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  • Springer  (794)
  • PANGAEA  (137)
  • American Association for the Advancement of Science (AAAS)  (117)
  • 2015-2019  (690)
  • 2000-2004  (358)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Landscape ecology 15 (2000), S. 99-114 
    ISSN: 1572-9761
    Keywords: bird distributions ; Monte Carlo ; nearest neighbor ; point patterns ; randomization ; spatial pattern ; spatial statistics ; test of randomness
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract This paper presents a nearest neighbor method for the spatial analysis of data collected from discrete field sampling sites. The method was applied to point counts of birds at permanent survey sites in the Nicolet National Forest of northeastern Wisconsin. The spatial analysis method we developed uses a Monte Carlo randomization approach to test for non-randomness not only of the mean nearest neighbor distance between n points but also the mean second nearest, third nearest,..., to (n−1)th nearest distances to reveal spatial information at multiple scales. Because the bird survey sites are not randomly distributed throughout the forest, the survey sites at which a given species was recorded were compared with random samples drawn from the total survey sites rather than from all possible points within the forest. More refined analyses restricted the randomization by (a) habitat type, in order to separate the effects of non-randomly distributed habitat types on species' distributions; and (b) north-south regions of the forest, in order to account for regional gradients in distribution which were evident for some species. Spatial patterns among the sites at which the birds were detected reveal information about the scale at which the birds are distributed in their environment and provide a more complete picture of multi-scale bird population dynamics.
    Type of Medium: Electronic Resource
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  • 2
  • 3
  • 4
    Publication Date: 2004-07-01
    Print ISSN: 0169-4286
    Electronic ISSN: 1573-5095
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Springer
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  • 5
    Publication Date: 2015-08-19
    Electronic ISSN: 2193-1801
    Topics: Natural Sciences in General
    Published by Springer
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  • 6
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    Unknown
    PANGAEA
    In:  Supplement to: Davis, Ashley N; Davis, Catherine V; Thunell, Robert C; Osborne, Emily B; Black, David E; Benitez-Nelson, Claudia R (2019): Reconstructing 800 Years of Carbonate Ion Concentration in the Cariaco Basin Using the Area Density of Planktonic Foraminifera Shells. Paleoceanography and Paleoclimatology, 34(12), 2129-2140, https://doi.org/10.1029/2019PA003698
    Publication Date: 2023-01-13
    Description: Record of Cariaco Basin near-surface [CO₃²⁻] from 1240-2007 C.E. derived from the area-density (shell weight (μg)/shell area (μm²)) of the planktonic foraminifer Globigerinoides ruber (pink). Area-density is used as a proxy for [CO₃²⁻] following the relationship presented in Marshall et al. (2013), using the two cores PL07-71-BC and CAR25-1
    Keywords: Age; Area in square milimeter; CAR25-1; Carbonate ion; CDRILL; Core drilling; Depth, bottom/max; Depth, top/min; Event label; Globigerinoides ruber pink; Globigerinoides ruber pink, density, standard deviation; Globigerinoides ruber pink, density per area; Globigerinoides ruber pink, weight; PL07-71-BC; Sample ID
    Type: Dataset
    Format: text/tab-separated-values, 721 data points
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  • 7
    Publication Date: 2024-02-01
    Keywords: 04010900; Bio-Optical Platform; BOP; DEPTH, water; Equatorial Pacific; Fluorescence; JGOFS; Joint Global Ocean Flux Study; Number of observations; Radiance, upward at 410 nm; Radiance, upward at 441 nm; Radiance, upward at 488 nm; Radiance, upward at 520 nm; Radiance, upward at 550 nm; Radiance, upward at 633 nm; Radiance, upward at 656 nm; Radiance, upward at 683 nm; Radiation, photosynthetically active; Salinity; Spectral irradiance, downward at 410 nm; Spectral irradiance, downward at 441 nm; Spectral irradiance, downward at 488 nm; Spectral irradiance, downward at 520 nm; Spectral irradiance, downward at 550 nm; Spectral irradiance, downward at 560 nm; Spectral irradiance, downward at 589 nm; Spectral irradiance, downward at 633 nm; Spectral irradiance, downward at 656 nm; Spectral irradiance, downward at 671 nm; Spectral irradiance, downward at 683 nm; Spectral irradiance, downward at 694 nm; Spectral irradiance, downward at 710 nm; Spectral irradiance, incident at 410 nm; Spectral irradiance, incident at 520 nm; Spectral irradiance, upward at 410 nm; Spectral irradiance, upward at 441 nm; Spectral irradiance, upward at 486 nm; Spectral irradiance, upward at 488 nm; Spectral irradiance, upward at 520 nm; Spectral irradiance, upward at 550 nm; Spectral irradiance, upward at 671 nm; Spectral irradiance, upward at 694 nm; Temperature, water; Thomas G. Thompson; TT008; TT008_5-BOP10
