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Interreg Estonia-Latvia project No. Est-Lat62 “Joint management of groundwater dependent ecosystems in transboundary Gauja-Koiva river basin (GroundEco)” FINAL REPORT 2020 GroundEco “Joint management of groundwater dependent ecosystems in transboundary Gauja -Koiva river basin” Table of Contents ABBREVIATIONS 4 INTRODUCTION 5 1. Description of GroundEco project 6 2. Background for identification and assessment of groundwater dependent terrestrial ecosystems (GDTEs) according to the Water Framework Directive (WFD) 8 2.1. Role of groundwater dependent terrestrial ecosystems in the Water Framework Directive 8 2.2. How to determine whether a terrestrial ecosystem directly depends on groundwater body 8 2.3. How to determine whether there is a significant damage to groundwater dependent terrestrial ecosystem 9 2.3.1. Threshold values and trigger values 9 2.3.2. GDTEs that depend on concentrations of naturally occurring substances above threshold values 10 2.4. How to determine the groundwater quantity and quality needs of groundwater dependent terrestrial ecosystems 10 2.5. Characterization and risk assessment 10 2.5.1. Stepwise approach 11 2.5.2. Consideration of groundwater threshold values 12 2.5.3. Investigations 12 3. Methodologies used for assessment of groundwater dependent terrestrial ecosystems in the European Union 13 3.1. Results from joint questionnaires 13 3.2. Methodology for identification and assessment of groundwater dependent terrestrial ecosystems in Estonia 14 3.2.1. Identification of terrestrial ecosystems depending on groundwater bodies 15 3.2.2. Indicators and criteria for the evaluation of quantitative and qualitative effects of groundwater bodies (GWBs) on groundwater dependent terrestrial ecosystems (GDTEs) 16 3.2.3. Evaluation schemes of quantitative and qualitative effects of groundwater bodies on groundwater dependent terrestrial ecosystems 18 3.2.4. Application of the evaluation schemes and conceptual models of groundwater dependent terrestrial ecosystems 21 3.2.5. Monitoring scheme for groundwater dependent terrestrial ecosystems 21 3.2.6. Conclusions 23 3.3. Delineation of threshold values for groundwater dependent terrestrial ecosystems in United Kingdom 23 3.3.1. Nutrients as a risk for GDTEs damage 24 3.3.2. Nutrient related wetland categories 24 3.3.3. Factors affecting the relationship between nutrient and wetland conditions 25 3.3.4. Development of threshold values for groundwater dependent terrestrial ecosystems 25 4. Development of joint methodology for identification and assessment of groundwater dependent terrestrial ecosystems in Gauja-Koiva river basin 27 4.1. Groundwater monitoring in Estonia and Latvia 27 4.1.1. Groundwater monitoring in Estonia 27 4.1.2. Groundwater monitoring in Latvia 30 4.1.3. Comparison of groundwater chemical monitoring in Estonia and Latvia 31 4.2. Groundwater assessment in Estonia and Latvia 32 4.2.1. Groundwater body delineation approaches in Estonia 33 4.2.2. Groundwater body delineation approaches in Latvia 37 4.3. Habitat assessment in Estonia and Latvia 39 4.3.1. Availability and quality of habitat data in Estonia 39 2 GroundEco “Joint management of groundwater dependent ecosystems in transboundary Gauja -Koiva river basin” 4.3.2. Availability and quality of habitat data in Latvia 41 4.4. Joint methodology 43 4.4.1. GDTE identification methodology for Estonia and Latvia 43 4.4.2. Results of the identification of significant GDTEs in Estonia and Latvia in Gauja-Koiva basin 48 4.4.3. Assessment schemes of groundwater dependent terrestrial ecosystems 51 4.4.4. Monitoring of GDTEs in Estonia and Latvia 57 5. Methodology validation and testing of best tools and parameters 61 5.1. Matsi spring fen pilot site in Estonia 61 5.1.1. Study site description 61 5.1.2. Methods 62 5.1.3. Results and discussion 65 5.2. Kazu leja valley pilot site in Latvia 79 5.2.1. Introduction 79 5.2.2. Identification of ecosystems and impacts using vegetation as a proxy 85 5.2.3. Geology and hydrogeology 94 5.2.4. Conclusions 115 5.2.5. Assessment of Kazu leja GDTE according to the schemes of quantitative and qualitative effect 116 5.2.6. 