Breen, J. (1977) The distribution of Formica lugubris Zetterstedt (Hymenoptera, Formicidae) in Ireland, with a discussion of its possible introduction. Irish Naturalists' Journal 19, 123-127.

Breen, J. (1977) A note on the species of Microdon (Diptera, Syrphidae) in Ireland. Entomologist's Gazette 28, 243-244.

Breen, J. (1977) Internest battles of Formica lugubris Zetterstedt (Hymenoptera, Formicidae) in Ireland. Entomologist's Record 89, 296-298.

Breen, J. (1979) Flights of the wood ant Formica lugubris (Hym., Formicidae) in Ireland. Entomologist's Record 91, 10-12.

Breen, J. (1979) Worker populations of Formica lugubris Zett. in Irish plantation woods. Ecological Entomology 4, 1-7.

Breen, J. (1979) Aphids visited by Formica lugubris (Hymenoptera, Formicidae) including eleven species new to Ireland. Irish Naturalists' Journal 19, 349-352.

Breen, J. (1979) Nest sites of Formica lugubris (Hymenoptera, Formicidae) in Irish plantation woods. Journal of Life Sciences, Royal Dublin Society 1, 13-32.

Moles, R. and J. Breen (1991) Surveillance of recent vegetation change in the Burren, County Clare, Republic of Ireland. Global Ecology and Biogeography Letters 1, 151-156 (1991).

*Moles, R.T. and J. Breen (1995) Long-term changes within lowland farmland bird communities in relation to field boundary attributes. Biology and Environment: Proceedings of the Royal Irish Academy, 95B(3), 203-215.

*Coffey, M.F. and J. Breen (1997) Seasonal variation in pollen and nectar sources of honey bees in Ireland. Journal of Apicultural Research 36(2), 63-76.

*O’Leary, C. and J. Breen (1997) Metal levels in seven species of mollusc and in seaweeds from the Shannon Estuary. Biology and Environment: Proceedings of the Royal Irish Academy, 97B(2), 121-132.

O'Leary, C. and J Breen (1998) Heavy metals in Mytilus edulis, Fucus vesiculosus and sediment from the Shannon Estuary. Submitted to Biology and Environment: Proceedings of the Royal Irish Academy 98B(3): 153-169

Steinbörn, M. and J. Breen (1999) Heavy metals in soil and vegetation at Shallee Mine, Silvermines, Co. Tipperary. Biology and Environment: Proceedings of the Royal Irish Academy 99B(1): 37-42.

Book

Breen, J. and G. Mullen (1992) Agricultural Science. 400 pp. Dublin. Folens.

Book chapters, booklets

Breen, J. (1979) Irish bees, wasps, ants. Irish Environmental Library Series. pp.32 Dublin. Folens.

Breen, J. and M. O'Meara (1979) Butterflies. In, F. O'Gorman (ed.). The Irish Wildlife Book. pp. 80-83. Dublin. J.Coughlan and The Irish Wildlife Federation.

Breen, J. (1979) Our wild bees, wasps and ants. In, F. O'Gorman (ed.). The Irish Wildlife Book. pp. 138-143. Dublin.. J. Coughlan and The Irish Wildlife Federation.

Breen, J and T. Harrington (1982) Field Studies Guide to Cappanalea Outdoor Education Centre. pp.34 County Kerry Vocational Education Committee.

Breen, J. (1983) Ants, Bees and Wasps: order Hymenoptera, Sub-order Aculeata. In, J. Feehan, Laois: an environmental survey. pp. 180-183, 217-219 and 507-508. Stradbally, Co. Laois. Ballykilcavan Press.

Breen, J. and A. O’Brien (1995) Species richness in oldfield limestone grassland. In, D.W. Jeffrey, M.B. Jones and J.H. McAdam (eds.) Irish grasslands: their biology and management. pp 210-218. Dublin. Royal Irish Academy. (Refereed)

Breen, J. and R. Moles (eds.) (1997) 7th Annual Environmental Researchers’ Colloquium. Abstracts. 84 pp. Limerick. University of Limerick.

