Euro-Limpacs Integrated Project to Evaluate the Impacts of Global Change On
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GOCE-CT-2003-505540 Project acronym: Euro-limpacs Integrated Project to evaluate the Impacts of Global Change on European Freshwater Ecosystems Instrument type: Integrated Project Priority name: Sustainable Development Deliverable No. 13 Report – review of existing information on key taxa and functional groups relevant to the eight study catchments Due date of deliverable: 31/7/2005 First submission date: 31/7/2005 Actual submission date: 31/8/2005 Start date of project: 01.02.04 Duration: 5 Years Organization name of lead contractor for this deliverable: Masaryk University Revision: final 1 Integrated Project to evaluate the Impacts of Global Change on European Freshwater Ecosystems WP2: Climate-hydromorphology interactions Task 2 Hydromorphological changes and aquatic and riparian biota Subtask 2.1 Review and data collation Deliverable No. 13 Report – review of existing information on key taxa and functional groups relevant to the eight study catchments Compiled by Libuse Opatrilova26, Piet Verdonschot6, Thomas Ofenböck15, John Murphy3, Stefania Erba16, Leonard Sandin11, Armin Lorenz4, Carmen Postolache31 and Muriel Gevrey17 Partners 26 (MasUniv, Czech Republic), 6 (ALTERRA, The Netherlands), 15 (BOKU, Austria), 3 (NERC, United Kingdom), 16 (CNR- IRSA, Italy), 11 (SLU, Sweden), 4 (UDE, Germany), 31 (UNIBUC-ECO, Romania) and 17 (CNRS-UPS, France) 2 INDEX 1. Subtask description and detailed workplan ............................................... 4 2. Relation to Subtask 1.1 – Climate-hydromorphology interactions through changes in land-use and discharge: review of information relating selected study catchment across Europe ..................................... 5 3. Work progress ............................................................................................... 6 4. Literature review – relationship between hydrology/hydromorphology and benthic macroinvertebrates .................................................................. 16 5. Contribution by Alterra (Netherlands) ......................................................... 29 6. Contribution by BOKU (Austria) ................................................................... 57 7. Contribution by CEH (UK) ............................................................................. 96 8. Contribution by CNR-IRSA (Italy) ................................................................. 114 9. Contribution by UDE (Germany) ................................................................... 116 10. Contribution by UNIBUC-ECO (Rumania) .................................................. 142 11. Contribution by CNRS-UPS (France) ......................................................... 153 12. Contribution by SLU (Sweden) ................................................................... 156 13. Contribution by Masaryk University (Czech Republic) ............................ 172 14. Summary ...................................................................................................... 198 15. Conclusion ................................................................................................... 201 ANNEXES ANNEX 1. WP2, Subtask 2.1 overview 3 1. Subtask description and detailed workplan The main aim of this subtask is to review existing information on key taxa or functional groups identified in the study catchments. Data relating to the distribution in space and time of characteristics taxa (mainly macroinvertebrates) were collated. This biological data will be use in subtasks 2.2, 2.3, 2.4 and 2.5. Data sources as existing literature, other ecological studies, data collected by water authorities and other organization were evaluated. The analysis, which were jointly performed, aimed at clarification of main questions: What are the relations between hydrology/hydromorphology and species composition? Which species or biological parameters are good indicators for changes in hydrology/hydromorphology? Detailed workplan – Activities (with participants listed) Month(s) Activity Description of activity Partners Involved No. 1 1 Review of existing literature and linkage to reviews MasUniv, Alterra, of other projects (REBECCA) BOKU, NERC-CEH, CNR, SLU, UDE, UNIBUC-ECO 1 2 Collection of historical and present day biological Alterra, BOKU, data MasUniv, NERC- CEH, CNR, SLU, UDE, UNIBUC-ECO 6 3 Data analysis Alterra, BOKU, MasUniv, NERC- CEH, CNR, SLU, UDE, UNIBUC-ECO 12 4 Report MasUniv, Alterra, BOKU, NERC-CEH, CNR, SLU, UDE, UNIBUC-ECO Milestones (relate to activities) Milestone Activity Month No. review 1 18 data collation 2 9 data analysis 3 12 report 4 18 Deliverable (relate to activities) Deliverable Activity Month No. Report – review of existing information on key taxa and