According to Wikipedia, Environmental stewardship as defined by Wikipedia refers to responsible use and protection of the natural environment through conservation and sustainable practices.
There are 3 types of environmental stewards: doers, donors, and practitioners.
Doers go out and help the cause by taking action. For example, the doers in an oil spill would be the volunteers that go along the beach and help clean up the oil from the beaches.
Donor is the person that financially helps the cause. They can do anything from donating their money, to hosting public events to raise funds. They are typically governmental agencies.
Practitioners work on a day-to-day basis to steer governmental agencies, scientists, stakeholder groups, or any other group toward a stewardship outcome.
These 3 groups make up environmental stewards to keep the ecosystem running healthily. Anybody can be an environmental steward by being aware and knowledgeable of the world around them and making sure they do as little as possible to negatively impact our world. Without these groups it would be hard to get any sort of sustainability in our increasingly industrially based world.
What type of environmental steward are you?