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Tytuł:
Testate Amoebae as Proxy for Water Level Changes in a Brackish Tidal Marsh
Autorzy:
Ooms, Marijke
Beyens, Louis
Temmerman, Stijn
Powiązania:
https://bibliotekanauki.pl/articles/763455.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Testate amoebae, elevation, sea-level change, water-level change, estuary
Opis:
Few studies have examined testate amoebae assemblages of estuarine tidal marshes. This study investigates the possibility of using soil testate amoebae assemblages of a brackish tidal marsh (Scheldt estuary, Belgium) as a proxy for water level changes. On the marsh surface an elevation gradient is sampled to be analyzed for testate amoebae assemblages and sediment characteristics. Further, vegetation, flooding frequency and soil conductivity have been taken into account to explain the testate amoebae species variation. The data reveal that testate amoebae are not able to establish assemblages at the brackish tidal marsh part with flooding frequencies equal to or higher than 36.5%. Further, two separate testate amoebae zones are distinguished based on cluster analysis. The lower zone’s testate amoebae species composition is influenced by the flooding frequency (~ elevation) and particle size, while the species variability in the higher zone is related to the organic content of the soil and particle size. These observations suggest that the ecological meaning of elevation shifts over its range on the brackish tidal marsh Testate amoeba assemblages in such a brackish habitat show thus a vertical zonation (RMSEP: 0.19 m) that is comparable to the vertical zonation of testate amoebae and other protists on freshwater tidal marshes and salt marshes.
Źródło:
Acta Protozoologica; 2012, 51, 3
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tree stumps from the bottom of the Vistula Lagoon as indicators of water level changes in the Southern Baltic during the Late Holocene
Autorzy:
Leczynski, L.
Miotk-Szpiganowicz, G.
Zachowicz, J.
Uscinowicz, S.
Krapiec, M.
Powiązania:
https://bibliotekanauki.pl/articles/47624.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
tree stump
bottom
palynological analysis
Vistula Lagoon
Baltic Sea
Gdansk Gulf
water level change
Late Holocene
Opis:
The Vistula Lagoon is situated along the south-eastern shore of the Gulf of Gdańsk and is linked with the gulf through the Strait of Baltiysk. Separated from the open sea by the Vistula Spit, the Vistula Lagoon is a shallow body of water with a mean depth of 3 m; the bottom is covered with a layer of mud several metres thick. This article presents a unique, newly discovered locality of tree stumps occurring in situ at the bottom of the Vistula Lagoon. The radiocarbon age of the alder stumps and the top of the peat in which they are rooted is Subboreal. The alder wood was dated to 4770±35 and 3295±35 years BP. The top layers of peat were dated to 4670±40, 4410±35 and 3690±35 years BP. The considerable scatter of the dates indicates the significance of erosional processes during marine transgressions. Radiocarbon dates and pollen analyses indicate that in the late Atlantic – early Subboreal periods, the water level of the Vistula Lagoon was about 3 m lower than it is today. The −2 m level was passed no earlier than c. 3500 years ago; the −1 m level was reached around 2000 years ago.
Źródło:
Oceanologia; 2007, 49, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biodiversity of the Arctic Ocean in the face of climate change
Autorzy:
Weslawski, J.M.
Powiązania:
https://bibliotekanauki.pl/articles/11979.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biodiversity
Arctic Ocean
climate change
global climate change
Arctic sea
aquatic ecosystem
Arctic environment
sea water
water temperature
salinity level
Opis:
Global climate changes which has been observed over the recent years affects organisms occurring in the Arctic seas and the functioning of the whole maritime ecosystems there. The research note presents and briefly analyses the biological diversity of the Arctic Ocean and the most important factors which change the relations between organisms and the environment in the Arctic.
