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    Wyświetlanie 1-14 z 14
    Tytuł:
    Holocene climate dynamics in Sumba Strait, Indonesia: a preliminary evidence from high resolution geochemical records and planktonic foraminifera
    Autorzy:
    Putra, Purna Sulastya
    Nugroho, Septriono Hari
    Powiązania:
    https://bibliotekanauki.pl/articles/2024720.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    climate dynamics
    planktonic foraminifera
    Holocene deep-sea sediment
    Sumba Strait
    Opis:
    The dynamics of climatic conditions during the Holocene in the Sumba Strait is not well known, compared with in the Indian Ocean. The aim of this paper is to identify the possible Holocene climate dynamics in Sumba Strait, eastern Indonesia by using deep-sea core sediments. A 243 cm core was taken aboard RV Baruna Jaya VIII during the Ekspedisi Widya Nusantara 2016 cruise. The core was analyzed for elemental, carbonate and organic matter content, and abundance of foraminifera. Based on geochemical and foraminifera data, we were able to identify at least six climatic changes during the Holocene in the Sumba Strait. By using the elemental ratio of terrigenous input parameter, we infer to interpret that the precipitation in the Sumba Strait during the Early Holocene was relatively higher compared with the Mid to Late Holocene.
    Źródło:
    Studia Quaternaria; 2020, 37; 91-99
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Present state of Bulgarian glacierets
    Autorzy:
    Gachev, E.
    Gikov, A.
    Zlatinova, C.
    Blagoev, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/294843.pdf
    Data publikacji:
    2009
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    Pirin Mountains
    glacierets
    inter-annual dynamics
    climate fluctuations
    Opis:
    he present article makes a revision of the recent studies related to Bulgarian glacierets, all located in the northern part of the Pirin Mountains, as well as presents some latest results from field measurements of firn size and morphology descriptions. This has been the first scientific study of Banski suhodol glacieret, which at present is the largest in Bulgaria. Data gained until now indicates differences between the Pirin and the High Tatras concerning the driving factors of glacieret inter-annual dynamics, as for Bulgarian glacierets air temperature appears to be one of the most sufficient controls.
    Źródło:
    Landform Analysis; 2009, 11; 16-24
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Consequences of global warming in cryosphere
    Autorzy:
    Jania, Jacek A.
    Powiązania:
    https://bibliotekanauki.pl/articles/703326.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cryosphere
    climate warming
    sea ice
    glacier dynamics
    sea level rise
    Opis:
    Scale of changes of particular components of cryosphere due to global warming is presented. Cryosphere diminishes its spatial extend and the total volume of all kinds of ice is reduced. The Arctic sea ice cover has recently diminished most intensely. It reached its minimal extend (4.28 mln km2) in September 2007. One expects accelerated disintegration of sea ice of the Arctic as a result of coadjuvancy of oceanic and atmospheric factors. In consequence, more intense warming of climate coming from warmer ocean water is predicted in the Arctic basin. Increase of melting of glaciers during the last three decades results in decrease of their extend and thickness. Additionally, more meltwater is reaching bed of glaciers and is accelerating their flow velocity due to faster basal sliding. Such processes result in more intense breaking off the icebergs from fronts of glaciers terminating into the sea. Dynamic response of Greenland outlet tidewater glaciers has been detected after 2000 and it affects significantly global ocean level rise by ca 0.5 mm/yr. The Antarctic Ice Sheet is actually only insignificantly reacting to global warming. The paper discusses possible scenarios of the consequences of dynamic reaction of the West Antarctic Ice Sheet for increasing warming and slow sea level rise. Permafrost is reacting in a less distinct but detectable scale. The paper is giving not only description of consequences of climate warming for cryosphere, important impact of its spatial extend and features on atmosphere and oceans are considered either. A series of positive feedacks between  warming climate and cryosphere are listed. Described evolution of cryosphere is suggesting that distinct trend of climate warming is irreversible for the next centuries. One can also expect systematic rise of global ocean level as the consequence of glacier melting and dynamic transfer of ice masses based on land to the sea.
