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Seed-coat anatomy and proanthocyanidins contribute to the dormancy of Rubus seed

Creator:: Wada, Sugae, Kennedy, James A., and Reed, Barbara M.
Abstract:: Rubus seed has a deep double dormancy that restricts germination due to seed coat structure and chemical composition. Improved germination of diverse Rubus species required for breeding improved blackberry and raspberry cultivars is partly dependent on the seed coat structure. This study evaluated the seed coat structure of three species...
Resource Type:: Article
Full Text:: contribute to the dormancy of Rubus seed S s S a b c a A R R A K G P R S S T 1 v s I d s c m C c d

Diurnal Temperature Range Compression Hastens Berry Development and Modifies Flavonoid Partitioning in Grapes

Creator:: Cohen, Seth D., Tarara, Julie M., and Kennedy, James A.
Abstract:: Temperatures during the day and night are known to influence grape berry metabolism and resulting composition. In this study, the flavonoid composition of field-grown Vitis vinifera L. cv. Merlot berries was investigated as a function of diurnal temperature range (DTR). The DTR was compressed by cooling berries during the day...
Resource Type:: Article
Full Text:: . 45:1-5. Lee, J.M., J.A. Kennedy, C. Devlin, M. Redhead, and C. Rennaker. 2008. Effect of early seed

Stable occupancy by breeding hawks (Buteo spp.) over 25 years on a privately managed bunchgrass prairie in northeastern Oregon, USA

Creator:: Kennedy, Patricia L., Bartuszevige, Anne M., Houle, Marcy, Humphrey, Ann B., Dugger, Katie M., and Williams, John
Abstract:: Potential for large prairie remnants to provide habitat for grassland-obligate wildlife may be compromised by nonsustainable range-management practices. In 1979–1980, high nesting densities of 3 species of hawks in the genus Buteo—Ferruginous Hawk (Buteo regalis), Red-tailed Hawk (B. jamaicensis), and Swainson’s Hawk (B. swainsoni)—were documented on the Zumwalt Prairie and...
Resource Type:: Article
Full Text:: , USA Kennedy, P. L., Bartuszevige, A. M., Houle, M., Humphrey, A. B., Dugger, K. M., & Williams, J

Impact of diurnal temperature variation on grape berry development, proanthocyanidin accumulation, and the expression of flavonoid pathway genes

Creator:: Cohen, Seth D., Tarara, Julie M., Gambetta, Greg A., Matthews, Mark A., and Kennedy, James A.
Abstract:: Little is known about the impact of temperature on proanthocyanidin (PA) accumulation in grape skins, despite its significance in berry composition and wine quality. Field-grown grapes (cv. Merlot) were cooled during the day or heated at night by +/–8 C, from fruit set to veraison in three seasons, to determine...
Resource Type:: Article
Full Text:: and Food Chemistry 55, 6575–6584. Cortell JM, Halbleib M, Gallagher AV, Righetti TL, Kennedy JA

Re-Occupancy of Breeding Territories by Ferruginous Hawks in Wyoming: Relationships to Environmental and Anthropogenic Factors

Creator:: Wallace, Zachary P., Kennedy, Patricia L., Squires, John R., Oakleaf, Robert J., Olson, Lucretia E., and Dugger, Katie M.
Abstract:: Grassland and shrubland birds are declining globally due in part to anthropogenic habitat modification. Because population performance of these species is also influenced by non-anthropogenic factors, it is important to incorporate all relevant ecological drivers into demographic models. We used design-based sampling and occupancy models to test relationships of environmental...
Resource Type:: Article

Mapping change of older forest with nearest-neighbor imputation and Landsat time-series

Creator:: Ohmann, Janet L., Gregory, Matthew J., Roberts, Heather M., Cohen, Warren B., Kennedy, Robert E., and Yang, Zhiqiang
Abstract:: The Northwest Forest Plan (NWFP), which aims to conserve late-successional and old-growth forests (older forests) and associated species, established new policies on federal lands in the Pacific Northwest USA. As part of monitoring for the NWFP, we tested nearest-neighbor imputation for mapping change in older forest, defined by threshold values...
Resource Type:: Article
Full Text:: and Landsat time-series Janet L. Ohmann a,⇑, Matthew J. Gregory b, Heather M. Roberts b, Warren B

