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Journal of Applied Phycology

, Volume 5, Issue 4, pp 437–445 | Cite as

Influence of environmental factors on the growth in culture of a New Zealand strain of the fast-spreading algaHydrodictyon reticulatum (water-net)

  • Ian Hawes
  • Robert Smith
Article

Abstract

Hydrodictyon reticulatum (L.) Lagerh. is a recent addition to the New Zealand flora and is expanding its distribution rapidly. Proliferations of the alga now constitute an economic nuisance in waters which have not previously suffered filamentous algal blooms. To better understand the current and likely future spread of the alga and to identify possible management options the alga's growth requirements have been investigated. A strain isolated from New Zealand tolerated temperatures between 5 and 40 °C and salinities from 0 to 5‰. Optimal growth was at 25 °C, ⩾ 150 μmol photon m−2s−1 and in freshwater. Nett photosynthesis was saturated at photon flux densities of 100 and 160 μmol m−2s−1 at 12 and 20 °C, respectively. Growth rate was linearly related to internal N concentration and hyperbolically to internal P concentration. Minimum cellular nutrient contents, by weight, were 1% N and 0.2% P. Growth was saturated at contents of 5% N and 0.5% P under the conditions of culture (20 °C, 150 μmol photon m−2s−1). The alga maintained optimal cellular N content at low ambient nitrate concentrations (100 mg m−3) half optimum content at 18 mg m−3. Affinity for filtrable reactive phosphorus was not unusually high compared to other filamentous algae. We suggest that this alga is occupying a niche in New Zealand which has been precluded from other filamentous nuisance algae by low N concentration and N:P ratio. The significance of these findings in setting environmental targets for management of this nuisance alga is discussed.

Key words

growth prediction expanding distribution Hydrodictyon reticulatum nutrients salinity temperature 

