What factors affect island species diversity and why?

Explained as below.

Explanation:

Islands account for 1/6th of the earth's surface area but consist of about 30% of the biodiversity hotspots in the world.

Factors like

Interactions among predators and prey (Invasibility)

Habitation sites that impact immigration.

Species adaptation to these places.

Resource availability.

As islands are rich in natural resources as islands are surrounded by waters on all sides thus remain isolated for long term periods.