all biological systems on Earth, integrating all living beings and ecosystems; the realm in which biological organisms live. [3] biota The animal and plant life of a region considered as a total ecological entity. [2] blackwater
River ecosystems are prime examples of lotic ecosystems. Lotic refers to flowing water, from the Latin lotus, meaning washed. Lotic waters range from springs only a few centimeters wide to major rivers kilometers in width. [5] Much of this article applies to lotic ecosystems in general, including related lotic systems such as streams and springs.
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