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References

  1. Auer MT, Canale RP (1982a) Ecological studies and mathematical modelling ofCladophora in Lake Huron: 2. Phosphorus uptake kinetics. J. Great Lakes Res. 8: 84–92.Google Scholar
  2. Auer MT, Canale RP (1982b) Ecological studies and mathematical modelling ofCladophora in Lake Huron: 3. The dependence of growth rate on internal phosphorus pool size. J. Great Lakes Res. 8: 93–99.Google Scholar
  3. Björnsäter BR, Wheeler PA (1990) Effect of nitrogen and phosphorus supply on growth and tissue composition ofUlva fenestrata andEnteromorpha intestinalis (Ulvales, Chlorophyta). J. Phycol. 26: 603–611.Google Scholar
  4. Coofey BT, Miller ST (1988)Hydrodictyon reticulatum L. Lagerheim (Chlorophyta): a new genus record from New Zealand. New Zealand J. Bot. 26: 317–320.Google Scholar
  5. Corillion R, Guerlesquin M (1977) Remarques surHydrodictyon reticulatum (L.) Lagerh. (Euchlorophycée, Hydrodictyacée) dans la nord-ouest de la France et au Maroc Occidental. Bull. Mayenne — Sciences 1977: 80–88.Google Scholar
  6. Downes MT (1988) Taupo Research Laboratory chemical methods manual. DSIR Taupo Research Laboratory Report 102. 70 pp.Google Scholar
  7. Flett RJ, Hamilton RD, Campbell NGR (1975) Aquatic acetylene-reduction techniques: solutions to several problems. Can. J. Microbiol 22: 43–51.Google Scholar
  8. Fujita RM, Wheeler PA, Edwards TL (1989) Assessment of macroalgal nitrogen limitation in a seasonal upwelling region. Mar. Ecol. Progr. Ser. 53: 293–303.Google Scholar
  9. Gordon DM, Birch PB, McComb AJ (1981) Effects of inorganic phosphorus and nitrogen on the growth of an estuarineCladophora in culture. Bot. Mar. 24: 93–106.Google Scholar
  10. Graham JM, Auer MT, Canale RP, Hoffman JP (1982) Ecological studies and mathematical monitoring ofCladophora in Lake Huron: 4 Photosynthesis and respiration as functions of light and temperature. J. Great Lakes Res. 8: 100–111.Google Scholar
  11. Green JD, Viner AB, Lowe DJ (1987) The effect of climate on lake mixing patterns and temperatures. In Viner AB (ed.), Inland Waters of New Zealand. Science Information Publishing Centre, DSIR, Wellington, New Zealand 65–95.Google Scholar
  12. Guillard RRL, Lorenzen CJ (1972) Yellow-green algae with chlorophyllide C1,2. J. Phycol. 8: 10–14.Google Scholar
  13. Hawes I, Howard-Williams C, Wells R, Clayton J (1991a) Report on the status of water net (Hydrodictyon reticulatum) in New Zealand and options for its control. Report to the Water Net Technical Committee. MAF Ruakura, Hamilton, New Zealand. 64 pp.Google Scholar
  14. Hawes I, Howard-Williams C, Wells R, Clayton J (1991b) Invasion of water net,Hydrodictyon reticulatum: the surprising succes of an aquatic plant new to our flora. New Zealand J. mar. freshwat. Res. 25: 227–229.Google Scholar
  15. Heckey RG, Killham P (1988). Nutrient limitation of phytoplankton in freshwater and marine environments: a review of recent evidence on the effects of enrichment. Limnol. Oceanogr. 33: 796–822.Google Scholar
  16. Jassby AD, Platt T (1976) Mathematical formulation of the relationship between photosynthesis and light for phytoplankton. Limnol. Oceanogr. 21: 540–547.Google Scholar
  17. Lembi CA (1991). Algae as weeds: do we ignore them? Appl. Phycol. Forum. 8: 7–10.Google Scholar
  18. Lembi CA, O'Neal SW, Spencer DF (1988) Algae as weeds: economic impact, ecology and management alternatives. In Lembi CA, Waaland JR (eds), Algae and Human Affairs. Cambridge University Press, Cambridge, U.K. 455–481.Google Scholar
  19. Moss B (1973) The influence of environmental factors on the distribution of freshwater algae: an experimental study. II. The role of pH and the carbon-bicarbonate system. J. Ecol. 61: 157–177.Google Scholar
  20. Pocock MA (1960)Hydrodictyon: a comparative biological study. J.S. African Bot. 26: 167–319.Google Scholar
  21. Prescott GW (1970) Algae of the Western Great Lakes Area. W.C. Brown Company, Dubuque, Iowa.Google Scholar
  22. Raven JA, Glidewell SM (1975) Photosynthesis, respiration and growth in the shade algaHydrodictyon africanum. Photosynthetica 9: 361–371.Google Scholar
  23. Raven JA, Smith FA, Glidewell SM (1979) Photosynthetic capabilities and biological strategies of giant-celled and small-celled macro-algae. New Phytol. 83: 299–309.Google Scholar
  24. Reynolds CS (1984) The Ecology of Freshwater Phytoplankton, Cambridge University Press, Cambridge, U.K.Google Scholar
  25. Rosemarin AS (1982) Phosphorus nutrition of two potentially competing filamentous algae,Cladophora glomerata (L.) Kütz. andStigeoclonium tenue (Agardh) Kütz. from Lake Ontario. J. Great Lakes Res. 8: 66–72.Google Scholar
  26. Senft WH (1978) Dependence of light-saturated rates of algal photosynthesis on intracellular concentrations of phosphorus. Limnol. Oceanogr. 23: 709–718.Google Scholar
  27. Shuter BJ (1978) Size dependence of phosphorus and nitrogen subsistence quotas in unicellular organisms. Limnol. Oceanogr. 23: 1248–1255.Google Scholar
  28. Sörensen I (1950) Studies on the ecology ofHydrodictyon reticulatum (L.) Lagerh. Oikos 2: 197–212.Google Scholar
  29. White E (1983) Lake eutrophication in New Zealand — a comprison with other countries of the Organisation for Economic Cooperation and Development. New Zealand J. mar. freshwat. Res. 17: 437–444.Google Scholar
  30. White E, Payne GW (1978) Chlorophyll production in response to nutrient additions by the algae in Lake Rotorua water. New Zealand J. mar. freshwat. Res. 12: 131–138.Google Scholar
  31. Whitton BA (1970) Biology ofCladophora in freshwaters. Water Res. 4: 457–476.Google Scholar
  32. Whitton BA (1972) Filamentous algae as weeds. Third symposium on aquatic weeds. European Weed Research Council: 249–265.Google Scholar
  33. Wong SL, Clark B (1976) Field determination of the critical nutrient concentrations forCladophora in streams. Can. J. Fish. aquatic Sci. 33: 85–92.Google Scholar
  34. Wood AM, Leatham T (1992) The species concept in phytoplankton ecology. J. Phycol. 28: 723–729.Google Scholar

Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • Ian Hawes
    • 1
  • Robert Smith
    • 1
  1. 1.National Institute of Water and AtmosphereChristchurchNew Zealand

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