Blelham Tubes

Synopsis: Using giant plastic tubes, the Freshwater Biological Association created model lakes within a natural lake, Blelham Tarn, and they began an investigation into the primary production of freshwater algae that has been running for 14 years. It was an ambitious field experiment that provided a unique opportunity to study algae under natural conditions. The work yielded information on why and how numbers and species of algae undergo seasonal fluctuation, so much so that they can predict and, if necessary, postpone the development of algal blooms. Dr John Lund, who originated and developed the project, explains some of their early experiments and Dr Colin Reynolds comments on their latest discoveries.
Series: Ecology, Course S326
Language: English
Country: Great Britain
Medium: Video; Videocassette. Standard formats. col. 25 min.
Year of production: 1984
Availability: OUT OF DISTRIBUTION
Subjects: Biology; Environmental science
Keywords: algae; ecosystems

Producer

Cast

Name: Open University Worldwide
Web: http://www.ouw.co.uk External site opens in new window
Phone: +44 (0) 1908 274066
Address: Walton Hall
Milton Keynes
MK7 6AA
Notes: NB. As of May 2016 Open University Worldwide are no longer distributing DVDs. They have posted this message on their website: ‘Unfortunately Open University Worldwide Limited has decided that product sales are no longer viable given the reduced funding to Higher Education institutions and diminishing demand for the products we have traditionally stocked. At present the Open University Students Association (OUSA) will continue to sell the "Good Study Guide", and we are in discussion with other possible distributors to continue to make The Open University’s products available for purchase. As soon as we have any information on other channels of distribution we will update this notice’. Some products are still available via second hand dealers on Amazon.co.uk

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British Universities Film & Video Council