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  • Author: Valentin Zaharia x
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Valentin Zaharia and Dragoş Găitănaru

Abstract

Wetlands located in cities are among the most diverse and productive natural based systems which provide important benefits such as water quality improvement, flood control, soil erosion protection, recreation opportunities, support for wildlife and natural products. This paper presents the water budget in Văcărești wetland in order to provide an overview of the hydrological processes that make wetlands unique. Văcărești wetland is located in south part of Bucharest city and represents the single urban Natural Park in Romania. The existing wetland has been formed on an area conceived initially as the bottom of an artificial lake where the nature and the wildlife developed on their own. Using historical data and several algorithms, this paper presents the analysis of the water budget on the considered area which would lead to a better assessment of the hydrological processes. The goal of the study was to gain knowledge on how the wetland is sustained and, as a result, to develop solutions to prevent the ecosystem deterioration conducted by external pressures like climate change with extended periods of droughts or anthropic influences.

Open access

Cătălin-Răzvan Stanciu, Răzvan Zaharia, Gabriel-Bogdan Chişamera, Ioana Cobzaru, Viorel-Dumitru Gavril, Răzvan-Valentin Popescu-Mirceni and Dumitru Murariu

Abstract

We investigated diurnal raptors movements in the Black Sea basin. Bird migration over the western Black Sea has not been studied properly, scarce data being available mainly by Drost’s paper (1930) thus referring only to the birds from Snakes Island, and few new data collected during more recent research expeditions. The study of migration over large water bodies is a very complex task, due to the difficulty of reaching these areas; observations in this paper were made from research vessels and offshore oil rigs. Our data together with previously published information provides a new insight into bird migration routes over the Black Sea. Species observed across the Black Sea basin followed routes that are part of Via Pontica Corridor and Trans-Caucasian Corridor. The aim of this paper is to have a clearer image of the migration phenomenon in this area, such data are important for management and conservation of migratory birds.