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Artykuły w czasopismach na temat "Phytoplankton"

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Suardiani, Ni Kadek, I. Wayan Arthana i Gde Raka Angga Kartika. "Produktivitas Primer Fitoplankton pada Daerah Penangkapan Ikan di Taman Wisata Alam Danau Buyan, Buleleng, Bali". Current Trends in Aquatic Science 1, nr 1 (30.08.2018): 8. http://dx.doi.org/10.24843/ctas.2018.v01.i01.p02.

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This research aims to identify productivity value of phytoplankton’s net primary as well as its relation within parameter of physics, chemistry, and aquatic biology to the productivity value of phytoplankton’s net primary in the waters of Lake Buyan Nature Park. Measurement of primary phytoplankton productivity is conducted by using bright and dark bottle method. The taking of lake water samples for measurement of phytoplankton primary productivity and measurement of supporting parameters namely physics (temperature, brightness, turbidity), chemistry (pH, nitrate, phosphate) and biology (phytoplankton abundance) were carried out at four research stations in the fishing area. Data analysis used in this research is correlation analysis among parameters of physic, chemistry, and aquatic biology to the net primary productivity value of phytoplankton by using the PAST 3.1 application. The obtained result showed that the value of net primary productivity ranged from 76.39 to 211.46 mgC / m3 / day and the parameters of physics, chemistry and aquatic biology have a relationship with net primary productivity of phytoplankton. Brightness, abundance of phytoplankton, nitrate, temperature, dissolved oxygen, pH and phosphate which are positively correlated with net primary productivity of phytoplankton while water turbidity is negatively correlated with it. Parameters that have a strong to very strong relationship with net primary productivity are dissolved oxygen, temperature, nitrate, phytoplankton abundance, and water brightness.
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Carvalho, Wanderson Fernandes de, i Eliane Gonzalez Rodriguez. "Development of primary and bacterial productivity in upwelling waters of Arraial do Cabo region, RJ (Brazil)". Brazilian Journal of Oceanography 52, nr 1 (marzec 2004): 35–45. http://dx.doi.org/10.1590/s1679-87592004000100004.

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A relationship between phytoplankton and bacterioplankton has been observed in a laboratory experiment, simulating partial and complete upwelling conditions. Primary and bacterial productivity presented a similar pattern, with a three-stage development (growth, peak and decline in production). However, bacterial development stages did not occur simultaneously with the phytoplanktonic development, that is, the highest bacterial production rates occurred in the stages of growth and decline of the primary production, whilst the lowest values of bacterial productivity were simultaneous to the highest phytoplanktonic production stage. Analysis of data obtained in this experiment shows a close relationship between phytoplankton and bacteria, in which these organisms might be competing for inorganic nutrients in some moments, and bacteria might have, as an important source of carbon, the particulate or dissolved organic matter coming from the phytoplankton. Besides that, bacteria might play an important role in the initial stages of phytoplankton blooms, when they might be one of the main conditioning agents of the waters that have just upwelled, allowing the plain phytoplanktonic development.
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Jahan, Sarwat. "The Role of Phytoplanktons in the Environment and in Human Life, a Review". BASRA JOURNAL OF SCIENCE 41, nr 2 (1.07.2023): 392–411. http://dx.doi.org/10.29072/basjs.20230212.

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Phytoplankton is microscopic organisms that lie in watery environment and make their own food from sunlight through photosynthesis. Phytoplanktons are the core producers and major role play to the food web. They produce the similar amount of biomass of CO2 as all terrestrial plants combined. Several environmental factors, many of which are currently undergoing significant changes as a result of human-caused global warming, control phytoplankton productivity. Generally, ocean ecosystem is based on phytoplankton. It contributes about half of the world’s primary production, and diverse phytoplankton taxa play distinctive roles in the earth biogeochemical cycles, biological pump, ocean food chain, bioindicator, food industry and drugs. In the present paper an effort has been made to give broad review of literature on phytoplankton. This review clearly indicates that such research is necessary and emphasis the urgency of present work. The recent review highlights the value of phytoplankton in our lives and environment.
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Lürling, Miquel. "Grazing resistance in phytoplankton". Hydrobiologia 848, nr 1 (11.08.2020): 237–49. http://dx.doi.org/10.1007/s10750-020-04370-3.

