We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Significance of nutrient fluxes via submarine groundwater discharge in the Bay of Puck, southern Baltic Sea.
- Authors
Szymczycha, Beata; Kłostowska, Żaneta; Lengier, Monika; Dzierzbicka-Głowacka, Lidia
- Abstract
• Quantification of SGD derived nutrients. • The obtained nutrient flux via SGD is higher than in our previous study which included only a fresh SGD component. • The obtained results indicate that SGD is an important driver of nutrient release from sediments. • Nutrient fluxes via SGD are higher than via other sources. In this study, we collected submarine groundwater discharge (SGD) and seawater samples at six sites in the Bay of Puck, in the southern Baltic Sea, in order to estimate the nutrient distribution in groundwater affected areas. In addition, we estimated nutrient fluxes via SGD, including both fresh SGD (FSGD) and recirculated seawater SGD (RSGD), to the entire Bay of Puck. Phosphate (PO 4 3−) concentrations varied significantly among study sites and seasons, while both ammonium (NH 4 +) and nitrates (NO 3 −) concentrations varied only seasonally. The N:P ratio indicated P limitation in most of the samples. The estimated seasonal and annual loads, via SGD, of both dissolved inorganic nitrogen (DIN; 9303 t yr−1) and PO 4 3− (950 t yr−1), were the most significant source of nutrients to the Bay of Puck, and notably higher than quantified before (FSGD nutrient loads of 50 t yr−1 and 56 t yr−1 for DIN and PO 4 3−, respectively). The SGD fluxes reported here indicate some of the highest rates of sediment-water fluxes reported in the Baltic Sea. These results suggest that SGD (both FSGD and RSGD) should be considered as source of chemical substances to the marine environment.
- Subjects
GROUNDWATER; SALTWATER encroachment; SEASONS; SEAWATER; COASTS
- Publication
Oceanologia, 2020, Vol 62, Issue 2, p117
- ISSN
0078-3234
- Publication type
Article
- DOI
10.1016/j.oceano.2019.12.004