The conditions of first ice formation in the Polish coastal zone of the Baltic

Girjatowicz, J.P.

doi:10.3750/stn/srn/t07/z1/04

Cited by 3 publications

(8 citation statements)

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“…In the case of piscivorous birds, increasing ice cover does not affect their numbers negatively. The ORE is never completely covered by ice: the shipping lane between Świnoujście and Szczecin is kept free of ice ( Girjatowicz, 1990 ; Girjatowicz, 2005 ), and there are always other areas free of ice, especially at the mouths of the small rivers flowing into the estuary. These ice-free areas may still abound in fish and provide food for piscivores.…”

Section: Discussionmentioning

confidence: 99%

“…This estimate is a good approximation for the region. In practice, however, the ORE is never completely covered by ice ( Girjatowicz, 1990 ; Girjatowicz, 2005 ; see the Discussion for an explanation) and birds are still present in such conditions. We also utilized the maximum ice extent in the Baltic Sea (max ice; data obtained from the website of The European Environment Agency; EEA-The European Environment Agency, 2017 ).…”

Section: Methodsmentioning

confidence: 99%

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Ducks change wintering patterns due to changing climate in the important wintering waters of the Odra River Estuary

Marchowski

Jankowiak

Wysocki

et al. 2017

PeerJ

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Some species of birds react to climate change by reducing the distance they travel during migration. The Odra River Estuary in the Baltic Sea is important for wintering waterfowl and is where we investigated how waterbirds respond to freezing surface waters. The most abundant birds here comprise two ecological groups: bottom-feeders and piscivores. Numbers of all bottom-feeders, but not piscivores, were negatively correlated with the presence of ice. With ongoing global warming, this area is increasing in importance for bottom-feeders and decreasing for piscivores. The maximum range of ice cover in the Baltic Sea has a weak and negative effect on both groups of birds. Five of the seven target species are bottom-feeders (Greater Scaup Aythya marila, Tufted Duck A. fuligula, Common Pochard A. ferina, Common Goldeneye Bucephala clangula and Eurasian Coot Fulica atra), and two are piscivores (Smew Mergellus albellus and Goosander Mergus merganser). Local changes at the level of particular species vary for different reasons. A local decline of the Common Pochard may simply be a consequence of its global decline. Climate change is responsible for some of the local changes in the study area, disproportionately favoring some duck species while being detrimental to others.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Ducks change wintering patterns due to changing climate in the important wintering waters of the Odra River Estuary

Marchowski

Jankowiak

Wysocki

et al. 2017

PeerJ

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“…The materials were collected by the Institute of Meteorology and Water Management -National Research Institute (IMWM-NRI, in Polish: IMGW-PIB). Data for the period 1960/61-2019/00 were published in "Catalogue of ice conditions …" (Girjatowicz, 2007). Data for the period 2000/01-2019/20 were retrieved directly from the archives of IMWM-NRI.…”

Section: Methodsmentioning

confidence: 99%

“…These few papers usually concern the variability in selected ice parameters, mostly ice season duration, number of days with ice, and annual maximum ice thickness only for some lakes, and over various study periods. In addition to the analysis of trends (Sziwa and Jańczak, 2009;Ptak, 2013;Choiński et al, 2014), the papers on ice phenomena on coastal lakes also present the frequency and spatial variability in ice parameters (Girjatowicz, 2002), the links between ice parameters and air temperature, especially with regard to the occurrence of positive thermal trends (Marszelewski and Skowron, 2006), relationships between ice thickness and lake depth (Pasławski, 1982;Sziwa and Jańczak, 2009;Choiński, 2010), as well as changes in ice phenology related to location and morphometry (Choiński et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Relationships between air temperature and ice conditions on the southern Baltic coastal lakes in the context of climate change

