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An underground index of rangeland degradation: cicadas in arid southern Africa
Oecologia, 1992The prediction that density of long-lived, underground herbivores (Cicadidae) is a function of rangeland condition was examined in arid shrublands in the Karoo, South Africa. It was found that the density of adult cicadas was correlated with cover of deep-rooted, perennial plants.
Suzanne J, Milton, W R J, Dean
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An aridity index defined by precipitation and specific humidity
Journal of Hydrology, 2012Summary The United Nations Environmental Programme (UNEP), defined an aridity index (AI) by the ratio of the annual precipitation and potential evapotranspiration (PET) totals. In this work, specific humidity was used instead of PET and a new aridity index (Iq) has been defined using the ratio of annual precipitation totals and annual mean specific ...
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Near-zero-index materials for photonics
Nature Reviews Materials, 2019Nathaniel Kinsey +2 more
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An Overview of Global Leaf Area Index (LAI): Methods, Products, Validation, and Applications
Reviews of Geophysics, 2019Hongliang Fang +2 more
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