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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Day, G. | 2004 | Hydrocotyle ranunculoides L. f., an invasive aquatic plant, in Cos Down (H38) and Antrim (H39) | Journal | Ir. Nat. J. | Details... |
| Delap, A.H. | 1893 | Additional localities for Irish land and freshwater Mollusca | Journal | Ir. Nat. | Details... |
| Delap, A.H. | 1909 | Freshwater crayfish | Journal | Ir. Nat. | Details... |
| Denny, P. | 1972 | Sites of nutrient absorption in aquatic macrophytes | Journal | J. Ecol. | Details... |
| Dick, J.T.A. | 1994 | A second North American freshwater amphipod in Northern Ireland, Crangonyx pseudogracilis Bousfield | Journal | Ir. Nat. J. | Details... |
| Dick, J.T.A. | 1996 | Post-invasion amphipod communities of Lough Neagh, Northern Ireland: influences of habitat selection and mutual predation | Journal | J. Anim. Ecol. | Details... |
| Dick, J.T.A., Elwood, R.W. & Irvine, D.E.G. | 1990 | Displacement of the native Irish freshwater amphipod Gammarus duebeni by the introduced Gammarus pulex | Journal | Ir. Nat. J. | Details... |
| Dick, J.T.A., Elwood, R.W. & Montgomery, W.I. | 1994 | Range expansion of the alien freshwater amphipod Gammarus pulex (L.) in the River Lagan, Co. Down | Journal | Ir. Nat. J. | Details... |
| Dick, J.T.A., MacNeil, C. & Anderson, R. | 1999 | The distribution of Crangonyx pseudogracilis Bousfield, 1958 (Crustacea: Amphipoda) in Northern Ireland, with notes on its ecology and behaviour | Journal | Ir. Nat. J. | Details... |
| Dickie, W. | 1929 | Some fish and bird notes from Fermanagh | Journal | Ir. Nat. J. | Details... |
| Donaldson, F., Donaldson, F. & McMillan, N.F. | 1979 | A note on the Mollusca of three turloughs | Journal | Ir. Nat. J. | Details... |
| Donnan, W. | 1897 | Freshwater algae | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Dorrity, C.J.B. | 1945 | Crayfish at 1,000 ft altitude | Journal | Ir. Nat. J. | Details... |
| Douglas, D.J. & McCall, G. | 1992 | The freshwater Ostracoda of Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Dowling, C., O'Connor, J.P. & O'Grady, M.F. | 1981 | A baseline survey of the Caragh, an unpolluted river in S.W.Ireland: observations on the macroinvertebrates | Journal | J. Life Sci. Roy. Dubl. Soc. | Details... |
| Downey, M. | 1991 | Groenlandia densa (L.) Fourr. in the Royal Canal, Dublin | Journal | Ir. Nat. J. | Details... |
| Doyle, A.M. & Parnell, J. | 2003 | Geometry and bladderworts: quadrifids of Irish Utricularia species | Journal | Ir. Nat. J. | Details... |
| Drennan, G.E. | 1961 | Review: 'Life in the aquarium: tropical, temperate and marine' by P. Barker | Journal | Ir. Nat. J. | Details... |
| Drennan, G.E. | 1965 | Review: 'The freshwater life of the British Isles' by J. Clegg | Journal | Ir. Nat. J. | Details... |
| Drew, D. | 1990 | The hydrology of the Burren, County Clare | Journal | Ir. Geog. | Details... |
956 references found.