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Wyszukujesz frazę "freshwater ecosystem" wg kryterium: Temat

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    Wyświetlanie 1-9 z 9
    Tytuł:
    What is the best level to investigate fish parasites like a indicator of environmental stress?
    Autorzy:
    Gelnar, M.
    Dusek, L.
    Sebelova, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/840041.pdf
    Data publikacji:
    1998
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    fish
    metazoan parasite
    Leuciscus cephalus
    Dactylogyrus
    biotic environment
    biological property
    Gyrodactylus
    environmental stress
    chub
    parasite
    freshwater ecosystem
    parasite community
    community structure
    Monogenea
    Paradiplozoon
    Źródło:
    Annals of Parasitology; 1998, 44, 3
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of base solutions to determine equilibrium phosphours concentrations [EPC0] in stream sediments
    Autorzy:
    Lucci, G.M.
    McDowell, R.W.
    Condron, L.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/25216.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    stream sediment
    phosphorus concentration
    sediment
    erosion
    equilibrium phosphorus concentration
    stream water
    chemical change
    nitrogen
    nutrient
    freshwater ecosystem
    Źródło:
    International Agrophysics; 2010, 24, 2; 157-163
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rotifers as indicators of climate change in the Antarctic environments
    Autorzy:
    Pociecha, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/11956.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rotifer
    indicator
    climate change
    Antarctic environment
    biodiversity
    freshwater ecosystem
    terrestrial ecosystem
    Antarctic
    Opis:
    An important question stated in the presented paper is: Could rotifers be the indicators of climate change in the Antarctic environments? Rotifers are one of the most important components of the invertebrate fauna of the Antarctic freshwater and terrestrial ecosystems. However, investigations of their distribution, diversity and an ecological role in the environment have been widely neglected, mainly due to the methodological and taxonomical difficulties. During the investigations 176 species of rotifers were found, including the endemic and cosmopolitan species. Their existence is directly proportional to microvariations of humidity factor. Scientists still have poor knowledge about the occurrence of rotifer species in recently studied habitats e.g. cryoconite holes, nunataks or soil. Probably rotifers could be the indicators of climate change in the Antarctic freshwater and terrestrial ecosystems but more investigations and monitoring studies are needed.
    Źródło:
    Papers on Global Change; 2010, 17
    2300-8121
    1730-802X
    Pojawia się w:
    Papers on Global Change
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A brief analysis of North Sea physics
    Autorzy:
    Sundermann, J.
    Pohlmann, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/48534.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    biological parameter
    chemical parameter
    circulation
    freshwater budget
    marine ecosystem
    marine physics
    North Sea
    physical parameter
    remote sensing
    storm
    tide
    Opis:
    The current state of understanding the North Sea’s physical system is presented. First, basic phenomena like astronomical tides and general circulation will be described and analysed with respect to their physical nature and respective interactions. There will be special focus on fundamental dynamic balances. Next, some specific topics relevant to the marine ecosystem, the economy and society will be considered: among them, spreading and transport processes, the fresh water budget, the heat budget and storm surges. A separate section is dedicated to the North Sea of Tomorrow, i.e. the prospective variations of the physical environment resulting from global changes in future decades. The statements are based on the long experience of the authors and their groups and include findings that are little known if at all. The review finishes with a list of open questions and the corresponding research demands.
    Źródło:
    Oceanologia; 2011, 53, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accumulation of Cd and Pb in water, sediment and two littoral plants (Phragmites australis, Typha angustifolia) of freshwater ecosystem
    Akumulacja Cd i Pb w wodzie, osadzie i dwóch gatunkach roślin szuwarowych (Phragmites australis, Typha angustifolia) ekosystemów wodnych
    Autorzy:
    Borowiak, K.
    Kanclerz, J.
    Mleczek, M.
    Lisiak, M.
