As the casein tempera, it is considered that some Pompeian wall. paintings were made with this particular technique, which in medieval. times translated into a glue made of lime and cheese which stands for the. modern equivalent of calcium caseinate glue.
APPLICABLE INTERNATIONAL LAW The Cormorant is protected under the 1916 Migratory Bird Treaty with Canada, indirectly under the Ramsar Convention, and the Migratory Bird Treaty Act of 1918 (MBTA). The cormorant receives no protection from the Convention of Migratory Species or CITES.hile the Ramsar Convention and the Migratory Bird Treaty with Canada remain possible avenues for international protection of the cormorant (see infra), it is the Migratory Bird Treaty Act of 1918 (MBTA) that is the primary instrument of international law concerning the migratory birds in North America.
The Lontra Canadensis is a predator species, and in many rivers it is one of the top predators. This means that through predation, the river otter helps to control the populations of the species it preys on. River otters are also important because they are a key indicator of the health of the ecosystem.lthough the river otter population is not near extinction there is a threat to these animals that conservation efforts and governments would like to watch. The river otters are considered protected because they are in danger of being overhunted for their magnificent pelts.