Journal
BIOSCIENCE
Volume 59, Issue 2, Pages 127-139Publisher
OXFORD UNIV PRESS
DOI: 10.1525/bio.2009.59.2.6
Keywords
adaptation; global change; modeling; optimization; resource availability
Categories
Funding
- TERACC [0090238]
- Academy of Finland [206307]
- Australian Research Council
- Australian Department of Climate Change
- US Department of Energy's Office of Science, Biological and Environmental Research Program [DE-FG02-96ER62291]
- Academy of Finland (AKA) [206307, 206307] Funding Source: Academy of Finland (AKA)
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Plant responses to global changes in carbon dioxide (CO2), nitrogen, and water availability are critical to future atmospheric CO2 concentrations, hydrology; and hence climate. Our understanding of those responses is incomplete, however. Multiple-resource manipulation experiments and empirical observations have revealed a diversity of responses, as well as some consistent patterns. But vegetation models-currently dominated by complex numerical simulation models-have yet to achieve a consensus among their predicted responses, let alone offer a coherent explanation of the observed ones. Here the propose an alternative approach based on relatively simple optimization models (OMs). We highlight the results of three recent forest OMs, which together explain a remarkable range of observed forest responses to altered resource availability. We conclude that OMs now offer a simple yet powerful approach to predicting the responses of forests-and, potentially; other plant types-to global change. We recommend ways in which OMs could be developed further in this direction.
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