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  • 2015-2019  (44)
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  • 1
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    Stoichiometric and sterol responses of dinoflagellates to changes in temperature, nutrient supply in the exponential phase (2019)
    PANGAEA
    In:  Supplement to: Chen, Mengna; Bi, Rong; Chen, Xi; Ding, Yang; Zhang, Hailong; Li, Li; Zhao, Meixun (2019): Stoichiometric and sterol responses of dinoflagellates to changes in temperature, nutrient supply and growth phase. Algal Research, 42, 101609, https://doi.org/10.1016/j.algal.2019.101609
    Details
    Publication Date: 2023-06-19
    Description: We investigated the responses of elemental stoichiometry (POC, PON) and sterol contents (brassicasterol, dinosterol) in three dinoflagellate species (Prorocentrum donghaiense, Prorocentrum minimum and Karenia mikimotoi) to changes in temperatures (15, 20 and 25 °C), N:P supply ratios (molar ratios 10:1, 24:1 and 63:1) in the exponential phase in batch culture experiments.
    Keywords: 24-Methylcholesta-5,22E-dien-3beta-ol per cell; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol per cell; Carbon; Dinoflagellates; nitrogen; Nitrogen, organic, particulate/Carbon, organic, particulate ratio; Particulate organic carbon production per cell; Particulate organic nitrogen production per cell; Ratio; Species; sterols; Temperature, technical; Treatment; warming
    Type: Dataset
    Format: text/tab-separated-values, 800 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Water-mass control on phytoplankton spatiotemporal variations (2018)
    PANGAEA
    In:  Supplement to: Bi, Rong; Chen, Xi; Zhang, Jing; Ishizaka, Joji; Zhuang, Yanpei; Jin, Haiyan; Zhang, Hailong; Zhao, Meixun (2018): Water Mass Control on Phytoplankton Spatiotemporal Variations in the Northeastern East China Sea and the Western Tsushima Strait Revealed by Lipid Biomarkers. Journal of Geophysical Research: Biogeosciences, 123(4), 1318-1332, https://doi.org/10.1002/2017JG004340
    Details
    Publication Date: 2023-11-07
    Description: Continental margin ecosystems in the western North Pacific Ocean are subject to strong climate forcing and anthropogenic impacts. To evaluate mechanisms controlling phytoplankton biomass and community structure variations in marginal sea-open ocean boundary regions, brassicasterol, dinosterol and C37 alkenones were measured in suspended particles in summer and autumn from 2012 to 2013 in the northeastern East China Sea and the western Tsushima Strait (NEECS-WTS). In summer, the concentrations of brassicasterol (40 - 1535 ng L-1) and dinosterol (4.2 - 94 ng L-1) were higher in the southwest of Cheju Island, while C37 alkenones (0 - 30 ng L-1) were higher in the south of Cheju Island. In autumn, brassicasterol (12 - 106 ng L-1), dinosterol (2.4 - 21 ng L-1) and C37 alkenones (0.7 - 7.0 ng L-1) were higher in the southwest of Cheju Island and the WTS, and higher C37 alkenones also occurred in the Okinawa Trough. Correlation analysis of biomarkers and environmental conditions (temperature, salinity and inorganic nutrient concentrations) clearly demonstrated that phytoplankton biomass and community structure variations can be well elucidated by water masses as indexed by temperature and salinity. High nutrients from the Changjiang River were the main cause of high biomass in summer, while nutrients from subsurface water were likely the key factor regulating phytoplankton biomass in open ocean water stations in autumn. This study indicates that mechanisms controlling phytoplankton biomass in marginal sea-open ocean boundary regions should be classified by various water masses with different nutrient concentrations, instead of by geography.
