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  • 1
    facet.materialart.
    Unknown
    Annual dynamics of global land cover and its long-term changes from 1982 to 2015, link to GeoTIFF files (2019)
    PANGAEA
    In:  Supplement to: Liu, Han; Gong, Peng; Wang, Jie; Clinton, Nicholas; Bai, Yuqi; Liang, Shunlin (in review): Annual Dynamics of Global Land Cover and its Long-term Changes from 1982 to 2015. Earth System Science Data Discussions, https://doi.org/10.5194/essd-2019-23
    Details
    Publication Date: 2024-02-16
    Description: Land cover (LC) is an important terrestrial variable and key information for understanding the interaction between human activities and global change. As the cause and result of global environmental change, land cover change (LCC) influences the global energy balance and biogeochemical cycles. Continuous and dynamic monitoring of global LC is urgently needed. Effective monitoring and comprehensive analysis of LCC at the global scale is rare. Using the latest version of GLASS (The Global Land Surface Satellite) CDRs (Climate Data Records) from 1982 to 2015, we built the first set of CDRs to record the annual dynamics of global land cover (GLASS-GLC) at 5 km resolution using the Google Earth Engine (GEE) platform. Compared to earlier global LC products, GLASS-GLC is characterized by high consistency, more detailed classes, and longer temporal coverage. The average overall accuracy is 85 %. We implemented a systematic uncertainty analysis at the global scale. In addition, we carried out a comprehensive spatiotemporal pattern analysis. Significant changes and patterns at various scales were found, including deforestation and agricultural land expansion in the tropics, afforestation and forest expansion in northern high latitudes, land degradation in Asian grassland and reclamation in northeast China, etc. A global quantitative analysis of human factors showed that the average human impact level in areas with significant LCC was about 25.49 %. The anthropogenic influence has a strong correlation with the noticeable Earth greening. Based on GLASS-GLC, we can conduct long-term LCC analysis, improve our understanding of global environmental change, and mitigate its negative impact. GLASS-GLC will be further applied in Earth system modeling in order to facilitate research on global carbon and water cycling, vegetation dynamics and climate change.
    Keywords: Classification; Climate data records; Earth system model; GLASS; Global land cover; Google Earth Engine; Land cover; Land cover change; Land cover mapping; Long-term changes; Spatiotemporal pattern; Time series
    Type: Dataset
    Format: application/zip, 44.6 MBytes
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    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Annual dynamics of global land cover and its long-term changes from 1982 to 2015, link to GeoTIFF files (2020)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Description: Land cover is the physical evidence on the surface of the Earth. As the cause and result of global environmental change, land cover change (LCC) influences the global energy balance and biogeochemical cycles. Continuous and dynamic monitoring of global LC is urgently needed. Effective monitoring and comprehensive analysis of LCC at the global scale are rare. With the latest version of GLASS (The Global Land Surface Satellite) CDRs (Climate Data Records) from 1982 to 2015, we built the first record of 34-year long annual dynamics of global land cover (GLASS-GLC) at 5 km resolution using the Google Earth Engine (GEE) platform. Compared to earlier global LC products, GLASS-GLC is characterized by high consistency, more detailed, and longer temporal coverage. The average overall accuracy for the 34 years each with 7 classes, including cropland, forest, grassland, shrubland, tundra, barren land, and snow/ice, is 82.81 % based on 2431 test sample units. We implemented a systematic uncertainty analysis and carried out a comprehensive spatiotemporal pattern analysis. Significant changes at various scales were found, including barren land loss and cropland gain in the tropics, forest gain in northern hemisphere and grassland loss in Asia, etc. A global quantitative analysis of human factors showed that the average human impact level in areas with significant LCC was about 25.49 %. The anthropogenic influence has a strong correlation with the noticeable vegetation gain, especially for forest. Based on GLASS-GLC, we can conduct long-term LCC analysis, improve our understanding of global environmental change, and mitigate its negative impact. GLASS-GLC will be further applied in Earth system modeling to facilitate research on global carbon and water cycling, vegetation dynamics, and climate change. This GLASS-GLC data set is related to the paper at doi:10.5194/essd-2019-23. It consists of one readme file and 34 GeoTIFF files of annual 5 km global maps from 1982 to 2015 in a WGS 84 projection.