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AbstractPhytoplankton is confronted with a variable assemblage of zooplankton grazers that create a strong selection pressure for traits that reduce mortality. Phytoplankton is, however, also challenged to remain suspended and to acquire sufficient resources for growth. Consequently, phytoplanktic organisms have evolved a variety of strategies to survive in a variable environment. An overview is presented of the various phytoplankton defense strategies, and costs and benefits of phytoplankton defenses with a zooming in on grazer-induced colony formation. The trade-off between phytoplankton competitive abilities and defenses against grazing favor adaptive trait changes—rapid evolution and phenotypic plasticity—that have the potential to influence population and community dynamics, as exemplified by controlled chemostat experiments. An interspecific defense–growth trade-off could explain seasonal shifts in the species composition of an in situ phytoplankton community yielding defense and growth rate as key traits of the phytoplankton. The importance of grazing and protection against grazing in shaping the phytoplankton community structure should not be underestimated. The trade-offs between nutrient acquisition, remaining suspended, and grazing resistance generate the dynamic phytoplankton community composition.
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Sandi, Phyo, Thida Khaing, Kay Thi Nyunt, Nwe Nwe Soe Hlaing, Aye Aye Khaing i Nandar Aye Winn. "Primary Checklist of Phytoplankton Genera in Sunye Lake, Mandalay Region, Myanmar". Asian Journal of Environment & Ecology 23, nr 8 (6.07.2024): 1–10. http://dx.doi.org/10.9734/ajee/2024/v23i8579.

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Phytoplankton are the foundation of food webs and the most important producer in aquatic ecosystems. They can photosynthesize and convert light energy into organic energy. They are a secrete ingredients used as a bioindicator of water quality and pollution. This study investigated composition of phytoplankton in freshwater body of Sunye lake, Mandalay region. The study was conducted one year from January 2020 to December 2020. According to the study, out of 47 total algal genera; Chlorophyceae (14 genera), Baciliophyceae (11 genera); Cyonophyceae (nine genera); Zygnematophyceae (two genera), Euglenophyceae (one genera) and Conjugatophyceae (one genera) were recorded. In this study, among total genera of 37, the class of Chlorophyceae (45%) is the largest group followed by (28%), Bacillariophyceae Cyanophyceae (19%), Zygnematophyceae (4%), Euglenophyceae (2%) and Conjugatophyceae (2%). This present check list study will be useful base line data for further study of phytoplankton in the lake. Aims: The aim of study is to record and give the information’s of phytoplankton existence and useful data for further study and lake ecosystem. Study Design: The water sample was collected monthly early morning once a week throughout the study period. Place and Duration of Study: These sample were collected from natural freshwater Sunye lake during January 2020 to December 2020 for one year period. Methodology: Phytoplankton samples were taken by filtering through 25 µm mesh plankton net and preserved with a Lugol‘s solution and kept in refrigerator for further study. The sample was identified and took photograph by using the microscope (OPTIKA). The results of phytoplanktons were checked with phytoplankton identification key, taxonomic database site. Results: In the present study, 47 genera belong to the six different classes of phytoplanktons were recorded Chlorophyceae, Bacillariophyceae, Cyanophyceae, Zygnematophyceae, Euglenophyceae, Conjugatophyceae. Conclusion: The current study is first time to study the checklist of phytoplankton in Sunye Lake and should be continuously study to update the checklist data of phytoplankton genera and seasonally abundance which is important indicators of lake ecosystem.
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Tandon, Praveen Kumar, i Neelam Shukla. "A STUDY ON PHYTOPLANKTON DIVERSITY IN RIVER GANGA AT ALLAHABAD, UTTAR PRADESH (INDIA)". Green Chemistry & Technology Letters 1, nr 01 (7.01.2016): 92–95. http://dx.doi.org/10.18510/gctl.2015.1115.

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Presence of microscopic algae can cause taste and odour problems, water discoloration, or form large mats that can interfere with boating, swimming, and fishing. The present study was conducted to assess the phytoplankton assemblages which in turn can serve as a suitable method to assess the quality of river ecosystem. Diversity of phytoplankton in river Ganga in Allahabad at five sampling stations was conducted from March to April 2014. Plankton identified in the river mainly composed of the members of Bacillariophyceae, Chlorophyceae and Cyanophyceae families.The Palmer pollution index values were calculated to know the level of organic pollution and to support the data. On the basis of quantitative and qualitative estimates 15 significant algal species were identified which can tolerate high degree of pollution. The abundance of phytoplanktons in april was greater than in march. Abundance of phytoplanktons and algal bloom was maximum at Chhatnag ghat whereas at Sangam low phytoplankton diversity was found.In general, moderate temperature, low current velocity and high transparency of water appear to be better the conditions for algal growth in the river Ganga. These findings highlighted the deterioration of water quality of the river due to industrial, commercial and anthropogenic activities. The status of phytoplankton diversity of river Ganga was quite low indicating that the river is highly polluted.
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Indrayani, Ervina, Lisiard Dimara, Kalvin Paiki i Felix Reba. "The Analysis of Phytoplankton Abundance Using Weibull Distribution (A Case Study in the Coastal Area of East Yapen in the Regency of Yapen Islands, Papua)". Journal of Education and Learning 7, nr 3 (25.03.2018): 251. http://dx.doi.org/10.5539/jel.v7n3p251.