functional groups 4 18 relevant to the eight study catchments 4 2. Relation to Subtask 1.1 – Climate-hydromorphology interactions through changes in land-use and discharge: review of information relating selected study catchment across Europe Our subtask 2.1 supplements the subtask 1.1 which was finished at the end of first year of project duration. Regarding climatic/discharge scenarios and in view of the information from the report for subtask 1.1 it is expected an increase in temperature, a decrease in summer and an increase in autumn-winter precipitations and an increase of extreme daily precipitation. Consequently, discharge will show a more dynamic regime, due to increases in extreme daily precipitation and in severity of droughts. The alternative key hypotheses are: • Global change may cause hydromorphological deterioration through intensification of land-use or through a more variable discharge regime that results in habitat modification and losses. • Alternatively, global change may cause significant improvement if, for example, human disturbance are withdrawn from floodplains due to more frequent flood events or as a result of floods that generate a near-natural habitat structure. Regarding land-use scenarios there is the lack of information on the combined effects of climate-discharge-hydromorphology in the selected catchments, land-use scenarios are mainly based on the actual land-use and on historical reconstruction of its general trend. To main conclusions of subtask 1.1 belong: • Evidence a relationship between drainage measures and the mobility of sandy substrates (BOKU). • A stream-size specific relationship between land-use and hydromorphology (UDE). • The multivariate analysis evidenced that the land-use data often cannot be used to really predict/calculate the hydromorphological state. • Catchment scale land-use may be related to depositional/erosional activity at site scale and may influence microscale characteristics of current velocities and substrates (CNR-IRSA). • The importance of in-stream meso/microhabitat characteristics of substrate/channel vegetation and as the most important explanatory variables were shading along the banks of the river or stream, the mean depth and whether of not the stream were meandering (SLU). • Confirmation the importance of in-stream vegetation, evidencing its association with land-use (NERC). According to the preliminary results of subtask 1.1, several issues (released in conclusions of the subtask 1.1 report) could be of interest in Task 2, e.g.: • The impact of hydromorphological stress on aquatic insects and test whether the effects of this stressor differed in different habitat types as riffles, pools and banks. • The relationship between aquatic community structure, species richness, colonization strategies, r and k strategy and the hydromorphological state in terms of river stability/instability (macroscale-mesoscale). 5 • Aquatic community in more stable conditions with vegetated substrates, various habitat types and food resources should be compared with aquatic communities in unstable conditions. • The study of riparian zones as terrestrial-wetland ecotones and how they can affect both the adjacent benthic and terrestrial communities in relation to land-use and river reach stability/instability. • Considerations could be extended to a stream typology following a question if there are any differences between stream types. 3. Work progress A report on subtask 2.1 is indicated for Delivery in Month 12 in the list of deliverables. However, this task was originally planned to be completed in month 18 and therefore this deliverable was re-scheduled for month 18. What was done during first six months: UNIBUC-ECO: A review of existing biological data from literature and other research projects had been performed. Field trips to collect additional samples to describe (assess) the present situation were organized. Data on water chemistry were collected from the regional water agency and previous UNIBUC-ECO research projects. ALTERRA: A review of the existing historical and present data took place. A questionnaire was sent out to water managers with the aim of providing an overview of restoration and rehabilitation projects relating to lowland streams. A workshop was held to compile a metadatabase on the Vecht catchment. Historical, environmental and biological data were collected for larger streams and rivers in the study area. SLU: Biological variables were collected, including fish and benthic macroinvertebrates and, for some sites, phytobenthos and macrophytes. NERC: Existing biotic data for River Lambourn had been collating (macroinvertebrate and macrophyte data). Analyses were focussing on the relationship between macroinvertebrate communities, macrophyte assemblage structure and cover and substratum characteristics.