Euro-limpacs Deliverables

ABSTRACT - DELIVERABLE 84

Report on field monitoring activities

The report is focused on filling the gaps in data identified during the last report, in order to better sustain the data analysis for achieving the aims of the task 4.4. As defined in the project application the aims of the task 4.4 are:

  1. Identification of effects of climate change on the buffer capacity of river marginal wetlands (along the lower stretches of large rivers) – Study case: Lower Danube Wetland System/ Small Island of Braila;
  2. Analysis of knowledge on the relationships between riparian wetlands and adjacent surface waters including identification of gaps and requirements for new information.

The approach for task 4.4 was already presented in the previous activity report (deliverable 50). During the current reporting period effort was focused on

  1. Collecting the data and filling the gaps along the first growth season
  2. Activities for supplementing data sets by collating new field data and laboratory experimentation including development of specific protocols for investigation of sediment /nutrient retention, and processes like mineralization rate and denitrification.
  3. Preliminary evaluation of the impact of shifts in the functioning of marginal wetlands mediated by climate change on adjacent surface waters and landscapes;
  4. Statistical analysis of the data sets focusing on establishing relationships between climate and hydrological time series and TDM’s;

The previous report included existing data, short gaps analysis and the task to be undertaken in order to reach the objectives of the Task 4.4 as follows:
A gap analysis pointed out some of the important problems identified both in the data set and in the tools needed for the analysis:

  1. Lack of complementarity between some data sets both spatially (different systems) and temporally (for different time periods);
  2. Lack of efficient tools for scaling up from local ecosystem to landscape level;
  3. Inadequate modeling of specific and complex regional landscape of LDWS;

The dataset was enlarged with new data coming from the monitoring programme (including zoobenthos, phytoplankton, and zooplankton, chemical and physical data). New data relating the discharge and level data of the Danube River were also collected. At the same time data regarding the water level in shallow floodplain and delta lakes were added. During last year (2006), new data have been collected on zoobentos structure – including taxa composition as well as numerical abundance in 5 lakes and one channel from Danube Delta and RMW from Braila Islands. For this, two field trips were organized in the Danube Delta and Braila Islands during high water levels and respectively during low water levels. These data fill in the gaps relating to the response of the selected compartments (phytoplankton, zooplankton, zoobentos) to unusually high Danube river discharge and high water level in lakes (observed during the year 2006). Samples are in different stages of processing.

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