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Filtering by: Creator Davidson, Carlos Advisor Harmon, Mark E.

Environmental variability and system heterogeneity in terrestrial biogeochemical models

Creator:

Sierra, Carlos Alberto

Abstract:

Ecosystems are highly heterogeneous systems subjected to important levels of environmental variability; however, it is common in terrestrial biogeochemical models to assume homogeneous properties of the elements of the system or constant environmental conditions. For some processes, heterogeneity in these models is treated very simplistically, but there is not much...

Resource Type:

Dissertation

Full Text:

AN ABSTRACT OF THE DISSERTATION OF Carlos A. Sierra for the
Nitrogen and phosphorus dynamics during decomposition of multiple litter types in temperate coniferous forests

Creator:

van Huysen, Tiffany L.

Abstract:

Litter nutrient dynamics contribute significantly to biogeochemical cycling in forest ecosystems. These dynamics may be influenced by site attributes, litter nutrient concentrations, and soil nutrient availability either independently or synergistically. Litter nutrient dynamics were examined in two decomposition studies in temperate coniferous forests of Oregon. I used ¹⁵N-labelled litter of...

Resource Type:

Dissertation

Full Text:

, Carlos Sierra, Em Sinkhorn, Aaron Thiel, and Jeannette Tuitele-Lewis. I would like to thank Jake
The Impact of Disturbance on Carbon Stores and Dynamics in Forests of Coastal Alaska

Creator:

Yatskov, Mikhail A.

Abstract:

Changes in climate caused by increased concentrations of carbon dioxide (CO₂) in the Earth’s atmosphere have led land and ocean surface temperatures to increase by 0.85°C and sea level to increase by 19 cm relative to preindustrial times. Global climate change will lead to further alterations in mean temperature and...

Resource Type:

Dissertation

Full Text:

companion and a partner in conversations. My thanks also go to Drs. Doug Maguire, Carlos Sierra, Alan