Submitted on: 19 June 2003.
Revised on: 28 September 2003.
Accepted on: 29 October 2003.
___________________Folia Oecologica---WALTER DE GRUYTER GMBH
Submitted on: 31 October 2014.
Revised on: 16 December 2014.
Accepted on: 23 January 2015.
___________________Folia Oecologica---WALTER DE GRUYTER GMBH
Submitted on: 28 February 2008.
Revised on: 30 May 2008.
Accepted on: 25 June 2008.
___________________Folia Oecologica---WALTER DE GRUYTER GMBH
Submitted on: 04 January 1999.
Revised on: 01 February 1999.
Accepted on: 16 March 1999.
___________________Folia Oecologica---WALTER DE GRUYTER GMBH
Submitted on: 15 August 2022.
Revised on: 10 November 2022.
Accepted on: 27 December 2022.
___________________Folia Oecologica---WALTER DE GRUYTER GMBH
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Submitted on: 21 July 2008.
Revised on: 30 August 2008.
Accepted on: 12 October 2008.
___________________Folia Oecologica---WALTER DE GRUYTER GMBH
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