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Microphytobenthic primary production along a non-tidal sandy beach gradient: an annual study from the Baltic Sea

100%

Urban-Malinga B., Wiktor J.

Oceanologia

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2003

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tom 45

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nr 4

The microphytobenthic primary production and chlorophyll a content were studied over the annual cycle (May 1998 – May 1999) on a non-tidal Baltic sandy beach at three stations along the beach gradient: littoral, waterline and splash zone. The chlorophyll a concentrations varied between 0.88 and 12.18 μg cm−3. Net and gross primary production rates respectively lay within the ranges 0.1–31.4 mgC m−2 h−1 and 0.2–41.8 mgC m−2 h−1. The highest values of both Chl a content and primary production were noted at the littoral station, the lowest ones at the waterline. The mean annual P/B ratio was highest at the waterline. The differences in Chl a content between stations were statistically significant and may be related to water dynamics, resuspension and water content. Production rates were highly variable on monthly time scales, and the highest results at all the study locations were noted in July. The gross photosynthetic rates were significantly correlated with water temperature.

2

The biochemical composition of sedimentary organic matter in sandy beaches of various anthropopressure

86%

Trojanowski J., Bigus K.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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2013

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tom 17

Beach sediments from two beaches at the Polish coast of the Baltic Sea were collected and analyzed. The sediments were collected in two seasons – winter and summer – at two stations, depending on the influence of the sea water on the examined sediments. At each station, surface sediments (0-5 cm) were collected as well as sediments at the depth of 10-15 cm. The results of the conducted tests reveal, that anthropopressure, the depth where the collected sediments were taken and the direct influence of the sea water on the sediments have impact on the chemical composition of beach sediments and their food quality for the inhabiting psammon. The conducted tests disclose that there is more organic matter and its labile forms in the sediments originating from Ustka. Strong anthropogenic pressure found at the beach in Ustka also contributes to higher concentration of uncharacterized fraction of organic carbon in the area. Analyzing alimentary usefulness of the organic matter there, it seems to be higher at the beach in Czołpino.

3

Circulation of groundwater due to wave set-up on a permeable beach

86%

Massel S. R.

Oceanologia

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2001

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tom 43

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nr 3

279-290

Sandy beaches are highly exploited but very dynamic and fragile environments. Driven by waves, the water flow through the beach body is able to transport oxygen, and hence help to maintain biological activity in the porous media. The paper presents a theoretical attempt to predict the groundwater circulation due to wave set-up. Two systems of circulations have been discovered, related to two different gradients of the set-up height. For the offshore gradient, the horizontal excess pressure gradient induces flow in the offshore direction. However, closer to the shore, the pressure gradient is reversed and the resulting flow moves shorewards.

4

Faunistic diversity of Maltese pocket sandy and shingle beaches: are these of conservation value?

86%

Gauci M. J., Deidun A., Schembri P. J.

Oceanologia

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2005

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tom 47

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nr 2

The littoral fauna of Maltese sandy and shingle beaches is generally regarded as impoverished and consequently of little conservation interest. The fauna of three sandy and three shingle beaches was systematically sampled by coring, standardised searching and pitfall traps. Diversity and population density were highest at the surface for sandy beaches, but were highest below the surface for shingle. The two beach types had distinct suites of species and individual beaches were faunistically distinct. Maltese sandy and shingle beaches are of conservation importance for their habitat-restricted species, some of which have limited local and regional distributions, and are internationally protected.

5

Species - area relationships for sandy beach macrobenthos in the context of intertidal width

86%

McLachlan A., Dorvlo A.

Oceanologia

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2007

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tom 49

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nr 1

The marine species richness (MSR) recorded in 159 sandy beach surveys was analysed in relation to beach width (W). MSR is the number of macrobenthic species collected in a standard intertidal transect survey, excluding insects. Beach width (W) was estimated by dividing the spring tide range [m] by the beach face slope, to give a value in [m]. The relationship between MSR and W was best described by a semilog (exponential) model, which was highly significant: MSR = −5.2+ 10.8 logW. The fit of a power model (MSR = cWz) was also significant. The steep slope of the curve for a power model (z = 0.49) suggests that beaches function as isolated rather than contiguous habitats and that the nature of the habitat becomes more benign as beaches widen. There are some latitudinal effects, with tropical beaches displaying a higher species-area relationship for any beach width than other regions.

