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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Hodge, P.J. | 1990 | A survey of the Coleoptera, Diptera and Hemiptera - Heteroptera of the Arun Levels between Arundel and Pulborough | Report | | Details... |
| Kitching, J.A., Larkum, A.W.D., Norton, T.A., Partridge, J.C. & Shand, J. | 1990 | The ecology of Lough ine. XXV. An ecological study of the Whirlpool Cliff, Lough Hyne (Ine) | Journal | Prog. Underwater Sci. | Details... |
| Kyne, M.J., Kyne, M.J. & Fairley, J.S. | 1990 | A summer survey of otter sign on Roundstone Bog, south Connemara | Journal | Ir. Nat. J. | Details... |
| Light, J.M. & Baxter, J.M. | 1990 | Leptochiton scabridus (Jeffreys, 1880) - a live record from Co. Donegal, Ireland | Journal | J. Conch. (Lond.) | Details... |
| Majerus, M.E.N. | 1990 | Cambridge ladybird survey - interim report on the survey 1984-1989 | Report | | Details... |
| Milne-Redhead, E. | 1990 | The B.S.B.I. Black Poplar survey, 1973-88 | Journal | Watsonia | Details... |
| National Trust | 1990 | Plant list for Crom Estate made in c.1990 and using DOE lists as well as National Trust survey | Unpublished | | Details... |
| Nunn, J.D. | 1990 | The marine Mollusca of Ireland: Donegal, June 1989 | Journal | Conch. Newsletter | Details... |
| Picton, B.E. | 1990 | The sublittoral communities of Rathlin Island, Northern Ireland | Journal | PMNHS Newsletter | Details... |
| Rippey, I. | 1990 | Brackagh Bog N.N.R. habitat and invertebrate survey. Unpublished report to EHS | Report | | Details... |
| Sterling, D.H. | 1990 | The Leckford Survey. Lepidoptera. Leckford record No.4 (rewritten December 1989) | Report | | Details... |
| Toal, L. | 1990 | Merlin survey data for Northern Ireland | Unpublished | | Details... |
| Bond, K.G.M. | 1991 | A preliminary survey of the Lepidoptera of Pollardstown Fen, Co. Kildare, including a record of Cosmopterix lienigiella (Lienig and Zeller, 1839) (Cosmopterigidae), a species new to Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Clarke, A. | 1991 | A new survey of Clare Island | Journal | Ir. Nat. J. | Details... |
| Fuller, I.A., Telfer, T.C., Moore, C.G. & Wilkinson, M. | 1991 | The use of multivariate analytical techniques in conservation assessment of rocky seashores | Journal | Aquatic Cons.: Marine and Freshwater Ecosystems | Details... |
| Good, J.A. & Speight, M.C.D. | 1991 | Sites of international and national importance for invertebrate fauna - a definition proposed for use in site surveys | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Kirby, P. | 1991 | Ramsey Marsh, Essex. Survey of aquatic and marginal invertebrates 2 November 1991. Copy in ISR files, Peterborough | Report | | Details... |
| Martin, W.L. | 1991 | Survey of hay meadows in the area of West Corrib, Co. Galway | Journal | Ir. Nat. J. | Details... |
| McGrath, D. & King, P.A. | 1991 | Settlement of mussels, Mytilus edulis L., on wave-exposed shores in Irish waters: a survey | Journal | Proc. Roy. Ir. Acad. | Details... |
| Toal, L. | 1991 | Merlin survey data for Northern Ireland | Unpublished | | Details... |
595 references found.