Metapopulations in the Context of Patch Dynamics. A metapopulation is a population of populations (Levins 1969,1970); in which distinct subpopulations (local populations) occupy spatially separated patches of habitat.
Osteoporosis is a disease where decreased bone strength increases the risk of a broken bone. It is the most common reason for a broken bone among people who are old.Bones that commonly break include the back bones, the bones of the forearm, and the hip.Until a broken bone occurs there are typically no symptoms.steoporosis is a disease where decreased bone strength increases the risk of a broken bone. It is the most common reason for a broken bone among people who are old.
Diffuse idiopathic skeletal hyperostosis (DISH) is a disorder in which there is bone growth in the ligaments, particularly where they attach to the bones of the spine. You may have no symptoms.