6

Predrying of stranded wrack material as an aspect of the litterbag techniques in the sandy beach studies

86%

Jedrzejczak M. F.

Oceanological and Hydrobiological Studies

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2003

|

tom 32

|

nr 1

7

Interstitial community oxygen consumption in a Baltic sandy beach: horizontal zonation

86%

Urban-Malinga B., Opalinski K. W.

Oceanologia

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2001

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tom 43

|

nr 4

The oxygen consumption of a sandy beach interstitial community was determined on four occasions (January, May, August, October) on the Gulf of Gdańsk (southern Baltic Sea). The study was carried out at four locations on the beach slope (littoral, waterline, splash zone and middle beach). Oxygen consumption varied from 158–159 cm3 O2 m−2 h−1 at the underwater site and waterline to 20–36 cm3 O2 m−2 h−1 in the middle beach. According to these data, interstitial organisms are able to utilize from 206 to 1641 mg of organic carbon per square metre per day. In general, metabolic activity decreased gradually from the waterline towards the middle beach, and a significant correlation was found between oxygen consumption and sediment water content. Changes in oxygen consumption on the beach slope were statistically significant.

8

Attenuation of wave-induced groundwater pressure in shallow water. Part 2. Theory

86%

Massel S. R., Przyborska A., Przyborski M.

Oceanologia

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2005

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tom 47

|

nr 3

9

Physiological properties of bacteria inhabiting polluted and unpolluted marine sandy beaches [Southern Baltic Sea]

86%

Podgorska B., Mudryk Z. J.

Polish Journal of Ecology

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2007

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tom 55

|

nr 1

The occurrence of bacteria displaying particular physiological properties was studied in polluted (Sopot) and unpolluted (Czołpino) marine sandy beaches (southern Baltic Sea). All eight isolated physiological groups of bacteria were much more numerous in polluted than in unpolluted beach. In polluted beach, bacteria hydrolyzing uric acid (32.5 cells 103 g–1 dry w. of sand) and ammonifying bacteria (32.3 cells 103 g–1 dry w. of sand) were the most numerous, while nitrifying bacteria were the least numerous (0.014 cells 103 g–1 dry w. of sand). In unpolluted beach, bacteria hydrolyzing uric acid (0.66 cells 103 g–1 dry w. of sand) and reducing methylene blue (0.18 cells 103 g–1 dry w. of sand) were the most numerous, while no bacteria producing hydrogen sulphide from organic compounds or bacteria decomposing urea were isolated. In both beaches, considerable differentiation in the distribution of physiological groups of bacteria was found in a horizontal profile i.e. from the waterline to the middle of beach (~60 m). Data concerning horizontal distribution of the physiological groups of bacteria in the sand of the polluted beach show that the majority of those groups was most numerous in the dune. No clear regularity in the distribution of physiological groups of bacteria was found in the horizontal profile of the unpolluted beach. Results of the present study indicate differences in the distribution of the physiological groups of bacteria in the surface (0–5 cm) and subsurface (5–10 cm) sand layers. Generally, in both studied beaches all physiological groups of bacteria were much more numerous in the surface than in the subsurface sand layer. The exception were bacteria reducing sulphates which in the polluted beach were most numerous at the depth of 5–10 cm.

10

Trophodynamic variations on microtidal North Mediterranean sandy beaches

86%

Vassallo P., Fabiano M.

Oceanologia

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2005

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tom 47

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nr 3

Trophic models of the micro and meiobenthic community of six sandy beaches on the Ligurian coast (north-western Mediterranean Sea) have been performed to assess variations in structure and function of the ecosystem. A novel approach based on the determination of the feeding predisposition of the benthic community revealed that there is a significant shift in the trophodynamics of the system with respect to environmental constraints. Along an emerged-submerged gradient the benthic community displayed a clear trend from a fundamentally detritusdependent structure to an autotrophic, more balanced and diversified one. The trends analysed focus on the importance of the swash zone as a transitional area between the land and the sea that is characterised by a high diversity and activity of the trophic network.

11

Overwintering site of the sandhopper Talorchestia deshayesii (Crustacea, Amphipoda) (Audouin, 1826) and the structure of the overwintering population

72%

Koziel M.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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2007

|

tom 11

This study on the Talorchestia deshayesii population was conducted on the Puck Bay beach in Jurata located on the Hel Peninsula. An attempt was made to locate the overwintering site of this species and also to investigate the composition of the population while in anabiosis. Series of holes were made in the substrate, and the overwintering site of Talorchestia deshayesii in the Puck Bay was located. The abundance and size structure of the population was also determined.

