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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 74 (1983), S. 151-160 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Particle rejection behavior was studied for late-stage copepodites and adult females of Calanus pacificus collected from La Jolla Bay, California (32oN; 117oW) in spring and summer of both 1979 and 1982. Several particles of approximately the same size were offered, both singly and in mixtures, to C. pacificus. In the first set of experiments the copepods were presented with choices between a diatom, Thalassiosira weissflogii (13.1 μm equivalent spherical diam), and polystyrene beads of two sizes (11.1 and 16.5 μm diam). In the second set of experiments they were presented with choices between one of two dinoflagellates, Gyrodinium dorsum (27 μm diam) or Peridinium trochoideum (22 μm diam), and polystyrene beads of three sizes (15, 20 and 25 μm diam). When offered mixtures of cells and beads, the filtration and ingestion rates were significantly greater on the cells than on the beads, irrespective of bead size. We also find that C. pacificus demonstrates a clear preference for G. dorsum relative to P. trochoideum. Our results cannot be explained by a model of passive, size-selective feeding.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 1983-01-01
    Print ISSN: 0025-3162
    Electronic ISSN: 1432-1793
    Topics: Biology
    Published by Springer
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  • 3
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    Unknown
    In:  CASI
    Publication Date: 2016-06-07
    Description: The Pilot Land Data System (PLDS) is a multi-institutional effort directed towards solving the data access and management needs of scientists studying the land surface. Some of the hardware and software, which are now available, are reviewed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote Sensing Information Sciences Research Group, Santa Barbara Information Sciences Research Group, year 3; 4 p
    Format: application/pdf
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  • 4
    Publication Date: 2016-06-07
    Description: Remote sensing uses a wide variety of techniques and methods. Resulting data are analyzed by man and machine, using both analog and digital technology. The newest and most important initiatives in the U. S. civilian space program currently revolve around the space station complex, which includes the core station as well as co-orbiting and polar satellite platforms. This proposed suite of platforms and support systems offers a unique potential for facilitating long term, multidisciplinary scientific investigations on a truly global scale. Unlike previous generations of satellites, designed for relatively limited constituencies, the space station offers the potential to provide an integrated source of information which recognizes the scientific interest in investigating the dynamic coupling between the oceans, land surface, and atmosphere. Earth scientist already face problems that are truly global in extent. Problems such as the global carbon balance, regional deforestation, and desertification require new approaches, which combine multidisciplinary, multinational research teams, employing advanced technologies to produce a type, quantity, and quality of data not previously available. The challenge before the international scientific community is to continue to develop both the infrastructure and expertise to, on the one hand, develop the science and technology of remote sensing, while on the other hand, develop an integrated understanding of global life support systems, and work toward a quantiative science of the biosphere.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote Sensing Information Sciences Research Group, Santa Barbara Information Sciences Research Group, year 3; 13 p
    Format: application/pdf
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  • 5
    Publication Date: 2016-06-07
    Description: Concerns about environmental effects of large scale deforestation have prompted efforts to map forests over large areas using various remote sensing data and image processing techniques. Basic research on the spectral characteristics of forest vegetation are required to form a basis for development of new techniques, and for image interpretation. Examination of LANDSAT data and image processing algorithms over a portion of boreal forest have demonstrated the complexity of relations between the various expressions of forest canopies, environmental variability, and the relative capacities of different image processing algorithms to achieve high classification accuracies under these conditions. Airborne Imaging Spectrometer (AIS) data may in part provide the means to interpret the responses of standard data and techniques to the vegetation based on its relatively high spectral resolution.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: JPL Proc. of the Airborne Imaging Spectrometer Data Anal. Workshop; p 141-145
    Format: application/pdf
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  • 6
    Publication Date: 2016-03-09
    Description: The basic design criteria and operating characteristics of a Global Resources Information System GRIS are defined. Researchers are compiling background material and aiding JPL personnel in this project definition phase of GRIS. A bibliography of past studies and current work on large scale information systems is compiled. The material in this bibliography will be continuously updated throughout the lifetime of this grant. Project management, systems architecture, and user applications are also discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Activities of the Remote Sensing Inform. Sci. Res. Group; 30 p
    Format: text
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  • 7
    Publication Date: 2016-03-09
    Description: An annotated bibliography of work concerning geophysical data management systems is presented. Major topics under investigation include data acquisition, data storage, long term data preservation, architecture, preprocessing, hydrology, land resources, geology, meteorology, and applications of remote sensing techniques.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Activities of the Remote Sensing Inform. Sci. Res. Group; 18 p
    Format: text
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  • 8
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    In:  CASI
    Publication Date: 2016-03-09
    Description: Project development and planning for a Pilot Land Data System (PLDS) are discussed. The PLDS supplies basic information, data management, and data processing capabilities to the land research community. Topics on design and implementation, user requirements, and project management are examined. The scenarios developed thusfar are also included.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Activities of the Remote Sensing Inform. Sci. Res. Group; 6 p
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  • 9
    Publication Date: 2019-06-28
    Description: Research continues to focus on improving the type, quantity, and quality of information which can be derived from remotely sensed data. The focus is on remote sensing and application for the Earth Observing System (Eos) and Space Station, including associated polar and co-orbiting platforms. The remote sensing research activities are being expanded, integrated, and extended into the areas of global science, georeferenced information systems, machine assissted information extraction from image data, and artificial intelligence. The accomplishments in these areas are examined.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-179769 , NAS 1.26:179769
    Format: application/pdf
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  • 10
    Publication Date: 2019-06-28
    Description: Advances in remote sensing techniques are discussed. The benefits possible to remote sensing with the new Earth Observing System, which is composed of the Space Station and coorbiting and polar satellite platforms, are examined. Current changes in the remote sensing field, which involve a change from an industrial society to an informational society, force technology to high technology with high touch, short term to long term, centralized to decentralized, hierarchies to networks, and either/or to multiple option systems are studied. The explanatory and objective types of analyses for investigating biophysical, geochemical, and socioeconomic processes are described; the procedures include: morphometric, cause and effect, temporal and functional and ecological system analyses, inventory, mapping, monitoring, and modeling.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Geocarto International; 1, 19
    Format: text
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