Wetland Surveys Ireland 2019 ______Authors: Foss, P.J., Kirwan, B., Gallagher, M.C
Total Page:16
File Type:pdf, Size:1020Kb
County Leitrim Wetland Survey Wetland Surveys Ireland 2019 _______________________________________________________________ Authors: Foss, P.J., Kirwan, B., Gallagher, M.C. & Crushell, P. (2019) Title: County Leitrim Wetland Survey. Report prepared for Leitrim County Council. An Action of the County Leitrim Heritage Plan 2020-2025 Copyright Leitrim County Council 2019 Wetland Surveys Ireland & Foss Environmental Consulting Dr Peter Foss Dr Patrick Crushell 33 Bancroft Park Bell Height Tallaght Kenmare Dublin 24 Co Kerry [email protected] [email protected] All rights reserved. No Part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical photocopying, recording or otherwise without the prior permission of Leitrim County Council. Views contained in this report do not necessarily reflect the views of Leitrim County Council. Photographic Plate Credits All photographs by Peter Foss & Patrick Crushell 2017 unless otherwise stated. Copyright Leitrim County Council. Report cover images: Cashel Bog, Co. Leitrim (Photo: P. Foss) County Leitrim Wetland Survey Wetland Surveys Ireland 2019 ____________________________________________________________________________________ CONTENTS ACKNOWLEDGEMENTS ................................................................................................................................. 4 EXECUTIVE SUMMARY ................................................................................................................................... 5 1 INTRODUCTION ......................................................................................................................................... 7 1.1 BACKGROUND .......................................................................................................................................... 7 1.2 PROJECT AIMS ......................................................................................................................................... 7 2 INTRODUCTION TO WETLANDS ............................................................................................................. 8 2.1 DEFINITION .............................................................................................................................................. 8 2.2 IMPORTANCE OF WETLANDS ...................................................................................................................... 9 2.3 PROTECTION OF WETLANDS .................................................................................................................... 12 3 WETLANDS IN COUNTY LEITRIM .......................................................................................................... 14 3.1 COUNTY LEITRIM: AN INTRODUCTION ....................................................................................................... 14 3.1.1 Geology ......................................................................................................................................... 17 3.1.2 Sub-soils ....................................................................................................................................... 19 3.2 WETLAND HABITATS IN COUNTY LEITRIM ................................................................................................. 21 3.3 PROTECTION OF WETLANDS IN LEITRIM ................................................................................................... 40 4 LEITRIM WETLAND SURVEY 2019 ........................................................................................................ 43 4.1 INTRODUCTION ...................................................................................................................................... 43 4.2 MATERIALS & METHODS ......................................................................................................................... 43 4.2.1 Leitrim Wetland Survey 2019 - Desktop Study ............................................................................. 43 4.2.2 Study Constraints and Limitations ................................................................................................ 46 4.3 RESULTS ............................................................................................................................................... 47 4.3.1 LEWS 2019 – Desktop Study ....................................................................................................... 47 5 CONCLUSIONS & RECOMMENDATIONS ............................................................................................. 55 5.1 DISTRIBUTION AND EXTENT OF THE LEITRIM WETLAND RESOURCE ............................................................ 55 5.2 KNOWLEDGE OF THE LEITRIM WETLAND RESOURCE ................................................................................. 55 5.3 WETLAND SURVEY RECOMMENDATIONS ................................................................................................. 56 5.3.1 Further Development of Wetland Inventory .................................................................................. 56 5.3.2 Planning Control ........................................................................................................................... 56 5.3.3 Management of Leitrim Wetland Sites .......................................................................................... 57 5.3.4 Enforcement of Fines for Illegal Dumping and Infill ...................................................................... 58 5.3.5 Control of Invasive Species in Wetlands ...................................................................................... 58 5.3.6 Water Framework Directive .......................................................................................................... 58 5.3.7 Public Information and Interpretation Measures ........................................................................... 59 5.3.8 Wetland Restoration ..................................................................................................................... 60 6 BIBLIOGRAPHY & DATA SOURCES ..................................................................................................... 61 7 APPENDICES ........................................................................................................................................... 64 1 County Leitrim Wetland Survey Wetland Surveys Ireland 2019 ____________________________________________________________________________________ LIST OF FIGURES Figure 3-1: Topography and drainage map of County Leitrim......................................................................... 15 Figure 3-2: Map showing river catchments and surface water features of County Leitrim (drawn using EPA datasets) in relation to potential wetland sites. ........................................................................... 16 Figure 3-3: Simplified geological map of County Leitrim (reproduced from Gardiner 1973). .......................... 18 Figure 3-4: Sub-soil (parent material) map of County Leitrim. Source: Teagasc subsoil (or parent material) map (Meehan 2004). ................................................................................................................... 20 Figure 4-1: Flow chart illustrating the various steps undertaken during the course of the Leitrim Wetland Survey (LEWS) project 2019....................................................................................................... 44 Figure 4-2: Map showing the location and extent of wetland sites in county Leitrim, labelled according to LEWS site code. .......................................................................................................................... 50 Figure 4-3: Location of identified wetland sites (stored within Site database & GIS) in relation to areas designated for nature conservation in County Leitrim. .............................................................. 58 Figure 4-4: Map showing the extent of wetland sites identified in county Leitrim during the current study. ... 59 LIST OF TABLES Table 2-1: Examples of the economic benefits that wetlands provide (modified from Barbier et al. 1997). ... 12 Table 3-1: The sub-soil types used to identify potential wetlands in County Leitrim (from Teagasc Parent Material map (Meehan 2004)). .................................................................................................... 19 Table 3-2: Wetland habitat types (Fossitt 2000) recorded as part of the County Leitrim Wetland Survey 2019. .................................................................................................................................................... 22 Table 3-3: Number of wetland sites (main sites and sub-sites) occurring within designated areas................ 41 Table 4-1: GIS files produced during the LEWS 2019. ................................................................................... 46 Table 4-2: Natura 2000 Impacts and Activities recorded on wetland sites as part of the LEWS2019 which are likely to have a negative effect on wetlands and the wetland type most likely to be affected by these activities. ............................................................................................................................ 54 LIST OF APPENDICES Appendix 1 Reports and information sources consulted during the compilation of the Site 65 database & GIS datasets Appendix 2 Metadata for the Site database and GIS datasets (includes