This kind of intelligence isn’t part of the first theory of Gardner, but it was introduced in a second revision, in 1995.
It is totally based on the recognition,respect and awareness of the nature, in all its aspects.
It’s based on the ability to recognize flora and fauna and to use this capacity in some important sectors such as farming, biological science etc. In some cases, people with this kind of intelligence are vegetarian.
This kind of intelligence is linked with the love for the earth.