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The coastal waters of East Yapen is one of the spawning sites and areas of care for marine biota in Papua. Because of its very open location, it is widely used by human activities such as fishing, residential, industrial and cruise lines. This indirectly affects the balance of coastal waters condition of East Yapen that impact on the existence of marine biota, especially phytoplankton. Phytoplanktons have a very important role because phytoplankton is the primary producer in the food chain as a link to higher tropical levels. Therefore, special studies are needed such as looking at the distribution of phytoplankton abundance at each site. The data analysis uses the American Public Health Association (APHA), Geo-statistical data, and Chi Square. Then, the distribution parameters are estimated using the Maximum Likelihood Estimation (MLE) method.The obtained parameters are used to describe the cumulative probability and survival of phytoplankton distribution. Samples are taken from fifteen sampling points. The form parameter of the phytoplankton abundance data is 3.9844 and the scale parameter is 79.929. So phytoplankton is the most widely spread in the 15th location, followed by the 6th location. While phytoplankton is at least in the 8th location.The results showthat the highest phytoplankton abundance composition is Bacillariophyceae (50%) and the lowest is Phyrrophyceae (9%) and Cyanophceae. The research is expected to provide an overview of the fertility rate of East Yapen Coastal Waters in particular and Yapen Islands regency in general.
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He, Yike, Zuoyi Chen, Xin Feng, Guangyi Wang, Gang Wang i Jiabo Zhang. "Daily Samples Revealing Shift in Phytoplankton Community and Its Environmental Drivers during Summer in Qinhuangdao Coastal Area, China". Water 14, nr 10 (18.05.2022): 1625. http://dx.doi.org/10.3390/w14101625.

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Rapid urbanization and economic development in coastal regions have significantly increased coastal nutrient pollution and remarkably changed the phytoplankton community and developed some species into bloom, resulting in large economic losses and serious threats to public health. Therefore, it is indispensable to reveal the shift in the phytoplankton community and phytoplankton abundance, and phytoplankton’s environmental drivers. However, previous studies could not present the details of the environmental drivers of phytoplankton due to samples being collected with low temporal resolution. Here, high-temporal-resolution (daily) samples were collected to investigate the influence of environmental factors on phytoplankton in Qinhuangdao for 44 days. Phytoplankton communities showed a rapid succession, with predominant genera changing in the order Skeletonema–Chaetoceros–Skeletonema–Thalassiosira. Similarly, Thalassiosira pacifica, Skeletonema costatum, Chaetoceros tortissimus, and Chattonella marina were identified as the dominant species and were abundant in 0–1.27 × 107 cells·L−1, 0–9.34 × 106 cells·L−1, 0–6.49 × 106 cells·L−1, and 0–3.64 × 106 cells·L−1, respectively. Moreover, inflows facilitate the rapid succession of the phytoplankton community. Dissolved inorganic phosphorus (DIP) was found to remarkably influence the succession of phytoplankton communities and the bloom of the top three dominant species, i.e., Thalassiosira pacifica, Skeletonema costatum, and Chaetoceros tortissimus. Overall, our results provide high-temporal-resolution observations of phytoplankton community succession and reveal its environmental drivers. This contributes to our current understanding of the occurrence of algae blooms and supports the development of management strategies to control algae bloom in coastal waters.
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Coupel, P., H. Y. Jin, M. Joo, R. Horner, H. A. Bouvet, M. A. Sicre, J. C. Gascard, J. F. Chen, V. Garçon i D. Ruiz-Pino. "Phytoplankton distribution in unusually low sea ice cover over the Pacific Arctic". Biogeosciences 9, nr 11 (26.11.2012): 4835–50. http://dx.doi.org/10.5194/bg-9-4835-2012.

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Abstract. A large part of the Pacific Arctic basin experiences ice-free conditions in summer as a result of sea ice cover steadily decreasing over the last decades. To evaluate the impact of sea ice retreat on the marine ecosystem, phytoplankton in situ observations were acquired over the Chukchi shelf and the Canadian basin in 2008, a year of high melting. Pigment analyses and taxonomy enumerations were used to characterise the distribution of main phytoplanktonic groups. Marked spatial variability of the phytoplankton distribution was observed in summer 2008. Comparison of eight phytoplankton functional groups and 3 size-classes (pico-, nano- and micro-phytoplankton) also showed significant differences in abundance, biomass and distribution between summer of low ice cover (2008) and heavy ice summer (1994). Environmental parameters such as freshening, stratification, light and nutrient availability are discussed as possible causes to explain the observed differences in phytoplankton community structure between 1994 and 2008.
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García-Prieto, Juan Carlos, Francisco Javier Burguillo Muñoz, Manuel G. Roig i José Bernardo Proal-Najera. "Prediction of Phytoplankton Biomass in Small Rivers of Central Spain by Data Mining Method of Partial Least-Squares Regression". Proceedings 48, nr 1 (12.11.2019): 16. http://dx.doi.org/10.3390/ecws-4-06427.

