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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| O'Riordan, C.E. | 1964 | Nephrops norvegicus, the Dublin Bay Prawn, in Irish waters | Journal | Sci. Proc. R. D. S. | Details... |
| O'Riordan, R.M., Myers, A.A. & Cross, T.F. | 1991 | Chthamalus stellatus (Poli) and C. montagui Southward (Cirripedia): - variation in embryo numbers with species, habitat and shore level | Chapter | | Details... |
| O'Sullivan, G. | 1983 | The intertidal fauna of Aughinish Island, Shannon, Co. Limerick | Journal | Ir. Nat. J. | Details... |
| O'Sullivan, G. | 1987 | Lough Beltra 1986. Proceedings of the 3rd Annual Lough Beltra Workshop, Galway, 25 February 1987 | Book | | Details... |
| O'Sullivan, G. | 1987 | The 1986 research cruise programme of the R.V. Lough Beltra and trends in usage over the period 1983-1986 | Chapter | | Details... |
| Olsen, C. | 1921 | The ecology of Urtica dioica | Journal | J. Ecol. | Details... |
| Page, C.N. | 1986 | The strategies of bracken as a permanent ecological opportunist | Chapter | | Details... |
| Page, C.N. & Barker, M.A. | 1985 | Ecology and geography of hybridization in British and Irish horsetails | Journal | Proc. Roy. Soc. Edinb. | Details... |
| Palmer, C.P. | 1979 | An introduction to the Scaphopoda | Published | | Details... |
| Palmer, C.P. | 1985 | An introduction to the Cephalopoda | Published | | Details... |
| Parker, J.G. | 1984 | The distribution of the subtidal Amphipoda in Belfast Lough in relation to sediment types | Journal | Ophelia | Details... |
| Parker, R.E. | 1958 | Review: 'Quantitative plant ecology' by P. Geig-Smith | Journal | Ir. Nat. J. | Details... |
| Partridge, J.K. | 1977 | Littoral and benthic investigations on the west coast of Ireland - VI. (Section A: Faunistic and Ecological Studies). Annotated bibliographies of the genus Tapes (Bivalvia; Veneridae) | Journal | Proc. Roy. Ir. Acad. | Details... |
| Pearson, J. | 1906 | A list of the marine Copepoda of Ireland. Part II: Pelagic species | Journal | Fish. Ir., Sci. Invest. | Details... |
| Peat, H. | 2002 | Ecological Flora database | Unpublished | | Details... |
| Pilcher, J.R. | 1970 | Palaeoecology and radiocarbon dating of sites in Co. Tyrone, Northern Ireland | Ph.D. Thesis | | Details... |
| Pilcher, J.R. & Smith, A.G. | 1979 | Palaeoecological investigations at Ballynagilly, a Neolithic and Bronze age settlement in county Tyrone, Northern Ireland | Journal | Phil. Trans. Roy. Soc. Lond. | Details... |
| Preston, C.D. | 2000 | Engulfed by suburbia or destroyed by the plough: the ecology of extinction in Middlesex and Cambridgeshire | Journal | Watsonia | Details... |
| Price, E.A.C. | 1991 | Investigations into the ecology and intraclonal physiology of Glechoma hederacea | Ph.D. Thesis | | Details... |
| Priede, I.G., Raid, T. & Watson, J.J. | 1995 | Deep-water spawning of Atlantic mackerel Scomber scomber, west of Ireland | Journal | J. Mar. Biol. Assoc. UK | Details... |
507 references found.