Shade estimation over streams using distributed temperature sensing

Creator:: Petrides, A. C., Huff, J., Arik, A., van de Giesen, N., Kennedy, A. M., Thomas, C. K., and Selker, J. S.
Abstract:: The characterization of temporal and spatial distribution of sunlight is essential for understanding energy transport in natural ecosystems. Fiber-optic distributed temperature sensing (DTS) allows meter resolution measurements of temperature at subminute resolution. The difference in temperature due to absorption and reflection of a pair of helically twisted black and white...
Resource Type:: Article
Full Text:: . Huff,1 A. Arik,1 N. van de Giesen,2 A. M. Kennedy,3 C. K. Thomas,3 and J. S. Selker1 Received 26

Can carbon isotopes be used to predict watershed-scale transpiration?

Creator:: Pypker, T. G., Barnard, H. R., Hauck, M., Sulzman, E. W., Unsworth, Michael H., Mix, Alan C., Kennedy, A. M., and Bond, B. J.
Abstract:: The Penman‐Monteith equation is often used to estimate transpiration, but an important limitation to this approach, especially for mountainous forested sites, is an accurate estimate of canopy conductance averaged over the area of interest (Gs). We propose a method for estimating watershed‐scale transpiration using estimates of Gs derived from measurements...
Resource Type:: Article
Full Text:: . Mix,4 A. M. Kennedy,2 and B. J. Bond2 Received 31 March 2008; revised 27 January 2009; accepted 11

Biogenic matter diagenesis on the sea floor: A comparison between two continental margin transects

Creator:: Berelson, William M., McManus, James, Coale, Kenneth H., Johnson, Kenneth S., Kilgore, Tammy, Burdige, David, and Pilskaln, Cynthia
Abstract:: Benthic chamber measurements of the reactants and products involved with biogenic matter diagenesis (oxygen, ammonium, nitrate, silicate, phosphate, TCO₂, alkalinity) were used to define fluxes of these solutes into and out of the sediments off southern and central California. Onshore to offshore transects indicate many similarities in benthic fluxes between...
Resource Type:: Article
Full Text:: diagenesis on the sea floor: A comparison between two continental margin transects by William M. Berelsonl

Biomass production from the US forest and agriculture sectors in support of a renewable electricity standard

Creator:: White, Eric M., Latta, Greg, Alig, Ralph J., Skog, Kenneth E., and Adams, Darius M.
Abstract:: Production of renewable energy from biomass has been promoted as means to improve greenhouse gas balance in energy production, improve energy security, and provide jobs and income. However, uncertainties remain as to how the agriculture and forest sectors might jointly respond to increased demand for bioelectricity feedstocks and the potential...
Resource Type:: Article
Full Text:: , Kenneth E. Skog c, Darius M. Adams a a Department of Forest Engineering, Resources and Management, 280

ScholarsArchive@OSU

Seed-coat anatomy and proanthocyanidins contribute to the dormancy of Rubus seed

Diurnal Temperature Range Compression Hastens Berry Development and Modifies Flavonoid Partitioning in Grapes

Stable occupancy by breeding hawks (Buteo spp.) over 25 years on a privately managed bunchgrass prairie in northeastern Oregon, USA

Impact of diurnal temperature variation on grape berry development, proanthocyanidin accumulation, and the expression of flavonoid pathway genes

Re-Occupancy of Breeding Territories by Ferruginous Hawks in Wyoming: Relationships to Environmental and Anthropogenic Factors

Mapping change of older forest with nearest-neighbor imputation and Landsat time-series

Shade estimation over streams using distributed temperature sensing

Can carbon isotopes be used to predict watershed-scale transpiration?

Biogenic matter diagenesis on the sea floor: A comparison between two continental margin transects

Biomass production from the US forest and agriculture sectors in support of a renewable electricity standard

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