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The Water Framework Directive (WFD, EC, 2000) states that the “good” ecological status of natural water bodies must be based on their chemical, hydromorphological and biological features, especially under drastic conditions of floods or droughts. Phytoplankton is considered a good environmental bioindicator (WFD) and climate change has a strong impact on phytoplankton communities and water quality. The development of robust techniques to predict and control phytoplankton growth is still in progress. The aim of this study is to analyze the impact of the different stressors associated with the change in phytoplanktonic communities in small rivers in the center of the Iberian Peninsula (Southwestern Europe). A statistical study on the identification of the essential limiting variables in the phytoplankton growth and its seasonal variation by climate change was carried out. In this study, a new method based on the partial least-squares (PLS) regression technique has been used to predict the concentration of phytoplankton and cyanophytes from 22 variables usually monitored in rivers. The predictive models have shown a good agreement between training and test data sets in rivers and seasons (dry and wet). The phytoplankton in dry periods showed greatest similarities, these dry periods being the most important factor in the phytoplankton proliferation
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Rozprawy doktorskie na temat "Phytoplankton"

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Striebel, Maren. "Phytoplankton-Daphnien-Interaktionen Einfluss der Epilimniontiefe auf Phytoplankton-Daphnien-Interaktionen mit Schwerpunkt Phytoplankton". Saarbrücken VDM Verlag Dr. Müller, 2004. http://d-nb.info/989156214/04.

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Durham, William McKinney. "Phytoplankton in flow". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70868.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 111-120).
Phytoplankton are small, unicellular organisms, which form the base of the marine food web and are cumulatively responsible for almost half the global production of oxygen. While phytoplankton live in an environment characterized by ubiquitous fluid motion, the impacts of hydrodynamic conditions on phytoplankton ecology remain poorly understood. In this thesis, we propose two novel biophysical mechanisms that rely on the interaction between phytoplankton motility and fluid shear and demonstrate how these mechanisms can drive thin phytoplankton layers and microscale cell aggregations. First, we consider 'thin phytoplankton layers', important hotspots of ecological activity that are found meters beneath the ocean surface and contain cell concentrations up to two orders of magnitude above ambient. While current interpretations of their formation favor abiotic processes, many phytoplankton species found in these layers are motile. We demonstrate that layers can form when the vertical migration of phytoplankton is disrupted by hydrodynamic shear. Using a combination of experiments, individual-based simulations, and continuum modeling, we show that this mechanism - which we call 'gyrotactic trapping' - is capable of triggering thin phytoplankton layers under hydrodynamic conditions typical of the environments that often harbor thin layers. Second, we explore the potential for turbulent shear to produce patchiness in the spatial distribution of motile phytoplankton. Field measurements have revealed that motile phytoplankton form aggregations at the smallest scales of marine turbulence - the Kolmogorov scale (typically millimeters to centimeters) - whereas non-motile cells do not. We propose a new mechanism for the formation of this small-scale patchiness based on the interplay of gyrotactic motility and turbulent shear. Contrary to intuition, turbulence does not stir a plankton suspension to homogeneity, but instead drives patchiness. Using an analytical model of vortical flow we show that motility can give rise to a striking array of patchiness regimes. We then test this mechanism using both laboratory experiments and isotropic turbulent flows generated via Direct Numerical Simulation. We find that motile phytoplankton cells rapidly form aggregations, whereas non-motile cells remain randomly distributed. In summary, this thesis demonstrates that microhydrodynamic conditions play a fundamental role in phytoplankton ecology and, as a consequence, can contribute to shape macroscale characteristics of the Ocean.
by William McKinney Durham.
Ph.D.
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Heilmann, Jens Peter. "Eutrophication, phytoplankton productivity and the size structure of the phytoplankton community". Thesis, Bangor University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263279.

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Tang, Senming. "Seasonal changes in phytoplankton species composition at Port Shelter, Hong Kong, China (1998-1999)". Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22718850.

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Maldonado-Pareja, Maria Teresa. "Iron acquisition by marine phytoplankton". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0022/NQ50215.pdf.

