Welcome to the EA Forum, Shloka! Thanks for the great comment. I strongly upvoted it.
I have not looked into the effects of land use change on different groups of nematodes. From Table 1 of van den Hoogen et al. (2019), which is below, the most abundant soil nematodes are bacterivores and herbivores, so I speculate effects on these are the most important. However, I agree a given land use change may increase the welfare of nematodes of a given type, but decrease that of ones of a different type. This strengthens my conclusion that the priority is research informing how to increase the welfare of soil animals, not pursuing whatever land use change interventions naively seem to achieve that the most cost-effectively.
Welcome to the EA Forum, Shloka! Thanks for the great comment. I strongly upvoted it.
I have not looked into the effects of land use change on different groups of nematodes. From Table 1 of van den Hoogen et al. (2019), which is below, the most abundant soil nematodes are bacterivores and herbivores, so I speculate effects on these are the most important. However, I agree a given land use change may increase the welfare of nematodes of a given type, but decrease that of ones of a different type. This strengthens my conclusion that the priority is research informing how to increase the welfare of soil animals, not pursuing whatever land use change interventions naively seem to achieve that the most cost-effectively.