The long-term goal of pollen analysis has always been the reconstruction of past vegetation mosaics. However, the pollen signal is spatially integrated, and ecologically distinct vegetation structures can produce identical pollen signals. This paper proposes an iterative approach to reconstruction, the Multiple Scenario Approach, which involves creating a large number of hypothetical landscapes using a combination of deterministic and probabilistic `rules' for plant placement coupled with environmental parameters such as topography, simulating the pollen assemblage produced by each, and comparing them statistically with a sedimentary pollen signal to identify possible reconstructions. The method expressly aims to find multiple possible reconstructions, and also gives some insight into the spatial aspects of the vegetation being reconstructed in addition to its composition.
Anderson, N.J., Bugmann, H., Dearing, J.A. and Gaillard, M.-J.2006: Linking palaeoenvironmental data and models to understand the past and to predict the future. Trends in Ecology & Evolution21, 696-704.
2.
Ball, I.R.1975: Nature and formulation of biogeographical hypotheses. Systematic Zoology24, 407-30.
3.
Birks, H.J.B.1993: Quaternary paleoecology and vegetation science - current contributions and possible future developments. Review of Palaeobotany and Palynology79, 153-77.
4.
-- 1996: Contributions of Quaternary palaeoecology to nature conservation . Journal of Vegetation Science7, 89-98.
5.
Broström, A., Sugita, S., Gaillard, M.-J. and Piljesö, P.2005: Estimating the spatial scale of pollen dispersal in the cultural landscape of southern Sweden. The Holocene15, 252-62.
6.
Bunting, M.J.2008: Pollen in wetlands: using simulations of pollen dispersal and deposition to better interpret the pollen signal. Biodiversity and Conservation17, 2079-96.
7.
Bunting, M.J. and Middleton, R.2005: Modelling pollen dispersal and deposition using HUMPOL software: simulating wind roses and irregular lakes. Review of Palaeobotany and Palynology134, 185-96.
8.
Bunting, M.J., Gaillard, M.-J., Sugita, S., Middleton, R. and Broström, A.2004: Vegetation structure and pollen source area. The Holocene14, 651-60.
9.
Bunting, M.J., Middleton, R. and Twiddle, C.L.2007: Wetland records of a coastal cultural landscape in north-west Scotland: an application of the Multiple Scenario Approach to landscape reconstruction . In Barber, B., Clark, C., Cressey, M., Crone, A., Hale, A., Henderson, J., Housley, R. , Sands, R. and Sheridan, A., editors, Archaeology from the wetlands: recent perspectives. WARP Occasional Paper 18, Society of Antiquaries of Scotland, 109-17.
10.
Bunting, M.J., Twiddle, C.L. and Middleton, R.2008: Using models of pollen dispersal and deposition in hilly landscapes: some possible approaches. Palaeogeography Palaeoclimatology Palaeoecology259, 77-91.
11.
Calcote, R.1998: Identifying forest stand types using pollen from forest hollowsThe Holocene8, 423-32.
12.
Caseldine, C. and Fyfe, R.2006: A modelling approach to locating and characterising elm decline landnam landscapes. Quaternary Science Reviews25, 632-44.
13.
Caseldine, C., Fyfe, R., Langdon, C. and Thompson, G.2007: Simulating the nature of vegetation communities at the opening of the Neolithic on Achil Island, Co. Mayo - the potential role of models of pollen dispersal and deposition. Review of Palaeobotany and Palynology144, 135-44.
14.
Davis, M.B.1963: On the theory of pollen analysis. American Journal of Science261, 897-912.
15.
Fyfe, R.2006: GIS and the application of a model of pollen deposition and dispersal: a new approach to testing landscape hypotheses using the PolLandCal models. Journal of Archaeological Science33, 483-93.
16.
Jacobson, G.L., Jr and Bradshaw, R.H.W.1981: The selection of sites for paleovegetational studies. Quaternary Research16, 80-96.
17.
Karlsson, H.2008: Vegetation changes and forest-line positions in the Swedish Scandes during late Holocene: anthropogenic impact vs. climate. Acta Universitatis agriculturae Sueciae no 2008:31.
18.
Lytle, D.E. and Wahl, E.R.2005: Palaeoenvironmental reconstructions using the modern analogue technique: the effects of sample size and decision rules. The Holocene15, 554-66.
19.
Maher, L.J., Jr2000: Modpol.exe: a tool for searching for modern analogs of Pleistocene pollen data. Inqua sub-commission on data handling methods Newsletter20 (available online at http://www.chrono.qub.ac.uk/inqua/index.htm )
20.
Middleton, R. and Bunting, M.J.2004: Mosaic v1.1: landscape scenario creation software for simulation of pollen dispersal and deposition. Review of Palaeobotany and Palynology132, 61-66.
21.
Overpeck, J.T., Webb, T., III and Prentice, I.C.1985: Quantitative interpretation of fossil pollen spectra: dissimilarity coefficients and the method of modern analogs for pollen data . Quaternary Research23, 87-108.
22.
Pratt, S.2006: Long term landscape dynamics in Caledonian pine forest . Unpublished PhD thesis, University of Edinburgh.
23.
Prentice, I.C.1985: Pollen representation, source area, and basin size - toward a unified theory of pollen analysis. Quaternary Research23, 76-86.
24.
Prentice, I.C. and Parsons, R.W.1983: Maximum-likelihood linear calibration of pollen spectra in terms of forest composition. Biometrics39, 1051-57.
25.
Sugita, S.1993: A model of pollen source area for an entire lake surface . Quaternary Research39, 239-44.
26.
-- 1994: Pollen representation of vegetation in Quaternary sediments: theory and method in patchy vegetation. Journal of Ecology82, 881-97.
27.
-- 2007a: Theory of quantitative reconstruction of vegetation I: pollen from large sites REVEALS regional vegetation composition. The Holocene17, 229-41.
28.
-- 2007b: Theory of quantitative reconstruction of vegetation II: all you need is LOVE. The Holocene17, 243-57.
29.
Sugita, S., Gaillard, M.-J. and Broström, A.1999: Landscape openness and pollen records: a simulation approach . The Holocene9, 409-21.
30.
Wahl, E.R.2004: A general framework for determining cutoff values to select pollen analogs with dissimilarity metrics in the modern analog technique. Review of Palaeobotany and Palynology128, 263-80.
