To use arguments effectively they need to be tailored to the audience and the situation.
Arguments for biodiversity conservation are usually used in a decision making process that is located at some stage of a policy cycle.
The objective of such a process is (hopefully) a generally supported outcome. To get to that, there needs to be dialogue and trust between the people and parties involved.
As people as well as parties usually value different, and multiple, aspects of biodiversity, the best way to use arguments effectively is in tailored combinations (bundles).
Presentation also matters. Arguments can for instance be framed in positive or negative ways, for experts or for the general public.
A decision making process is also a learning process. Investing in the capacity to build effective arguments is therefore also a way to improve effectiveness.