    Drzewiecka, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/205032.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cadmium
    lead
    freshwater ecosystem
    plants
    sediment
    water
    kadm
    ołów
    stężenie metali ciężkich
    ekosystem wodny
    rośliny szuwarowe
    osad
    woda
    Opis:
    Cd and Pb concentrations were measured in water, sediment and plant organs collected from selective sites located along the Bogdanka river (Poznań, Poland) in the 2012 growing season. The aim of the investigations was to monitor changes in heavy metal (HM) concentrations in different media over the periods, as well as to evaluate potential of two littoral plants, Phragmites australis and Typha angustifolia, for phytoremediation under natural conditions. Investigations revealed differences in HM concentrations in water and sediments. Higher values were observed in sediments than in water. The decrease in concentrations of both HMs in sediments was noted in two of the three selected water reservoirs during growing seasons, which suggests the possibility of their adsorption and accumulation by aquatic plants. Both investigated plant species accumulated ample amount of Cd and Pb in underground and aboveground plant tissues, however T. angustifolia revealed higher Cd translocation potential than P. australis. The latter revealed higher Pb accumulation in two lakes. Moreover, the translocation ratio was usually higher in spring, especially for Pb, in both plant species. Increasing level of pollution load index in sediment along the Bogdanka watercourse indicates accumulation of measured HMs.
    Stężenie Cd i Pb mierzono w wodzie, osadach, jak również w organach roślin zebranych z wybranych stanowisk zlokalizowanych wzdłuż biegu rzeki Bogdanka (Poznań, Polska) w sezonie wegetacyjnym 2012 roku. Celem badań był monitoring zmian zawartości metali ciężkich w różnych mediach w określonym czasie, jak również ocena dwóch gatunków roślin szuwarowych, Phragmites australis i Typha angustifolia, pod kątem zastosowania do fitoremediacji w warunkach naturalnych. Badania wykazały zróżnicowanie w stężeniach metali ciężkich w wodzie i osadach. Wyższe wartości zanotowano w osadach w porównaniu do wody. Zmniejszenie stężenia obu badanych pierwiastków zanotowano w osadach w dwóch z trzech badanych zbiorników w ciągu sezonu wegetacyjnego, co sugeruje możliwość ich absorpcji i akumulacji przez rośliny wodne. Oba badane gatunki zakumulowały pewne ilości Cd i Pb w częściach podziemnych i nadziemnych, jednakże T. angustifolia wykazała wyższy potencjał do translokacji Cd w porównaniu do P. australis. Ta ostatnia wykazała z kolei wyższy poziom akumulacji Pb w dwóch jeziorach. Współczynnik translokacji był w większości przypadków wyższy w okresie wiosennym, w szczególności dotyczy to Pb dla obu badanych gatunków. Zwiększający się poziom indeksu ładunku zanieczyszczeń w osadach wzdłuż biegu rzeki Bogdanka wskazywał na akumulację badanych pierwiastków.
    Źródło:
    Archives of Environmental Protection; 2016, 42, 3; 47-57
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    What can be inferred from shell morphology of Unio crassus?
    Autorzy:
    Zajac, K.
    Zajac, T.
    Cmiel, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/84534.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Tematy:
    unionid
    shell morphology
    Unio crassus
    freshwater ecosystem
    habitat
    Źródło:
    Folia Malacologica; 2016, 24, 1
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microbiome dynamics modeling and analysis in relation to spatio-temporal changes in physicochemical conditions of the water ecosystem
    Autorzy:
    Woźnica, Andrzej
    Kwaśniewski, Mirosław
    Chwiałkowska, Karolina
    Łozowski, Bartosz
    Absalon, Damian
    Libera, Marcin
    Krzyżowski, Michał
    Babczyńska, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/2173791.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microbial communities
    water monitoring
    freshwater ecosystem
    metataxonomics
    Opis:
    In this paper, we consider the development of reliable tools to assess the water quality and state of aquatic ecosystems in dynamic conditions a crucial need to address. One of such tools could be devised by monitoring the taxonomic structure of reservoirs’ microbiomes. Microbial taxa’s ecological and metabolic characteristics suggest their essential roles in maintaining the water ecosystem’s environmental equilibrium. The study aimed to explain the role of diversity and seasonal variability of the microbial communities in the ecosystem stability on the example of Goczałkowice Reservoir (Poland). The structure of the reservoir microbiome was studied using bioinformatics and modeling techniques. Water was sampled periodically in July & November 2010, and April 2011 at four representative sites. The abundance and relative fraction of the limnetic taxonomic units were determined in respect to the physicochemical indices. Significant seasonal variations in the number of operational taxonomic units (OTU) were observed within the reservoir basin’s main body but not at the main tributary’s mouth. The highest values of the correlation coefficients between OTU and physicochemical variables were obtained for Burkholderiales, Pseudoanabenales, Rickettsiales, Roseiflexales, Methylophilales, Actinomycetales, and Cryptophyta. These microorganisms are proposed as indicators of environmental conditions and water quality. Metataxonomic analyses of the freshwater microbiome in the reservoir, showed that microorganisms constitute conservative communities that undergo seasonal and local changes regarding the relative participation of the identified taxa. Therefore, we propose that monitoring those variations could provide a reliable measure of the state of aquatic ecosystems.