Źródło:
Papers on Global Change; 2011, 18
2300-8121
1730-802X
Pojawia się w:
Papers on Global Change
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of a change in the load on the embankment crown on water level fluctuations inside the body
Autorzy:
Cholewa, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/292869.pdf
Data publikacji:
2020
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
embankment model
filtration
medium size filtration apparatus
modulus of elasticity
water level fluctuations
Opis:
The aim of the study was to determine the influence of the load on the water accumulation embankment crown on changes in the course of the filtration curve in its body. The study was carried out with a medium-size filtration apparatus. We made a model of hydrotechnical embankment with the following dimensions. Width: base 2.0 m, crown 0.5 m. Slope inclination: waterside 1:1.5, landside 1:1. Embankment height 0.6 m, width 1.0 m, weight 900 kg. The construction material included a homogeneous mineral subsoil classified as silty medium sand (siMSa). The embankment model made in a medium-size apparatus kept the accumulation level at a height of 0.5 m. With data from the recording systems, we determined the course of the filtration curve. Next, we kept on loading and relieving the embankment crown using an actuator and a VSS plate with a diameter of 300 mm. During this process, we recorded changes in the level of the water table inside the embankment. A decrease in the water table was observed as a result of increased load. Once the load on the embankment crown was reduced, the water level inside the embankment increased. The embankment model built from natural soil works well as a structure that keeps damming water in a continuous manner. The use of drainage in the form of a stone prism at the foot of the landside slope allows protecting the slope against the negative influence of filtration (piping, liquefaction).
Źródło:
Journal of Water and Land Development; 2020, 46; 38-44
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water relations during two hydrological years in swampy areas in the Siemianice Forest Experimental Station
Autorzy:
Krysztofiak, A.T.
Miler, A.T.
Powiązania:
https://bibliotekanauki.pl/articles/62494.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
water relation
hydrology
swamp area
Siemianice Forest Experimental Station
forest experimental station
ground water level
surface water level
climate change
Marianka Forest District
forest environment
water resource
water condition
Opis:
In recent years researchers have focused increasingly on climatic changes taking place in nature (increasing air temperature, decreasing precipitation totals). These imply changes in components of water balances and in practice changes in water relations both on the global and local scale. At present site overdrying is considered to be the biggest threat [Pierzgalski 2007]. The aim of the study is to present water relations in the forest swampy areas in a forest district (the Marianka Forest District) of the Siemianice Forest Experimental Station in hydrological years of 2005 and 2006. The investigations showed that analysed catchments, despite being located in swampy areas, are characterized by periods of water depletion in ditches. In analysed watercourses runoff was recorded from mid-November 2004 to the beginning of June 2005, while in the next hydrological year it was recorded again from mid-November, but this time longer to mid-June 2006. In relation to ground water of the catchment area a predictable relationship was observed of the water table level at the locations of observation wells. The wells located in the top sections of the catchment had water table the deepest below the ground level, while wells in valleys had water tables at the most shallow levels. It may also be stated that wells situated in higher areas (watershed), are characterized by a slightly bigger variation in the ground water table during the year than it was the case with wells located at lower points (in valleys). Both analyzed hydrological years (2005 and 2006) showed a similar pattern of ground water table at individual sites. Moreover, a marked cyclicity was recorded in the elevation of the water table, i.e. water level rising in autumn and lowering in summer months (as a result of changes in plant transpiration). The relationship of ground water levels with different forest sites found in the analyzed catchments confirms the dependence on the site moisture level variant. Water was lying at the most shallow levels in the ash-alder swamp forest site – a marshy site, while it was markedly the deepest in fresh mixed coniferous forest sites – a fresh site type. When analyzing changes in the ground water levels in terms of stand age classes we may clearly observe the seasonal variation and similar patterns of changes. Water lay the most shallow in stands of age classes V and VI. The level was significantly deepest in age class IV. The above dependencies pertained both to the hydrological year 2005 and 2006.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2008, 06
