| Method | Reference | Licence Required |
| General Vascular Plants | - Critchley, C.N.R. and Burke, M.J.W., 1999. Vegetation monitoring in English, Environmentally Sensitive Areas: the potential role of the Countryside, Vegetation System.
- White, J. and Doyle, G.J., 1982. Classification of Irish plant communities.
- White, J. and Doyle, G.J., 1982. The vegetation of Ireland: a catalogue raisonné. Journal of Life Sciences. 3: 289–368.
- Hodgson, J.G., Colasanti, R. and Sutton, F. Functional Interpretation of Botanical Surveys General Methods.
- Hatton-Ellis, T.W. and Grieve, N., 2003. Monitoring Ranunculion fluitantis and Callitricho-Batrachion. Vegetation Communities. Conserving Natura 2000 Rivers Monitoring Series No. 11
- Causton, D.R., 1988. Introduction to vegetation analysis.
- Edited by Palmer, M.A. and Bratton, J.H., 1995. A Sample Survey of the Flora of Britain and Ireland. The Botanical Society of the British Isles Monitoring Scheme 1987-1988.
- Holmes, N.T.H., Newman, J.R., Chadd, S., Rouen, K.J., Saint, L. and Dawson, F.H., 1999. Mean Trophic Rank: A User’s Manual. R&D Technical Report E38.
| Licences may be required for some projects involving Schedule 8 species |
| Macrophyte | | |
| Pteridophytes | - No established methodology known
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| Lichen | - Edited by Luigi Nimis,P., Scheidegger, C. and Wolseley, P.A., 2002. Monitoring with Lichens. Proceedings of the NATO Advanced Research Workshop.
- Edited by D Hill, 2006. Surveying and Report Writing for Lichenologists: Guidelines for surveyors, consultants and commissioning agencies. British Lichen Society.
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| Algae | - Kelly, M. G., Adams, C., Graves, A. C., Jamieson, J., Krokowski, J., Lycett, E. B., Murray-Bligh, J., Pritchard, S. and Wilkins, C., 2001. The Trophic Diatom Index: A User’s Manual. R&D Technical Report E2/TR2.
- Paxinos, R., 2000. A rapid Utermöhl method for estimating algal numbers. Journal of Plankton Research. 22(12): 2255-2262. Oxford University Press.
- Bollmanna, J.; Cortesb, M.Y.; Haidarc, A.T.; Brabecd, B.; Closee, A.; Hofmanna, R.; Palmaf, S.; Tupasg, L.; and Thiersteina H.R., 2002. Techniques for quantitative analyses of calcareous marine phytoplankton. Marine Micropaleontology. 44(3): 163-185. Elsevier
- Nixdorf, B., Rektins, A. and Mischke, U., 2006. Guidance standard on the enumeration of phytoplankton using inverted microscopy (Utermöhl technique) no current standard is superseded. Environmental Protection in the EU. 3: 301-314
- Thomas, N.S. Procedural Guideline No. 3–9 Quantitative sampling of sublittoral sediment biotopes and species using remote-operated grabs. www.jncc.gov.uk/PDF/MMH-Pg%203-9.pdf.
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| Fungi | - Ainsworth, A.M., 2004. Developing tools for assessing, fungal interest in habitats. 1: beech woodland saprotrophs. English Nature Research Reports.
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