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Articles 1141 - 1147 of 1147
Full-Text Articles in Life Sciences
A New Forest Floor Corer For Rapid Sampling, Minimal Disturbance And Adequate Precision, Ian A. Nalder, Ross W. Wein
A New Forest Floor Corer For Rapid Sampling, Minimal Disturbance And Adequate Precision, Ian A. Nalder, Ross W. Wein
Aspen Bibliography
We describe an effective and inexpensive device for sampling forest floors. It is based on a rechargeable, battery-powered drill that drives a sharpened steel coring tube. The corer is simple to fabricate, is lightweight (3.5 kg) and can be used easily by one person to obtain intact, natural volume cores of the forest floor. It has been used extensively to obtain samples in 114 boreal forest stands of western Canada. We found that coefficients of variation were typically 30% for forest floor organic matter and bulk density, and tended to be higher in Pinus banksiana stands than in Picea glauca …
Formation Of Lichen Flora On Pioneer Substrates (Erratic Blocks, The Aspen Bark And Straw Thatches), Ludwik Lipnicki
Formation Of Lichen Flora On Pioneer Substrates (Erratic Blocks, The Aspen Bark And Straw Thatches), Ludwik Lipnicki
Aspen Bibliography
The thesis is based on the research results of the lichen flora formation on the substrates: the surface of erratic blocks, aspen barks and straw thatches. Subjection of the species composition to the changes of conditions of the closest environment (mainly the substrate) was analysed. The relationships between the kind of substrate and its permanence, and some features (e.g. morphological features) of pioneering lichens were examined; the intensification of those features and degrees of species pioneering were also distinguished.
Environmental Conditions And Aspen Regeneration Failure, W.R. Jacobi, E.F. Kelly, C.A. Troendle, P.A. Angwin, C.A. Wettstein
Environmental Conditions And Aspen Regeneration Failure, W.R. Jacobi, E.F. Kelly, C.A. Troendle, P.A. Angwin, C.A. Wettstein
Aspen Bibliography
No abstract provided.
The Physical And Hydrological Characteristics Of A South Coast Sandplain Site : East Howick Site Survey, Robert Anthony Sudmeyer
The Physical And Hydrological Characteristics Of A South Coast Sandplain Site : East Howick Site Survey, Robert Anthony Sudmeyer
Resource management technical reports
This Technical Report documents the physical and hydrological characteristics of a farmland site on the Esperance Sandplain. The site was located on 'Belalie Farm East' 110 km east of the town of Esperance in the locality of Howick (AMG 488900, 6277500) The site was typical of the sandplain landsystem which covers 35% (0.72 million ha) of the Esperance Agricultural Region. The farm was cleared over a number of years beginning in the 1970's and an extensive network of windbreaks established.
Results Of Investigations Into The Groundwater Response And Productivity Of High Water Use Agricultural Systems 1990-1997 3 Hunts' Catchment (Frankland), A D. Smith, Richard J. George Dr, P R. Scott, D L. Bennett, R J. Rippon, G J. Orr
Results Of Investigations Into The Groundwater Response And Productivity Of High Water Use Agricultural Systems 1990-1997 3 Hunts' Catchment (Frankland), A D. Smith, Richard J. George Dr, P R. Scott, D L. Bennett, R J. Rippon, G J. Orr
Resource management technical reports
High water use vegetation systems for salinity control were trialed on an 80 ha catchment located 12 km east of Frankland, Western Australia. The catchment receives about 510 mm annual rainfall and 1525 mm annual evaporation. Development of salinity in the catchment is concentrated in the valley floor. Here the groundwater is extremely saline (3000-4000 mS/m) and piezometric levels are between 1 m below and 1 m above the surface.
Supernumerary Teeth In Pleistocene, Recent, And Hybrid Individuals Of The Spermophilus Richardsonii Complex (Sciuridae), H. Thomas Goodwin
Supernumerary Teeth In Pleistocene, Recent, And Hybrid Individuals Of The Spermophilus Richardsonii Complex (Sciuridae), H. Thomas Goodwin
Faculty Publications
A supernumerary distal upper molar, always expressed bilaterally, occurred in Pleistocene (one of 204) and Recent (five of 1,667) specimens of the Spermophilus richardsonii complex. Among Recent specimens with the abnormality, three of four with known provenance came from adjacent colonies with hybrids of S. richardsonii (Richardson's ground squirrel) and S. elegans (Wyoming ground squirrel). Elsewhere, the trait was rare in S. richardsonii (one of 947) and absent in S. elegans (out of 668). Affected individuals exhibited normal P3-M2, but two aberrant teeth distal to M2. Aberrant teeth exhibited a mosaic of features typical of M2, M3, and atypical of …
Characterization And Improvement Of Eos Land Products Using Measurements At Ameriflux Grassland And Wheat Sites In The Arm/Cart Region: Research Annual Performance Report For Period March 1, 1998- January 8, 1999, E. A. Walter-Shea, S. B. Verma
Characterization And Improvement Of Eos Land Products Using Measurements At Ameriflux Grassland And Wheat Sites In The Arm/Cart Region: Research Annual Performance Report For Period March 1, 1998- January 8, 1999, E. A. Walter-Shea, S. B. Verma
School of Natural Resources: Documents and Reviews
No abstract provided.