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Ecosystem services are the various benefits that humans derive from healthy ecosystems. These ecosystems, when functioning well, offer such things as provision of food, natural pollination of crops, clean air and water, decomposition of wastes, or flood control. Ecosystem services are grouped into four broad categories of services.
While many plants have been used for food, a small number of staple crops including wheat, rice, and maize provide most of the food in the world today. In turn, animals provide much of the meat eaten by the human population, whether farmed or hunted, and until the arrival of mechanised transport, terrestrial mammals provided a large part of the ...
A study from the CGIAR research program on Climate Change, Agriculture and Food Security found from a survey of over 700 households in East Africa that at least 50% of those households had begun planting trees in a change from earlier practices. The trees were planted with fruit, tea, coffee, oil, fodder and medicinal products in addition to ...
A water company has planted 6,000 trees near a Lake District reservoir in an effort to improve raw water quality. Native tree species including wild cherry, downy birch, grey willow and sessile ...
The urban forest provides the basics that animals need for survival; food, water, shelter, and space or habitat. Fruit or mast producing trees provide food sources, trees and other vegetation provide shelter and habitats, and artificial water sources in cities and their parks provide water. [44]
Waterfalls provide spring water for humans, animals and plants for survival and habitat for marine organisms. The water current can be used to turn turbines for hydroelectric generation. The ocean is an example of a natural resource. Ocean waves can be used to generate wave power, a renewable energy source.
Trees growing in arid and/or cold environments do so especially slowly. Thus, tree trunks and branches can remain on the forest floor for long periods, affecting such things as wildlife habitat, fire behaviour, and tree regeneration processes. Some trees leave behind eerie skeletons after death.
Urban foresters plant and maintain trees, support appropriate tree and forest preservation, conduct research and promote the many benefits trees provide. Urban forestry is practiced by municipal and commercial arborists , municipal and utility foresters, environmental policymakers, city planners , consultants, educators, researchers and ...