"The Ecological Consequence of Declining Nitrogen Concentration in Plants Worldwide"
This pursuit will synthesize global measurements of plant nitrogen (N) concentration to produce the first global investigation of spatiotemporal trends. The resulting data base and analysis will be an important future resource for remote sensing and global studies of plant traits. In phase two of the project, we will evaluate the ecological consequences of declining N availability to plants. This will include an investigation of the spatial coherence of trends in leaf N concentration and patterns of global greening from remote sensing. Secondly, because herbivores depend on plant N for protein, individual weight gain, and population maintenance, we would apply models to estimate the impact of declining N concentration on grazing ruminants and insects. Through these activities, we will provide the first ever estimation of the global effects of eCO2 on the dietary quality of plants to herbivores.
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