I'm not sure, but is antibiosis the opposite of symbiosis? So wouldn't amensalism be a type of antibiosis? And yes, I guess the humans/insects example could work, but I'm not sure if that fits the criteria as a close ecological relationship.
Still, good answer. Your go. Clarifications for the above are appreciated as well.
- Oops, sorry. I don't actually do Ecology; I just have a feeling I'll be filling in at regions/state.
What affects species richness on an island?
The Penicillium example was good. Another one is black walnut trees, that secrete a natural weed killer for no apparent ecological reason.
I had this typed out, but I saved it as a draft in case someone else wanted to go... Here is the third opinion you asked for, sci duck, haha...