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Last two millennia water level changes of the Młynek Lake (northern Poland) inferred from diatoms and chrysophyte cysts record
Autorzy:
Zalat, Abdelfattah
Welc, Fabian
Nitychoruk, Jerzy
Marks, Leszek
Chodyka, Marta
Zbucki, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2025243.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Diatoms
chrysophyte
environment
water level
climate change
Młynek Lake
Polska
Opis:
A sediment core, 350 cm long recovered from Młynek Lake, northern of Poland (Warmia and Masuria Region) was analyzed with respect to their content of diatoms and chrysophyte cysts. The aim was to reconstruct the lake water level and climatic changes during the past 2500 years. The recognized diatom assemblages displayed marked floristic changes along the sediment core samples. The main change in diatom composition consists of a shift from an assemblage dominated by benthic Fragilaria sensu lato species through marked intervals to a planktonic one in distinct zones. A high proportion of benthic to plankton taxa has been reported as indicative for a lowering of the lake level with long ice cover in a cold dry climate and a shift from benthic to planktonic diatom taxa reflects arising water level with longest growing season and reduced ice cover on the lake during a warm wet climate. Multivariate statistical analysis included hierarchical ascending clustering distinguished four diatom ecological groups. The analyzed core section was divided into 11 diatom zones according to a distribution of ecological groups and variation in abundance of dominant species supported by 14C data. The results displayed a developmental history of the Młynek Lake that can be divided into 6 main phases of alternating warm wet and cold dry shifts. A distinct dominance of planktonic eutrophic indicator diatoms accompanied by a low abundance of chrysophyte cysts indicates increased lake trophicity and a general trend for the increasing anthropogenic impact.
Źródło:
Studia Quaternaria; 2018, 35; 77-89
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in the quality of water in Brdowskie Lake in 1997-2006
Zmiany jakosci wod Jeziora Brdowskiego w latach 1997-2006
Autorzy:
Staniszewski, R
Szoszkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/16022.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
water quality
lake water
Lake Brdowskie
qualitative change
quality indicator
phosphorus
Wielkopolska region
water level fluctuation
Opis:
Most lakes in Poland are shallow and vulnerable to degradation mostly due to lake morphology and landscape structure. Other factors, like discharged sewage, internal loading and human activities in the watershed are also important. During studies on Brdowskie Lake, water samples were taken twice a year (spring and summer season) from the surface layer and analyses of soluble reactive phosphates, total phosphorus, nitrates, conductivity, five-day biochemical oxygen demand, chlorophyll a, dry mass of seston and Secchi depth were undertaken. Brdowskie Lake is situated in Kujawskie Lakeland and its catchment basin covers about 155.3 km2. The littoral vegetation is dominated by reed bed with a minor presence of other taxa. The lake is very susceptible to degradation (morphology, agricultural lands, housing) and has several potential sources of pollution, e.g. Noteæ River, a nameless stream and summer houses. In general, water quality of the lake was better during the spring season, especially in terms of chlorophyll a and dry mass of seston concentrations. In 1997- -2006, the level of conductivity was very changeable with the maximum values observed in 1999-2001. Significant correlations between some parameters in certain seasons of the year were found, e.g. between chlorophyll a and Secchi depth during spring and total phosphorus and phosphates in summer. The impact of water level fluctuations on water quality parameters, like total phosphorus and chlorophyll a was observed. According to the results, the quality water in Brdowskie Lake is improving. After a biological wastewater treatment plant in the catchment had opened, the rate of salts flowing into the lake with sewage was reduced.
