Index Catalog // ScholarsArchive@OSU

Seed Cone Anatomy of Cheirolepidiaceae (Coniferales): Reinterpreting Pararaucaria patagonica Wieland

Creator:: Escapa, Ignacio H., Rothwell, Gar W., Stockey, Ruth A., and Cuneo, N. Ruben
Abstract:: Premise of the study: Seed cone morphology and anatomy reflect some of the most important changes in the phylogeny and evolutionary biology of conifers. Reexamination of the enigmatic Jurassic seed cone Pararaucaria patagonica reveals previously unknown systematically informative characters that demonstrate affinities with the Cheirolepidiaceae. This paper documents, for the...
Resource Type:: Article
Full Text:: IGNACIO H. ESCAPA 2,5,6 , GAR W. ROTHWELL 3,4 , RUTH A. STOCKEY 3

Energy Flux and Dissipation in Luzon Strait: Two Tales of Two Ridges

Creator:: Alford, Matthew H., MacKinnon, Jennifer A., Nash, Jonathan D., Simmons, Harper, Pickering, Andy, Klymak, Jody M., Pinkel, Robert, Sun, Oliver, Rainville, Luc, Musgrave, Ruth, Beitzel, Tamara, Fu, Ke-Hsien, and Lu, Chung-Wei
Abstract:: Internal tide generation, propagation, and dissipation are investigated in Luzon Strait, a system of two quasi-parallel ridges situated between Taiwan and the Philippines. Two profiling moorings deployed for about 20 days and a set of nineteen 36-h lowered ADCP–CTD time series stations allowed separate measurement of diurnal and semidiurnal internal...
Resource Type:: Article
Full Text:: ,@ ANDY PICKERING,* JODY M. KLYMAK,& ROBERT PINKEL,1 OLIVER SUN,1 LUC RAINVILLE,* RUTH MUSGRAVE,1 TAMARA

Interpretation of hyperspectral remote-sensing imagery by spectrum matching and look-up tables

Creator:: Mobley, Curtis D., Sundman, Lydia K., Davis, Curtiss O., Bowles, Jeffrey H., Downes, Trijntje Valerie, Leather, Robert A., Montes, Marcos J., Bissett, William Paul, Kohler, David D. R., Reid, Ruth Pamela, Louchard, Eric M., and Gleason, Arthur
Abstract:: A spectrum-matching and look-up-table (LUT) methodology has been developed and evaluated to extract environmental information from remotely sensed hyperspectral imagery. The LUT methodology works as follows. First, a database of remote-sensing reflectance (R[subscript]rs) spectra corresponding to various water depths, bottom reflectance spectra, and water-column inherent optical properties (IOPs) is constructed...
Resource Type:: Article
Full Text:: matching and look-up tables Curtis D. Mobley, Lydia K. Sundman, Curtiss O. Davis, Jeffrey H. Bowles

Evolution and Phylogeny of Gnetophytes: Evidence From the Anatomically Preserved Seed Cone Protoephedrites Eamesii gen. et sp nov. and the Seeds of Several Bennettitalean Species

Creator:: Rothwell, Gar W. and Stockey, Ruth A.
Abstract:: A fossil seed cone with characters that have been hypothesized as transitional to the origin of crown group gnetophytes has been discovered in Lower Cretaceous deposits on Vancouver Island, British Columbia, Canada. This cone, described as Protoephedrites eamesii gen. et sp. nov., provides the first anatomically preserved fossil evidence for...
Resource Type:: Article
Full Text:: Author(s): Gar W. Rothwell and Ruth A. Stockey Source: International Journal of Plant Sciences, Vol. 174

Federal forest-fire policy in the United States

Creator:: Stephens, Scott L. and Ruth, Lawrence W.
Abstract:: Forest-fire policy of U.S. federal agencies has evolved from the use of small patrols in newly created National Parks to diverse policy initiatives and institutional arrangements that affect millions of hectares of forests. Even with large expenditures and substantial infrastructure dedicated to fire suppression, the annual area burned by wildfire...
Resource Type:: Article
Full Text:: ’’ (Pinchot 1907, Pyne 1982, Ruth 2000). Gif- ford Pinchot became the first Chief of the agency that would

A Lower Cretaceous (Valanginian) seed cone provides the earliest fossil record for Picea (Pinaceae)

Creator:: Klymiuk, Ashley A. and Stockey, Ruth A.
Abstract:: Premise of study: Sequence analyses for Pinaceae have suggested that extant genera diverged in the late Mesozoic. While the fossil record indicates that Pinaceae was highly diverse during the Cretaceous, there are few records of living genera. This description of an anatomically preserved seed cone extends the fossil record for...
Resource Type:: Article
Full Text:: RECORD FOR PICEA (PINACEAE) 1 ASHLEY A. KLYMIUK 2,3,5 AND RUTH A

