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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| O'Grady, M.F. & King, J.J. | 1992 | Ecological changes over 30 years caused by drainage of a salmonid stream, the Bunree River | Journal | Ir. Fish. Invest. | Details... |
| O'Reilly, H. | 1955 | Survey of the Gearagh, an area of wet woodland on the river Lee, near Macroom, Co. Cork | Journal | Ir. Nat. J. | Details... |
| O'Sullivan, W.M. | 1991 | The distribution of otters Lutra lutra within a major Irish river system, the Munster Blackwater catchment, 1988-90 | Journal | Ir. Nat. J. | Details... |
| O'Sullivan, W.M. | 1994 | Summer diet of otters on part of the river Blackwater catchment | Journal | Ir. Nat. J. | Details... |
| Pack-Beresford, D.R. | 1923 | Algal discolouration of Lough Neagh and the River Bann | Journal | Ir. Nat. | Details... |
| Pack-Beresford, D.R. | 1937 | Algal discolouration of Lough Neagh and the River Bann | Journal | Ir. Nat. J. | Details... |
| Pack-Beresford, D.R. | 1938 | Algal discolouration of Lough Neagh and the River Bann | Journal | Ir. Nat. J. | Details... |
| Pieroni, A. | 1999 | Gathered wild food plants in the Upper valley of the Serchio River (Garfagnana), Central Italy | Journal | Econ. Bot. | Details... |
| Powell, B.L. & McClenaghan, C.M. | 1961 | Pasiphae sivado (Risso) in the river Liffey | Journal | Ir. Nat. J. | Details... |
| Preston, S.J., Muise, E., Portig, A. & Montgomery, I. | 2001 | An investigation of the factors affecting the occurrence and abundance of Ranunculus penicillatus in selected rivers in N. Ireland. EHS Research & Development Series No.01/1 | Report | | Details... |
| Roche, G. | 1956 | Ray's bream, Brama raii Bloch, from the mouth of the river Moy | Journal | Ir. Nat. J. | Details... |
| Rosell, R. | 2002 | Occurrence of river lamprey Lampetra fluviatilis (L.) from the River Lagan, Belfast, following construction of Denil salmon passes in weirs | Journal | Ir. Nat. J. | Details... |
| Scannell, M.J.P. | 1972 | Bangia atropurpurea (Roth.) Ag. in Lough Derg, River Shannon | Journal | Ir. Nat. J. | Details... |
| Schroder, P. | 1988 | Distribution patterns of blackfly (Diptera: Simuliidae) associations in two Irish river systems | Journal | Hydrobiologia | Details... |
| Skillen, J. | 1932 | Antiquities found during course of the River Bann drainage scheme | Journal | Ir. Nat. J. | Details... |
| Sleeman, D.P. & Smiddy, P. | 1999 | Bats mist-netted on rivers in Co. Cork | Journal | Ir. Nat. J. | Details... |
| Smiddy, P. | 1998 | Grey seal in a freshwater river | Journal | Ir. Nat. J. | Details... |
| Smith, S.J. | 1989 | Irish Rivers: Biology and Management, R I A , Dublin, 23-24 February 1989 | Journal | Ir. Nat. J. | Details... |
| Sollas, W.J. | 1894 | Notes on glacial deposits in Ireland. 1. The Bray river | Journal | Ir. Nat. | Details... |
| Sollas, W.J. | 1894 | Notes on glacial deposits in Ireland.1. The Bray river | Journal | Ir. Nat. | Details... |
122 references found.