    Źródło:
    Nauka; 2008, 3
    1231-8515
    Pojawia się w:
    Nauka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Econometric Analysis of the Impact of Climate Change on the Sustainability of Agricultural Production in Ukraine
    Autorzy:
    Skrypnyk, Andriy
    Zhemoyda, Oleksandr
    Klymenko, Nataliia
    Galaieva, Liudmyla
    Koval, Tatiana
    Powiązania:
    https://bibliotekanauki.pl/articles/1839135.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    global climate change
    acreage dynamics
    climate change
    modeling
    crop pattern
    crop acreage
    panel regression
    time series
    Opis:
    The aim of this paper was to determine the mechanisms of climate change impact on the yield of the main exportoriented crops in the agro-climatic zones of Ukraine. The study of the problem of changing the acreage of the main export-oriented crops was conducted according to the data of the State Statistics Service of Ukraine on the time horizon 2000-2018 in the following order: first, the dynamics of the change of the acreage under corn, sunflower and wheat by the agro-climatic zones of Ukraine was analyzed; secondly, the trends of yield changes of these crops were investigated based on the increase in the difference in yields between the northern and southern zones; and, finally, the temporal and spatial expansion in the area of crop propagation were investigated by applying the panel regression method. The findings obtained indicate that the applied models confirm the assumption of the effects of climate change on crop yield changes and the zones expansion in the northern direction. If the country’s wheat area can be considered stable (variation is insignificant), then the corn and sunflower areas have grown steadily under the influence of increasing demand from national and world markets. At the same time, the growing acreage under corn and sunflower occurred in all climatic zones. Stable expansion of corn crops in the north direction in all three agroclimatic zones of Ukraine has been statistically confirmed. The article presents the findings of empirical analysis, which confirm that if the boundaries of soil and climatic zones change, the conditions of growing crops and their yield will consequently change as well. Thus, based on current global forecasts, the impact of weather on Ukraine’s agriculture will increase, and the most negative effects can be expected in the Steppe zone, where the likelihood of weather and climate risks increases, requiring the development of adaptation and mitigation measures as well as exploitation of new potential opportunities that are being opened. Studies have shown that there is an expansion in crops to the north and a change in their pattern, including a significant increase in the area under corn.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 3; 275-288
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The dynamics of climate elements and land drainage impact on hydrologic conditions in a lakeland blind drainage area
    Przebieg warunków klimatycznych oraz wpływ melioracji wodnych na stosunki wodne pojeziernych obszarów bezodpływowych
    Autorzy:
    Okoński, B.
    Miler, A. T.
    Panfil, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/292745.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    melioracje wodne
    obszary wodno-błotne
    przebieg elementów klimatu
    rozlewisko
    zanik wody powierzchniowej
    dynamics of climate elements
    land drainage
    seepage pond
    surface water decline
    wetland
    Opis:
    The assessment of climate dynamics and the impact of land drainage systems on lakeland blind drainage area was the problem studied in the paper. The research area was located based on relative stability of non-climatic physiographic characteristics and water management practices over a longer time-scale. Thus, the influence of non-climatic factors on water storage could be omitted. The study site was situated in Warmia region in the Dopływ spod Nowej Wsi catchment (27.53 km²). One of local seepage ponds called Bagna Ramuckie within the aforementioned catchment was investigated. The study covered the time period since the first half of the 19th century to the year 2005. The decisive factors affecting processes of increase and decrease of pond water surface area in considered spatial units were the trends of air temperature over the long time scale. It was indicated that natural enlargement of water surface area in the pond occurred after 40-years long period of air temperature decrease and the decline followed 20-year-long period of air temperature rise. Precipitation did not show any trends for long periods but typical cyclic changes of precipitation over a short time-scale. These pluvial cycles stimulated or destimulated processes of water surface changes additionally over short periods. The first episode of water surface decrease in the seepage pond occurred when air temperature rise trend coincided with intensive land drainage and changes in some land management patterns (the 2nd half of the 19th century). Nevertheless, during the 20th century water management practices were rather stable and did not have any impact on rise or decline of seepage pond water surface area.
