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  • Articles  (18)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (18)
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  • Articles  (18)
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  • 1
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    Effect of climate on lodgepole pine stem taper in British Columbia, Canada (2012)
    Oxford University Press
    In: Forestry
    Details
    Publication Date: 2012-10-31
    Description: The taper equations used by the Ministry of Forests, Lands and Natural Resource Operations in British Columbia (BC), Canada, date back to the mid-1950s. Very little work has been done on examining the effect of climate on taper, particularly for BC but elsewhere as well. The objective of our research was to determine whether climate has an effect on tree taper for lodgepole pine ( Pinus contorta Dougl. ex Loud.) in BC. The data for this project consisted of multiple diameter inside bark measurements along the stems of 270 trees across eight biogeoclimatic zones. In addition, 20 climate variables for the sample sites were predicted from the ClimateWNA model. Kozak's variable-exponent taper model was refitted with the climate variables in the exponent of the model. The single temperature- and precipitation-related variables that provided the best fit were incorporated into the final taper model. The model was analysed as a mixed-effects model, with spatial correlation and heteroscedastic errors being explicitly modelled. Mean annual precipitation and the Julian date of the first frost after the summer growing period were the best predictors of taper. Further work is required to understand why these variables are important predictors of taper, but a possible linkage is through the tree's crown.
    Print ISSN: 0015-752X
    Electronic ISSN: 1464-3626
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Oxford University Press
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  • 2
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    Sunflecks? (2013)
    Oxford University Press
    Details
    Publication Date: 2013-03-21
    Print ISSN: 0829-318X
    Electronic ISSN: 1758-4469
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Oxford University Press
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  • 3
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    Foliar uptake, carbon fluxes and water status are affected by the timing of daily fog in saplings from a threatened cloud forest (2014)
    Oxford University Press
    Details
    Publication Date: 2014-06-08
    Description: In cloud forests, foliar uptake (FU) of water has been reported for numerous species, possibly acting to relieve daily water and carbon stress. While the prevalence of FU seems common, how daily variation in fog timing may affect this process has not been studied. We examined the quantity of FU, water potentials, gas exchange and abiotic variation at the beginning and end of a 9-day exposure to fog in a glasshouse setting. Saplings of Abies fraseri (Pursh) Poir. and Picea rubens Sarg. were exposed to morning (MF), afternoon (AF) or evening fog (EF) regimes to assess the ability to utilize fog water at different times of day and after sustained exposure to simulated fog. The greatest amount of FU occurred during MF (up to 50%), followed by AF (up to 23%) and then EF, which surprisingly had no FU. There was also a positive relationship between leaf conductance and FU, suggesting a role of stomata in FU. Moreover, MF and AF lead to the greatest improvements in daily water balance and carbon gain, respectively. Foliar uptake was important for improving plant ecophysiology but was influenced by diurnal variation in fog. With climate change scenarios predicting changes to cloud patterns and frequency that will likely alter diurnal patterns, cloud forests that rely on this water subsidy could be affected.
    Print ISSN: 0829-318X
    Electronic ISSN: 1758-4469
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Oxford University Press
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  • 4
    Electronic Resource
    Electronic Resource
    THE EFFECT OF TWO METHODS OF COOKING ON PALATABILITY SCORES, SHEAR FORCE VALUES, AND COLLAGEN CONTENT OF TWO CUTS OF BEEF (1956)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 21 (1956), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1956.tb16926.x
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    EFFECT OF MOIST AND DRY HEAT COOKING ON VITAMIN RETENTION IN MEAT FROM BEEF ANIMALS OF DIFFERENT LEVELS OF FLESHING (1956)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 21 (1956), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1956.tb16912.x
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  • 6
    Electronic Resource
    Electronic Resource
    Net production of herbage from a continuously stocked Lolium perenne-dominated sward in late autumn (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 46 (1991), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Preliminary studies were carried out on the effect of stocking rate during late autumn on a continuously stocked Lolium perenne-dominated sward at an upland site in central Scotland. Measurements were made of L. perenne tiller population density on 29 September and 2 November and of L. perenne net production, mean sward height and total herbage mass in early and late October and early and late November. Stocking rates were 12 ewes per ha during October and 8 and 16 ewes per ha during November. Sward height and herbage mass declined with time and more rapidly at the higher stocking rate. L. perenne growth per tiller and per unit area was influenced by time but not by stocking rate and was closely related to the 5·5°C soil temperature at 10 cm depth. Tiller senescence was greatly reduced at the higher stocking rate and/or the consequentially lower sward height and herbage mass. Tiller net production was therefore sustained at a positive level on the higher stocked sward throughout November while on the lower stocked sward it fell below zero early in November.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1991.tb02404.x
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  • 7
    Electronic Resource
    Electronic Resource
    PRESIDENTIAL ADDRESS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00712.x
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Staphylococcus aureus Identification Characteristics and Enterotoxigenicity (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 51 (1986), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Enterotoxigenicity and conventional tests for identification of Staphylococcus aureus were correlated for strains of staphylococci isolated from foods. These strains were examined for enterotoxin production, colonial morphology on Baird-Parker agar, coagulase activity with rabbit and pig plasma, thermostable nuclease (TNase) production, lysostaphin sensitivity and anaerobic utilization of glucose and mannitol. Enterotoxins A,B,C,D, and E were produced singly or in combination by 100 of the S. aureus strains; 51 strains produced no enterotoxin. False-negative rates in identifying the enterotoxigenic group as typical S. aureus were as follows: 11% for colonial morphology on Baird-Parker agar, 8% for coagulase activity with Difco rabbit plasma, 7% for TNase production, 4% for lysostaphin sensitivity and 2% and 4%, respectively, for the anaerobic utilization of glucose and mannitol. Consequently, none of these tests was reliable for differentiating toxigenic from nontoxigenic S. aureus..
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1986.tb13117.x
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  • 9
    Electronic Resource
    Electronic Resource
    An empirical evaluation of a three-dimensional crown model for predicting volume growth
    Amsterdam : Elsevier
    Forest Ecology and Management 69 (1994), S. 199-209 
    Details
    ISSN: 0378-1127
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0378-1127(94)90229-1
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  • 10
    Electronic Resource
    Electronic Resource
    An evaluation of the saw, dry and rip process to convert red alder into studs (1986)
    Springer
    Wood science and technology 20 (1986), S. 185-200 
    Details
    ISSN: 1432-5225
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The conversion of red alder (Alnus rubra Bong.) into structural lumber using the Saw-Dry-Rip (SDR) process was analyzed by comparing product yield and quality from conventional and SDR conversion processes and from conventional and high temperature drying schedules. A limited economic assessment was also made. It was found that conventionally processed studs had 53% rejects due to warp which was reduced to 6.1% by using the SDR process and high temperature drying. Site had a significant effect on degree of warp. Based on qualities other than warp, 91% of all studs produced met the STUD grade. No difference was found between the strength related properties of high-temperature and conventionally dried material. Excluding material and processing costs, the product value of the SDR processed material was increased 26.6% over conventionally processed material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00351029
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