Większość jezior w Polsce to jeziora płytkie i podatne na degradację. Jej głównym powodem są na ogół morfologia zbiorników oraz niekorzystna struktura użytkowania zlewni. Inne czynniki, takie jak dopływ ścieków, ładunek wewnętrzny i działalność gospodarcza, mają również istotne znaczenie. Podczas badań Jez. Brdowskiego próby wody pobierano 2 razy w roku (wiosną i jesienią) z warstwy powierzchniowej i wykonywano oznaczenia takich wskaźników, jak: fosfor reaktywny, fosfor ogólny, azot azotanowy, przewodność elektrolityczna właściwa, pięciodobowe zapotrzebowanie tlenu, chlorofil a, sucha masa sestonu i widzialność krążka Secchi’ego. Jezioro Brdowskie usytuowane na Pojezierzu Kujawskim ma zlewnię o pow. ok. 155,3 km2. Litoral zdominowała trzcina, a udział innych taksonów roślin jest mały. Akwen bardzo podatny na degradację (warunki morfologiczne, duży udział terenów wykorzystywanych rolniczo, zabudowania wiejskie) ma wiele potencjalnych źródeł zanieczyszczenia wody, jak np. rzeka Noteć, ciek bez nazwy, domki letniskowe z nieuregulowaną gospodarką wodnościekową oraz pobliskie zabudowania wiejskie. Zazwyczaj jakość wody była wyższa na wiosnę, szczególnie odnośnie do stężeń chlorofilu a oraz suchej masy sestonu. W latach 1997-2006 poziom przewodności elektrolitycznej był bardzo zmienny, a maksimum przypadało na lata 1999-2001. Stwierdzono istotne korelacje między niektórymi wskaźnikami w zależności od pory roku, jak w przypadku chlorofilu a i widzialności krążka Secchi’ego wiosną i fosforu ogólnego i fosforanów rozpuszczonych latem. Zaobserwowano wpływ wahań poziomu lustra wody na niektóre wskaźniki jakości (fosfor ogólny, chlorofil a). Uzyskane wyniki świadczą o poprawie jakości wód Jez. Brdowskiego. Po uruchomieniu oczyszczalni ścieków w Poloniszu obniżył się np. poziom przewodności elektrolitycznej, co świadczy o ograniczeniu dopływu różnych soli do wód akwenu.
Źródło:
Journal of Elementology; 2010, 15, 4; 705-712
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Long term water level and surface temperature changes in the lagoons of the Southern and Eastern Baltic
Autorzy:
Dailidiene, I.
Baudler, H.
Chubarenko, B.
Navrotskaya, S.
Powiązania:
https://bibliotekanauki.pl/articles/47846.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
climate change
coastal lagoon
Curonian Lagoon
erosion
lagoon
linear regression
long-term variation
sea surface temperature
variability
Vistula Lagoon
water level
Źródło:
Oceanologia; 2011, 53, (1-TI)
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of wind climate changes on the mean sea level and current regime in the coastal waters of West Estonia, Baltic Sea
Autorzy:
Suursaar, U.
Kullas, T.
Powiązania:
https://bibliotekanauki.pl/articles/48975.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
hydrodynamic model
coastal water
sea level
Baltic Sea
Estonia
climate change
wind
Opis:
The response of semi-realistic wind speed increase scenarios to the mean sea level and current regime of semi-enclosed sub-basins in the Baltic Sea is studied with a 2D hydrodynamic model. According to the model output of spatial mean sea levels, an increase in the westerly wind component by 2 m s−1 leads, for example, to a mean sea level rise of up to 3 cm in windward locations in the study area. The sea level change patterns depend on the wind scenario and coastline configuration. The increases in wind speed considered here also lead to enhanced water exchange through the straits, strengthening of the basin-scale circulation, enhancement of up- and downwelling, and increased bottom stresses near coasts.
Źródło:
Oceanologia; 2006, 48, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Future sea level change: a transboundary problem in the baltic sea region? - seareg case study area Gdańsk
Autorzy:
Staudt, M.
