ERAMMP Rpt-25 Annex-4B Improved Farmland V1.0 En.Pdf
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Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP) Sustainable Farming Scheme Evidence Review Technical Annex ERAMMP Report-25: Annex-4B: Building Ecosystem Resilience in Improved Farmland Keenleyside, C.B. 1, Maskell, L.C.2, Smart, S.M.2, Siriwardena, G.M.3 & Alison, J.2 1 Institute for European Environmental Policy, 2 UK Centre for Ecology & Hydrology, 3 British Trust for Ornithology Client Ref: Welsh Government / Contract C210/2016/2017 Version 1.0 Date 10/07/2020 Version History Version Updated By Date Changes 1.0 Author team 10/7/2020 Published Mae’r adroddiad hwn ar gael yn electronig yma / This report is available electronically at: www.erammp.wales/25 Neu trwy sganio’r cod QR a ddangosir / Or by scanning the QR code shown. Mae’r ddogfen yma hefyd ar gael yn Gymraeg / This document is also available in Welsh Series Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP) Sustainable Farming Scheme Evidence Review Title ERAMMP Report-25 Annex-4B: Building Ecosystem Resilience in Improved Farmland Client Welsh Government Client reference C210/2016/2017 Confidentiality, © Crown Copyright 2020. copyright and This report is licensed under the Open Government Licence 3.0. reproduction DRAFT UKCEH contact Bronwen Williams details UK Centre for Ecology & Hydrology (UKCEH) Environment Centre Wales, Deiniol Road, Bangor, Gwynedd, LL57 2UW [email protected] Corresponding Author Clunie Keenleyside, IEEP [email protected] Authors Clunie Keenleyside 1, Gavin Siriwardena 2, Lindsay Maskell 3, Jamie Alison3, Simon Smart 3 1 IEEP, 2 BTO, 3 UKCEH Contributing Authors Lisa Norton1, Amanda Thomson1, Prysor Williams4, Tom Jenkins5, Dave and Reviewers Chadwick4, Liz Lewis-Reddy6, Amy Thomas1, Ian Dickie 3 1 UKCEH, 2 BTO, 3 eftec, 4 Bangor University, 5 Forest Research, 6 ADAS How to cite (long) Keenleyside, C.B., Maskell, L.C., Smart, S.M., Siriwardena, G.M. & Alison, J. (2020). Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP): Report-25: SFS Evidence Review Annex-4B - Building Ecosystem Resilience in Improved Farmland. Report to Welsh Government (Contract C210/2016/2017)(UK Centre for Ecology & Hydrology Project 06297) How to cite (short) Keenleyside, C.B. et al. (2020). ERAMMP Report-25: Annex-4B Improved Land. Report to Welsh Government (Contract C210/2016/2017)(UKCEH 06297) Approved by Simon Bilsborough James Skates Abbreviations Used in this Report BBS [BTO/JNCC/RSPB] Breeding Bird Survey BGS British Geological Survey BTO British Trust for Ornithology CAP Common Agricultural Policy EAS Environmentally Sensitive Areas eftec Economics for the Environment Consultancy ERAMMP Environment and Rural Affairs Monitoring & Modelling Programme GHG Greenhouse Gas GMEP Glastir Modelling and Evaluation Programme HLS Higher-Level Stewardship IEEP Institute for European Environmental Policy N Nitrogen N2O Nitrous oxide PPP Plant Protection Products SFS Sustainable Farm Scheme UKCEH UK Centre for Ecology & Hydrology WBSM Wild bird seed mix Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP) Sustainable Farming Scheme Evidence Review Contents 1 Introduction ....................................................................................................................... 2 1.1 Review brief ............................................................................................................... 2 1.2 Interpretation of the review brief ................................................................................ 2 1.2.1 Improved land in Wales ................................................................................................... 2 1.2.2 Ecological resilience ........................................................................................................ 3 1.2.3 Habitat Condition ............................................................................................................. 4 1.2.4 Linking evidence to farm types ........................................................................................ 4 1.2.5 Uncertainty ....................................................................................................................... 4 2 Outcomes ......................................................................................................................... 7 3 Policy Relevance and Policy Outcomes ........................................................................... 9 4 Introductions to the interventions reviewed .................................................................... 10 4.1 Evidence of farming trends, the implications ........................................................... 10 4.2 Intervention categories ............................................................................................. 11 4.3 Evidence to be explored .......................................................................................... 12 5 Interventions ................................................................................................................... 14 5.1 In-field management of the whole crop/grassland ................................................... 14 5.1.1 Grassland in-field management ..................................................................................... 14 5.1.2 Arable land in-field management ................................................................................... 19 5.2 Organic farming ....................................................................................................... 26 5.3 Modified management of strips/plots around or within the field ............................... 29 5.4 Management of agriculturally unproductive land and features ................................ 35 5.4.1 Management of farm ponds ........................................................................................... 36 5.4.2 Management of hedges and wooded linear features .................................................... 36 5.4.3 Management of farmland trees and woodland .............................................................. 37 5.4.4 Management of small areas of semi-natural habitats and features .............................. 37 5.5 Other interventions ................................................................................................... 39 5.6 Cross-cutting issues for all interventions ................................................................. 40 5.6.1 Myth busting .................................................................................................................. 40 5.6.2 Timescale and longevity of impact ................................................................................ 41 5.6.3 Magnitude of impact ...................................................................................................... 42 5.6.4 Spatial context and connectivity dependence ............................................................... 43 5.6.5 Metrics and verification .................................................................................................. 43 5.6.6 Co-benefits and trade-offs ............................................................................................. 43 6 Significance of context, synergy and scale of biodiversity interventions ........................ 47 6.1 Effect of context on the potential benefits of interventions ....................................... 47 6.2 Synergy of interventions on improved land .............................................................. 47 6.3 Landscape-scale planning of SFS management interventions ................................ 49 7 Evidence Gaps ............................................................................................................... 52 8 Summary ........................................................................................................................ 54 8.1 Improved grassland management (infield and field margins) .................................. 55 8.2 Arable management (infield and field margins) ....................................................... 55 8.3 Organic farming ....................................................................................................... 56 8.4 Management of non- agricultural land and features ................................................ 56 8.5 Significance of context, synergy and scale of biodiversity interventions .................. 56 8.6 Synthesis of findings ................................................................................................ 57 9 References ..................................................................................................................... 61 ERAMMP Report-25/Annex-4B: Improved Land v1.0 Page 1 of 81 Environment and Rural Affairs Monitoring & Modelling Programme (ERAMMP) Sustainable Farming Scheme Evidence Review 1 Introduction 1.1 Review brief This section of the evidence review complements ERAMMP Report 4: SFS Evidence Review Annex 4 Building Ecosystem Resilience, which had the remit to focus on management interventions that will deliver broadscale improvements in the biodiversity related features of semi-natural farmland and woodland habitat types - but specifically excluded improved farmland1. The Welsh Government now requires ERAMMP to undertake an evidence review based on the same brief as the earlier review, but this time to focus solely on improved land. The requirement is to identify interventions and review the evidence for their effectiveness in building ecosystem resilience, which in this context