3D geological model of the Kazu leja site 119 5.3. Development of low-cost do it yourself sensors 123 5.3.1. Introduction 123 5.3.2. Low-cost sensor setup 123 5.3.3. Results of the low-cost sensor units 125 6. Conclusions and recommendations 129 6.1. GDTE identification, monitoring and assessment 129 6.2. Recommendations for GDTE assessment according to the quantitative and qualitative assessment schemes application 131 6.3. Future prospects 133 REFERENCES 134 ANNEXES 141 Characteristics of groundwater bodies delineated in Latvia (in Gauja river basin) 142 Characteristics of groundwater bodies delineated in Estonia (inside Koiva river basin) 152 Groundwater monitoring points in Gauja-Koiva river basin 162 Map of groundwater monitoring points in Gauja-Koiva river basin 163 3 GroundEco “Joint management of groundwater dependent ecosystems in transboundary Gauja -Koiva river basin” ABBREVIATIONS EC – European Commission EU – European Union GDTE – groundwater dependent terrestrial ecosystems GWB – groundwater body GWD – Groundwater directive TVs – threshold values WFD – Water Framework Directive 4 GroundEco “Joint management of groundwater dependent ecosystems in transboundary Gauja -Koiva river basin” INTRODUCTION Groundwater dependent terrestrial ecosystems (GDTE) are ecosystems that rely upon groundwater, e.g. fens, spring flushes, swamp forests. Significant changes in groundwater chemical composition (quality) and/or groundwater levels (quantity) can damage the quality of GDTE or even destroy it. GDTEs provide important ecosystem services such as regulation of water cycle, drinking water and other resources, pollution filtering, peat and carbon accumulation, unique biodiversity, interconnection with other ecosystems (landscape functioning), recreational and scenic value, and cultural heritage. According to the EU Water Framework Directive (2000/60/EC), the whole groundwater body (GWB, a management unit set by each Member State) is considered in poor status if anthropogenic pressure on groundwater causes significant damage to GDTE. Then, specific actions (in WFD – programmes of measures) must be planned and carried out to improve the status of GWB and thereby, restore the quality of damaged GDTE. Groundwater is a dynamic system which cannot be divided by human drawn boundaries such as country borders, and many valuable GDTEs depend on the quality of these water resources. From a hydrological viewpoint, the transboundary Gauja-Koiva river basin has a joint water cycle. It means that human induced activities (e.g. water extraction or pollution) on one side of the border can affect groundwater and associated ecosystems on the other side. Thus, without joint activities and cooperation it is impossible to sustainably manage transboundary natural resources in the long term. A theoretical approach on how to identify, assess, and monitor GDTEs has been previously developed in Estonia. Similar climatic and hydrogeological conditions allowed us to adapt the methodology to Latvia and jointly update it to fit the needs of both neighboring countries – Estonia and Latvia. During Interreg Estonia- Latvia project Est-Lat62 “Joint management of groundwater dependent ecosystems in transboundary Gauja-Koiva river basin” or GroundEco project, joint methodology for identification and assessment of GDTEs was developed which was used to identify GDTEs in transboundary Gauja-Koiva river basin. The methodology and best GDTEs