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    (Figure 6) Physical oceanography and nutrients across the water column in the northeastern East China Sea and the western Tsushima Strait (2018)
    PANGAEA
    Details
    Publication Date: 2023-11-07
    Keywords: Chlorophyll a; DEPTH, water; East China Sea; ECS_1; ECS_11; ECS_12; ECS_13; ECS_14; ECS_17; ECS_18; ECS_2; ECS_22; ECS_23; ECS_24; ECS_3; ECS_7; ECS_8; ECS_9; Event label; Japan Sea; Latitude of event; Longitude of event; MULT; Multiple investigations; Nitrogen, inorganic, dissolved; Phosphorus, inorganic, dissolved; Salinity; Silicon; Temperature, water; Yellow Sea
    Type: Dataset
    Format: text/tab-separated-values, 862 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    (Figure 5) Temperature, salinity and density across the water column in the northeastern East China Sea and the western Tsushima Strait (2018)
    PANGAEA
    Details
    Publication Date: 2023-11-07
    Keywords: Density, sigma-theta (0); DEPTH, water; East China Sea; ECS_1; ECS_11; ECS_12; ECS_13; ECS_14; ECS_17; ECS_18; ECS_2; ECS_22; ECS_23; ECS_24; ECS_3; ECS_7; ECS_8; ECS_9; Event label; Japan Sea; Latitude of event; Longitude of event; MULT; Multiple investigations; Salinity; Temperature, water, potential; Yellow Sea
    Type: Dataset
    Format: text/tab-separated-values, 7950 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    (Figure 2-4) Physical oceanography, nutrients and lipid biomarkers in surface waters of the northeastern East China Sea and the western Tsushima Strait (2018)
    PANGAEA
    Details
    Publication Date: 2023-11-07
    Keywords: 24-Methylcholesta-5,22E-dien-3beta-ol of water; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol of water; Alkenones/lipid biomarkers ratio; Alkenones of water; Brassicasterol/lipid biomarkers ratio; Chlorophyll a; Dinosterol/lipid biomarkers ratio; East China Sea; ECS_1; ECS_11; ECS_12; ECS_13; ECS_14; ECS_17; ECS_18; ECS_2; ECS_22; ECS_23; ECS_24; ECS_3; ECS_7; ECS_8; ECS_9; ECS_A07; ECS_B2; ECS_Buoy-1; ECS_Buoy-2; ECS_CK-10; ECS_CK-3; ECS_CK-6; ECS_F06; ECS_F07; ECS_F08; ECS_F09; ECS_F10; ECS_F11; ECS_F12; ECS_FP01; ECS_FP02; ECS_FP03; ECS_FP04; ECS_FP06; ECS_GN-1; ECS_GN-5; ECS_GS-2; ECS_GS-6; ECS_GW-2; ECS_GW-7; ECS_HR10; ECS_HR11; ECS_HR2; ECS_HR6; ECS_HR8; ECS_HR9; ECS_I-2; ECS_LS1; ECS_LS2; ECS_MC1; ECS_MC4; ECS_MT4; ECS_MT5; ECS_P07; ECS_P08; ECS_P09; ECS_P11; ECS_TE-2; ECS_TE-5; ECS_TE-8; ECS_TW-1; ECS_TW-3; ECS_TW-6; ECS_YS1; ECS_YS2; ECS_Z3; Event label; Japan Sea; Latitude of event; Longitude of event; MULT; Multiple investigations; Nitrogen, inorganic, dissolved; Phosphorus, inorganic, dissolved; Salinity; Season; Silicon; Sum lipid biomarkers of water; Temperature, water; Yellow Sea
    Type: Dataset
    Format: text/tab-separated-values, 867 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Water-mass control on phytoplankton spatiotemporal variations in the northeastern East China Sea and the western Tsushima Strait revealed by lipid biomarkers (2018)
    AGU (American Geophysical Union) | Wiley
    In:  Journal of Geophysical Research: Biogeosciences, 123 (4). pp. 1318-1332.
    Details
    Publication Date: 2020-01-02
    Description: Continental margin ecosystems in the western North Pacific Ocean are subject to strong climate forcing and anthropogenic impacts. To evaluate mechanisms controlling phytoplankton biomass and community structure variations in marginal sea‐open ocean boundary regions, brassicasterol, dinosterol and C37 alkenones were measured in suspended particles in summer and autumn from 2012 to 2013 in the northeastern East China Sea and the western Tsushima Strait (NEECS‐WTS). In summer, the concentrations of brassicasterol (40 ‐ 1535 ng L‐1) and dinosterol (4.2 ‐ 94 ng L‐1) were higher in the southwest of Cheju Island, while C37 alkenones (0 ‐ 30 ng L‐1) were higher in the south of Cheju Island. In autumn, brassicasterol (12 ‐ 106 ng L‐1), dinosterol (2.4 ‐ 21 ng L‐1) and C37 alkenones (0.7 – 7.0 ng L‐1) were higher in the southwest of Cheju Island and the WTS, and higher C37 alkenones also occurred in the Okinawa Trough. Correlation analysis of biomarkers and environmental conditions (temperature, salinity and inorganic nutrient concentrations) clearly demonstrated that phytoplankton biomass and community structure variations can be well elucidated by water masses as indexed by temperature and salinity. High nutrients from the Changjiang River were the main cause of high biomass in summer, while nutrients from subsurface water were likely the key factor regulating phytoplankton biomass in open ocean water stations in autumn. This study indicates that mechanisms controlling phytoplankton biomass in marginal sea‐open ocean boundary regions should be classified by various water masses with different nutrient concentrations, instead of by geography.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    DOI: 10.1002/2017JG004340
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
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    Remote Sensing, Vol. 8, Pages 385: Mapping Deforestation and Forest Degradation Patterns in Western Himalaya, Pakistan (2016)
    MDPI Publishing
    Details
    Publication Date: 2016-05-07
    Description: The Himalayan mountain forest ecosystem has been degrading since the British ruled the area in the 1850s. Local understanding of the patterns and processes of degradation is desperately required to devise management strategies to halt this degradation and provide long-term sustainability. This work comprises a satellite image based study in combination with national expert validation to generate sub-district level statistics for forest cover over the Western Himalaya, Pakistan, which accounts for approximately 67% of the total forest cover of the country. The time series of forest cover maps (1990, 2000, 2010) reveal extensive deforestation in the area. Indeed, approximately 170,684 ha of forest has been lost, which amounts to 0.38% per year clear cut or severely degraded during the last 20 years. A significant increase in the rate of deforestation is observed in the second half of the study period, where much of the loss occurs at the western borders along with Afghanistan. The current study is the first systematic and comprehensive effort to map changes to forest cover in Northern Pakistan. Deforestation hotspots identified at the sub-district level provide important insight into deforestation patterns, which may facilitate the development of appropriate forest conservation and management strategies in the country.
