Hello Hans; You might find some of what you are looking for by looking up this paper. You can find it on Google Scholar.

"The global distribution of known and undiscovered ant biodiversity." The paper is about ant biogeography but it is compared to that of mammals and hotspots in their distribution. A number of useful citations.

Best regards, Jim Des Lauriers

Hello Hans, Depending on the biogeographic region/area in which you are working/are interested, presence (and possible species diversity) of the Order Primates could be a very good indicator of both habitat quality and intactness of ecological interactions (such as seed dispersal).

When quantifying the biological diversity of a certain geographic region, it is important to consider the orders of mammals present in that region. While all orders of mammals are important in their own right, some orders may be more significant than others in terms of overall biological diversity. The following are some of the most significant mammal orders in terms of diversity:

Other orders that are significant in terms of mammal diversity include Lagomorpha (rabbits and hares), Soricomorpha (shrews and moles), and Perissodactyla (horses and rhinos). However, the significance of each order will depend on the specific geographic region being considered

Hi.

In many oceanic islands of the world, bats are the only terrestrial mammals that have colonized such territories naturally, so the order Chiroptera is very important to evaluate the global native biodiversity of islands, especially because many times it has evolved into local endemic species and subspecies.

Best regards.

Hello all; Science Magazine (28 Apr 2023) contains a series of papers that directly address this topic. Ruben's comment is specifically relevant. Best regards, Jim Des Lauriers