An ecosystem engineer is any
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 Another example of ecosystem engineers in marine environments would be
In marine environments, filter feeders and plankton are ecosystem engineers because they alter turbidity and light penetration, controlling the depth at which photosynthesis can occur. This in turn limits the primary productivity of benthic and pelagic habitats  and influences consumption patterns between trophic groups.
Research has suggested primates as ecosystem engineers as a result of their feeding strategies - frugivory and folivory - making them act as seed dispersers.  As a whole primates are very abundant and feed on a large quantity of fruit that is then distributed around their territory. Elephants have also been designated ecosystem engineers as they cause very large changes to their environment whether it be through feeding, digging or migratory behavior. 
Besides the previously mentioned beaver acting as an ecosystem engineer, other terrestrial animals do the same. This may be through feeding habits, migration patterns or other behaviors that result in more permanent changes.
Due to the complexity of many communities and ecosystems, restoration projects are often difficult. Ecosystem engineers have been proposed as a means to restore a given area to its previous state. While ideally these would all be natural agents, with today’s level of development some form of human intervention may be necessary as well. In addition to being able to assist in restoration ecology, ecosystem engineers may be a helpful agent in invasive species management.  New fields are developing which focus on restoring those ecosystems which have been disrupted or destroyed by human activities as well as developing ecosystems that are sustainable with both human and ecological values. 
Humans are thought to be one of the most dramatic ecosystem engineers. Through urban development, agricultural practices, logging, damming and mining, humans have changed the way they interact with the environment. This interaction is more studied in the field of human ecology.
Humans as ecosystem engineers
Introduced species, which may be invasive species, are often ecosystem engineers. Kudzu, a leguminous plant introduced to the southeast U.S., changes the distribution and number of animal and bird species in the areas it invades. It also crowds out native plant species. The zebra mussel is an ecosystem engineer in North America. By providing refuge from predators, it encourages the growth of freshwater invertebrates through increasing microhabitats. Light penetration into infected lakes also improves the ecosystem, resulting in an increase in algae. In contrast to the benefits some ecosystem engineers can cause, invasive species often have the reverse effect.
Introduced species as ecosystem engineers
 Beavers have also been shown to maintain habitats in such a way as to protect the rare St. Francis' satyr butterfly and increase plant diversity.  by conserving an ecosystem engineer you may be able to protect the overall diversity of a landscape. umbrella species Thoughts may be that similar to other  The presence of some ecosystem engineers has been linked to higher species richness at the
Being able to identify ecosystem engineers in an environment can be important when looking at the influence these individuals may have over other organisms living in the same environment - especially in terms of resource availability. 
Autogenic engineers modify the environment by modifying themselves. Trees are a good example, because as they grow, their trunks and branches create habitats for other living things; these may include squirrels, birds or insects among others. In the tropics, lianas connect trees, which allow many animals to travel exclusively through the forest canopy.
 An additional example may be that of woodpeckers or other birds who create holes in trees for them to nest in. Once these birds are through with them, the holes are used by other species of birds or mammals for housing.  Allogenic engineers modify the
Jones et al. identified two different types of ecosystem engineers:
- Allogenic engineers 1.1
- Autogenic engineers 1.2
- Importance 2
- Introduced species as ecosystem engineers 3
- Humans as ecosystem engineers 4
- Terrestrial environments 5.1
- Marine environments 5.2
- See also 6
- Bibliography 7
- References 8