    W pracy podjęto próbę oceny wpływu elementów klimatu oraz sieci melioracyjnej na stosunki wodne pojeziernych obszarów bezodpływowych. Wybrano obiekt badawczy, w przypadku którego wieloletnią zmienność nieklimatycznych czynników fizyczno-geograficznych na warunki wodne można pominąć. Badane jednostki przestrzenne to zlewnia Dopływu spod Nowej Wsi (27,53 km²) oraz jedno z rozlewisk położone w tej zlewni o nazwie Bagna Ramuckie (obszar Warmii). Rozpatrywano okres od pierwszej połowy XIX w. do 2005 r. Najistotniejszymi czynnikami kształtującymi procesy odbudowy i zaniku wody powierzchniowej były trendy termiczne w dłuższych okresach. Ponowne wystąpienie wody powierzchniowej na rozlewisku w XX w. nastąpiło po ok. 40-letnim okresie spadku temperatury, natomiast zanik - po okresie 20-letniego wzrostu temperatury w połowie lat 90. XX w. Opady w okresach dłuższych nie wykazywały kierunkowych zmian i ze względu na zmienność cykliczną miały dodatkowe znaczenie modulujące w okresach krótkich - stymulujące lub destymulujące proces odbudowy powierzchni lustra wody. Pierwszy epizod redukcji powierzchni lustra wody i jego zaniku na Bagnach Ramuckich można wiązać zarówno z kierunkowymi zmianami temperatury, jak i prowadzonymi wówczas pracami odwodnieniowymi oraz zmianą sposobu gospodarowania w zlewni. W XX w. nieklimatyczne czynniki fizyczno-geograficzne oraz sposób prowadzenia gospodarki wodnomelioracyjnej miały raczej charakter mało zmienny. Dlatego można sądzić, że w tym okresie znaczący wpływ na procesy odbudowy i zaniku powierzchni lustra wody w rozlewisku miała głównie zmienność klimatu.
    Źródło:
    Journal of Water and Land Development; 2009, no. 13a; 225-238
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sycamore maple (Acer pseudoplatanus L.) stands on former agricultural land in the Sudetes – evaluation of ecological value and production potential
    Autorzy:
    Vacek, Stanislav
    Vacek, Zdeněk
    Kalousková, Ivana
    Cukor, Jan
    Bílek, Lukáš
    Moser, W. Keith
    Bulušek, Daniel
    Podrázský, Vilém
    Řeháček, David
    Powiązania:
    https://bibliotekanauki.pl/articles/956977.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    stand structure
    growth dynamics
    production
    climate
    tree-ring analysis
    game damage
    central europe
    Opis:
    Sycamore maple (Acer pseudoplatanus L.) is a fast-growing tree species that produces economically attractive timber, provides ecological services and has high site adaptability, but it is only a minor component of European forests. This paper describes production, structure and diversity of sycamore-dominated forest stands that originated by succession on former agricultural lands in the Orlické hory Mts., the Czech Republic. The partial objectives were to determine impact of climatic factors on the radial growth of sycamore maple and evaluate the effect of game on natural regeneration. The number of sycamore seeds on the ground was on average 9–34 seeds m–2 and seedling mortality reached on average 89% caused by damage of hare and drought. Density of natural regeneration ranged from 1,532 to 4,244 recruits ha–1, but growth dynamic was strongly influenced by ungulate browsing (69%) with the largest losses in sycamore (96%). Analyses of climatic effects showed a significantly close relationship with growth of sycamore in submontane areas, being especially sensitive to extremely dry and cold winters or very high summer temperatures. Radial growth was more significantly influenced by monthly temperatures compared to precipitation, but increasing sum of annual precipitation was main positive driver factor of diameter increment. Radial growth had the strongest relationship with weather conditions in July and October of previous year and March of the current year. Stand volume ranged from 378 to 545 m3 ha–1 at age around 75 years, while sycamore accounted for 32–82%. The horizontal structure of the tree layer was mostly random to aggregated; resembling the clumped spatial pattern of natural regeneration. Besides their wood production, these stands fulfil many ecosystem functions that are associated with high ecological stability, high structural differentiation and medium to high species diversity.
