A comprehensive review of conservation dogs: "1,220 publications, including 916 scientific ones, covering 2,464 individual cases—most of them (1,840) scientific."

There is a LOT of quality and informative information that demonstrates the effectiveness of dogs in support of conservation projects.

https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/2041-210X.13560