assessment techniques were tested in two pilot areas – Matsi spring fen in Estonia and Kazu leja valley in Latvia. Finally, recommendations for better GDTEs monitoring and future works were developed. All results will be used to support the development of 3rd cycle River Basin management Plans (2021–2027) for Estonia and Latvia. We hope that this report will be useful for many habitat and hydro(geo)experts working with assessment of GDTEs in line with European Water Framework Directive as well as serves as a good starting point for better understanding of GDTEs functioning and linkage with groundwater resources. Authors: Retike, I.(1,3), Kalvāns, A.(3), Priede, A.(5), Tarros, S.(7), Terasmaa, J.(2), Türk, K.(4), Bikše, J.(3), Demidko, J.(1), Koit, O.(2), Küttim, M.(2), Lode, E.(2), Pärn, J.(2), Popovs, K.(3), Vainu, M.(2), Valters, K.(1), Abreldaal, P.(2), Babre, A.(3), Bīviņa, I.(6), Caune, K.(1), Marandi, A.(7), Polikarpus, M.(7), Raidla, V.(7), Rieksta, M.(6), Sisask, K.(2) 1. Latvian Environment, Geology and Meteorology Center (Latvijas Vides, ģeoloģijas un meteoroloģijas centrs) 2. Tallinn University, Institute of Ecology (Tallinna Ülikool) 3. University of Latvia, Faculty of Geography and Earth Science (Latvijas Universitāte, Ģeogrāfijas un Zemes zinātņu fakultāte) (Latvia) 4. Ministry of Environment (Keskkonnaministeerium) (Estonia) 5. Nature Conservation Agency (Dabas aizsardzības pārvalde) (Latvia) 6. Vidzeme Planning region (Vidzemes plānošanas regions) (Latvia) 7. Geological Survey of Estonia (Eesti Geoloogiateenistus) (Estonia) This document reflects the views of the authors. The managing authority of the programme is not liable for how this information may be used. 5 GroundEco “Joint management of groundwater dependent ecosystems in transboundary Gauja -Koiva river basin” 1. Description of GroundEco project Project “Joint management of groundwater dependent ecosystems in transboundary Gauja-Koiva river basin (GroundEco)” is being implemented
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    YEARBOOK GEOLOGICAL SURVEY OF ESTONIA F. R. Kreutzwaldi 5 44314 Rakvere Telephone: (+372) 630 2333 E-mail: [email protected] ISSN 2733-3337 © Eesti Geoloogiateenistus 2021 2 Foreword . 3 About GSE . 5 Cooperation . 6 Human resource development . 9 Fieldwork areas 2020 . 12 GEOLOGICAL MAPPING AND GEOLOGICAL DATA Coring – a major milestone in subsurface investigations in Estonia . 13 Coring projects for geological investigations at the GSE in 2020 . 15 Distribution, extraction, and exploitation of construction minerals in Pärnu county . 17 Mineral resources, geophysical anomalies, and Kärdla Crater in Hiiumaa . .22 Geological mapping in Pärnu County . .26 Opening year of the digital Geological Archive . .29 HYDROGEOLOGY AND ENVIRONMENTAL GEOLOGY Status of Estonian groundwater bodies in 2014–2019 . 31 Salinisation of groundwater in Ida-Viru County . .35 Groundwater survey of Kukruse waste rock heap . .37 The quality of groundwater and surface water in areas with a high proportion of agricultural land . .39 Transient 3D modelling of 18O concentrations with the MODFLOW-2005 and MT3DMS codes in a regional-scale aquifer system: an example from the Estonian Artesian Basin . .42 Radon research in insuffi ciently studied municipalities: Keila and Võru towns, Rõuge, Setomaa, Võru, and Ruhnu rural municipalities . .46 GroundEco – joint management of groundwater dependent ecosystems in transboundary Gauja–Koiva river basin . .50 MARINE GEOLOGY Coastal monitoring in 2019-2020 . .53 Geophysical surveys of fairways . .56 Environmental status of seabed sediments in the Baltic Sea . .58 The strait of Suur väin between the Estonian mainland and the Muhu Island overlies a complex bedrock valley . 60 Foreword 2020 has been an unusual year that none of us is likely to soon forget.
