Professor & Head | Botany & Genetics, Department of Plant Sciences, UFS
Bloemfontein | 2002 - present

Vice-President | ISAP
2002 - present

Chair | Alliance 2000+
2002 - present

Chair | UVPERSU
1998 - present

Professor | University of the Free State
Bloemfontein | 1992 - present

Professor & Head | University of the Free State
Bloemfontein | 1993 - 2001

Assistant Professor | Institute for Environmental Sciences, UFS
Bloemfontein | 1984 - 1998

Head | Centre for Environmental Sciences | University of the Free State
Bloemfontein | 1994 - 1996

Assistant Professor | Department Botany & Genetics | University of the Free State
Bloemfontein | 1989 - 1993

Researcher | Institute for Environmental Sciences; Department Botany & Genetics, UFS
Bloemfontein | 1974 - 1993

Director | Unit for Limnology | UFS
Bloemfontein | 1988 - 1989

Acting Director | Institute of Environmental Sciences, UFS
Bloemfontein | 1987 - 1988

Senior Lecturer | Institute for Environmental Sciences, UFS
Bloemfontein | 1974 - 1983

Lecturer | Department Botany | University of the Free State
Bloemfontein | 1971 - 1973

Assistant | Department Botany | University of the Free State
Bloemfontein | 1968 - 1970

University of the Free State

Completed 1974

Doctor of Science

University of the Free State

Completed 1971

Master of Science

University of the Free State

Completed 1969

Bachelor of Science

University of the Free State

Completed 1967

Bachelor of Science

Centenary Medal | UFS

Silver Medal | SA Assoc Botanists

Max-Planck-Stipendium | Max-Planck-Society

GSE | Rotary International

Var | Var

Auth

International Association of Applied Psych & Biotech

President, 1999 - 2002

Society Int'lis Limnologiae: International Com

Representative, 1992 - 2001

Institute of SA Ecologists

Member

Biological Work Group of the UOFS

Committee Member

SA Council for National Science Profs

Member

International Society for Applied Psych

Member

Society Int'lis Limnologiae

Member, 1974 - present

SA Association of Aquatic Scientists

Member

SA Association of Botanists

Member

Botanical Society of SA

Member

International Association of Applied Psych and Biotech

Member, 1998 - present

Biological Society of the UFS

Chair

Union of SA Science Students

Council Member

Science Students Association of the UFS

Chair

International Association of Applied Psych & Biotech

Vice-President, 2003 - present

Var Editorial Panels

Member

Group on Aquatic Productivity

Member, 1976 - present

Nature's Valley Ratepayers Assoc

Chair, 1988 - present