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Contant, Jacinthe. "Phytoplankton Communities in Temperate Rivers". Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20623.

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The structure of phytoplankton communities was examined seasonally across five rivers with a focus on small cells and their relative importance. Picophytoplankton (0.2-2 μm), previously considered insignificant in rivers, reached densities as high as those observed in lakes and oceans (~ 10e4-10e5 cells/mL). Their relative importance was not a function of trophic state with the highest contribution to algal biomass found in the most eutrophic river. Body size distributions were analyzed from both chlorophyll-a size fractions and taxonomic enumerations; no significant effect of river or season was detected, suggesting that phytoplankton size distribution is not a useful metric of change in rivers. Unlike lake ecosystems, the rivers were uniformly dominated by small cells (< 20 μm). Taxonomic analyses of the seasonal succession did not reveal a common periodicity of particular divisions (e.g. diatoms). However, strong dominance was more typical of eutrophic rivers even though taxa richness was similar.
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Foy, R. H. "Phytoplankton growth in Lough Neagh". Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333608.

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Browning, Thomas John. "Nutrient limitation of marine phytoplankton". Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:e250879e-131e-406a-a3cb-571e00dc0c81.

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Phytoplankton across the majority of the world’s oceans are thought to be limited by the availability of either nitrate or iron (Fe). However, the spatial resolution of experiments confirming this is low. Two thesis chapters present the results of bottle enrichment experiments at high spatial resolution across (i) the South Subtropical Convergence (SSTC) in the South Atlantic, and (ii) the Scotia Sea-Drake Passage sector of the Southern Ocean. These studies have added detail to the boundaries of limiting nutrients in these regions. Patterns of Fast Repetition Rate fluorometry (FRRf) derived parameters, physiological regulation of these parameters including influences of community structure, and the environmental controls driving them are analysed. Given its role as an essential micronutrient, there has been much effort in constraining potential sources of bioavailable Fe to the ocean, with one such source receiving recent interest: erupted ash from volcanoes. Bottle-scale ash-incubation experiments alongside conventional iron additions and laboratory ash-leaching experiments were conducted, the results of which suggest phytoplankton would respond strongly to ash deposition in the High Nitrate, Low Chlorophyll (HNLC) areas of the Southern Ocean. Particularly notable was the evidence these experiments provided for potential (co-)limitation of phytoplankton in these waters by the micronutrient manganese. The first three chapters of this thesis highlight a number of biogeochemical implications of trace metal stress, particularly that of Fe stress. Therefore, the ability to map the oceanographic extent of Fe-stressed regions using remote sensing would represent a particularly useful advance in marine biogeochemistry. Theoretically it could be possible to map Fe stress from space using satellite images of chlorophyll fluorescence, yet there are important uncertainties that need to be addressed before this can be carried out. In particular, a better understanding of the midday non-photochemical quenching driven reductions in chlorophyll fluorescence occurring at the time satellite images are captured is required. Analysis of over 200 non-photochemical quenching experiments collected over three research cruises, has allowed us to explore non-photochemical quenching and its relevance for using sunlight induced chlorophyll fluorescence to assess broad patterns of Fe stress. Our results have confirmed that satellite fluorescence quantum yields have the potential to reveal broad regions of Fe stress, however a dynamic non-photochemical quenching correction derived from our experiments and analysis was necessary to achieve this.
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Charlton, Fergus. "Remote sensing of freshwater phytoplankton". Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/21140.

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This study researches the potential for using hyperspectral remote sensing to identify the phytoplanktonic composition of a freshwater bloom. Six novel analytical techniques were developed to identify phytoplankton class from reflectance spectra. These techniques offer the water manager a variety of means to identify the dominant phytoplankton class in a target water body. Identification of phytoplankton class is possible because certain photosynthetic pigments contained within phytoplankton cells are taxonomically significant, being indicative of a particular class. The detection of these pigments can be used to identify the presence of a particular phytoplanktonic class in an aquatic system. It is possible to identify these pigments using optical methods because they exhibit unique spectral absorption signatures. Such pigment absorption features are manifest in the composite reflectance signature from water bodies as measured by remote sensing instruments. However, due to the presence of the spectral features from other photosynthetic pigments and the other optically active components of water bodies, extracting from reflectance spectra the spectral information pertaining to individual class marker pigments can be difficult. The phytoplankton class identification techniques presented in this study were developed using absorption and reflectance spectra from pure cultures of phytoplankton. The reflectance spectra were measured in the controlled environment of a laboratory based experimental tank designed for this study. The class identification techniques were tested on field and airborne reflectance spectra measured from a eutrophic inland lake.
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Malick, Lisa A. "Light quality and phytoplankton viability". [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000350.