    Źródło:
    Dendrobiology; 2018, 79; 61-76
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Od globalności do lokalności: przemiany ruchu klimatycznego w Turcji
    From globality to locality : the dynamics of the climate movement in Turkey
    Autorzy:
    Wiktor-Mach, Dobrosława
    Powiązania:
    https://bibliotekanauki.pl/articles/2025755.pdf
    Data publikacji:
    2021-11-29
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    climate movement
    dynamics of social movements
    Turkey
    ruch klimatyczny
    dynamika ruchów społecznych
    Turcja
    Opis:
    Celem artykułu jest pokazanie genezy oraz przemian aktywizmu klimatycznego w T urcji od poziomu globalnego po lokalny. Ruch klimatyczny zakorzeniony jest mocno w przestrzeni miejskiej, ale zwłaszcza na początku mobilizacja społeczna nakierowana była przede wszystkim na próby oddziaływania na międzynarodową politykę klimatyczną. W kontekście rozczarowania brakiem konkretnych rozwiązań na najwyższym szczeblu tureckie organizacje pozarządowe i grupy nieformalne zaangażowane w temat klimatu zwracają coraz większą uwagę na poziom lokalny, w tym na miasta i polityki miejskie. Ważnymi czynnikami, które wpływają na zmiany strategii, są z jednej strony brak responsywności państwa wobec postulatów aktywistów, a z drugiej globalne i europejskie trendy zwiększania roli miast w szukaniu konkretnych rozwiązań mogących powstrzymać kryzys klimatyczny.
    The aim of the paper is to present the genesis and transformation of the Turkish climate activism from the global to local level. The movement’s origins are rooted in the urban space, but, especially in the movement’s early period, the social mobilization was directed most of all at the efforts to influence the international climate politics. In the context of disappointment with the lack of specific solutions at the highest level, Turkish climate-related NGOs and informal groups are paying increasing attention to the local level, including cities and urban policies. The key factors behind that strategic change include the lack of responsiveness from the state to the movement’s postulates and also the global and European trends of increasing the role of cities in search for specific solutions to halt the climate crisis.
    Źródło:
    Przegląd Socjologiczny; 2021, 70, 4; 15-37
    0033-2356
    Pojawia się w:
    Przegląd Socjologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diurnal dynamics of stomatal conductance and leaf temperature of grapevines (Vitis vinifera L.) in response to daily climatic variables
    Dobowa dynamika przewodności szparkowej i temperatury liści winorośli (Vitis vinifera L.) w reakcji na dzienne zmienne klimatyczne
    Autorzy:
    Sabir, A.
    Yazar, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/11543007.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    diurnal dynamics
    stomatal conductance
    grapevine
    leaf
    temperature
    Vitis vinifera
    plant response
    climate change
    sunlight
    Opis:
    Few studies examined the stomatal conductance (gs) characteristics of grapevines with an emphasis on daily climatic responses. In the present study, diurnal measurements on leaf temperature and gs of three grapevine cultivars (Alphonse Lavallée, Crimson Seedless and Italia) were carried out. The leaf temperature values for the cultivars at 08:30 were 25.0 ±1°C and it increased to a maximum value between 12:00 and 14:50 p.m. After an almost steady course, it decreased along with the decrease in ambient temperature. The gs values increased from morning (08:30 a.m.) to mid-morning (10:30 a.m.) for all the cultivars. After reaching a peak level at mid-morning, the gs decreased gradually from the mid-morning throughout the afternoon. In the morning, the highest and the least gs values were obtained from Italia (232 mmol H2O m-2 s-1) and Crimson Seedless (149.6 mmol H2O m-2 s-1) cultivars. At around 10:30, the gs for Italia, Crimson Seedless and Alphonse Lavallée were at the highest levels with their valus 287.7, 262.1 and 242.0 mmol H2O m-2 s-1, respectively. The last measurements on gs at around 16:10 varied from to 96.7 (Italia) to 112.0 mmol H2O m-2 s-1 (Alphonse Lavallée). During the daily time course, the gs depended mainly on irradiance. Tleaf showed a strong relationship with Tair for all the cultivars. There was a strong, but negative correlation between leaf temperature and air humidity for all the cultivars.
