A lot, especially in organismal biology / field biology. We even name things after him, like carnivorous plants (Nepenthes attenboroughii), the whole genus Sirdavida, a hawkweed (Hieracium attenboroughianum), ... more than 50 taxa in all.

The unfortunate thing is that the area of biology he has drawn people to is difficult to make a living in. Jobs are few, there is intense compettion for them, they don't pay well, and there is often little job security. In some ways it is the Art History of a STEM discipline.