    Electronic ISSN: 2072-4292
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by MDPI Publishing
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    PAPER CURRENT
  • 8
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    Motility characteristics in the transition zone in Gastroesophageal Reflux Disease (GORD) patients (2016)
    BioMed Central
    Details
    Publication Date: 2016-08-31
    Description: Defects in distal oesophageal peristalsis was thought to be an indication of incomplete bolus transit (BT). However, the role of transition zone (TZ) defects in the BT in gastroesophageal reflux disease (GORD)...
    Electronic ISSN: 1471-230X
    Topics: Medicine
    Published by BioMed Central
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    PAPER CURRENT
  • 9
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    Sensors, Vol. 16, Pages 1501: Semantic Framework of Internet of Things for Smart Cities: Case Studies (2016)
    MDPI Publishing
    In: Sensors
    Details
    Publication Date: 2016-09-15
    Description: In recent years, the advancement of sensor technology has led to the generation of heterogeneous Internet-of-Things (IoT) data by smart cities. Thus, the development and deployment of various aspects of IoT-based applications are necessary to mine the potential value of data to the benefit of people and their lives. However, the variety, volume, heterogeneity, and real-time nature of data obtained from smart cities pose considerable challenges. In this paper, we propose a semantic framework that integrates the IoT with machine learning for smart cities. The proposed framework retrieves and models urban data for certain kinds of IoT applications based on semantic and machine-learning technologies. Moreover, we propose two case studies: pollution detection from vehicles and traffic pattern detection. The experimental results show that our system is scalable and capable of accommodating a large number of urban regions with different types of IoT applications.
    Electronic ISSN: 1424-8220
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Published by MDPI Publishing
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    PAPER CURRENT
  • 10
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    Remote Sensing, Vol. 8, Pages 472: Evaluation of IMERG and TRMM 3B43 Monthly Precipitation Products over Mainland China (2016)
    MDPI Publishing
    Details
    Publication Date: 2016-06-03
    Description: As the successor of the Tropical Rainfall Measuring Mission (TRMM), the Global Precipitation Measurement (GPM) mission significantly improves the spatial resolution of precipitation estimates from 0.25° to 0.1°. The present study analyzed the error structures of Integrated Multisatellite Retrievals for GPM (IMERG) monthly precipitation products over Mainland China from March 2014 to February 2015 using gauge measurements at multiple spatiotemporal scales. Moreover, IMERG products were also compared with TRMM 3B43 products. The results show that: (1) overall, IMERG can capture the spatial patterns of precipitation over China well. It performs a little better than TRMM 3B43 at seasonal and monthly scales; (2) the performance of IMERG varies greatly spatially and temporally. IMERG performs better at low latitudes than at middle latitudes, and shows worse performance in winter than at other times; (3) compared with TRMM 3B43, IMERG significantly improves the estimation accuracy of precipitation over the Xinjiang region and the Qinghai-Tibetan Plateau, especially over the former where IMERG increases Pearson correlation coefficient by 0.18 and decreases root-mean-square error by 54.47 mm for annual precipitation estimates. However, most IMERG products over these areas are unreliable; and (4) IMERG shows poor performance in winter as TRMM 3B43 even if GPM improved its ability to sense frozen precipitation. Most of them over North China are unreliable during this period.
    Electronic ISSN: 2072-4292
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by MDPI Publishing
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    PAPER CURRENT
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