. Cottage country : an environmental manual for cottagers. Cottages; Vacation homes; Environmental protection; Pollution. Wliat's a Coliform? Bacteriological tests on water are made primarily to determine the pre- sence of organisms of the coliform group. These exist in the intestines of some warm-blooded animals (includ- ing humans) and are used as an index of the presence of fecal material. Tlieir presence in any significant amount in water samples is an indi- cator of pollution, and the presence of other harmful pathogenic bacteria must be assumed until proved otherwise. Conversely, the abs
. Cottage country : an environmental manual for cottagers. Cottages; Vacation homes; Environmental protection; Pollution. Wliat's a Coliform? Bacteriological tests on water are made primarily to determine the pre- sence of organisms of the coliform group. These exist in the intestines of some warm-blooded animals (includ- ing humans) and are used as an index of the presence of fecal material. Tlieir presence in any significant amount in water samples is an indi- cator of pollution, and the presence of other harmful pathogenic bacteria must be assumed until proved otherwise. Conversely, the absence of col- iforms is considered sufficient evi- dence of the absence of pollution and indicates the water is suitable for drinking, bathing, etc., at the time of sampling. However, no surface water is recommended for drinking even though coiiforms are absent. Excessive Fertilization. Ti'lllulc iivcils. syiiipldiii of eutr<ipbiaili<m Why We Need Weeds, Why We Don't In recent years, most cottagers ha\e become well aware of the problems associated with nutrient enrichment (eutrophication) of recreaticjnal lakes. The symptoms are well known; algae and excessive weeds. But it's important to realize that small to moderate amounts of aquatic plants and algae are necessary to main- tain a balanced aquatic environment. They provide food and a suitable environment for the growth of aquatic invertebrate organisms, which serve as food for fish. Moreover, shade from large aquatic plants also provides pro- tection for young game and forage fish and helps keep the lower water cool, which is essential to certain fish. In addition, numerous aquatic plants are used for food and/or protec- tion by many species of waterfowl. Too much growth, however, creates an imbalance in the natural plant and animal community Tlie end result is that there may be too much cover for fish, causing their growth to be stunted. Also, such desirable forms of life as sport fish can be eliminated, and unsiglitly
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