Breen, J. et al. (1998) In, D.W. Jeffrey (ed.) A teachers’ guide to grassland ecology. 27 pp. Dublin. Royal Irish Academy. (Refereed)

Papers at international congresses & workshops

Breen, J. (1977) Patterns of distribution of Formica lugubris Zett. nests in Irish plantation woods. pp. 156-157 in Proceedings of the 8th International Congress International Union for the Study of Social Insects. Wageningen, The Netherlands.

Breen, J. (1978) Diurnal and seasonal foraging of Formica lugubris Zetterstedt (Hymenoptera, Formicidae) in Irish plantation woods. First European Congress of Entomology, Commonwealth Agricultural Bureau Abstracts p. 13. Reading, U.K.

Breen, J. (1982) The foraging dynamics of the wood ant Formica lugubris in Ireland. Proceedings of the IX International Congress International Union for the Study of Social Insects. Boulder, Colorado.

Breen, J. and A. O’Brien (1990) Tetramorium caespitum in an Irish dune: spatial distribution and ordination of sites. In, G.K. Veeresh, B. Mallik, and C.A. Viraktamath (eds.) Social Insects and the Environment. Proceedings 11th International Congress International Union for the Study of Social Insects. pp. 219-220. Bangalore, India. (Refereed)

Breen, J. and A. O’Brien (1990) Myrmecochory by Tetramorium caespitum in Ireland. In, G.K. Veeresh, B. Mallik, and C.A. Viraktamath (eds.) Social Insects and the Environment. Proceedings 11th International Congress International Union for the Study of Social Insects. p. 91. Bangalore, India. (Refereed)

Breen, J. (1992) Research on ants in Ireland. Workshop of English Speaking Section of the International Union for the Study of Social Insects. Mols Laboratory, University of Ċrhus, Denmark, August,1992.

Breen, J. and A. O’Brien (1994) Ecology of Lasius flavus mounds in limestone grassland in Ireland: spatial distribution, soil modification and nest vegetation. In, A. Lenoir et al. (eds.) Les insectes sociaux: 12th Congress of the International Union for the Study of Social Insects, p. 386. Paris. University of Sorbonne. (Refereed)

Breen, J. and M. Steinbörn (1998) Uses of bio-indicators of heavy metals in the environment: species, sampling, treatment and analysis protocols. Workshop “Health risk of heavy metals in the food chain of industrial areas in Central and Eastern Europe - evaluation of the current status”. Rauischholzhausen, University of Giessen, Germany, 28-31 July 1998. (7 pages submitted as part of the Workshop Report for INCO-Copernicus project PL-97-3193.)

Reports

Coffey, Mary Frances and John Breen 1999. Analysis of Irish honey at point-of-sale. A report on research on Irish honey under EU Commission Regulation (EC) No 1221 / 97, carried out for the Department of Agriculture and Food, Dublin. pp. 40

Breen, J. 1999. Analysis of statistical data. pp. 35 – 45, In: “Evaluation of the Moyross Intervention Education Pilot Project”.pp 45. Limerick: Curriculum Development Unit, Mary Immaculate College.

Invited Lectures and Papers

Breen, J. and M. Steinbörn 1998. Uses of bio-indicators of heavy metals in the environment: species, sampling, treatment and analysis protocols. Workshop “Health risk of heavy metals in the food chain of industrial areas in Central and Eastern Europe - evaluation of the current status”. Rauischholzhausen, University of Giessen, Germany, 28-31 July.

Willeke-Wetstein, C., J. Steinbach, E. Lücker, J.R. Bacon and J. Breen 1998. Cadmium and lead in the food chain of industrial point sources in Eastern Europe - an interdisciplinary project approach. Proc. of the 18th International Workshop "The biological importance of minerals and trace elements" (Die biologische Bedeutung der Mengen- und Spurenelemente) Jena, Germany Dec. 4-5.

Other Publications

Breen, J. (1982) Insects - identification and public health significance. pp. 1-11 in Proceedings Health Inspector's Association Eighth Summer School, Newmarket-on-Fergus.

Breen, J. and A. O’Brien (1989) Ecology of the ant Tetramorium caespitum in an Irish coastal sand dune. In, Proceedings Annual Winter Meeting of the British Ecological Society, University of Wales, Swansea.

