Classification. Other classification systems exist however. Cowardin (1979) recognizes the following five major wetland classifications: marine, estuarine, lacustrine, riverine, and palustrine. Marine and estuarine wetlands are associated with the ocean and include coastal wetlands, such as tidal marshes. Lacustrine wetlands are associated with lakes, while riverine wetlands are found along rivers and streams. Palustrine wetlands may be isolated or connected wet areas and include marshes, swamps, and bogs.
Top 10 Doctor insights on: Spinal Stenosis Knee Pain. 1 Pain in front top portion of legs from knees up after walking relieved when sitting. Had surgery for spinal stenosis 15 months ago with relief. Muscle strain: Male just over one year post-surgery for spinal stenosis has bilateral pain in quads w. walking.
If the narrowing is substantial, it causes compression of the spinal cord or spinal nerves, which causes the painful symptoms of lumbar spinal stenosis, including low back pain, buttock pain, and leg pain and numbness that is made worse with walking and relieved by resting.Medically Reviewed by a Doctor on 5/7/2015. Lumbar spinal stenosis is a condition whereby either the spinal canal (central stenosis) or one or more of the vertebral foramina (foraminal stenosis) becomes narrowed. 2  Lumbar spinal stenosis is typically caused by degenerative arthritis.