Alexandru Moisuc

Influence of Prunus spinosa L. shrub on the grassland vegetation in western Romania

Small water reservoirs play important role in rural areas. They used to be very popular, but most of them have been devastated in the last century. It is worth to restore them and to construct new ones. Very small reservoirs (ponds) can be constructed in economical and cost efficient way by individual farmers. In regard to damming below 1.0 m and to reservoirs situated outside protected areas, the permission for construction and the environmental impact assessment is not required. However, one should always keep in mind that even the smallest construction is the work of engineering and should be performed in accordance with the current standards. The increase of available water resources and improvement of water quality demand various measures including those aimed at reducing and limiting water runoff and pollutants transport from the river basins. One of the methods to improve the structure of water balance and the amount of water in rivers is the construction of a large number of small reservoirs, wetland reconstruction etc. Such reservoirs may be divided to: recreational, floristic and faunistic conservation sites, swimming pools, water quality protection (constructed wetlands) and infiltration reservoirs. Reservoirs can have many functions of the economic and natural character. If they are designed and constructed properly they can be a valuable element of the natural landscape in rural areas. Basic data for designing of small reservoirs serving mainly recreational (decorative) purposes and those used for water treatment and ground water recharge are given in the paper.

BE-NATUR: Transnational Management of Natura 2000 Sites

Renate Mayer, Claudia Plank, Bettina Plank, Andreas Bohner, Veronica Sărăţeanu, Ionel Samfira, Alexandru Moisuc, Hanns Kirchmeir, Tobias Kostl, Denise Zak, Zoltan Argay, Henrietta Dosa, Attila Gazda, Bertalan Balczo, Ditta Greguss, Botond Bako, Andras Schmidt, Peter Szinai, Imre Petroczi, Robert Benedek Sallai, Zsofia Fabian, Daniel Kreiner, Petra Sterl, Massimiliano Costa, Radojica Gavrilovic, Danka Randjic, Viorica Biscă, Georgeta Ivanov and Fănica Bascău

Assessing the factors limiting the Rosa gallica L. shrub occurrence in Romanian grasslands (case study)

Analyses of water conditions in the Lower Basin of the Biebrza River and deposit stratigraphy were conducted in cross-sections through the valley, where geodetic measurements were also made. Peat type in particular layers of the soil profile was determined in selected cross-sections at 100 m intervals. The Lower Basin of the Biebrza River is diverse with regard to the type of water supply to a peatbog, the shape of the bio-accumulative basin’s bottom and the slope of peatbog surface along and across the valley. These factors resulted in the development of different habitats in the peatbog. Northern part of the Lower Basin, between the main road in the village Osowiec and the inflows of the Kosodka and Wissa rivers to the Biebrza River, is a narrow valley supplied mainly with overflowing water of the Biebrza River. Habitats and hydrogenic deposits of this area developed in relation to the type and layout of mineral substratum and to the duration and depth of seasonal flooding. North-west part is mainly supplied by ground water from the adjacent upland. Peat layers, developed on ground waters flowing out from the upland, markedly slope toward the bed of the Biebrza River. Considerable fluctuations of the ground water level can be observed there and most frequently the sites are periodically drying. Part of the valley, from the inflows of the Kosodka and Wissa rivers down to the Biebrza and Narew River confluence, is mainly supplied with underground waters from upland.