O’Brien, A. and J. Breen (1992) Comparison of soil variables from a modified environment: ant nests. Second Irish Environmental Researchers’ Colloquium, Trinity College Dublin.

Lernihan, A. and J. Breen (1992) Vegetation communities in relation to soil characteristics on abandoned copper mines in Killarney National Park: preliminary observations. Second Irish Environmental Researchers’ Colloquium, Trinity College Dublin.

J. Breen and Lernihan, A. (1992) Vegetation and soil characteristics on abandoned copper mines. Elements issue 1, University of Limerick. Also available at: URL: http://www.ul.ie/~childsp/Elements/

O’Leary, C. and J. Breen (1994) Heavy metals in Mytilus edulis from the Shannon estuary. In, Proceedings Fourth Environmental Researchers’ Colloquium, pp. 12-13. University College Galway.

O’Leary, C. and J. Breen (1994) Heavy metals in seven species of mollusc from the Shannon Estuary. In, Proceedings Fourth Environmental Researchers’ Colloquium, p. 49. University College Galway.

Breen, J. and A. O’Brien (1994) Lasius flavus ant hill vegetation in Ireland. In, Proceedings of Winter and Annual General Meeting of the British Ecological Society, pp. 22-23. University of Birmingham.

Coffey, M.F. and J. Breen (1994) The floral sources of Irish honeys using melissopalynology. In, Proceedings of Winter and Annual General Meeting of the British Ecological Society, pp. 73. University of Birmingham.

O’Leary, C. and J. Breen (1994) Heavy metals in molluscs from the Shannon Estuary, Ireland. In, Proceedings of Winter and Annual General Meeting of the British Ecological Society, pp. 13. University of Birmingham.

O’Leary, C. and J. Breen (1995) Heavy metal variations in the organs of Mytilus edulis from the Shannon Estuary. In, Proceedings Fifth Environmental Researchers’ Colloquium, p. 106. Cork. University College Cork.

O’Leary, C. and J. Breen (1995) Monthly variations of heavy metals in Mytilus edulis from the Shannon Estuary. In, Proceedings Fifth Environmental Researchers’ Colloquium, p. 106. Cork. University College Cork.

Moles, R. and J. Breen (1996) Lowland farmland bird communities in relation to field boundary habitats. In, Proceedings Sixth Environmental Researchers’ Colloquium, Dublin. University College, Dublin.

Steinbörn, M. and J. Breen (1997) Phytoremediation potential of plant species from the Silvermines area, Co. Tipperary. In, 7th Annual Environmental Researchers’ Colloquium. Abstracts. p. 9. Limerick. University of Limerick.

Steinbörn, M. and J. Breen (1997) Exclusive mechanisms versus tolerant mechanisms - how plants survive in metal contaminated soil. In, 7th Annual Environmental Researchers’ Colloquium. Abstracts. p. 50. Limerick. University of Limerick.

O’Leary, C. and J. Breen (1997) Heavy metal loads in biota from the Shannon estuary. In, 7th Annual Environmental Researchers’ Colloquium. Abstracts. p. 53. Limerick. University of Limerick.

Forrest, N., J. Breen and M. Redington (1997) Shells of dog whelks (Nucella lapillus) from two shores with different levels of TBT contamination. In, 7th Annual Environmental Researchers’ Colloquium. Abstracts. p. 72. Limerick. University of Limerick.

Cahill, T., J. Breen and M. F. Coffey (1997) Sodium, magnesium, iron and lead levels in Irish honey, including an urban / rural comparison. In, 7th Annual Environmental Researchers’ Colloquium. Abstracts. p. 78. Limerick. University of Limerick.

J. Breen (1997) Looking at ants. The Badger (Newsletter of the Irish Wildlife Trust), No. 65, p. 10.

Leonard, C., G. J. Mullen, J. Breen & N. Culleton 1998. Could soil biology indicate fertility in low-input grassland? Abstract. Irish Journal of Agriculture and Food Research (in press).

Leonard, C., G. Mullen, J. Breen and N. Culleton, 1998. Correlation between soil factors and productivity in grassland under organic management. In: J. Bartlett (ed.) 8th Irish Environmental Researchers Colloquium: Book of abstracts. p. 34. Sligo. Regional Technical College.