2022

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Shallow, lagoonal coastal lakes of the Southern Baltic are exceptionally susceptible to atmospheric factors. This work examines the influence of winter air temperatures in Ustka on ice parameters (dates of first ice occurrence and last ice disappearance, ice season duration, number of days with ice, and maximum ice thickness) on Southern Baltic coastal lakes (Jamno, Bukowo, Gardno, Łebsko), and trends displayed by changes in these parameters over the period spanning 1960/61-2019/20. The research data was retrieved from the archives of Institute of Meteorology and Water Management – National Research Institute. As a first step of the analysis, we investigated the statistical relationships in spatial and temporal variations in winter air temperature and coastal lake ice parameters. Correlation and regression method was employed to determine the influence of air temperature on coastal lake ice conditions. Correlation and determination coefficients were calculated, and linear regression equations were determined. The statistical significance of the observed relationships was assessed using Fisher-Snedecor test. Additionally, linear trend models were constructed. Our analysis indicates that from 1960/61 to 2019/20, the average rate of increase in winter temperature (December-March) in Ustka equalled 0.04°C ⋅year-1. The correlation coefficients for air temperature versus ice parameters were highly statistically significant (p<0.001). The strongest relationships (with correlation coefficients below -0.90) occurred between air temperature and number of days with ice. Ice season duration and number of days with ice are both closely linked with last ice disappearance date and ice thickness. Our analysis shows that a 1°C increase in average seasonal air temperature will result in the number of days with ice on the studied coastal lakes becoming reduced by 16-17 days. All trends in ice parameters indicate a mildening of ice conditions. Most of the assessed trends are statistically significant. The strongest trends were observed for ice season duration, and indicate its shortening toward the east, from 0.66 day ⋅year-1 (Lake Jamno) to 1.16 day ⋅year-1 (Lake Łebsko). All correlation coefficients for ice trends were found to increase eastward, which could be explained by an increasing influence of the warming climate over the Southern Baltic in this direction. The strong relationships between air temperature and Southern Baltic coastal lake ice parameters, and the determined rate of changes may have a significance for forecasting, as the shifting dates of ice formation and disappearance on lakes are highly important for the lake hydrodynamics, and the functioning of aquatic ecosystems.

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“…The average ice season duration, i.e. the number of days from the first to the last day with ice, ranges from 10 to 30 days for most stations along the southern Baltic coast, and the mean maximum ice thickness in the winter season for the period from 1954/1955 to 1999/2000 ranges from 5 to 12 cm (Girjatowicz 2007). This variation in ice conditions is mainly due to the seabed bathymetry and the river ice influx.…”

Section: Introductionmentioning

confidence: 99%

Relationships between the Baltic Sea ice extent and ice parameters in the sheltered basins of the southern Baltic coast

Girjatowicz

Świątek

2020

Oceanological and Hydrobiological Studies

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In the study, archive data on the maximum annual ice extent in the Baltic Sea (MIB) for the period 1961–2018 were used. They were obtained from the FIMR database. Data on ice parameters for the four largest southern Baltic coastal lakes: Jamno, Bukowo, Gardno and Łebsko, and for Szczecin, Puck, and Vistula Lagoons, come from the Maritime Branch of Institute of Meteorology and Water Management – National Research Institute (in Polish: Instytut Meteorologii i Gospodarki Wodnej – Panstwowy Instytut Badawczy, IMGW-PIB) in Gdynia. The time series for the lakes cover the years from 1960 to 2018, and for the lagoons – from 1946 to 2018. Three ice parameters were selected for this study: the number of days with ice, the duration of the ice season and the maximum ice thickness for a given winter. Relationships between the selected ice parameters for the studied basins and the MIB were examined using correlation and regression methods.Correlations between the MIB and values of the ice parameters for the lakes and the southern Baltic coastal lagoons do not differ significantly. Considerable differences are observed amongst the correlation coefficients for individual ice parameters and the MIB.Larger differences are found in relationships between the values of individual ice parameters in the sheltered basins and the MIB. The strongest correlation with the MIB is observed for the maximum ice thickness and the number of days with ice.

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The conditions of first ice formation in the Polish coastal zone of the Baltic

Cited by 3 publications

References 0 publications

Ducks change wintering patterns due to changing climate in the important wintering waters of the Odra River Estuary

Ducks change wintering patterns due to changing climate in the important wintering waters of the Odra River Estuary

Relationships between air temperature and ice conditions on the southern Baltic coastal lakes in the context of climate change

Relationships between the Baltic Sea ice extent and ice parameters in the sheltered basins of the southern Baltic coast

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