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Submitted on: 21 January 2006.
Revised on: 17 April 2006.
Accepted on: 13 June 2006.
___________________BIOLOGY AND ENVIRONMENT-PROCEEDINGS OF THE ROYAL IRISH ACADEMY
Submitted on: 29 May 1999.
Revised on: 20 June 1999.
Accepted on: 06 July 1999.
___________________BIOLOGY AND ENVIRONMENT-PROCEEDINGS OF THE ROYAL IRISH ACADEMY
Submitted on: 30 October 2005.
Revised on: 31 December 2005.
Accepted on: 21 February 2006.
___________________BIOLOGY AND ENVIRONMENT-PROCEEDINGS OF THE ROYAL IRISH ACADEMY
Submitted on: 15 December 2013.
Revised on: 19 March 2014.
Accepted on: 05 April 2014.
___________________BIOLOGY AND ENVIRONMENT-PROCEEDINGS OF THE ROYAL IRISH ACADEMY
Submitted on: 22 August 2000.
Revised on: 03 October 2000.
Accepted on: 30 November 2000.
___________________BIOLOGY AND ENVIRONMENT-PROCEEDINGS OF THE ROYAL IRISH ACADEMY
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Submitted on: 28 July 2001.
Revised on: 04 October 2001.
Accepted on: 23 November 2001.
___________________BIOLOGY AND ENVIRONMENT-PROCEEDINGS OF THE ROYAL IRISH ACADEMY