progressive tissue changes Several dystrophic diseases (e g , muscular dystrophy) are characterized by muscle wasting and dysfunction
lake type featuring acidic, stained-brown water, low in electrolytes and with reduced transparency due to colloidal and dissolved hummus Calcium deficiency blocks bacterial action and therefore organic material does not decay Many dystrophic lakes are in fact oligotrophic due to lack of nutrients, plankton and algal flora despite low dissolved oxygen and low biodiversity (Cole, 1994)