-
Leahy, P.P., Rosenshein, J.S., and Knopman, D.S., 1990,
Implementation plan for the national water-quality
assessment program: U. S. Geological Survey Open-File
Report 90-174, 10 p.
-
Leopold, L.B., and Wolman, M.G., 1957, River channel
patterns: Braided, meandering, and straight: U.S.
Geological Survey Professional Paper 282-B, p. 343-346.
-
Lethbridge, R.C., Borowitzka, M.A., and Benjamin, K.J.,
1988, The development of an artificial, Amphibolis
-like seagrass of complex morphology and
preliminary data on its colonization by epiphytes:
Aquatic Botany, v. 31, p. 153-168.
-
Lowe, R.L., 1974, Environmental requirements and
pollution tolerance of freshwater diatoms: Cincinnati,
Ohio, U.S. Environmental Protection Agency, National
Environmental Research Center, Office of Research and
Development, EPA-670/4-74-005, 334 p.
-
_____ 1980, Phytobenthic ecology and regulated streams,
in Ward, J.V., and Stanford, J.A., eds.,
The ecology of regulated streams: New York, Plenum
Press, p. 25-34.
-
Lowe, R.L., and Gale, W.F., 1980, Monitoring river
periphyton with artificial benthic substrates:
Hydrobiologia, v. 69, no. 3, p. 235-244.
-
McCormick, P.V., and Stevenson, R.J., 1989, Effects of
snail grazing on benthic algal community structure in
different nutrient environments: Journal of the North
American Benthological Society, v. 8, no. 2, p.
166-172.
-
McIntire, C.D., 1968, Structural characteristics of
benthic algal communities in laboratory streams:
Ecology, v. 49, p. 520-537.
-
Meador, M.R., Cuffney, T.F., and Gurtz, M.E., 1993,
Methods for sampling fish communities as part of the
National Water-Quality Assessment Program: U.S.
Geological Survey Open-File Report 93-104, 40 p.
-
Meador, M.R., Hupp, C.R., Cuffney, T.F., and Gurtz,
M.E., 1993, Methods for characterizing stream habitat as
part of the National Water-Quality Assessment Program:
U.S. Geological Survey Open-File Report 93-408, 48 p.
-
Millie, D.F., and Lowe, R.L., 1983, Studies on Lake
Erie's littoral algae: Host specificity and temporal
periodicity of epiphytic diatoms: Hydrobiologia, v.
99, p. 7-18.
-
Palmer, C.M., 1969, A composite rating of algae
tolerating organic pollution: Journal of Phycology, v.
5, p. 78-82.
-
_____ 1977, Algae and water pollution: Cincinnati, Ohio,
U.S. Environmental Protection Agency, Municipal
Environmental Research Laboratory, Office of Research
and Development, EPA-600/9-77-036, 124 p.
-
Patrick, R., Horn, M.H., and Wallace, J.H., 1954, A new
method for determining the pattern of the diatom flora:
Notulae Naturae, v. 259, p. 1-12.
-
Patrick, R., and Reimer, C.W., 1966, The diatoms of the
United States exclusive of Alaska and Hawaii, v. I:
Monographs of the Academy of Natural Sciences of
Philadelphia, no. 13, Lititz, Pa., Sutter House, 688 p.
-
Pringle, C.M., 1987, Effects of water and substratum
nutrient supplies on lotic periphyton
growth: An integrated bioassay: Canadian Journal of
Fisheries and Aquatic Sciences, v. 44, p. 619-629.
-
Pringle, C.M., and Bowers, J.A., 1984, An in-situ
substratum fertilization technique: Diatom colonization
on nutrient-enriched sand substrata: Canadian Journal
of Fisheries and Aquatic Sciences, v. 41, p.
1247-1252.
-
Pryfogle, P.A., and Lowe, R.L., 1979, Sampling and
interpretation of epilithic lotic diatom communities,
in Wetzel, R.L., ed., Methods and measurements of
periphyton communities: A review: Philadelphia, Pa.,
American Society for Testing a nd Materials, ASTM STP
690, p. 77-89.