John L. Harper
He was born in 1925 and educated at Lawrence Sheriff School, Rugby. He obtained his degree in Botany in (1946) and his MA and MPhil (1950) from Oxford. After a further nine years conducting research at the Department of Agriculture, Oxford, and a sabbatical as Rockefeller Foundation Fellow at the University of California, Davis, he was in 1967 appointed head of Agricultural Botany at Bangor University North Wales.
He was elected a Fellow of the Royal Society in 1978 and was their Darwin Medal recipient for 1990.  He received the Millennium Botany Award in 1999 and the Marsh Ecology Award from the BES the same year. He was awarded CBE in 1989.
He has authored several textbooks on ecology and population biology.
The British Ecological Society awards the John L. Harper Young Investigator's prize annually to the best paper in Journal of Ecology by a young author. He was a member of the British Humanist Association.
Ecology text book
- 2006 - Ecology: from individuals to ecosystems (4th edition) with Michael Begon and Colin R. Townsend ISBN 1-4051-1117-8 (formerly known as Ecology: individuals, populations and communities, three editions (1986, 1990 and 1996), with Michael Begon and Colin R. Townsend ISBN 0-632-03801-2 (1996 edition))
- 2003 - Essentials of Ecology (2nd edition) with Michael Begon and Colin R. Townsend ISBN 1-4051-0328-0
- 1997 - Plant life histories : ecology, phylogeny, and evolution, Editor ISBN 0-521-57495-1
- 1977 - Population biology of plants ISBN 0-12-325850-2
Selected highly cited scientific papers
- Harper, J.L., J.T. Williams & G.R. Sagar (1965) The Behaviour of Seeds in Soil: I. The Heterogeneity of Soil surfaces and its Role in Determining the Establishment of Plants from Seed. Journal of Ecology 53 (2): 273-286. JStor
- J.L. Harper (1967) A Darwinian Approach to Plant Ecology. Journal of Ecology 55 (2): 247-270. JStor
- White, James & J.L. Harper (1970) Correlated Changes in Plant Size and Number in Plant Populations Journal of Ecology 58 (2): 467-485. JStor
- Harper, John L. & John Ogden (1970) The Reproductive Strategy of Higher Plants: I. The Concept of Strategy with Special Reference to Senecio vulgaris L. Journal of Ecology 58 (3): 681-698. JStor
- Ross, M.A. & John L. Harper (1972) Occupation of Biological Space During Seedling Establishment. Journal of Ecology 60 (1): 77-88. JStor
- "Library and Archive Catalogue". Royal Society. Retrieved 9 January 2011.
- XVI International Botanical Congress 1-7 August 1999, Saint Louis: SUMMARY REPORT
- British Ecological Society - Journal of Ecology
- the British Humanist Association. Distinguished Supporters of Humanism