Steinbörn, M. and J. Breen, 1998. The implication of pseudo-total and mobilisable analysis of metals in soil for risk assessment and risk management. in: J. Bartlett (ed.) 8th Irish Environmental Researchers Colloquium: Book of abstracts. p. 43. Sligo Regional Technical College.

McCarthy, J. and J. Breen 2000. Metal levels in freshwater biota in the vicinity of Shallee Mine, Silvermines, County Tipperary. In: 10^th Irish Environmental Researchers’ Colloquium p. 56, University of Ulster, Jordanstown.

Steinbörn, M. and J. Breen 2000. Lead, zinc and copper levels of soil and vegetation at Shallee Mine, Silvermines, County Tipperary. In: 10^th Irish Environmental Researchers’ Colloquium p. 57, University of Ulster, Jordanstown.

Breen, J. and T. Murray 2001. Sites with mound nests of the ant Lasius flavus are biodiverse and should be considered for protection. In: 11^th Irish Environmental Researchers’ Colloquium, Environ2001. p. 83. Dublin City University, Dublin.

P. Byrne and J. Breen 2001. The Irish red grouse at Athea, County Limerick: Current status and quality of habitat. In: 11^th Irish Environmental Researchers’ Colloquium, Environ2001. p. 83. Dublin City University, Dublin.

McCarthy, J. and J. Breen 2001. The aquatic moss Fontinalis antipyretica (Bryophyta) as a biomonitor for lead in the vicinity of an abandoned mine at Shallee, Co. Tipperary. In: 11^th Irish Environmental Researchers’ Colloquium, Environ2001. p. 84. Dublin City University, Dublin.

Ní Chátháin, B., T. Harrington and J. Breen 2001. Freshwater benthic algae as water quality indicators in the river Deel, Co. Limerick. In: 11^th Irish Environmental Researchers’ Colloquium, Environ2001. p. 86. Dublin City University, Dublin.

Reviews

Breen, J. (1979) Review of Life on Earth by D. Attenborough (Collins/BBC, 1979). Hibernia 14 March 1979.

Breen, J. (1993) Software Review of Multivariate Statistical Package (version 2.0) by W. Kovach. Journal of Biological Education 27(1), 74.

Breen, J. (1997) Review of Insects and thistles by Margaret Redfern (Slough, Richmond Publishing). Irish Naturalists’ Journal 25(10), 39.

Breen, J. (1997) Review of Solitary Wasps by Peter F. Yeo and Sarah A. Corbet (Slough, Richmond Publishing). Irish Naturalists’ Journal 25(11/12), 467.

Other media

Breen, J. (1979) Basic concepts in Ecology Filmstrip and teacher’s notes. Dublin. Amach Faoin Aeir Teo.

Breen, J. (1980) Scientific Advisor for and co-presenter (with É. de Buitléar) of a 30 minute programme Social Insects, Radio Telefís Éireann.

(1998) Web pages for the University of Limerick  Department of Life Sciences.

Seminars and Invited Lectures

Invited by the Department of Education Dublin to participate in the preparatory weekend and provided materials for the Department of Education InService Course for Teachers of the new Junior Certificate Science syllabus (1989).

Nominated by Department of Education, Dublin to attend EC sponsored Workshop on Environmental Education in Munich under ARION 1989/90, October 1989.

Invited to present a submission on Environmental Education to the Environmental Awareness Committee, Department of Education, Dublin, 18 January 1990. pp. 1-6.

Invited by Department of Education, Northern Ireland to participate in Environmental Education Seminar, Ballycastle, Co. Down. September 1992.

“Darwinism Evolving”, lecture to Limerick Philosophical Society, Mary Immaculate College, February 1997. (Version currently in preparation for the Society’s web page at http://www.ul.ie/~philos/pubs2.html)

Frequently invited lecturer to University Biological and Zoological Societies (e.g. U.C.C., U.C.G., T.C.D., St Patrick's College, Maynooth, N.U.U.), branches of Irish Wildlife Federation (including guided walks for members of the public e.g. in the Burren, Lough Gur and Curraghchase), and branches of the Irish Beekeeper's Association.