| Title | Authors | Year | 
|---|---|---|
| Salt-Marsh Processes - a Review | 
                               Vernberg, F…  | 
                                                                                        1993 | 
| Sphagnum species and polluted environments, past and future | 
                               Lee, J.A.;…  | 
                                                                                        1993 | 
| Critical loads for peat soils | 
                               Cresser, M.…  | 
                                                                                        1993 | 
| Distribution and decline of endangered herbaceous heathland species in relation to the chemical composition of the soil | 
                               Houdijk, A.…  | 
                                                                                        1993 | 
| SSSIs in England at risk from acid rain | 
                               Bissett, K…  | 
                                                                                        1993 | 
| Nitrogen eutrophication and critical load for nitrogen based upon changes in flora and fauna in (semi)-natural terrestrial ecosystems | 
                               Bobbink, R…  | 
                                                                                        1993 | 
| Review of the impact of current and future acid deposition in Wales | 
                               Reynolds, B…  | 
                                                                                        1993 | 
| Effect of acid rain on pine needles as food for capercaillie in winter | 
                               Spidsx, T.K…  | 
                                                                                        1993 | 
| Atmospheric deposition of sulphur and nitrogen in heathland ecosystems. | 
                               Bobbink, R…  | 
                                                                                        1993 | 
| The effect of external stress and disturbance factors on Calluna dominated heathland vegetation. | 
                               Berdowski,…  | 
                                                                                        1993 |