    Źródło:
    Archives of Environmental Protection; 2022, 48, 1; 18--30
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance of Metallothionein Biomarker from Sulcospira testudinaria to Assess Heavy Metal Pollution in the Brantas River Watershed, Indonesia
    Autorzy:
    Hertika, Asus Maizar Suryanto
    Arfiati, Diana
    Lusiana, Evellin Dewi
    Putra, Renanda B. D. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201778.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    aquatic monitoring
    biomonitoring
    freshwater ecosystem
    water contamination
    Opis:
    Heavy metal pollution in freshwater ecosystems is a critical issue because it threatens the ecosystem as well as public health. Early detection of these pollutants is therefore essential, and biomarker analysis can be an ideal way to achieve this. Metallothionein (MT) protein is a widely-used molecular biomarker related to the physiological and biological changes which suitable bioindicators, like freshwater snails, undergo in stressful environments. The purpose of this research is to assess the relationship between the heavy metals lead (Pb), cadmium (Cd) and mercury (Hg) and MT levels in freshwater snails (Sulcospira testudinaria) in the Brantas River watershed. Heavy metals were assayed using an atomic absorption spectrophotometer, while MT levels were analyzed using indirect enzyme-linked immunosorbent assay (ELISA). Water quality parameters including temperature, dissolved oxygen (DO), biological oxygen demand (BOD), ammonia concentration, and phenol concentration were also measured. Samples were obtained from ten sampling sites at Brantas River watershed. The results indicated that Pb concentration ranged from 0.001–0.006 mg/L, Hg from 0.001–0.005 mg/L, and Cd from 0.005–0.03 mg/L, while MT concentration ranged from 0.40–0.80 ng/g. Relationship analysis between heavy metals and MT level in this study revealed the significant effect of Pb concentration on MT values in Sulcospira testudinaria. Therefore, MT in this snail is a potential biomarker for Pb contamination.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 3; 276--286
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The challenges of aquaculture in protecting the aquatic ecosystems in the context of climate changes
    Autorzy:
    Wróbel, Jacek
    Gałczyńska, Małgorzata
    Tański, Adam
    Korzelecka-Orkisz, Agata
    Formicki, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/27312664.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    aquaponics
    freshwater ecosystem
    seawater ecosystem
    greenhouse gases
    integrated multi-trophic aquaculture
    mariculture
    pond
    recirculating aquaculture system
    water temperature
    Opis:
    The paper discusses the current prognoses of aquaculture development worldwide putting an emphasis on its effect on the environment and the issue of the protection of water reservoirs in different countries. Water consumption in diversified aquaculture systems is presented herein as well as the characteristics of the mechanical and biological water treatment methods in fish farms, with particular attention paid to the recirculating water systems. New aquaculture technologies using post-production waters are presented. The paper provides a discussion on the contribution of aquaculture to the global greenhouse gas emissions and the means of limiting this emission. The effect of climate change on aquatic ecosystems is presented in the context of the changes of the aquaculture production profile. The paper includes a brief presentation of the methods of mitigating the changes with respect to contamination of aquatic ecosystems as well as climate change. Reducing the water footprint can be achieved through selective breeding, species diversification and implementation of more technologically advanced aquaculture systems such as: integrated multi-trophic aquaculture, aquaponics and recirculation systems in aquaculture. The need for certification of fish farms with water recirculation systems is justified in the paper. The issues addressed herein are summarised and the main areas for extending the research promoting preservation of aquatic ecosystems in aquaculture are presented.
    Źródło:
    Journal of Water and Land Development; 2023, 57; 231--241
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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