Skip to main content

PDF


Title: Paleolimnological Approaches to the WFD
Author: Edinburgh Sniffer:
Author: SNIFFER
Document Type: Monograph
Annotation: Environment Agency Project ID:EAPRJOUT_1337, Representation ID: 443, Object ID: 2513
Abstract:
AND RECOMMENDATIONS 111 6.1 Overview of project findings 6.2 Recommended protocol 111 113 REFERENCES 116 APPENDICES Appendix 1 List of all sites included in the project with the waterbody ID (WBID) and GB Lake Typology (N=224) 122 Appendix 2 List of the common diatom taxa in the samples analysed in the project with diatcode, full name and authority 127 Appendix 3 The TWINSPAN site end-groups of the 219 sites analysed in work package 1 (sites are ordered by TWINSPAN end-group) 134 Appendix 4 Squared chord distance dissimilarity scores between the 219 core tops and reference samples analysed in work package 1 138 Appendix 5 Profiles of % dry weight (%DW) and % loss on ignition (%LOI) for the 34 cores taken in work package 2 142 Appendix 6 Diatom transfer function results for lakes in work package 2 146 7 List of Figures Page Figure 2.1 Map showing the location and typology of lakes included in the project 14 Figure 2.2 TWINSPAN classification of the diatom reference samples into eight site end-groups 18 Figure 2.3 PCA biplot (axis 1 and 2) of the diatom reference samples with the eight TWINSPAN site end-groups shown as polygons 21 Figure 2.4 PCA biplot (axis 1 and 2) of the diatom reference samples, classified according to the GB Lake Typology 21 Figure 2.5 Histograms of the squared chord distance dissimilarity scores for each lake type 24 Figure 2.6 Boxplot of the squared chord distance dissimilarity scores for the range of GB lake types 30 Figure 3.1 Summary diagram of diatom changes (% relative abundance) in cores from the Low Alkalinity, Deep and Shallow lake types 35 Figure 3.2 Summary diagram of diatom changes (% relative abundance) in cores from the Medium Alkalinity, Deep lake types 36 Figure 3.3 Summary diagram of diatom changes (% relative abundance) in cores from the Medium Alkalinity, Shallow lake types 37 Figure 3.4 Summary diagram of diatom changes (% relative abundance) in cores from the High Alkalinity, Deep and Shallow lake types 38 Figure 3.5 Summary diagram of diatom changes (% relative abundance) in cores from the Marl, Deep and Shallow lake types 39 Figure 3.6 Histograms of the squared chord distance dissimilarity scores between the bottom sample and each of the upper samples in the 31 cores 46 Figure 3.7 DCA biplots (axis 1 and 2) of the sample scores and species scores for the 31 lakes in work package 2 50 Figure 3.8 Diatom inferred pH (DI-pH) (for Low alkalinity lakes only) and total phosphorus (DI-TP AMicro l-1) for the lakes in work package 2 55 Figure 4.1 Dry weight and organic matter profiles for the Lake of Menteith cores 66 Figure 4.2 Spheroidal carbonaceous particle concentration profiles for Lake of Menteith cores 67 Figure 4.3 Summary diagram of the diatom assemblages in Lake of Menteith 70 Figure 4.4 Summary diagram of Chironomidae in Lake of Menteith 70 Figure 4.5 Summary diagram of Cladocera chitinous remains in Lake of Menteith 71 Figure 4.6 Summary diagram of plant macrofossils in Lake of Menteith 71 Figure 4.7 Summary diagram of zooplankton ephippia in Lake of Menteith 72 8 Figure 4.8 Summary diagram of terrestrial pollen in Lake of Menteith 73 Figure 4.9 Summary diagram of aquatic pollen in Lake of Menteith 73 Figure 4.10 Dry weight and organic matter profiles for the Llangorse Lake cores 74 Figure 4.11 Spheroidal carbonaceous particle concentration profiles for Llangorse Lake cores 75 Figure 4.12 Summary diagram of the diatom assemblages in Llangorse Lake 79 Figure 4.13 Summary diagram of Chironomidae in Llangorse Lake 79 Figure 4.14 Summary diagram of Cladocera chitinous remains in Llangorse Lake 80 Figure 4.15 Summary diagram of plant macrofossils in Llangorse Lake 80 Figure 4.16 Summary diagram of zooplankton ephippia in Llangorse Lake 81 Figure 4.17 Summary diagram of terrestrial pollen in Llangorse Lake 82 Figure 4.18 Summary diagram of aquatic pollen in Llangorse Lake 82 Figure 5.1 Summary plot of the common diatom taxa in the analogue matching training set 96 Figure 5.2 Summary plot of the common cladocera taxa in the analogue matching training set 97 Figure 5.3 Summary plot of the common diatom taxa in the reference samples of the three test lakes 98 Figure 5.4 Summary plot of the cladocera taxa in the reference samples of the three test lakes 98 Figure 5.5 Histograms of the squared chord distance dissimilarity scores between samples in the analogue matching training set and the Loch Davan reference sample 102 Figure 5.6 Histograms of the squared chord distance dissimilarity scores between samples in the analogue matching training set and the Felbrigg Lake reference sample 105 Figure 5.7 Histograms of the squared chord distance dissimilarity scores between samples in the analogue matching training set and the Groby Pool reference sample 108 9 List of Tables Page Table 2.1 The Lake Typology for Great Britain indicating the number of lakes of each type in the diatom dataset (N=219) 13 Table 2.2 Summary of the diatom reference sample TWINSPAN end-groups and associated lake types 19 Table 3.1 List of 34 lakes sampled as part of Work Package 2 33 Table 4.1 Rarefaction and Chao taxon richness scores for the Lake of Menteith samples 68 Table 4.2 Rarefaction and Chao taxon richness scores for the Llangorse Lake samples 76 Table 5.1 List of lakes in the analogue matching training set 95 Table 5.2 Squared chord distance dissimilarity scores between the samples in the analogue matching training set and the reference sample from Loch Davan 99 Table 5.3 Squared chord distance dissimilarity scores between the samples in the analogue matching training set and the reference sample from Felbrigg Lake 100 Table 5.4 Squared chord distance dissimilarity scores between the samples in the analogue matching training set and the reference sample from Groby Pool 101 10 1.
Publisher: Environment Agency
Subject Keywords: Diatom; Water framework directive; Lakes; Wfd; Chironomids; Water quality management; Diatom reference conditions; Physical ecotypes; Diatom data; Multi-proxy palaeo-record; Paleolimnological; Paleolimn; Reference condition
Extent: 151
Permalink: http://www.environmentdata.org/archive/ealit:4754
Total file downloads: 0

Download PDF    Display PDF in separate tab