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  2. Aquatic ecosystem - Wikipedia

    en.wikipedia.org/wiki/Aquatic_ecosystem

    Organisms in marine ecosystems tolerate salinity, while many freshwater organisms are intolerant of salt. The degree of salinity in an estuary or delta is an important control upon the type of wetland (fresh, intermediate, or brackish), and the associated animal species. Dams built upstream may reduce spring flooding, and reduce sediment ...

  3. Ecological resilience - Wikipedia

    en.wikipedia.org/wiki/Ecological_resilience

    In ecology, resilience is the capacity of an ecosystem to respond to a perturbation or disturbance by resisting damage and subsequently recovering. Such perturbations and disturbances can include stochastic events such as fires, flooding, windstorms, insect population explosions, and human activities such as deforestation, fracking of the ground for oil extraction, pesticide sprayed in soil ...

  4. Freshwater biology - Wikipedia

    en.wikipedia.org/wiki/Freshwater_biology

    Oxsjön, a lake in Sweden. Freshwater biology focuses on environments like lakes. A pond in the Oconee River Floodplain in Georgia, whose surface is covered in duckweed but still contains fish. Freshwater biology is the scientific biological study of freshwater ecosystems and is a branch of limnology. This field seeks to understand the ...

  5. Survival skills - Wikipedia

    en.wikipedia.org/wiki/Survival_skills

    Survival skills also support proper knowledge and interactions with animals and plants to promote the sustaining of life over time. Survival skills are basic ideas and abilities that ancient people invented and passed down for thousands of years. [1] Today, survival skills are often associated with surviving in a disaster situation. [2]

  6. Forest management - Wikipedia

    en.wikipedia.org/wiki/Forest_management

    The forest is a natural system that can supply different products and services. Forests supply water, mitigate climate change, provide habitats for wildlife including many pollinators which are essential for sustainable food production, provide timber and fuelwood, serve as a source of non-wood forest products including food and medicine, and contribute to rural livelihoods.

  7. Flood management - Wikipedia

    en.wikipedia.org/wiki/Flood_management

    Flood management describes methods used to reduce or prevent the detrimental effects of flood waters. Flooding can be caused by a mix of both natural processes, such as extreme weather upstream, and human changes to waterbodies and runoff. Flood management methods can be either of the structural type (i.e. flood control) and of the non ...

  8. Spawning - Wikipedia

    en.wikipedia.org/wiki/Spawning

    The spawn (eggs) of a clownfish.The black spots are the developing eyes. Spawn is the eggs and sperm released or deposited into water by aquatic animals.As a verb, to spawn refers to the process of freely releasing eggs and sperm into a body of water (fresh or marine); the physical act is known as spawning.

  9. Marine life - Wikipedia

    en.wikipedia.org/wiki/Marine_life

    General characteristics of a large marine ecosystem (Gulf of Alaska) Killer whales (orcas) are highly visible marine apex predators that hunt many large species. But most biological activity in the ocean takes place with microscopic marine organisms that cannot be seen individually with the naked eye, such as marine bacteria and phytoplankton.