### scheme | ecosystem:

Aquatic ecosystem
* account for roughly half of the global production of carbon on a yearly basis.
* are dynamic natural systems that respond to change, either manmade or natural
  - home to an abundant array of plant and animal life
  - impacted by a broad range of human activities
  - more sensitive to pollutants than terrestrial
* are particularly at risk from introductions of exotic species
  - vulnerable to the impact of permethrin
  - some of the most intricate and intriguing found in nature
  - streams, rivers, ponds, lakes and reservoirs
  - the most at risk
  - very rich in lifeforms
* contain a wide variety of species each dependent on others for their survival.
* go through a natural aging process once they are formed.
* perform many important environmental functions.

Business ecosystem
* involve communities of people and companies coevolving together.
* span a variety of industries.

### scheme | ecosystem:

Coastal ecosystem
* are critical habitats, nurturing many species of plants and animals
  - diverse and productive, and subjected to ever increasing pressures
  - dynamic, diverse areas of enormous ecological significance
  - highly dynamic, diverse areas of enormous ecological significance
  - important economically for tourism and recreation
  - incredibly unique and constantly changing with the tide
  - one of the richest locations of marine biodiversity
* can act as a buffer against tsunamis.
* occur at the interface between land and sea.
* protect land-based communities from natural disasters.
* tend to have very high biological productivity.

Different ecosystem
* are characterized by different biotic and abiotic factors.
* produce food at different rates.

Forest ecosystem
* Many forest ecosystems are fire dependent.
* act as sink as well as source of carbon for the atmosphere
  - sources and sinks of carbon dioxide at the same time
* are dynamic and ever changing
  - more than trees
  - productive of critical life support systems
  - quite variable throughout the range of the northern spotted owl
* play a key role in protecting the environment.
* provide a diversity of plant, animal, and fungal species.

Freshwater ecosystem
* are a subset of Earth's aquatic ecosystems
  - both disproportionally rich and disproportionally imperiled
* consist of moving bodies of water such as rivers, streams, ponds and lakes.
* have already or are likely to be highly modified.
* occupy less than one percent of the earth's surface.
* tend to have the highest proportion of species threatened with extinction.

Healthy ecosystem
* are biologically diverse, have complex interrelationships, and are sustainable
  - good for our environment
  - the foundation for strong fish and wildlife communities
* can tolerate periodic disturbances.
* clean the air and water.
* mean healthy people which mean a healthy economy.
* provide vital goods and services to humans and other organisms.

Large ecosystem
* present some of the most difficult problems of environmental science and policy.
* provide opportunities for learning from and about the real world.

Marine ecosystem
* Some marine ecosystems appear to be affected on a large scale by mobile gear.
* are biologically complex and respond to many
  - complex, with layer upon layer of interdependent relationships
* are home to many kinds of living things that occur nowhere else
  - phyla that live nowhere else

Mountain ecosystem
* are also fragile
  - very sensitive to climatic changes
  - important reservoirs of biodiversity
* contain considerable biodiversity and are home to many endangered species.

Pond ecosystem
* are home to many organisms that live in or near the water.
* serve as important habitats for various aquatic and terrestrial species.