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Książki na temat "Phytoplankton"

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Roy, Suzanne, Carole Llewellyn, Einar Skarstad Egeland i Geir Johnsen, red. Phytoplankton Pigments. Cambridge: Cambridge University Press, 2011. http://dx.doi.org/10.1017/cbo9780511732263.

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Harris, Graham P. Phytoplankton Ecology. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3165-7.

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Harris, Graham P. Phytoplankton Ecology. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4081-9.

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Williams, Peter J. le B., David N. Thomas i Colin S. Reynolds, red. Phytoplankton Productivity. Oxford, UK: Blackwell Science Ltd, 2002. http://dx.doi.org/10.1002/9780470995204.

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T, Kersey William, i Munger Samuel P, red. Marine phytoplankton. Hauppauge, NY, USA: Nova Science, 2009.

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Cosper, Elizabeth M., V. M. Bricelj i E. J. Carpenter, red. Novel Phytoplankton Blooms. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-75280-3.

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Moestrup, Øjvind. Potentially toxic phytoplankton. Copenhagen: International Council for the Exploration of the Sea, 1992.

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M, Alvarez-Cobelas, i International Association of Phytoplankton Taxonomy and Ecology. Workshop, red. Phytoplankton and trophic gradients. Boston, MA: Kluwer Academic Publishers, 1998.

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Munawar, M., i J. F. Talling, red. Seasonality of Freshwater Phytoplankton. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4818-1.

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Alvarez-Cobelas, Miguel, Colin S. Reynolds, Pedro Sánchez-Castillo i Jørgen Kristiansen, red. Phytoplankton and Trophic Gradients. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-017-2668-9.

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Części książek na temat "Phytoplankton"

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Pietra, Francesco. "Phytoplankton". W A Secret World, 11–33. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-7531-8_2.

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de Domitrovic, Yolanda Zalocar, M. Devercelli i M. O. Gracia de Emiliani. "Phytoplankton". W The Middle Paraná River, 177–203. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-70624-3_7.

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Zohary, Tamar, Yosef Z. Yacobi, Alla Alster, Tatiana Fishbein, Shachaf Lippman i Gideon Tibor. "Phytoplankton". W Lake Kinneret, 161–90. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-8944-8_10.

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Brock, Thomas D. "Phytoplankton". W A Eutrophic Lake, 85–114. New York, NY: Springer New York, 1985. http://dx.doi.org/10.1007/978-1-4419-8700-6_4.

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Crompton, Thomas R. "Phytoplankton". W Analysis of Solids in Natural Waters, 212–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-85223-7_9.

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Litchman, Elena. "Phytoplankton". W Metabolic Ecology, 154–63. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781119968535.ch13.

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Dor, Inka. "Phytoplankton". W Hypertrophic Reservoirs for Wastewater Storage and Reuse, 173–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-60112-5_11.

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Marshall, Harold G. "Phytoplankton". W Encyclopedia of Estuaries, 491–93. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-8801-4_29.

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Scheffer, Marten. "Phytoplankton". W Ecology of Shallow Lakes, 76–121. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-3154-0_3.

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Finkel, Zoe V., i Andrew J. Irwin. "Phytoplankton". W Encyclopedia of Astrobiology, 1–6. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-642-27833-4_5416-1.

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Streszczenia konferencji na temat "Phytoplankton"

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Okuda, Tetsuji, Tetsuji Okuda, Satoshi Sekitou, Satoshi Sekitou, Akira Umehara, Akira Umehara, Satoshi Asaoka i in. "FATE OF SILTS AND CLAY FROM RIVER AND ITS CONTRIBUTION TO TRANSPARENCY". W Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b9408d54ab6.64595606.

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Phytoplankton plays a key role as primary producer, forming the base of marine food webs. Knowledge in relation to permeability of light in water is important for the understanding of phytoplankton growth in the euphotic zone. In this study, we conducted laboratory experiments in relation to light attenuation using inorganic particle (silica particle) and field investigations in Osaka Bay. There was a positive correlation between the concentrations of the silica particle and integral values of the absorbance at photosynthetic active radiation (PAR: wavelength 400-700 nm) in the laboratory experiments. The highest integral value of the absorbance at PAR was observed for the particle size of 1.0 μm. In Osaka Bay, high contribution of the inorganic particle to light attenuation was observed compared to the organic particles. Multiple linear regression analysis using the particle size and the amount of total suspended solids (TSS: consisting of three component fractions; organic/inorganic tripton and phytoplanktons) showed that the particle size was an essential factor controlling the light attenuation in the coastal sea.
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Okuda, Tetsuji, Tetsuji Okuda, Satoshi Sekitou, Satoshi Sekitou, Akira Umehara, Akira Umehara, Satoshi Asaoka i in. "FATE OF SILTS AND CLAY FROM RIVER AND ITS CONTRIBUTION TO TRANSPARENCY". W Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b431603053e.

