Index Catalog // ScholarsArchive@OSU

Establishment and dynamics of methane-oxidizing microbial communities in marine sediments

Creator:: Klasek, Scott A.
Abstract:: Marine sediments are vast sources and reservoirs of methane, a potent greenhouse gas. Most of this methane is anaerobically oxidized by archaea before it can reach the overlying ocean, though the efficiency of this process often depends on methane fluxes and mechanisms of fluid transport. Anaerobic methanotrophic archaea, or ANME,...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Scott A

Estimation of surface canopy water in Pacific Northwest forests by fusing radar, lidar, and climatic data

Creator:: Heffernan, Scott A.
Abstract:: Surface Canopy Water (SCW) is the intercepted rain water that resides within the tree canopy and plays a significant role in the hydrological cycle. Challenges arise in measuring SCW in remote areas using traditional ground based techniques. Remote sensing in the radio spectrum has the potential to overcome the challenges...
Resource Type:: Masters Thesis
Full Text:: THESIS OF Scott Heffernan for the degree of Master of Science in Sustainable Forest Management

Exploring the foundations of science interest development in early childhood

Creator:: Pattison, Scott A.
Abstract:: There is growing evidence that children develop science-related interests in early childhood, before they enter school, and that these interests may have long-term implications for science participation and achievement. Although researchers have made headway in describing interest development in the preschool years, little is currently known about the proximal processes...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Scott A. Pattison for the degree of Doctor of Philosophy in Science Education presented

The effects of semi-chronic thermal stress on physiological indicators in steelhead Oncorhynchus mykiss

Creator:: Kammerer, Brittany D. and Heppell, Scott A.
Abstract:: The physiological response of juvenile steelhead (Oncorhynchus mykiss) to prolonged heat stress was examined by exposing replicated groups of fish to 25 consecutive days at 15°C, 23°C, and 25°C followed by a 55 day recovery period at 15°C. We found that at temperatures ≥25°C, steelhead consumed significantly less food per...
Resource Type:: Article
Full Text:: 16 Brittany D. Kammerer 1 * and Scott A. Heppell1 1 17 1 Department of Fisheries and Wildlife

Nested scales of spatial heterogeneity in juvenile walleye pollock Theragra chalcogramma in the southeastern Bering Sea

Creator:: Benoit-Bird, Kelly J., McIntosh, Neal E., and Heppell, Scott A.
Abstract:: We sought to characterize the distribution of juvenile walleye pollock Theragra chalcogramma in an area of intense predator-prey interactions and to describe habitat features that lead to their observed distributions. The distribution of juvenile walleye pollock around the Pribilof Islands in the southeastern Bering Sea in 2008 and 2009 was...
Resource Type:: Article
Full Text:: . McIntosh1, Scott A. Heppell2 1College of Earth, Ocean, and Atmospheric Sciences, and 2Department of

TopCAT – Topographical Compartment Analysis Tool to analyze seacliff and beach change in GIS

Creator:: Olsen, Michael J., Young, Adam P., and Ashford, Scott A.
Abstract:: This paper discusses the development of a new GIS extension named the Topographic Compartment Analysis Tool (TopCAT), which compares sequential digital elevation models (DEMs) and provides a quantitative and statistical analysis of the alongshore topographical change. TopCAT was specifically designed for the morphological analysis of seacliffs and beaches but may...
Resource Type:: Article
Full Text:: analyze 1 seacliff and beach change in GIS 2 3 Michael J. Olsen 1* , Adam P. Young 2 , and Scott

Settlement patterns of young-of-the-year rockfish among six Oregon estuaries experiencing different levels of human development

Creator:: Dauble, Alison D., Heppell, Scott A., and Johansson, Mattias L.
Abstract:: In the US Pacific Northwest, rockfishes Sebastes spp. have recently become a focus for increased management efforts; several species are currently managed under extreme conservation measures due to low population levels and intense fishing pressure. Rockfish recruitment is extremely variable, and a better understanding of the factors influencing recruitment and...
Resource Type:: Article
Full Text:: development Alison D. Dauble1,3,*, Scott A. Heppell1, Mattias L. Johansson2,4 1Oregon State University

Understanding names of Oregon trees

Creator:: Leavengood, Scott A. and Oregon State University. Extension Service
Abstract:: Answers questions caused by the confusing names of Oregon's tree species, such as "Is incense-cedar really a cedar?" and "Is Douglas-fir a true fir?" Discusses scientific, common, and industry names for Oregon species. Covers true firs, Hem-fir, Douglas-fir, cedar, western juniper, pine, western larch, mountain-mahogany, tanoak, poisonoak, poplar, and myrtlewood.
Resource Type:: Technical Report
Full Text:: Names of Oregon Trees 1 Why do we call white fir a true fir? Is Douglas-fir a true fir? Is bull pine

Body size affects individual winter foraging strategies of thick-billed murres in the Bering Sea

Creator:: Orben, Rachael A., Paredes, Rosana, Roby, Daniel D., Irons, David B., and Shaffer, Scott A.
Abstract:: 1. Foraging and migration often require different energetic and movement strategies. Though not readily apparent, constraints during one phase might influence the foraging strategies observed in another. For marine birds that fly and dive, body size constraints likely present a trade-off between foraging ability and migration as smaller bodies reduce...
Resource Type:: Article

A cross-shelf gradient in δ¹⁵N stable isotope values of krill and pollock indicates seabird foraging patterns in the Bering Sea

Creator:: Jones, Nathan M., Hoover, Brian A., Heppell, Scott A., and Kuletz, Kathy J.
Abstract:: Concurrent measurements of predator and prey δ¹⁵N isotope values demonstrated that a cross-shelf isotopic gradient can propagate through a marine food web from forage species to top-tier predators and indicate foraging areas at a scale of tens of kilometers. We measured δ¹³C and δ¹⁵N in muscle tissues of thick-billed murres...
Resource Type:: Article
Full Text:: foraging patterns in the Bering Sea Nathan M. Jones a,n, Brian A. Hoover a, Scott A. Heppell b, Kathy J

ScholarsArchive@OSU

Establishment and dynamics of methane-oxidizing microbial communities in marine sediments

Estimation of surface canopy water in Pacific Northwest forests by fusing radar, lidar, and climatic data

Exploring the foundations of science interest development in early childhood

The effects of semi-chronic thermal stress on physiological indicators in steelhead Oncorhynchus mykiss

Nested scales of spatial heterogeneity in juvenile walleye pollock Theragra chalcogramma in the southeastern Bering Sea

TopCAT – Topographical Compartment Analysis Tool to analyze seacliff and beach change in GIS

Settlement patterns of young-of-the-year rockfish among six Oregon estuaries experiencing different levels of human development

Understanding names of Oregon trees

Body size affects individual winter foraging strategies of thick-billed murres in the Bering Sea

A cross-shelf gradient in δ¹⁵N stable isotope values of krill and pollock indicates seabird foraging patterns in the Bering Sea

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