Pararaucaria carrii sp nov., anatomically preserved evidence for the conifer family cheirolepidiaceae in the northern hemisphere

Creator:: Stockey, Ruth A. and Rothwell, Gar W.
Abstract:: A cylindrical permineralized conifer seed cone has been identified from the Officer Member of the Trowbridge Formation, near Izee, in east-central Oregon. The cone is preserved in a Middle Jurassic (Callovian) marine calcium carbonate concretion, associated with araucarian seed cones, conifer twigs and wood, cycad seeds, fern rachides, and lycopodialean...
Resource Type:: Article
Full Text:: Hemisphere Author(s): Ruth A. Stockey and Gar W. Rothwell Source: International Journal of Plant Sciences

Bringing an ecological view of change to Landsat-based remote sensing

Creator:: Kennedy, Robert E., Andréfouët, Serge, Cohen, Warren B., Gómez, Cristina, Griffiths, Patrick, Hais, Martin, Healey, Sean P., Helmer, Eileen H., Hostert, Patrick, Lyons, Mitchell B., Meigs, Garrett W., Pflugmacher, Dirk, Phinn, Stuart R., Powell, Scott L., Scarth, Peter, Sen, Susmita, Schroeder, Todd A., Schneider, Annemarie, Sonnenschein, Ruth, Vogelmann, James E., Wulder, Michael A., and Zhu, Zhe
Abstract:: When characterizing the processes that shape ecosystems, ecologists increasingly use the unique perspective offered by repeat observations of remotely sensed imagery. However, the concept of change embodied in much of the traditional remote-sensing literature was primarily limited to capturing large or extreme changes occurring in natural systems, omitting many more...
Resource Type:: Article

Mesozoic Diversity of Osmundaceae: Osmundacaulis whittlesii sp. nov. in the Early Cretaceous of Western Canada

Creator:: Smith, MacKenzie A., Rothwell, Gar W., and Stockey, Ruth A.
Abstract:: Premise of research: A distinctive new species of osmundaceous fern, based on a permineralized trunk from Lower Cretaceous deposits of Haida Gwaii (formerly the Queen Charlotte Islands) off the west coast of mainland Canada, provides additional data for addressing the Mesozoic diversity and the overall pattern of phylogeny for osmundaceous...
Resource Type:: Article
Full Text:: ,1,†,‡ and Ruth A. Stockey† *Department of Integrative Biology, 3029 Cordley Hall, Oregon State

Hubbardiastrobus cunninghamioides gen. et sp. nov., Evidence for a Lower Cretaceous Diversification of Cunninghamioid Cupressaceae

Creator:: Atkinson, Brian A., Rothwell, Gar W., and Stockey, Ruth A.
Abstract:: PREMISE OF RESEARCH. The occurrence of six ovulate cones and six leafy branching systems, two of which show attachment of the ovulate cone, reveals a new cunninghamioid fossil conifer from the Cretaceous Apple Bay locality of Vancouver Island, Canada. This anatomically preserved plant expands our understanding of basal Cupressaceae in...
Resource Type:: Article
Full Text:: Brian A. Atkinson,* Gar W. Rothwell,1,*,† and Ruth A. Stockey*,‡ *Department of Environmental and Plant

ScholarsArchive@OSU

Seed Cone Anatomy of Cheirolepidiaceae (Coniferales): Reinterpreting Pararaucaria patagonica Wieland

Energy Flux and Dissipation in Luzon Strait: Two Tales of Two Ridges

Interpretation of hyperspectral remote-sensing imagery by spectrum matching and look-up tables

Evolution and Phylogeny of Gnetophytes: Evidence From the Anatomically Preserved Seed Cone Protoephedrites Eamesii gen. et sp nov. and the Seeds of Several Bennettitalean Species

Federal forest-fire policy in the United States

A Lower Cretaceous (Valanginian) seed cone provides the earliest fossil record for Picea (Pinaceae)

Pararaucaria carrii sp nov., anatomically preserved evidence for the conifer family cheirolepidiaceae in the northern hemisphere

Bringing an ecological view of change to Landsat-based remote sensing

Mesozoic Diversity of Osmundaceae: Osmundacaulis whittlesii sp. nov. in the Early Cretaceous of Western Canada

Hubbardiastrobus cunninghamioides gen. et sp. nov., Evidence for a Lower Cretaceous Diversification of Cunninghamioid Cupressaceae

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