The effect of land use in the catchment and meteorological conditions on the riverine transport of dissolved organic carbon into the Puck Lagoon (southern Baltic)
- 59 Downloads
Dissolved organic carbon (DOC) concentration and fluxes from four rivers draining the catchment of the Puck Lagoon in southern Baltic are presented. Water samples from rivers and coastal zone close to the rivers’ mouth were collected from April 2015 to March 2017. DOC was measured using high temperature catalytic oxidation with an NDIR detection. DOC concentration in rivers as well as area specific load discharged to the lagoon reflected variations of land use along their course. Area specific load of DOC discharged by rivers with high proportion of forests, meadows, and pastures in the catchment was significantly higher as compared to rivers with catchment dominated by arable land. However, the main controlling factor of the total discharged loads of DOC was the water flow. The highest loads were observed during the downpour. That was due to the larger volumes of water transported with rivers and the higher concentration of DOC resulting from increased leaching from the catchment area. The obtained results are especially important in the light of climate change in the southern Baltic region. According to the forecasts, we can expect increased precipitation and flooding and consequently increased leaching from the catchment and transport of DOC to the sea via rivers.
KeywordsDOC Freshwater discharge Watershed Precipitation Climate change
This work was supported by the National Science Centre (grant number 2014/13/B/ST10/02807) and University of Gdansk (grant number 538-G235-B207-16).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- Andrulewicz, E. & Janta, A. (1997). Puck Lagoon. In A. Janta (Ed.), Seaside landscape park (pp. 123–137). Władysławowo: Coastal Landscape Park Publisher (in Polish).Google Scholar
- Benner, R. (2002). Chemical composition and reactivity. In A.D. Hansell & C.A. Carlson (Eds.), Biogeochemistry of marine dissolved organic matter (pp. 59–90). Academic Press.Google Scholar
- Degens, E. T., Kempe, S., & Richey, J. E. (1991). Summary: biogeochemistry of major world rivers. In E. T. Degens, S. Kempe, & J. E. Richey (Eds.), Biogeochemisty of major world rivers (pp. 323–347). Chichester: Wiley.Google Scholar
- Gambrell, R.P. & Patrick, W.H. (1978). Chemical and microbiological properties of anaerobic soils and sediments. In D.D. Hook, R.M.M. Crawford (Eds.). Plant life in anaerobic environments (pp. 375–423). MI, USA: Ann Arbor Science.Google Scholar
- Gogou, A., & Repeta, D. J. (2010). Particulate-dissolved transformations as a sink for semi-labile dissolved organic matter: chemical characterization of high molecular weight dissolved and surface active organic matter in seawater and in diatom cultures. Marine Chemistry, 121, 215–223.CrossRefGoogle Scholar
- HELCOM (2010). Hazardous substances in the Baltic Sea—an integrated thematic assessment of hazardous substances in the Baltic Sea. Baltic Sea Environment Proceedings No. 120B.Google Scholar
- HELCOM (2013). Climate change in the Baltic Sea area: HELCOM thematic assessment in 2013. Baltic Sea Environment Proceedings No. 137.Google Scholar
- IMGW (2017). Bulletin of the National Hydrological and Meteorological Service, Year 2016. Warszawa: IMGW-PIB (in Polish).Google Scholar
- Korzeniewski, K. (1993). Puck Bay (532p). Gdańsk: FRUG (in Polish).Google Scholar
- Krajewska, Z. & Bogdanowicz, R. (2009). Differentiation of the export amount of biogenic substances in the catchment area of the Puck Bay. In A.T. Jankowski, D. Absalon, D. Machowski, M. Ruman. (Eds.). Transformation of water relations in a changing environment (pp. 177–187). Sosnowiec: University of Silesia, the Polish Geographical Society (in Polish).Google Scholar
- Kruk-Dowgiałło, L., & Szaniawska, A. (2008). Puck Bay. In U. Schiewer (Ed.), Ecology of Baltic coastal waters (pp. 154–162). Berlin Heidelberg: Springer-Verlag.Google Scholar
- Macioszczyk A. & Dobrzyński D. (2002). Hydrogeochemistry (448 p.). Warszawa: PWN (In Polish).Google Scholar
- Niemirycz, E. (2011). Riverine inflow of chemical substances. In Sz. Uścinowicz (Ed.) Geochemistry of the Baltic sea surface sediments (pp. 93–113). Warszawa: PIG-PIB.Google Scholar
- Pastuszak, M., & Igras J. (2012). Temporal and spatial differences in mission of nitrogen and phosphorus from polish territory to the Baltic Sea (448 p.). Gdynia–Puławy: National Marine Fisheries Research Institute.Google Scholar