Kordalski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1185874.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
podnoszenie się poziomu morza
zmiany klimatu
modelowanie klimatu
zaopatrzenie w wodę
GIS
planowanie przestrzenne
region gdański
Morze Bałtyckie
sea level rise
climate change
climate modelling
water supply
spatial planning
Gdańsk region
Baltic Sea
Opis:
Projekt "Sea Level Change Affecting the Spatial Development of the Baltic Sea Region" SEAREG, unijnego programu Interreg IIIB porusza społeczno-ekonomiczne i środowiskowe skutki zmian klimatu w regionie Morza Bałtyckiego (BSR), w szczególności związane z podnoszeniem się poziomu morza oraz zmianami odpływu z sieci rzecznej. Te dwa czynniki mogą prowadzić do wystąpienia katastrofalnych w skutkach powodzi, wpływających bezpośrednio na zagospodarowanie przestrzenne miast, jak również na zrównoważony rozwój całego regionu Morza Bałtyckiego. Jednym z miejsc objętych szczegółowym rozpoznaniem w ramach projektu był Gdańsk. W obrębie miasta na nisko położonych obszarach tarasu nadmorskiego i Żuław Wiślanych zlokalizowane są ujęcia wód podziemnych, ważne dla zaopatrzenia w wodę do picia i na potrzeby gospodarcze. Dla Gdańska strefy zagrożone powodzią i podtopieniami zostały wyznaczone przy pomocy oprogramowania GIS, z wykorzystaniem wysoko rozdzielczych regionalnych modeli oceanograficznych, modeli powierzchni terenu i planów zagospodarowania przestrzennego. Opracowano 3 scenariusze, według których poziom morza w ciągu następnych 100 lat wzrośnie w rejonie Gdańska odpowiednio o 0,03, 0,48 i 0,97 m.
Źródło:
Polish Geological Institute Special Papers; 2005, 18; 86-92
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of the change of river channel geometry on the size and range of backwater from the receiving body
Autorzy:
Mokrzycka, A.
Powiązania:
https://bibliotekanauki.pl/articles/360781.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
backwater
backwater range
river water level rise
depth
Opis:
This study is an analysis of the possibility of harnessing backwater in open river channels to create waterways in the area of the river mouth. To accomplish this, simplified methods of analysing non-uniform flow have been assessed, with the use of Rühlmann’s, Tolkmitt’s and Bresse’s equations. It was demonstrated that Bresse’s method is the best of the three – the results obtained by using it to determine the range of backwater from the receiving body are much closer to true values than for the other two, and it is the only method that meets the physical criterion of backwater size with the boundary condition of Chezy depth tending to 0. The carried out analyses demonstrated that it is possible to create high-class waterways in lower reaches of rivers by modifying the geometry of their channels, namely the depth and slope of their bottom.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 33 (105); 69-74
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigating the recent drought effects on underground water resources in the province of Kurdistan from a quantitative and qualitative point of view (Case study: Dehgolan and Ghorveh plains)
Autorzy:
Bashiri, E.
Bashiri, J.
Karimi, F.
Powiązania:
https://bibliotekanauki.pl/articles/11333.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
drought effect
underground water
water resource
Kurdistan region
Dehgolan plain
Ghorveh plain
climate change
water level fluctuation
hydrology
deposit type
hydrochemistry
Opis:
The Ghorveh plain with an annual average rainfall of 350 millimeter and a cold and semi humid climate is located between the Dehgolan's watersheds and Chahardoli and 95 kilometers east of Sanandaj and northwest of Hamadan. From a geographic coordinates point of view it is situated between the longitudes of 47° 38' 52" to 48° 06' 03" eastern and latitudes of 35° 02' 22" to 35° 30' 54" northern . This plain leads to Mts. Darvazeh and Ebrahim Attar from south, it leads to hillside lands from the northern side , from Westside it reaches Mt. Bikheir and from the eastern part it is limited to the Dam Gaz heights. The area of the Ghorveh watershed is 1063/50 square kilometers while the area of the region under study is 197 square kilometers. Geologically speaking, it is located in the Sanadaj –Sirjan zone. The collision depth to the underground waters in the heights range bordering the plain is a maximum of 42 meters while the same rate about the river Talvar is at least zero and it is less than 5 meters in a wide range region of the eastern side of the plain. The direction of the underground water flow in the Ghorveh region is from the south west to north east. The Piezometrical water level changes compared to the western side plain has had a reduced height.The Dehgolan's plain with an annual average rainfall of 354 millimeters and a cold and semi humid climate is located in the eastern side of the city of Sanandaj between the longitudes of 47° 08' 00" to 48° 12' 00" eastern and latitudes of 35° 00' 00" to 36° 00'00" northern. This plain is limited to not very high ridge of Shanooreh from the eastern side and it leads to the Darband Kabood heights and Abdulrahman heights from south, while it leads to Mt. Sheida and Akhikamal and Salarabad from north and then it is limited to the Khatoon heights from the west part . The area of the watershed of Dehgolan is 2250 square kilometer and the area of the region under study is 644 square kilometers . Geologically and regionally speaking, it is part of the geological – structural zone of Sanandaj – Sirjan. The general slope of the region is towards east and north east. The main river of this plain is called Talvar. The alluvial aquifer of the Dehgolan's plain is of a free type and is on average 90meters thick where in some parts thickness swells to 90 meters.