    Istnieje niewiele badań, które zajmowały się cechami przewodności szparkowej (gs) winorośli z akcentem na dzienne zmienne klimatyczne. W niniejszym badaniu przeprowadzono pomiary temperatury liści oraz gs trzech odmian winorośli (Alphonse Lavallée, Crimson Seedless i Italia). Temperatura liści u tych odmian o godzinie 8.30 wynosiła 25,0 ±1°C i zwiększała się do maksymalnej wartości między 12.00 a 14.50. Po okresie prawie wyrównanych wartości temperatura spadała wraz ze spadkiem temperatury otoczenia. Wartości gs rosły w godzinach porannych (8.30–10.30) dla wszystkich odmian. Po osiągnięciu poziomu szczytowego, gs stopniowo zmniejszała się począwszy od godzin rannych przez całe popołudnie. Największe i najmniejsze wartości gs rano osiągnięto u odmian Italia (232 mmol H2O m-2 s-1) i Crimson Seedless (149,6 mmol H2O m-2 s-1). Około 10.30 wartości gs dla Italia, Crimson Seedless oraz Alphonse Lavallée były największe i wynosiły, odpowiednio, 287,7; 262;1 i 242,0 mmol H2O m-2 s-1. Ostatni pomiar gs około 16.10 wskazywał od 96,7 (Italia) do 112,0 mmol H2O m-2 s-1 (Alphonse Lavallée). Podczas dnia gs zależał głównie od napromieniowania. Tliść wykazywał silny związek a Tpowietrze dla wszystkich odmian.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2015, 14, 4; 3-15
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Do seasonal dynamics influence traits and composition of macrobenthic assemblages of Sundarbans Estuarine System, India?
    Autorzy:
    Bhowmik, M.
    Mandal, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079001.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    seasonal dynamics
    macrobenthic assemblage
    macroinvertebrate
    climate change
    taxonomic analysis
    ecosystem functioning
    biological trait
    estuarine system
    India
    Opis:
    The present study investigates the influence of seasonal dynamics on macrobenthic assemblages in four seasons of 2017—2018 from the central sector of Indian Sundarbans which is under the constant threat of climate change. Besides taxonomic analysis, a traitbased approach has also been applied to assess the change in their ecosystem functioning. The maximum species density (11675 ± 11883.31 ind. m−2) was observed during the spring season which declines considerably in the monsoon season (5875 ± 6224.08 ind. m−2). A total of 95 macrobenthic taxa were recorded from Sundarbans and they were dominated by families like Capitellidae, Donacidae, Magelonidae, Nereididae, Paraonidae and Spionidae. Overall, polychaetes have shown higher taxonomic and functional variation than other groups. Opportunistic polychaete species have shown a prominent compositional shift during post-monsoon seasons. Both the univariate and multivariate analyses have shown a significant relation between macrobenthic composition and environmental parameters. SIMPER has depicted that environmental parameters made the station 4 unique for several types of molluscs like Acteocina estriata, Stenothyra deltae and Meretrix meretrix during spring. Trait percentages also showed a seasonal succession pattern and among the trait categories, burrowers and deposit feeders dominated the estuary. A gradual increase in suspension feeders in spring has been noticed. RLQ approach with fourth-corner analysis was used to unravel the relationship between traits and environmental parameters. Hence, the present study provided a comprehensive idea about the species composition along with their trait categories from such a dynamic habitat. That could be the first stepping stone for a long term monitoring of macrobenthic assemblages from this largest delta on earth.