  • Impact of Past and Present Management Practices on the Land Snail Community of Nutrient-Poor Calcareous Grasslands

    Impact of Past and Present Management Practices on the Land Snail Community of Nutrient-Poor Calcareous Grasslands

    Impact of past and present management practices on the land snail community of nutrient-poor calcareous grasslands Inauguraldissertation zur Erlangung der Würde eines Doktors der Philosophie vorgelegt der Philosophisch-Naturwissenschaftlichen Fakultät der Universität Basel von Cristina Boschi aus Melide TI Basel, 2007 Genehmigt von der Philosophisch-Naturwissenschaftlichen Fakultät auf Antrag von Prof. Dr. Bruno Baur und Prof. Dr. Andreas Erhardt Basel, den 24. April 2007 Prof. Dr. Hans-Peter Hauri Dekan Table of contents General introduction 3 Chapter 1 11 The effect of horse, cattle and sheep grazing on the diversity and abundance of land snails in nutrient-poor calcareous grasslands Chapter 2 23 Effects of management intensity on land snails in Swiss nutrient-poor pastures Chapter 3 31 Past pasture management affects the land snail diversity in nutrient-poor calcareous grasslands Chapter 4 57 The effect of different types of forest edge on the land snail communities of adjacent, nutrient-poor calcareous grasslands General discussion 77 Summary 84 Dank 87 Curriculum vitae 90 2 General introduction 3 General introduction Biodiversity in semi-natural grasslands Nutrient-poor, dry calcareous grasslands in Central Europe harbour an extraordinary high diversity of plants and invertebrates (Ellenberg, 1996; Kirby, 2001; WallisDeVries et al., 2002). These semi-natural grasslands have been cultivated for hundreds of years in an extensive way, mainly by grazing and harvesting hay (Poschlod and WallisDeVries, 2002). Since the beginning of the twentieth century, increasing pressure for higher production at low cost has led to either an intensification of grassland use (increased stocking rate and/or increased use of fertilizer) or to abandonment (Hodgson et al., 2005; Strijker, 2005).
  • Dynamical, Biological, and Anthropic Consequences of Equal Lunar and Solar Angular Radii Rspa.Royalsocietypublishing.Org Steven A

    Dynamical, Biological, and Anthropic Consequences of Equal Lunar and Solar Angular Radii Rspa.Royalsocietypublishing.Org Steven A

    Dynamical, biological, and anthropic consequences of equal lunar and solar angular radii rspa.royalsocietypublishing.org Steven A. Balbus 1Astrophysics, Keble Road, Denys Wilkinson Building, Research University of Oxford, Oxford OX1 3RH The nearly equal lunar and solar angular sizes Article submitted to journal as subtended at the Earth is generally regarded as a coincidence. This is, however, an incidental consequence of the tidal forces from these bodies Subject Areas: being comparable. Comparable magnitudes implies Astronomy, Astrobiology strong temporal modulation, as the forcing frequencies are nearly but not precisely equal. We suggest that on Keywords: the basis of paleogeographic reconstructions, in the Devonian period, when the first tetrapods appeared Tides, evolution, Moon on land, a large tidal range would accompany these modulated tides. This would have been conducive to Author for correspondence: the formation of a network of isolated tidal pools, Steven Balbus lending support to A.S. Romer’s classic idea that the e-mail: [email protected] evaporation of shallow pools was an evolutionary impetus for the development of chiridian limbs in aquatic tetrapodomorphs. Romer saw this as the reason for the existence of limbs, but strong selection pressure for terrestrial navigation would have been present even if the limbs were aquatic in origin. Since even a modest difference in the Moon’s angular size relative to the Sun’s would lead to a qualitatively different tidal modulation, the fact that we live on a planet with a Sun and Moon of close apparent size is not entirely coincidental: it may have an anthropic basis. arXiv:1406.0323v1 [astro-ph.EP] 2 Jun 2014 c The Author(s) Published by the Royal Society.