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. Or you could have minor spinal stiffness and pain.