    Źródło:
    Oceanologia; 2021, 63, 1; 80-98
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sea-level change and projected future flooding along the Egyptian Mediterranean coast
    Autorzy:
    Shaltout, M.
    Tonbol, K.
    Omstedt, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48806.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    sea level
    Egyptian Mediterranean coast
    Nile Delta
    climate change
    flooding
    satellite altimetry
    topography
    geophysical fluid dynamics
    Źródło:
    Oceanologia; 2015, 57, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temporal variation of extreme precipitation events in Lithuania
    Autorzy:
    Rimkus, E.
    Kazys, J.
    Bukantis, A.
    Krotovas, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48347.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    atmospheric circulation
    CCLM model
    climate condition
    dynamics
    heavy rain
    Lithuania
    negative change
    precipitation
    regional modelling
    spatial distribution
    Opis:
    Heavy precipitation events in Lithuania for the period 1961–2008 were analysed. The spatial distribution and dynamics of precipitation extremes were investigated. Positive tendencies and in some cases statistically significant trends were deter- mined for the whole of Lithuania. Atmospheric circulation processes were derived using Hess & Brezowski’s classification of macrocirculation forms. More than one third of heavy precipitation events (37%) were observed when the atmospheric circulation was zonal. The location of the central part of a cyclone (WZ weather condition subtype) over Lithuania is the most common synoptic situation (27%) during heavy precipitation events. Climatic projections according to outputs of the CCLM model are also presented in this research. The analysis shows that the recurrence of heavy precipitation events in the 21st century will increase significantly (by up to 22%) in Lithuania.
    Źródło:
    Oceanologia; 2011, 53, (1-TI)
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of weather on dynamics of plant functional groups in an abandoned limestone grassland
    Autorzy:
    Dzwonko, Z.
    Loster, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/58030.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    weather impact
    climate condition
    plant-weather relation
    dynamics
    plant functional group
    abandoned grassland
    limestone grassland
    permanent plot
    secondary succession
    Polska
    Opis:
    We examined to what extend the rate and direction of changes in unmanaged grassland depend on fluctuations in climatic conditions. Vegetation data from permanent plots in a semi-natural grassland in southern Poland collected over 12 years were used. Relations between weather variables, time, and the cover of 41 more frequent species and 14 plant functional groups were analysed. The greatest effect on the dynamics of species and functional groups had precipitation in spring and/or early summer, particularly in the current year. The majority of plant groups were significantly affected also by the temperature in spring and early summer in one of the three previous years. During 12 years, the cover of annuals and biennials, short plants, and plants with small leaves decreased, while the cover of taller plants, plants with larger leaves, and with vegetative spread increased. The analyses suggest that these successional changes were not directly associated with climatic conditions but were affected by them indirectly through interspecific competition. The fluctuations in climatic conditions, chiefly precipitation, had a significant effect on both the composition and the rate of changes in abandoned grassland. The increase in the cover of tall perennial species with broad leaves hindered succession towards woodland despite of the presence of woods in the closed vicinity. It can be expected that during drier periods colonisation of grassland by later successional species could be easier.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2011, 80, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decadal fluctuations in North Atlantic water inflow in the North Sea between 1958-2003: impacts on temperature and phytoplankton populations
    Autorzy:
    Leterme, S.C.
    Pingree, R.D.
    Skogen, M.D.
    Seuront, L.
    Reid, P.C.
