3 Works

Data from: The geography of spatial synchrony

Jonathan A. Walter, Lawrence W. Sheppard, Thomas L. Anderson, Jude H. Kastens, Ottar N. Bjornstad, Andrew M. Liebhold & Daniel C. Reuman
Spatial synchrony, defined as correlated temporal fluctuations among populations, is a fundamental feature of population dynamics, but many aspects of synchrony remain poorly understood. Few studies have examined detailed geographical patterns of synchrony; instead most focus on how synchrony declines with increasing linear distance between locations, making the simplifying assumption that distance decay is isotropic. By synthesising and extending prior work, we show how geography of synchrony, a term which we use to refer to...

Data from: Depletion of heterogeneous source species pools predicts future invasion rates

Andrew M. Liebhold, Eckehard G. Brockerhoff & Mark Kimberley
Predicting how increasing rates of global trade will result in new establishments of potentially damaging invasive species is a question of critical importance to the development of national and international policies aimed at minimizing future invasions. Centuries of historical movement and establishment of invading species may have depleted the supply of species available for future invasions, and it has been suggested that the problem of invasions will diminish as a result of this. However, the...

Data from: Rapid assessment of forest canopy and light regime using smartphone hemispherical photography

Simone Bianchi, Christine Cahalan, Sophie Hale & James Michael Gibbons
Hemispherical photography (HP), implemented with cameras equipped with “fisheye” lenses, is a widely used method for describing forest canopies and light regimes. A promising technological advance is the availability of low-cost fisheye lenses for smartphone cameras. However, smartphone camera sensors cannot record a full hemisphere. We investigate whether smartphone HP is a cheaper and faster but still adequate operational alternative to traditional cameras for describing forest canopies and light regimes. We collected hemispherical pictures with...

Registration Year

  • 2017
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Resource Types

  • Dataset
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Affiliations

  • Northern Research Station
    3
  • University of Kansas
    1
  • Bangor University
    1
  • Virginia Commonwealth University
    1
  • US Forest Service
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  • Rockefeller University
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  • Scion
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  • Pennsylvania State University
    1