There are seven ecological reports, but not all of them are required for all the types of products for registration purposes. They are fish, daphnia, alga, earthworms, soil microorganisms, honeybees, and birds. They are fish, daphnia, alga, soil microorganisms, earthworms, bees, and birds. In case you already have this reports, they will be accepted. No need to conduct new local studies. But note, the studies must be done on the final product, not the active ingredient. If you have a study on the active ingredient, it will be not accepted. So all seven reports are required for herbicides, fungicides, insecticides, defoliates, and disectants. Seed treatment and rodenticides require three reports. Earthworms, soil microorganisms, and birds. Growth regulators as seed treatment, they require two reports. Earthworms, and soil microorganisms. But if your growth regulator has another type of implication, one more study is required on honeybees. Next, pheromones, only one study required, honeybees. Biological product, if it goes as seed treatment, only one study required for earthworms. But if your product has also another type of implication, two more studies required for soil microorganisms, and for honeybees. And finally fertilizers, they require two studies on soil microorganisms, and on earthworms. So check what studies you already have, and conduct only those that are lacking.