    Attrill, M.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/48966.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    phytoplankton
    continental slope
    ocean circulation
    plankton
    Atlantic water
    plankton community
    climate
    temperature
    dynamics
    fluctuation
    pelagic ecosystem
    North Sea
    circulation
    population
    sea surface temperature
    Opis:
    The circulation of Atlantic water along the European continental slope, in particular the inflow into the North Sea, influences North Sea water characteristics with consequent changes in the environment affecting plankton community dynamics. The long-term effect of fluctuating oceanographic conditions on the North Sea pelagic ecosystem is assessed. It is shown that (i) there are similar regime shifts in the inflow through the northern North Sea and in Sea Surface Temperature, (ii) long-term phytoplankton trends are influenced by the inflow only in some North Sea regions, and (iii) the spatial variability in chemicophysical and biological parameters highlight the influence of smaller scale processes.
    Źródło:
    Oceanologia; 2008, 50, 1; 59-72
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Peculiarities of soil moisture and temperature dynamics based on TDR-measurement results for 2008-2012 in the Western Polesie territory of Ukraine
    Specyfika zmienności wilgotności i temperatury gleby na podstawie badań TDR w latach 2008-2012 na obszarze Polesia Zachodniego na Ukrainie
    Autorzy:
    Koshovyy, V.
    Alokhina, O.
    Skierucha, W.
    Wilczek, A.
    Pastuszka, T.
    Cymerman, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/35329.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    peculiarity
    soil moisture
    temperature dynamics
    soil parameter
    time domain reflectometry technique
    measurement result
    2008-2012 period
    climate condition
    solar activity
    Polesie region
    Ukraine
    Opis:
    The paper presents the results of an investigation which took place over the years 2008-2012 in the Shatsk National Natural Park. For the investigation four genetically different soils in that area were selected. Those were a soddy-podzolic soil (S01) under grass vegetation, lowland peat bog (S02), anthropogenic lowland peat bog (S03) with mineralised upper layer and a soddygley loamy soil (S04). The TDR device developed and created in the Institute of Agrophysics PAS in Lublin, and probes for measurement soil moisture, temperature and salinity were used in the study. The eight probes of the TDR-measuring system were installed at different depths, from 10 to 80 cm, at 10 cm intervals, for soils S02, S03 and S04, and at the depths of 10 сm and 50 cm for soil S01. The dynamics of soil temperature and soil moisture at different depths and the speed of response to changes in subsequent uncured layers are presented. Hourly TDR data have been diurnalaveraged and used for the calculation of correlation coefficients between soil temperature at different depths, air temperature, precipitation, solar activity parameter, Wolf number and total solar radiation. The study included also the effect of changes in solar radiation in the soil with the seasons.
    W pracy przedstawiono wyniki badań prowadzonych w latach 2008-2012 na terytorium Szackiego Parku Narodowego. Do badań wybrane zostały cztery genetycznie różne gleby na tym terenie. Są to gleby soddy – podzolic (S01) porośnieta trawą, lowland peat bog (S02), anthropogenic lowland peat bog (S03) ze zmineralizowaną warstwą powierzchniową i soddy – gley loamy soil (S04). Badania zostały przeprowadzone przy użyciu urządzenia TDR opracowanego i wykonanego w Instytucie Agrofizyki PAN w Lublinie oraz sond polowych do pomiaru wilgotności gleby, temperatury oraz zasolenia. Praca przedstawia zmienność właściwości fizycznych gleby w czasie w różnych typach gleby i na różnych głębokościach. Osiem sond TDR zostało zainstalowane w glebach S02, S03, S04 na głębokości od 10 cm do 80 cm w odstępach 10cm oraz w glebie S01 na głębokości od 10 cm do 50 cm. Dane dobowe z pomiarów TDR zostały uśrednione i wykorzystane do wyznaczenia współczynników korelacji między temperaturą gleby na różnych głębokościach a temperaturą powietrza, opadami atmosferycznymi, parametrami aktywności słonecznej, liczbą Wolfa i całkowitym promieniowaniem słonecznym. Zbadany został również wpływ promieniowania słonecznego na zmiany badanych parametrów w glebie wraz z porami roku.
    Źródło:
    Acta Agrophysica; 2013, 20, 4
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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