Submitted on: 19 April 1998.
Revised on: 09 August 1998.
Accepted on: 04 September 1998.
___________________AQUATIC SCIENCES---SPRINGER BASEL AG
Submitted on: 12 February 2018.
Revised on: 11 April 2018.
Accepted on: 25 April 2018.
___________________AQUATIC SCIENCES---SPRINGER BASEL AG
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Submitted on: 24 November 2017.
Revised on: 19 March 2018.
Accepted on: 13 May 2018.
___________________AQUATIC SCIENCES---SPRINGER BASEL AG
Submitted on: 04 July 2007.
Revised on: 07 October 2007.
Accepted on: 10 November 2007.
___________________AQUATIC SCIENCES---SPRINGER BASEL AG
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Submitted on: 17 February 2001.
Revised on: 12 May 2001.
Accepted on: 28 June 2001.
___________________AQUATIC SCIENCES---SPRINGER BASEL AG