A survey of filamentous algal proliferations in New Zealand rivers

Abstract New Zealand rivers were surveyed for filamentous algal proliferations following prolonged periods of low flows to define their extent, standing crop, and composition. Significant growths were found at 167 of the 423 sites surveyed. The geometric mean river bed cover of filamentous algae was 26% in summer and 22% in winter. Proliferations of >40% cover occurred at 16% of the sites. The geometric mean standing crop was 15.3 g/m2 (ash‐free dry weight) in summer and 1.87 g/m2 in winter. Proliferations of >50 g/m2 (AFDW) occurred at 8% of the sites. A taxonomic classification analysis of the summer data identified nine main clusters of sites which appeared to correspond to different catchment land uses. One, or a combination, of the following taxa dominated these clusters: Ulothrix zonata, Phormidium spp., Sti‐geoclonium sp., Spirogyra spp., Compsopogon coe‐ruleus, Oedogonium spp., Cladophora sp., Cladophora glomerata, Rhizoclonium sp., and Melosira varians. Ulothrix zonata and Diatoma hiemale var. me...

[1]  R. Horner,et al.  Stream Periphyton Development in Relation to Current Velocity and Nutrients , 1981 .

[2]  J. Wilhm,et al.  USE OF ARTIFICIAL SUBSTRATA TO ESTIMATE THE PRODUCTIVITY OF PERIPHYTON1 , 1966 .

[3]  Donald F. Boesch,et al.  Application of numerical classification in ecological investigations of water pollution , 1977 .

[4]  R. Patrick,et al.  The diatoms of the United States. , 1966 .

[5]  D. J. Nelson,et al.  Periphyton production and grazing rates in a stream measured with a 32p material balance method , 1972 .

[6]  McIntire Cd.  Physiological-ecological studies of benthic algae in laboratory streams. , 1968 .

[7]  R. Horner,et al.  Development of nuisance periphytic algae in laboratory streams in relation to enrichment and velocity , 1983 .

[8]  Gene E. Likens,et al.  Effects of Forest Cutting and Herbicide Treatment on Nutrient Budgets in the Hubbard Brook Watershed-Ecosystem , 1970 .

[9]  H. Maccrimmon,et al.  Assessing Changes in Biomass of Riverbed Periphyton , 1978 .

[10]  Nancy B. Grimm,et al.  TEMPORAL SUCCESSION IN A DESERT STREAM ECOSYSTEM FOLLOWING FLASH FLOODING , 1982 .

[11]  Structural Characteristics of Benthic Algal Communities in Laboratory Streams , 1968 .

[12]  G. Minshall,et al.  Periphyton, chlorophyll a, and diatoms of the Middle Fork of the Salmon River, Idaho , 1983 .

[13]  N. Foged.  Diatoms in New Zealand, the North Island , 1981 .

[14]  H. Kobayasi.  Chlorophyll Content in Sessile Algal Community of Japanese Mountain River , 1961 .

[15]  H. A. Hawkes,et al.  The role of phosphorus in the growth of Cladophora , 1973 .

[16]  M. Bothwell.  Phosphorus limitation of lotic periphyton growth rates: An intersite comparison using continuous‐flow troughs (Thompson River system, British Columbia)1 , 1985 .

[17]  J. Newbold,et al.  Phosphorus Spiralling in a Woodland Stream: Seasonal Variations , 1985 .

[18]  Lawrence H Kaufman.  Stream Aufwuchs accumulation processes: Effects of ecosystem depopulation , 1980, Hydrobiologia.

[19]  G. Hornberger,et al.  Relationships among substrate, flow, and benthic microalgal pigment density in the Mechums River, Virginia 1 , 1978 .

[20]  A. Marker,et al.  The population and production dynamics of benthic algae in an artificial recirculating hard-water stream , 1982 .

[21]  S. Gregory,et al.  The dynamics and structure of periphyton communities in three Cascade Mountain streams: With 3 figures and 3 tables in the text , 1975 .

[22]  G. W. Prescott.  How to know the freshwater algae. , 1964 .

[23]  John L. Blum,et al.  The ecology of river algae , 1956, The Botanical Review.

[24]  Ecology of the diatom community of the upper East Gallatin River, Montana with in situ experiments on the effect of current velocity on features of the aufwuchs , 1971 .

[25]  S. Gregory,et al.  Temporal changes in periphyton standing crop during an unusually dry winter in streams of the Western Cascades, Oregon , 1981, Hydrobiologia.

[26]  S. Fisher,et al.  Nitrogen and phosphorus dynamics in hot desert streams of Southwestern U.S.A. , 1981, Hydrobiologia.

[27]  C. D. Mcintire,et al.  Laboratory Studies of Periphyton Production and Community Metabolism in Lotic Environments , 1965 .

[28]  Ba Whitton,et al.  Biology of Cladophora in freshwaters , 1970 .

[29]  M. L. Murphy,et al.  Effects of canopy modification and accumulated sediment on stream communities. , 1981 .

[30]  E. Fjerdingstad.  Pollution of Streams Estimated by Benthal Phytomicro-Organisms I. A Saprobic System Based on Communities of Organisms and Ecological Factors , 1964 .

[31]  J. Stockner,et al.  Autotrophic Production in Carnation Creek, a Coastal Rainforest Stream on Vancouver Island, British Columbia , 1976 .

[32]  J. Stockner,et al.  Enhancement of Autotrophic Production by Nutrient Addition in a Coastal Rainforest Stream on Vancouver Island , 1978 .

[33]  A. Hirsch.  Biological evaluation of organic pollution of New Zealand streams. , 1958 .

[34]  Tj Entwisle,et al.  Survey of freshwater red algae (Rhodophyta) of South-Eastern Australia , 1984 .