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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 83 (1981), S. 523-524 
    ISSN: 1573-5117
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 94 (1982), S. 103-104 
    ISSN: 1573-5117
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 400 (1999), S. 63-73 
    ISSN: 1573-5117
    Keywords: seagrasses ; algae ; zonation ; remote sensing ; Thematic Mapper ; Kenya
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Little information has been published on space-borne remote sensing of seagrasses, and no information is available about the distribution of seagrasses and algae in East Africa. Through satellite remote sensing this study investigates the distribution of these plants along a southern section of the Kenyan coast. The visible bands (red, green and blue) and the near infra-red band of a Landsat Thematic Mapper image acquired in 1992 were combined in order to detect seagrasses and algae in 10 sectors along the section of the coast. Ground truthing was done at three locations along the same section. Results indicate that two distinct zones of vegetation can be recognised, and ground truthing reveals their identity is rocky substrate with mostly algae and seagrasses, respectively. The extent of the vegetation in the two zones has been quantified in square kilometres for the 10 sectors. However, care is needed in the interpretation of the satellite images when dealing with artefacts such as clouds. The zonation of the algal vegetation is discussed for one of the study sites.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 400 (1999), S. 63-73 
    ISSN: 1573-5117
    Keywords: seagrasses ; algae ; zonation ; remote sensing ; Thematic Mapper ; Kenya
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Little information has been published on space-borne remote sensing of seagrasses, and no information is available about the distribution of seagrasses and algae in East Africa. Through satellite remote sensing this study investigates the distribution of these plants along a southern section of the Kenyan coast. The visible bands (red, green and blue) and the near infra-red band of a Landsat Thematic Mapper image acquired in 1992 were combined in order to detect seagrasses and algae in 10 sectors along the section of the coast. Ground truthing was done at three locations along the same section. Results indicate that two distinct zones of vegetation can be recognised, and ground truthing reveals their identity is rocky substrate with mostly algae and seagrasses, respectively. The extent of the vegetation in the two zones has been quantified in square kilometres for the 10 sectors. However, care is needed in the interpretation of the satellite images when dealing with artefacts such as clouds. The zonation of the algal vegetation is discussed for one of the study sites.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 5
    ISSN: 1573-5125
    Keywords: Taxonomy ; biodiversity ; biogeography ; algae ; Ulvophyceae ; Chlorophyta ; Caulerpa ; ecads ; ecological phenotypes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In the present paper 29 species ofCaulerpa from Indonesia, the Philippines and Papua New Guinea are listed, with reference to their distribution and occurrence of ecological phenotypes (ecads). Other names ofCaulerpa taxa recorded for Malesia in literature are dealt with in the paragraph on excluded and changed names. The variability and nomenclature of mainly the species recorded from Indonesia are discussed, especially regarding the implications of the recognition of ecads in several species. The ecads in the sectionSedoideae are discussed as an example of use of the designation ’ecad’ for a number of growth forms. Biogeography of the genusCaulerpa is discussed with focus on areas of high biodiversity, both inside and outside Malesia, followed by a discussion on biodiversity assessment. It is suggested that the genusCaulerpa is a good indicator for the quantitative assessment of biodiversity. The need for a modern world-monograph of this genus is stressed. Such a monograph can be a stimulus for ecosystem studies ofCaulerpa stands.
    Type of Medium: Electronic Resource
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