Restoration plan for the old bed of Mirna River – biological and ecological research and data preparation

Project name: Restoration plan for the old bed of Mirna River – biological and ecological research and data preparation

Client: Hrvatske vode – legal entity for water management
Period: 06/2013 – 03/2016
Funding: State Budget
Location: Istria, Croatia

An interdisciplinary research project where the main goal is determination, analysis of the current state of the ecosystem and ecological modelling of optimum ecological status of Motovun Forest, as a baseline study for the revitalisation of the old river bed of Mirna River. During the project implementation, the following services were provided:

  1. Condition and description of Motovun Forest ecosystems:

    1.1. The key processes that define habitat –  Hydrological data analysis with presentation of historical changes; Assessment of water quality according to biological indicators (macrozoobenthos, fishes, microphytobenthos; hydromorphology) and physical & chemical indicators (in accordance with the Water Frame Directive); Measurement and analysis of the groundwater level and the groundwater quality in the Motovun forest; Sediment analysis; Pedology (Pedophysical and Pedochemical properties); Description of Climate of the area; Spatial distribution parameters of micro relief.

   1.2. Biological communities and species in the current habitat – analysis of forest communities (vegetation types, bioindicators species, physiological condition, vitality and productivity of the canopy of edificator tree species; projection of future bio-ecological dynamics); Analysis of the population conditions and the habitat conditions of other endangered and protected species from Motovun Forest and Mirna River; Description of temporal status and habitats of the truffles in Motovun Forest; Description of conservation objectives of Natura 2000)

  1. Definition of the optimal conditions of the ecosystem (including Natura 2000 areas and conservation objectives)
  2. The impact of air quality on the stability of the forest ecosystem in Motovun Forest

Within the project, the following methods were implemented: Ichthyofauna standard sampling methods using direct current (dc) fields (STARFISH protocol); Macroinvertebrate and phytobenthos sampling (AQEM protocol); Hydrogeomorphology assessment, water quality assessment (Water Framework Directive); Pizeometer installation and measurement; Dendrometry sampling and analysis; Vegetation survey and analysis; Soil sampling and analysis; Hydrology and climate data analysis; Time series analysis of dominant tree species throughout application of spatial series satellite imagery; Rare and endangered species analysis; Air pollution monitoring through lichenoflora analysis (and mapping); GPS/GIS data integration and analysis, ecological modelling; Definition of optimal ecological conditions.

Services provided:

  • Consolidation and analysis of existing literary data
  • Establish geoinformation system
  • Baseline survey of vegetation types and state of bioindicator population
  • Detect time trends of state indicators including growth parameters and canopy vitality parameters
  • Projection of future biological-ecological dynamics of forest ecosystem.


Oikon d.o.o.

Oikon d.o.o.