12

A spatial model of sedimentation of a sandy beach of a non-tidal sea, southern coast of the Baltic Sea

72%

Borowka M.

Quaestiones Geographicae

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1989-1990

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tom 15-16

13

Distribution and abundance of microflora in sandy beaches on the Southern coast of the Baltic Sea

72%

Mudryk Z. J., Perlinski P., Skorczewski P., Wielgat M., Zdanowicz M.

Oceanological and Hydrobiological Studies

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2013

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tom 42

|

nr 3

14

Monitoring of sandy beach meiofaunal assemblages and sediments after the 2004 tsunami in Thailand

72%

Grzelak K., Kotwicki L., Szczucinski W.

Polish Journal of Environmental Studies

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2009

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tom 18

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nr 1

43-51

Three sandy beaches on Phuket and Kho Khao islands, Thailand, were monitored annually to study the short- and long-term impacts of the 2004 tsunami on their meiofauna assemblages and sediment characteristics. The sediment grain size compositions changed significantly within one year after the tsunami (improved sorting and less negatively skewed distributions), but meiofauna assemblages did not. The fast recolonization of the beaches after the tsunami confirmed that meiofauna is highly resilient to ecosystem disturbances. The tsunami was not observed to have a long-term impact on meiofaunal assemblages.

15

Sandy coastlines - are there conflicts between recreation and natural values?

72%

Weslawski J. M., Urban-Malinga B., Kotwicki L., Opalinski K., Szymelfenig M., Dutkowski M.

Oceanological Studies

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2000

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tom 29

|

nr 2

16

Zonation of macrofauna across sandy beaches and surf zones along the Dutch coast

72%

Janssen G., Mulder S.

Oceanologia

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2005

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tom 47

|

nr 2

On nine beaches and two transects in the surf zone along the Dutch coast the presence of benthic macrofauna was studied in relation to basic abiotic characteristics. According to Short’s classification system, Dutch beaches are mesotidal and dissipative (Ω = 8.6), and the RTR is low (1.52–1.27), which means that they are not tide-dominated. BSI ranged from 1.4 to 1.1 for the northern and western Dutch coasts respectively and had an overall value of 1.2. The rates of exposure of the beaches varied between 8 and 12, and are therefore regarded as sheltered to moderately exposed. The Dutch beaches display a geographical trend in beach types. Those of the Wadden Sea islands in the northern part of the Netherlands are dissipative, flat, fine-grained, and host high densities of many species of benthic macrofauna. The beaches along the western Dutch coast are less dissipative, steeper, with a higher mean grain size; the species diversity and abundance there are lower. Species diversity and abundance on the beaches increase from the high- to the low-water line. The maximum number of species was found between 0 and –1 m relative to the mean tidal level. The abundance peaks just above the mean tidal level, while the biomass reaches a maximum at the mean tidal level. Species diversity and abundance are low in the surf zone, but increase towards deeper water. Species numbers are high and the abundance is very high in the trough between the two bars. The relation between the diversity and abundance of macrobenthic species on the one hand, and the sediment composition, water column depth, and position between the bars on the other show a clear pattern of zonation for the beach, surf zone and near-shore: (1) a supralittoral zone with insects and air-breathing crustaceans, (2) a midshore zone, with intertidal species, (3) a lower shore zone, whose species extend into the shallow surf zone, and (4) a zone of sublittoral fauna in the trough between the two breaker bars within the surf zone.

17

Culturable microorganisms in sandy beaches in South Baltic Sea

72%

Mudryk Z. J., Podgorska B.