Źródło:
International Letters of Natural Sciences; 2013, 03
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coastal zone, key area for adaptation to sea level rise. The Gulf of Gdansk case
Autorzy:
Zielinski, Tymon
Piwowarczyk, Joanna
Koroza, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/28411662.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
adaptation to climate change
coastal zone
developmental strategy
Gulf of Gdansk
sea level rise
Opis:
Climate change and its consequences, including rising ocean temperature and sea level rise are well scientifically documented. The changes are especially severe for coastal communities, which are estimated to have reached c. 50% of the world’s population. Using an example of the Gulf of Gdansk region, which is of European importance, due to the presence of two major Baltic ports and global tourism, we explore, how sea related threats may affect the region and we analyse how the three major cities are prepared to these threats. The four city developmental strategies and an additional document, an “umbrella strategy” focusing on climate change threats do not consider sea level rise and more frequent storm surges as threats. The sea level rise is briefly discussed in the fourth document. The adaptation plan, an appendix to the document, mentions sea level rise, but the discussion of the problem is indirect and involves some examples of adaptation actions in loosely similar environmental conditions. The adaptation plan, in fact includes a list of possible threats, rather than a detailed discussion of the suggestions of the measures to be undertaken. For comparison, we present a multilevel approach, which is effectively run in the Port of Rotterdam and argue that such approach should be undertaken in the studied region. We conclude that despite years of education on climate change, the problem is still not recognised and is underrepresented in practical measures of the studied region. We also provide hints on how to overcome this situation.
Źródło:
Journal of Water and Land Development; 2023, 59; 208--215
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal patterns of free proline and carbohydrate levels in cherry laurel (Prunus laurocerasus) and ivy (Hederea helix) leaves and resistance to freezing and water deficit
Autorzy:
Bandurska, H
Plachta, M.
Woszczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/41593.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
evergreen shrub
woody plant
seasonal change
temperature
climate
water-soluble carbohydrate
proline
free proline
carbohydrate level
leaf
cherry laurel
Prunus laurocerasus
ivy
Hedera helix
freezing resistance
water deficit
resistance
Opis:
Seasonal changes in the levels of water-soluble carbohydrates, free proline and tolerance to freezing and water deficit were studied in leaves of cherry laurel (Prunus laurocerasus) and ivy (Hedera helix). Frost and water deficit tolerance was estimated based on the measurement of electrical conductivity of aqueous media containing leaf discs that were previously treated with frost (–7°C) or polyethylene glycol solution (PEG 600), respectively. Carbohydrate content in leaves of examined species changed differently throughout the measurement period. In laurel leaves the highest carbohydrate level was found in February, while it was lowest in June. In contrast, in ivy leaves the highest carbohydrate content was recorded during summer (June, July), while the lowest in February. However, a lack of correlation between soluble carbohydrate level and membrane injury index was shown in this study. Free proline content in leaves of investigated species was the highest in early spring, i.e. April. The lowest level of free proline in laurel leaves was found in July, September and October, but in ivy from July to February. A negative correlation between proline content and membrane injury index observed in frost and PEG treated leaves of both species suggest that this amino acid may have resulted on membrane protection.
Źródło:
Dendrobiology; 2009, 62; 3-9
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrological background of the dune slack vegetation in the Kiskunság
Tlo hydrologiczne roslinnosci obnizen miedzywydmowych obszaru Kiskunsag
Autorzy:
Margoczi, K.
Szanyi, J.
Aradi, E.
Busa-Fekete, B.
