Sin embargo, para futuros trabajos vale la pena tener en cuenta que la riqueza de tardigrados puede depender de la humedad y la calidad del aire, de tal manera que los ambientes cercanos a centros urbanos pueden poseer bajas riquezas de tardigrados (
GLIME 2006).
The largest variability in fluorescence parameters within this group of bryophytes most likely reflects differences in the water retention capacity of individual species (
Glime, 2007) or particular microenvironmental conditions.
Glime, J 2006 Bryophyte Ecology: Physiological Ecology Estados Unidos: Michigan Technological University 593 p.
However, the transition from open water to fen and from fen to bog can also be satisfactorily attributed to autogenic internal processes such as lake-fill, clogging of drainage by fine organic detritus and acidification by means of cation exchange in mosses (
Glime et al., 1982; Wetzel, 1983; Crum, 1988).
Liverworts, in contrast, are relatively shade tolerant (
Glime and Vitt 1984), and Conocephalum frequently grows in shady regions of the river.
About seven or eight years ago, Jim Carlson, a sales representative for Pomp's Tire, told Pomp's retread technician Mike
Glime that there was a special need for a traction tire for the graders used by Alger County.
Local or individual accounts of peatlands in the region include sites in southern Michigan (Crow 1969a,b; Sytsma & Pippen 1981, 1982;
Glime et al.
Bryophytes play an important role in many freshwater ecosystems, both as primary producers and as microhabitats for aquatic organisms (
Glime and Clemons 1972,
Glime and Acton 1979, Slack 1984).
Watson 1980a, 1981a, Vitt and Slack 1984, Rydin 1986, 1987,
Glime and Vitt 1987).