Freshwater Algae of North America. Ecology and by John D. Wehr, Robert G. Sheath, J. Patrick Kociolek

By John D. Wehr, Robert G. Sheath, J. Patrick Kociolek

  • ''Freshwater phycologists and aquatic microscopists will welcome this booklet because the first accomplished, single-volume therapy of the freshwater algae in over part a century...The Editors and their participants have performed a great activity in synthesizing this mass of information, and there's no doubt that this paintings could be a customary reference, to be by means of up-dated editions.'' -MODERN MICROSCOPY magazine (2005) ''This is a superb booklet that offers broad taxonomic details that has formerly been tough to entry by means of any yet taxonomic experts. ...Any scholar, researcher, or environmental administration specialist who in many instances works with freshwater ecology must have entry to this authoritative and thorough book.'' —Walter Doods, Kansas country collage (August 2002) ''This should be a welcome boost to the shelf of phycological researchers and lecturers. The insurance is finished either taxonomically within the diversity of ecological themes. For these folks focusing on freshwater algae, no matter if or not it's deciding upon them or learning their ecology, this sort of textual content might be a useful reference work.'' —Richard M. McCourt, affiliate Curator of Botany, The Academy of common Sciences (2002) ''...finally after part a century we freshwater phycologists have a unmarried, finished quantity that updates G.M. Smith's Freshwater Algae of the USA. it's actually remarkable work...Students, water administration forms and skilled phycologists will all suppose the necessity to dig out inheritor plankton nets and scum scrapers, resurrect their hip boots and make a few rainy mounts simply to get an opportunity to take advantage of this book.'' —James Wee, Loyola collage (2002)

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1997). Phytoplankton are an important food source for zooplankton in rivers, even if grazers do not regulate algal biomass or production as effectively as in lakes. Grazing pressure is less important because the zooplankton community is usually dominated by smallbodied cladocerans and rotifers (Winner, 1975, Köhler, 1995). Rivers select for small-bodied zooplankton because of their ability to grow rapidly enough to compensate for downstream losses (Viroux, 1997). , 1994). , 1994). , 1998). Models designed to predict phytoplankton production in large rivers primarily have been devised for specific conditions, such as the influence of temperature and irradiance on phytoplankton production in one reach of the Great Whale River, Quebec (Rae and Vincent, 1998).

1989; Pandian and Marian, 1986). , 1987). The Riviere de L’Achigan (Quebec) is an unshaded stony stream interspersed with a chain of small lakes that alter flow conditions immediately downstream (lower disturbance; Cattaneo, 1996). Biomass and species composition of benthic algae on gravel varied inversely with distance from lake outlets, yet this impoundment effect was unimportant for algae that colonize boulders. Only boulders supported communities of large filamentous and plumose forms such as Draparnaldia (Chlorophyceae), Stigonema (Cyanobacteria), and Batrachospermum (Rhodophyta).

Bogs are a stage in the long-term succession of some lake basins that are in the gradual process of filling in. A pioneering limnological study of Cedar Bog Lake (MN; Lindeman, 1941a, b, 1942) documented the vegetational history and aquatic food webs, and was one of the first estimates of freshwater algal productivity. Lindeman’s study helped launch the trophic–dynamic concept in ecology and served as the basis for subsequent energetic studies of freshwater food webs and development of the ecosystem concept (Cole, 1994).

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