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Phytoplankton plays a key role as primary producer, forming the base of marine food webs. Knowledge in relation to permeability of light in water is important for the understanding of phytoplankton growth in the euphotic zone. In this study, we conducted laboratory experiments in relation to light attenuation using inorganic particle (silica particle) and field investigations in Osaka Bay. There was a positive correlation between the concentrations of the silica particle and integral values of the absorbance at photosynthetic active radiation (PAR: wavelength 400-700 nm) in the laboratory experiments. The highest integral value of the absorbance at PAR was observed for the particle size of 1.0 μm. In Osaka Bay, high contribution of the inorganic particle to light attenuation was observed compared to the organic particles. Multiple linear regression analysis using the particle size and the amount of total suspended solids (TSS: consisting of three component fractions; organic/inorganic tripton and phytoplanktons) showed that the particle size was an essential factor controlling the light attenuation in the coastal sea.
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Hails, A., C. Boyes, A. Boyes, R. D. Currier, K. Henderson, A. Kotlewski i G. J. Kirkpatrick. "The Optical Phytoplankton Discriminator". W OCEANS 2009. IEEE, 2009. http://dx.doi.org/10.23919/oceans.2009.5422324.

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Ungureanu, Laurenţia, Daria Tumanova i Grigore Ungureanu. "The seasonal dynamics of phytoplankton and water quality in the Prut River lower sector". W Xth International Conference of Zoologists. Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/icz10.2021.07.

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The article presents the results on qualitative and quantitative indicators of phytoplankton of the Prut River lower sector within the Republic of Moldova in 2018-2020. In phytoplankton compositions 72 species were identified. Seasonal and long-term patterns of phytoplankton development have been established in Prut River lower sector. The numbers of phytoplankton changed within the limits 1,06 to 20,32 mln. cell/l, with biomass 1,23-21,64 g/m3. The values of saprobic indexes, estimated on the basis of species-indicators (52 species) from phytoplankton composition, which are in proportion of 58% typically β-mezosaprobic, confirm the following: the water quality of lower Prut River sector in the period 2018-2020 was satisfactory for the development of phytoplankton and was attributed mainly to II-III (good-moderately polluted) quality classes.
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Čađo, Snežana, Nena Jelača, Tamara Važić, Tatjana Dopudja Glišić i Zoran Stojanović. "PHYTOPLANKTON OF THE DANUBE RIVER AT THE BORDER SITE BEZDAN". W 53rd Annual Conference of the Serbian Water Pollution Control Society. SERBIAN WATER POLLUTION CONTROL SOCIETY, 2024. http://dx.doi.org/10.46793/voda24.049c.

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The paper presents the results of a three-year study of composition and dynamics of the phytoplankton community and physico-chemical characteristics of the Danube River, at the border site with Hungary near Bezdan. During winter and autumn period, an increase of primary and secondary nutrients’ concentrations were recorded, and a decrease during the vegetation period which was directly related to phytoplankton production. Phytoplankton was characterized by a high floristic diversity, with the presence of 164 taxa from 7 algal divisions and Cyanobacteria, of which silicate and green algae are the most represented, with an absolute dominance of centric diatom species (abundance and biomass). The highest phytoplankton production was observed in the spring period, during low water level conditions, lower concentrations of suspended solids in the water and increased transparency. During 2022 absolute maximums of phytoplankton abundance and biomass were recorded, when intensive phytoplankton production was continued throughout the summer.
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Ungureanu, Laurentia, Daria Tumanova i Grigore Ungureanu. "Dezvoltarea fitoplanctonului fluviului Nistru și lacului de acumulare Dubăsari în condițiile impactului factorilor naturali și antropici". W Simpozion "Modificări funcționale ale ecosistemelor acvatice în contextul impactului antropic și al schimbărilor climatice". Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/9789975151979.07.

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The article presents the results of study of qualitative and quantitative indicators of phytoplankton of the Dniester River within the Republic of Moldova and Dubasari reservoir in 2020. In phytoplankton compositions of the Dniester River were identified 64 species, Dubasari Lake – 56 species. The numbers of phytoplankton changed within the limits 0,39 to 16,99 mln. cel/l with biomass 0,7-17,19 g/m3 in Dniester River and in Dubasari Lake – 3,47-14,83 mln. cel/l with biomass 4,76-11,29 g/m3. The values of saprobic indexes, estimated on the basis of species-indicators from phytoplankton composition, which are in proportion of 60% typically β-mezosaprobic, confirm the following: the water quality of Dniester River and Dubasari Lake in the period of 2020 year was satisfactory for the development of phytoplankton and was attributed mainly to II-III (good-moderately polluted) quality classes.
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Mirto, M., L. Conte, G. Aloisio, C. Distante, P. Vecchio i A. De Giovanni. "Measuring cells in phytoplankton images". W 2015 International Conference on High Performance Computing & Simulation (HPCS). IEEE, 2015. http://dx.doi.org/10.1109/hpcsim.2015.7237085.

