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Whole plant economic spectrum The concept of a single “fast-slow” axis of
plant ecological strategies put forth by Peter Reich that integrates across traits of
leaves, stems, and roots and explains resource use, growth potential, stress, and
pest/pathogen tolerance and competitive advantage of plants in different environments. Using an “economic” framework following the “leaf economic spectrum”
(LES), the concept is based on coordinated function and trade-offs among traits
and is relevant to explaining community assembly and ecosystem function.
Wireless sensor networks (WSN) A group of sensors for monitoring and recording physical or environmental conditions—such as temperature, sound, electromagnetic radiation, pollutants, pressure, humidity, and wind speed. The network
may contain hundreds of thousands of sensor nodes that are spatially dispersed.
The data are collected via wireless communication at a central location that
serves as an interface between users and the network.
Wood density The wood dry mass in a unit volume of wood.
Workflow Sequence of tasks (often substantially automated but not necessarily)
that process input data to a desired output; precise description of data processing
from one analytical step to another in a formal language.
WorldClim variables 19 gridded bioclimatic variables that reflect spatial and
temporal (annual, seasonal) differences in precipitation and temperature in the
WorldClim climatic database, generally intended for species distribution modeling (www.worldclim.org).
Xylem The vascular tissue that transports water and nutrients from the roots to all
parts of the plant. It includes vessels (angiosperms only), tracheids, parenchyma,
and fiber cells.
Z-dimension Typically the third dimension in a three-dimensional space or dataset, such as the vertical element (e.g., elevation above or below sea level), or the
spectral dimension in an image cube.
Glossary
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