Powiązania:
https://bibliotekanauki.pl/articles/81707.pdf
Data publikacji:
2007
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
hydrology
dune slack vegetation
hydrological condition
Kiskunsag area
meadow
ground water level
vegetation change
hydraulic flow system
Opis:
In the southern Kiskunság the natural vegetation (sand steppe, fen meadow, fen or marsh and alkali vegetation) survived in the dune slack meadows (DSM). The vegetation of these meadows are species rich, and has high natural value. The main goal of this study is to reveal the hydrological backgrounds in order to help conservation of the natural values. Two DSM was investigated (MM and CS site): vegetation was sampled, observation wells were planted, and data of other wells in similar position were used to describe the hydrological background of the vegetation. The characteristic groundwater level of the same vegetation type in the relatively wet 2005 year was higher in MM site, than in the CS site. We suppose, that this is a consequence of the earlier vegetation change because of the strong decrease of groundwater level in the region of MM site. The model of hydraulic fl ow system showed that the DSMs are situated in hydraulic discharge zones. We suppose, that an upward fl ow plays an important role in development of alkali vegetation in the CS site. Cross-correlation coeffi cient between groundwater and previous precipitation indicated a quick infi ltration of rainwater into the soil, and a pressure front of the groundwater stream reaching the area of well after 22–23 days after rainfall. The quick and strong regional hydrological changes, especially the decrease of groundwater level would endanger this valuable vegetation, but certain resistance and plasticity of it is rather possible.
W południowej części obszaru Kiskunság roślinność naturalna (stepu piaszczystego, łąk bagiennych, torfowisk niskich lub mokradeł mineralnych oraz roślinność alkaliczna) zachowała się na łąkach w obniżeniach międzywydmowych (dune slack meadows DSM). Roślinność tych łąk charakteryzuje się dużą bioróżnorodnością oraz wysokimi wartościami przyrodniczymi. Głównym celem poniższego opracowania jest poznanie i określenie warunków hydrologicznych, tak aby wspomóc działania służące ochronie wartości przyrodniczych na tym obszarze. Badania terenowe przeprowadzono na dwóch obszarach łąk obniżeń międzywydmowych (obszary oznaczone MM i CS). Zakres badań obejmował określenie składu gatunkowego roślinności, instalacje studni (piezometrów) wód gruntowych. Dodatkowo wykorzystano dane z istniejących studni wód gruntowych, zlokalizowanych w analogicznych warunkach, w celu określenia tła hydrologicznego dla znajdującej się na tych obszarach roślinności. Charakterystyczne wartości położenia zwierciadła wód gruntowych dla tych samych typów roślinności w 2005 roku, który był stosunkowo wilgotny, były wyższe w przypadku obszaru MM niż dla obszaru CS. Przypuszczalnie jest to wynikiem wcześniejszych zmian roślinności spowodowanych wyraźnym spadkiem położenia zwierciadła wód gruntowych w regionie, w którym znajduje się obszar MM. Analiza wyników modelu hydraulicznego sytemu wód gruntowych wskazuje, iż obydwa obszary badawcze znajdują się strefach drenażu wód gruntowych. Sądzimy, że taki wznoszący ruch wody odgrywa istotną rolę w rozwoju roślinności alkalicznej w obszarze CS. Współczynnik korelacji pomiędzy stanami wód gruntowych a opadami poprzedzającymi wskazuje na szybką infi ltrację wód opadowych w głąb profi lu glebowego, oraz na docieranie wód opadowych na obszar lokalizacji studni wód gruntowych po okresie 22–23 dni od chwili wystąpienia opadu. Szybkie i wyraźne regionalne zmiany hydrologiczne, a w szczególności spadek położenia zwierciadła wód gruntowych, mogą stanowić zagrożenie dla wartościowych typów roślinności na tym obszarze. Jednakże, występująca tutaj roślinność charakteryzuje się również pewnym potencjałem odporności i przystosowania się do ewentualnych zmian o takim charakterze.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation; 2007, 38; 105-113
0208-5771
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 18

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