    Type: Dataset
    Format: text/tab-separated-values, 4963 data points
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  • 8
    Publication Date: 2024-02-01
    Keywords: 04011600; Bio-Optical Platform; BOP; DEPTH, water; Equatorial Pacific; Fluorescence; JGOFS; Joint Global Ocean Flux Study; Number of observations; Radiance, upward at 410 nm; Radiance, upward at 441 nm; Radiance, upward at 488 nm; Radiance, upward at 520 nm; Radiance, upward at 550 nm; Radiance, upward at 633 nm; Radiance, upward at 656 nm; Radiance, upward at 683 nm; Radiation, photosynthetically active; Salinity; Spectral irradiance, downward at 410 nm; Spectral irradiance, downward at 441 nm; Spectral irradiance, downward at 488 nm; Spectral irradiance, downward at 520 nm; Spectral irradiance, downward at 550 nm; Spectral irradiance, downward at 560 nm; Spectral irradiance, downward at 589 nm; Spectral irradiance, downward at 633 nm; Spectral irradiance, downward at 656 nm; Spectral irradiance, downward at 671 nm; Spectral irradiance, downward at 683 nm; Spectral irradiance, downward at 694 nm; Spectral irradiance, downward at 710 nm; Spectral irradiance, incident at 410 nm; Spectral irradiance, incident at 520 nm; Spectral irradiance, upward at 410 nm; Spectral irradiance, upward at 441 nm; Spectral irradiance, upward at 486 nm; Spectral irradiance, upward at 488 nm; Spectral irradiance, upward at 520 nm; Spectral irradiance, upward at 550 nm; Spectral irradiance, upward at 671 nm; Spectral irradiance, upward at 694 nm; Temperature, water; Thomas G. Thompson; TT008; TT008_5-BOP12
    Type: Dataset
    Format: text/tab-separated-values, 4254 data points
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  • 9
    Publication Date: 2024-02-01
    Keywords: 04021120; Bio-Optical Platform; BOP; DEPTH, water; Equatorial Pacific; Fluorescence; JGOFS; Joint Global Ocean Flux Study; Number of observations; Radiance, upward at 410 nm; Radiance, upward at 441 nm; Radiance, upward at 488 nm; Radiance, upward at 520 nm; Radiance, upward at 550 nm; Radiance, upward at 633 nm; Radiance, upward at 656 nm; Radiance, upward at 683 nm; Radiation, photosynthetically active; Salinity; Spectral irradiance, downward at 410 nm; Spectral irradiance, downward at 441 nm; Spectral irradiance, downward at 488 nm; Spectral irradiance, downward at 520 nm; Spectral irradiance, downward at 550 nm; Spectral irradiance, downward at 560 nm; Spectral irradiance, downward at 589 nm; Spectral irradiance, downward at 633 nm; Spectral irradiance, downward at 656 nm; Spectral irradiance, downward at 671 nm; Spectral irradiance, downward at 683 nm; Spectral irradiance, downward at 694 nm; Spectral irradiance, downward at 710 nm; Spectral irradiance, incident at 410 nm; Spectral irradiance, incident at 520 nm; Spectral irradiance, upward at 410 nm; Spectral irradiance, upward at 441 nm; Spectral irradiance, upward at 486 nm; Spectral irradiance, upward at 488 nm; Spectral irradiance, upward at 520 nm; Spectral irradiance, upward at 550 nm; Spectral irradiance, upward at 671 nm; Spectral irradiance, upward at 694 nm; Temperature, water; Thomas G. Thompson; TT008; TT008_5-BOP13
    Type: Dataset
    Format: text/tab-separated-values, 5362 data points
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  • 10
    Publication Date: 2024-02-01
    Keywords: 04011205; Bio-Optical Platform; BOP; DEPTH, water; Equatorial Pacific; Fluorescence; JGOFS; Joint Global Ocean Flux Study; Number of observations; Radiance, upward at 410 nm; Radiance, upward at 441 nm; Radiance, upward at 488 nm; Radiance, upward at 520 nm; Radiance, upward at 550 nm; Radiance, upward at 633 nm; Radiance, upward at 656 nm; Radiance, upward at 683 nm; Radiation, photosynthetically active; Salinity; Spectral irradiance, downward at 410 nm; Spectral irradiance, downward at 441 nm; Spectral irradiance, downward at 488 nm; Spectral irradiance, downward at 520 nm; Spectral irradiance, downward at 550 nm; Spectral irradiance, downward at 560 nm; Spectral irradiance, downward at 589 nm; Spectral irradiance, downward at 633 nm; Spectral irradiance, downward at 656 nm; Spectral irradiance, downward at 671 nm; Spectral irradiance, downward at 683 nm; Spectral irradiance, downward at 694 nm; Spectral irradiance, downward at 710 nm; Spectral irradiance, incident at 410 nm; Spectral irradiance, incident at 520 nm; Spectral irradiance, upward at 410 nm; Spectral irradiance, upward at 441 nm; Spectral irradiance, upward at 486 nm; Spectral irradiance, upward at 488 nm; Spectral irradiance, upward at 520 nm; Spectral irradiance, upward at 550 nm; Spectral irradiance, upward at 671 nm; Spectral irradiance, upward at 694 nm; Temperature, water; Thomas G. Thompson; TT008; TT008_5-BOP11
    Type: Dataset
    Format: text/tab-separated-values, 5356 data points
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