Index Catalog // ScholarsArchive@OSU

Spatial and temporal variability of carbon dynamics in a tropical forest of Colombia

Creator:: Sierra, Carlos Alberto
Abstract:: Despite the importance of tropical forest ecosystems in the global carbon cycle, there have been few studies of carbon dynamics in this biome. The magnitude of carbon stocks in the tropics and their changes over time are poorly known since ground-based observations are lacking. In this study, total carbon stocks...
Resource Type:: Masters Thesis
Full Text:: biomass. During the field campaign, Carlos A. Sierra participated in the establishment of permanent

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

A conservationist's questions about national forests

Creator:: Brower, David Ross, 1912-2000, United States. Forest Service, and Sierra Club
Abstract:: Gerald W. Williams Collection
Resource Type:: Book
Full Text:: , Sierra Club April 5, 1957 T Sierra Club 1050 Mills Tower San Francisco Today, with a vast store of

Fold growth due to kink-band migration in repeated earthquakes, Sierra de Villicum, San Juan, Argentina

Creator:: Krugh, William C.
Abstract:: Growth strata geometries and deformed geomorphic surfaces reflect the shorttimescale growth of Sierra de Villicum (San Juan Province, Argentina). Accumulated deformation in repeated earthquakes is recorded by the structural geometry of deformed geomorphic surfaces. Through geologic mapping and topographic surveying, six strath terraces were identified on the eastern flank of...
Resource Type:: Masters Thesis
Full Text:: in Repeated Earthquakes, Sierra de Villicum, San Juau, Argentina. by William C. Krugh A THESIS

Decomposition of heterogeneous organic matter and its long-term stabilization in soils

Creator:: Sierra, Carlos A., Harmon, Mark E., and Perakis, Steven S.
Abstract:: Soil organic matter is a complex mixture of material with heterogeneous biological, physical, and chemical properties. Decomposition models represent this heterogeneity either as a set of discrete pools with different residence times or as a continuum of qualities. It is unclear though, whether these two different approaches yield comparable predictions...
Resource Type:: Article
Full Text:: its long-term stabilization in soils CARLOS A. SIERRA,1,2,4 MARK E. HARMON,1 AND STEVEN S. PERAKIS3

Carbon balance on federal forest lands of Western Oregon and Washington: The impact of the Northwest Forest Plan

Creator:: Krankina, Olga N., Harmon, Mark E., Schnekenburger, Frank, and Sierra, Carlos A.
Abstract:: The management of federal forest lands in the Pacific Northwest (PNW) region changed in early 1990s when the Northwest Forest Plan (NWFP) was adopted with the primary goal to protect old-growth forest and associated species. A major decline in timber harvest followed, extending an earlier downward trend. The historic and...
Resource Type:: Article
Full Text:: , Mark E. Harmon a , Frank Schnekenburger a , Carlos A. Sierra ab 6 7 8 9 a Department of

Land Use Impacts on Water Quality in Oak Creek Watershed

Creator:: Johnson, Keira R.
Abstract:: Understanding the relationships between land use, water quality, and groundwater is crucial for ecological, economic, and water management decisions. This study aims to provide a comprehensive analysis of the land use activities and hydrologic processes influencing the water quality of Oak Creek watershed. Objectives of this study were: 1) to...
Resource Type:: Honors College Thesis
Full Text:: by Keira Johnson A THESIS submitted to Oregon State

Can growth strata identify individual paleoearthquakes and characterize fold kinematics? A case study from the La Laja fault system, Sierra de Villicum, Argentina

Creator:: Schultz, Emily S.
Abstract:: A large, damaging earthquake in 1944 on a blind thrust fault caused 60 cm of surface rupture on the subsidiary La Laja fault and additional unmeasured growth of an associated backlimb fold. Both the fold and fault are components of the La Laja Fault System (LLFS) located 25 km northeast...
Resource Type:: Masters Thesis
Full Text:: , Sierra de Villicum, Argentina by Emily S. Schultz A THESIS submitted to Oregon State University

Determining the validity and reliability of the Nicholas Manual Muscle Tester as a measure of isometric strength in women with arthritis

Creator:: Sierra, Nelson
Abstract:: The purpose of this investigation was to determine the validity and reliability of the Nicholas Manual Muscle Tester (NMMT), a portable dynamometer, as a measure of the isometric strength in women with arthritis. Female subjects (N=13; 66 ± 13.89 yrs.) with arthritis were tested for isometric muscle strength on the...
Resource Type:: Masters Thesis
Full Text:: Arthritis by Nelson Sierra A THESIS submitted to Oregon State University in partial

Theoretical perspectives on Latin American indigenous development, with reference to a case study of Cebadas, Ecuador

Creator:: Ocana, Juan Carlos
Abstract:: This thesis presents a discussion of the main materialistic theories proposed to explain the process of development among the indigenous population of Latin America. Four theoretical approaches are presented and discussed. The first one deals with the social group referred to as peasants. The second one explains the process of...
Resource Type:: Masters Thesis
Full Text:: , Ecuador by Juan Carlos Ocaña A THESIS submitted to Oregon State University in partial fulfillment of

ScholarsArchive@OSU

Spatial and temporal variability of carbon dynamics in a tropical forest of Colombia

Environmental variability and system heterogeneity in terrestrial biogeochemical models

A conservationist's questions about national forests

Fold growth due to kink-band migration in repeated earthquakes, Sierra de Villicum, San Juan, Argentina

Decomposition of heterogeneous organic matter and its long-term stabilization in soils

Carbon balance on federal forest lands of Western Oregon and Washington: The impact of the Northwest Forest Plan

Land Use Impacts on Water Quality in Oak Creek Watershed

Can growth strata identify individual paleoearthquakes and characterize fold kinematics? A case study from the La Laja fault system, Sierra de Villicum, Argentina

Determining the validity and reliability of the Nicholas Manual Muscle Tester as a measure of isometric strength in women with arthritis

Theoretical perspectives on Latin American indigenous development, with reference to a case study of Cebadas, Ecuador

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