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The monitoring of opportunistic macroalgal blooms for the water framework directive
Scanlan, C.; Foden, J.; Wells, E.; Best, M. (2007). The monitoring of opportunistic macroalgal blooms for the water framework directive, in: Devlin, M. et al. (Ed.) Implementation of the Water Framework Directive in European marine waters. Marine Pollution Bulletin, 55(Spec. Issue 1-6): pp. 162-171
In: Devlin, M.; Best, M.; Haynes, D. (Ed.) (2007). Implementation of the Water Framework Directive in European marine waters. Marine Pollution Bulletin, 55(Spec. Issue 1-6). Elsevier: Amsterdam. 297 pp., more
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X, more
Peer reviewed article  

Also published as
  • Scanlan, C.; Foden, J.; Wells, E.; Best, M. (2007). The monitoring of opportunistic macroalgal blooms for the water framework directive. Mar. Pollut. Bull. 55(Spec. Issue 1-6): 162-171. dx.doi.org/10.1016/j.marpolbul.2006.09.017, more

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Keywords
    Aerial photography; Algae; Algal blooms; Biomass; Classification; Remote sensing; Enteromorpha Link, 1820 [WoRMS]; Ulva Linnaeus, 1753 [WoRMS]; ANE, British Isles [Marine Regions]; ANE, Eire [Marine Regions]; Marine

Authors  Top 
  • Scanlan, C.
  • Foden, J.
  • Wells, E.
  • Best, M.

Abstract
    Among the various quality elements which the Water Framework Directive requires should be monitored are macroalgae. One aspect of these is the presence, in transitional waters particularly, of large blooms of opportunistic macroalgae, such as Ulva and Enteromorpha. Within the United Kingdom (UK) and Republic of Ireland (RoI) there are currently no set ecological quality objectives or standards for macroalgae. Nor are there standard methods for monitoring macroalgal blooms, although various combinations of aerial photography, remote sensing and measurements on the ground are used. This paper attempts to set a logical framework for the prioritisation of sites for monitoring, the development of a tiered monitoring procedure and the derivation of thresholds for classification. Draft threshold limits for percentage cover and biomass of macroalgae have been derived from the literature. The importance of secondary effects and physico-chemical parameters is discussed.

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