    Keywords: Classification; Climate data records; Earth system model; GLASS; Global land cover; Google Earth Engine; Land cover; Land cover change; Land cover mapping; Long-term changes; Spatiotemporal pattern; Time series
    Type: Dataset
    Format: application/zip, 44.6 MBytes
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  • 3
    Electronic Resource
    Electronic Resource
    Phosphine-Participated Cluster Formation: Syntheses, Structures, and Magnetic Properties of Tri- and Tetracobalt Phosphine Complexes of o-Mercaptophenol (H2mp), Co3(mp)2(Hmp)2(PEt3)3 and Co4(mp)4(PBun3)3Cl(MeOH) (1994)
    s.l. : American Chemical Society
    Inorganic chemistry 33 (1994), S. 3770-3776 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00095a020
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  • 4
    Electronic Resource
    Electronic Resource
    Compounds from Danshen. Part 7. Regioselective introduction of carbon-3 substituents to 5-alkyl-7-methoxy-2-phenylbenzo[b]furans: synthesis of a novel adenosine A1 receptor ligand and its derivatives (1992)
    s.l. : American Chemical Society
    The @journal of organic chemistry 57 (1992), S. 7248-7257 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00052a046
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  • 5
    Electronic Resource
    Electronic Resource
    Optical rotatory dispersion and circular dichroism (1968)
    s.l. : American Chemical Society
    Chemical reviews 68 (1968), S. 525-540 
    Details
    ISSN: 1520-6890
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/cr60255a001
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  • 6
    Electronic Resource
    Electronic Resource
    Effects of Environmental Factors on Egg Development and Hatching of Pacific Halibut Hippoglossus stenolepis (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 25 (1994), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Eggs of Pacific halibut were incubated under various environmental conditions. Optimum hatching occurred over a temperature range from 6 C to 8 C, whereas temperatures of 3, 10, and 11 C were lethal. Development time from fertilization to 50% hatching varied from 250 h (9 C) to 320 h (6.5 C). Salinity effects on hatching were not as critical as temperature, as long as eggs were floating during the incubation period. Light intensity between 5 and 15 lux did not affect hatching success, but high light intensity (15 lux) and red and blue light (5 lux) produced high levels of larval abnormality. Simulated transport of unfertilized eggs indicated that the eggs can be safely moved and that fertilization rate is acceptable during the first 12 h after collection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1994.tb00197.x
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  • 7
    Electronic Resource
    Electronic Resource
    Neutral Buoyancy Salinity of Pacific Halibut Hippoglossus stenolepis Eggs and Larvae (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 24 (1993), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Samples of halibut eggs in nature have led to theories that development occurs near the sea bed and, alternatively, well up in the water column. Resolution of the conflicting theories and information which should assist culturists in providing the proper environmental conditions for egg development and hatching were the subjects of this study. The neutral buoyancy salinity (NBS) of Pacific halibut eggs and larvae ranged between 29.8–34%. Eggs and larvae with higher NBS (〉 35%) were usually abnormal or stressed. Thus, eggs found near the seabed may be nonviable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1993.tb00578.x
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  • 8
    Electronic Resource
    Electronic Resource
    Changes in Plasma Concentrations of Sex Steroids in Adult Pacific Halibut, Hippoglossus stenolepis (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 22 (1991), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Blood samples were collected from captive Pacific halibut, Hippoglossus stenolepis, at intervals of about six weeks from early December 1986 to late November 1987. Concentrations of plasma androgen and estradiol-17β were determined by radioimmunoassay. The plasma concentrations of steroid were highest during autumn and winter in halibut that matured during late winter. The concentrations of steroids in samples collected in December were above 2 ng/mL (estradiol) or 1 ng/mL (androgen) in maturing females and below 0.5 ng/mL for both steroids in non-maturing females. The levels of steroids decreased rapidly about one month before spawning. In a mature male, androgen began to rise in August and November, and reached a peak of 7 ng/mL in early December. One month before spawning, the androgen concentration fell to 0.16 ng/mL. Estradiol concentrations were detectable in the male and varied little during the year. In immature fish, neither androgen nor estradiol changed significantly throughout the year. These results suggest that the concentrations of estradiol or androgen measured in blood samples taken during December may be used to determine the sex and state of maturation of Pacific halibut.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1991.tb00713.x
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  • 9
    Electronic Resource
    Electronic Resource
    1,2-Bis(8-quinolylthiomethyl)benzene (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. e348-e349 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title potentially tetradentate N,S,S,N-donor ligand, C26H20N2S2, has been structurally characterized. The two S atoms adopt a trans conformation, lying above and below the benzene ring. The two quinoline rings are planar, with one parallel to the benzene ring and the other nearly perpendicular to it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270100009124
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  • 10
    Electronic Resource
    Electronic Resource
    Early Larval Growth of Pacific Halibut Hippoglossus stenolepis (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 24 (1993), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Growth of Pacific halibut Hippoglossus stenolepis larvae was studied in the laboratory during 1989 and 1991. Larvae increased in length from 6.3 mm at hatching to 9.9 mm 20 d post-hatch. The average daily length increment was 0.17 mm. Dry weight of the larvae increased from an average of 210 μg at hatching to 570 μ g on day 20, providing a specific growth rate of 4.99. During the same period, mean yolk sac weight decreased from 1,390 μ g to 646 μ g, resulting in a yolk to body conversion efficiency of 48.5%. At hatching, the larval body made up only 13% of total dry weight. On day 20, the larval body made up 46.9% of the total weight. Larvae started feeding at a length of 12 mm after about 90% of their yolk sac had been absorbed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1993.tb00577.x
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