Polish Journal of Ecology

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2007

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tom 55

|

nr 2

The abundance of culturable heterotrophic microorganisms (bacteria, fungi, yeasts, actinomycetes) and their spatial and vertical variability were studied in marine-bay (“Sopot”) and open-sea (“Czołpino”) sandy beaches (southern Baltic Sea). Among studied microorganisms, halotolerant (13.4 – 308.4 × 10³ CFU g⁻¹ dry wt. of sand) and limnotolerant (7.4 – 69.2 × 10³ CFU g⁻¹ dry wt. of sand) bacteria predominated in the sand of both beaches. Filamentous fungi, yeasts, and actinomycetes constituted only a slight percentage (0.2–3.0%) of all isolated heterotrophic microorganisms. The numbers of all studied microorganisms were much higher on marine-bay beach characterized by a high level of accumulation of organic matter (4.1 mg g⁻¹ dry wt. of sand) than in the sand of the open-sea beach, where the content of organic matter was lower (1.9 mg g⁻¹ dry wt. of sand). There were marked differences in the horizonatal profile distribution of heterotrophic microorganisms inhabiting marine-bay and open-sea beaches. In both studied beaches higher numbers of microorganisms were determined in the surface (0–5 cm) than in subsurface (5–10cm) sand layer.

18

Longshore sediment transport at Golden Sands (Bulgaria)

72%

Nikolov H., Trifonova E., Cherneva Z., Ostrowski R., Skaja M., Szmytkiewicz M.

Oceanologia

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2006

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tom 48

|

nr 3

The paper presents the results of studies on the qualitative and quantitative features of the littoral drift at Golden Sands (Bulgaria), carried out jointly by Polish and Bulgarian researchers. The mathematical modelling of physical coastal processes took wave transformation (wave diffraction and refraction; the effects of shoaling and wave breaking) and longshore sediment transport into account. The computations were carried out for the mean statistical annual wave climate, determined on the basis of IO BAS wave data, simulated using the WAM method from long-term Black Sea wind data. The results of sediment transport computations clearly show that its direction off the Golden Sands shore is from north to south.

19

The degradation of stranded carrion on a Baltic Sea sandy beach

72%

Jedrzejczak M. F.

Oceanological Studies

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1999

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tom 28

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nr 3-4

20

Fine organic particles in a sandy beach system (Puck Bay, Baltic Sea)

72%

Kotwicki L., Weslawski J. M., Szaltynis A., Stasiak A., Kupiec A.

Oceanologia

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2005

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tom 47

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nr 2

A total of over 550 samples of particulate organic matter (POM) were obtained from swash and groundwater samples taken on a monthly basis from seven localities on the sandy shores of Puck Bay in 2002 and 2003. Sandy sediment cores from the swash zone were collected to assess the amount of POM in the pore waters. The mean annual concentrations of POM varied between localities from 20 to 500 mg in groundwater and from 6 to 200 mg dm−3 in swash water. The carbon/nitrogen (C/N) ratio in suspended matter was always higher in groundwater (annual mean 12) than in swash water (annual mean 7). The C/N ratio indicates a local, algal origin of POM in the shallow coastal zone.

Ograniczanie wyników

Microphytobenthic primary production along a non-tidal sandy beach gradient: an annual study from the Baltic Sea

The biochemical composition of sedimentary organic matter in sandy beaches of various anthropopressure

Circulation of groundwater due to wave set-up on a permeable beach

Faunistic diversity of Maltese pocket sandy and shingle beaches: are these of conservation value?

Species - area relationships for sandy beach macrobenthos in the context of intertidal width

Predrying of stranded wrack material as an aspect of the litterbag techniques in the sandy beach studies

Interstitial community oxygen consumption in a Baltic sandy beach: horizontal zonation

Attenuation of wave-induced groundwater pressure in shallow water. Part 2. Theory

Physiological properties of bacteria inhabiting polluted and unpolluted marine sandy beaches [Southern Baltic Sea]

Trophodynamic variations on microtidal North Mediterranean sandy beaches

Overwintering site of the sandhopper Talorchestia deshayesii (Crustacea, Amphipoda) (Audouin, 1826) and the structure of the overwintering population

A spatial model of sedimentation of a sandy beach of a non-tidal sea, southern coast of the Baltic Sea

Distribution and abundance of microflora in sandy beaches on the Southern coast of the Baltic Sea

Monitoring of sandy beach meiofaunal assemblages and sediments after the 2004 tsunami in Thailand

Sandy coastlines - are there conflicts between recreation and natural values?

Zonation of macrofauna across sandy beaches and surf zones along the Dutch coast

Culturable microorganisms in sandy beaches in South Baltic Sea

Longshore sediment transport at Golden Sands (Bulgaria)

The degradation of stranded carrion on a Baltic Sea sandy beach

Fine organic particles in a sandy beach system (Puck Bay, Baltic Sea)