Direct seeding of oak in Missouri

Cover title

Control of woody vegetation : a report on tests using 2,4,5-T, ammate, sodium arsenite and CMU on nine common Missouri tree species

Division of Forestry, Missouri Conservation Commission cooperating.Includes bibliographical references (page 25)

Oak pruning in the Missouri Ozarks

Cover title.Includes bibliographical references

Body Weights of Ohio Ruffed Grouse (Bonasa umbellus)

Author Institution: Ohio Department of Natural Resources, Division of WildlifeAverage annual winter (December-February) body weights of Ohio ruffed grouse (Bonasa umbellus) from both the glaciated northeast and the more southern unglaciated hill country ranges showed only small deviations from the 4-year (1974-1977) mean. Hill country grouse were heavier (P < 0.05) than northeastern birds in winter, but not in fall (October-November). Year-around (1969-1982) body weights were obtained only for hill country grouse. Both sexes showed rapid weight gains in the fall; juveniles (4.5-12 months of age) appeared to gain weight faster than adults. Peak weights were achieved in November and held through winter. With the onset of breeding in March, males lost weight rapidly. Lowest weights for males and probably females occurred in late spring and summer and were about 100 g (14 and 17%, respectively) below winter weights. Male grouse were consistently heavier than females; adults were usually heavier than juveniles of the same sex. Wild-trapped grouse chicks showed steady weight gains averaging about 30 g per week from hatching through 16 weeks of age. Male chicks generally averaged 6-14% heavier than female chicks after 10-17 weeks of age. Comparisons among different areas suggested that ruffed grouse from the more southerly latitudes were heavier in winter and spring, but that summer and perhaps fall weights were similar. The results suggest that body weight is not a good index of condition and reproductive success in ruffed grouse

Distribution and Relative Abundance of Ruffed Grouse in Ohio

Author Institution: Ohio Department of Natural Resources, Division of WildlifeThis survey updates the distribution and relative abundance of ruffed grouse (Bonasa umbellus) in Ohio. In 1982, ruffed grouse were reported in 44 counties covering approximately 41,400 km2 in glaciated northeastern and unglaciated eastern and southeastern Ohio. About 74% of the occupied range was rated best-good and 26% fair-marginal. Drumming male densities ranging from 0.7 to 3.7 per 40 ha were recorded on three best-good rated study areas in southeastern Ohio. From 1972 through 1983, grouse populations demonstrated dramatic low to high year changes of 75% for the range wide grouse hunter survey and 150% for drumming male censuses in southeastern range

Assessing Physical Activity During a High Altitude Trek in Peru

Please view abstract in the attached PDF file

Forecasting the air pollution episode potential in the Canary Islands

International audienceIn the frame of the WMO Global Atmosphere Watch Urban Research Meteorology and Environment programme (GURME), a system for forecasting air pollution episode potential in the Canary Islands has been developed. Meteorological parameters relevant to air quality (synoptic wind speed, wind direction, boundary layer height and temperature at 91 vertical levels) are obtained from the European Centre for Medium range Weather Forecasting (ECMWF) once a day for up to four days ahead. In addition, a model based on the analogue method utilising six years of historical meteorological and air quality data predicts the probability of SO2 concentration exceeding certain thresholds for a measurement station located in Santa Cruz de Tenerife. Meteorological forecasts are also provided from a high resolution (2 km) local area model (MM5) implemented for the Canary Islands domain. This simple system is able to forecast meteorological conditions which are favourable to the occurrence of pollution episodes for the forthcoming days

Acorn production in the Missouri Ozarks

Cover title.Includes bibliographical references