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Novikova, Nina I., Hannah Matthews, Isabelle Williams, Mary A. Sewell, Michel Nieuwoudt, M. Cather Simpson i Neil G. R. Broderick. "Identifying Phytoplankton Using Raman Spectroscopy". W Optics and Photonics for Sensing the Environment. Washington, D.C.: OSA, 2021. http://dx.doi.org/10.1364/es.2021.ew4g.4.

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Chernyavskaya, Elina A. "Laser Remote Sensing of Phytoplankton". W The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.ctuk6.

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Tumanova, Daria, i Laurenţia Ungureanu. "Specii invazive de alge in componenţa fitoplanctonului ecosistemelor acvatice din Republica Moldova". W International symposium ”Actual problems of zoology and parasitology: achievements and prospects” dedicated to the 100th anniversary from the birth of academician Alexei Spassky. Institute of Zoology, Republic of Moldova, 2018. http://dx.doi.org/10.53937/9789975665902.111.

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The article presents the results of the investigations on diversity and quantitative structure of phytoplankton of different types of aquatic ecosystems within the Republic of Moldova during 2010-2015. The invasive species (native) Merismopedia tenuissima Lemmermann 1898, Synechocystis aquatilis Sauvageau 1892 and Aphanizomenon flos-aquae Ralfs ex Bornet & Flahault 1886 from phytoplankton composition were identified. The potential growth of these phytoplankton species can lead to algal blooms. Following our investigations, it was established that the biomass of invasive Cyanophyta planktonic species during their intense development can account for about 80-90% of the number of species and for about 40-60% of the phytoplankton biomass.
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Raporty organizacyjne na temat "Phytoplankton"

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Banse, Karl. Phytoplankton Production Biology. Fort Belvoir, VA: Defense Technical Information Center, sierpień 2003. http://dx.doi.org/10.21236/ada629646.

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Seifert, Miriam, Claudia Hinrichs, Judith Hauck i Christoph Völker. New / improved model parametrizations for responses in phytoplankton growth and calcification to changes in alkalinity implemented. OceanNets, marzec 2023. http://dx.doi.org/10.3289/oceannets_d4.5.

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Global biogeochemical ocean models that are currently in place to investigate alkalinity enhancement at a global scale do usually not consider the effects of a changing carbonate system on phytoplankton. We introduce new and modified parameterizations of phytoplankton carbonate systems sensitivities into the biogeochemistry model REcoM. We then compare phytoplankton biomass and net primary production at different atmospheric CO2 concentrations to results from other deliverables (D5.3, 5.6, 5.7) based on experiments and models. The resilience of phytoplankton biomass towards low CO2 concentrations in our model compares well with the results of mesocosm experiments. Or model results differ in the phytoplankton responses compared to the results of a 1D biogeochemical model that employs similar parameterizations regarding the effects on calcifying phytoplankton and total net primary production, which we explain primarily with differences in the spatial scales and phytoplankton communities investigated.
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Banse, Karl. Production Biology of Phytoplankton. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 1997. http://dx.doi.org/10.21236/ada627666.

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Banse, Karl. Production Biology of Phytoplankton. Fort Belvoir, VA: Defense Technical Information Center, sierpień 2002. http://dx.doi.org/10.21236/ada628844.

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Banse, Karl. Production Biology of Phytoplankton. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 1999. http://dx.doi.org/10.21236/ada629748.

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Banse, Karl. Production Biology of Phytoplankton. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2001. http://dx.doi.org/10.21236/ada626715.

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Anderson, Donald M. Phytoplankton Blooms and Coastal Physical Processes. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1993. http://dx.doi.org/10.21236/ada280646.

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Perry, Mary J. Instrumentation in Support of Phytoplankton Experimentation. Fort Belvoir, VA: Defense Technical Information Center, sierpień 2001. http://dx.doi.org/10.21236/ada627727.

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Kling, H. J. Fossil and modern phytoplankton from Lake Winnipeg. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207518.

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Baker, Cynthia. Phytoplankton in Mt. St. Helens Lakes, Washington. Portland State University Library, styczeń 2000. http://dx.doi.org/10.15760/etd.6893.

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