Filters: Tags: Kluwer Academic Publishers (X)
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We investigated the relationship between plant nitrogen limitation and water availability in dryland ecosystems. We tested the hypothesis that at lower levels of annual precipitation, aboveground net primary productivity (ANPP) is limited primarily by water whereas at higher levels of precipitation, it is limited primarily by nitrogen. Using a literature survey of fertilization experiments in arid, semi-arid, and subhumid ecosystems, we investigated the response of ANPP to nitrogen addition as a function of variation in precipitation across geographic gradients, as well as across year-to-year variation in precipitation within sites. We used four different indices to assess the degree of N limitation: (1) Absolute...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Arid,
Biogeochemistry,
Fertilization,
Kluwer Academic Publishers,
Net primary productivity,
Two trends in the Gunnison Basin of western Colorado are increasing the sensitivity of reservoir systems to climate variability. These trends are increasing water utilization within the basin, especially for environmental purposes, and the increasing importance of functional linkages of the basin's water to other places in the U.S. West. There is a potential for seasonal climate forecasts to provide advance guidance of wet or dry years, which could allow managers to better plan for dry conditions, or to take advantage of wet conditions. Trends in this basin mirror similar trends across the interior West, and thus it is valuable to examine the Gunnison Basin to understand how climate variability interacts with critical...
Categories: Publication;
Types: Book Citation,
Citation;
Tags: Climate and Water: Transboundary Challenges in the Americas,
Kluwer Academic Publishers
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