Moths of the Douglas Lake Region (Emmet and Cheboygan Counties), Michigan: II. Noctuidae (Lepidoptera)

(excerpt) The two counties which share the northern tip of the Lower Peninsula of Michigan, Emmet on the west and Cheboygan on the east, have long been taken to define the principal region under study by the University of Michigan Biological Station, situated since 1909 on Douglas Lake in Cheboygan County near the Emmet County line

Moths of the Douglas Lake Region (Emmet and Cheboygan Counties), Michigan: VI. Miscellaneous Small Families (Lepidoptera)

Forty-seven species in nine families of Lepidoptera (Hepialidae, Psychidae, Alucitidae, Sesiidae, Cossidae, Limacodidae, Thyrididae, Pterophoridae, Epiplemi- dae) are listed with earliest and latest recorded flight dates in Emmet and Cheboygan counties, which share the northern tip of the Lower Peninsula of Michigan. The records are from the principal institutional and private collections of Michigan moths and continue the documented listing of Lepidoptera in the region

Moths of the Douglas Lake Region (Emmet and Cheboygan Counties), MIchigan: I. Sphingidae - Ctenuchidae (Lepidoptera)

Excerpt: For more than 60 years, workers at the University of Michigan Biological Station have been concerned with the flora and fauna of the Douglas Lake Region - now generally defined, for ease of boundaries. as Emmet and Cheboygan counties, which share the northern tip of the Lower Peninsula of Michigan. In 1915, Paul S. Welch published a list of Lepidoptera taken in the immediate vicinity of Douglas Lake, based on collections made from 19 1 1 to 19 13. The list includes 16 species in the families here considered (those before the Noctuidae in most checklists). A somewhat larger number of species, 55, were attributed to one (usually Cheboygan) or both of these counties in Moore\u27s list of the moths of Michigan (1955) -- a few of them credited solely on the basis of Welch\u27s list. 1 am now able to list 73 species in these families, all represented by extant specimens, and it seems well to assemble the information into compact form, as has been done for the butterflies (Voss. 1954, supplemented by Voss & Wagner, 1956). Additional species will certainly turn up in future years, in the field or in unexamined collections

Moths of the Douglas Lake Region (Emmet and Cheboygan Counties), Michigan: IV. Geometridae (Lepidoptera)

An account, with known flight periods indicated, of 165 species of Geometridae concludes listing of the macrolepidoptera from the northern tip of the Lower Peninsula of Michigan. About 44OJo of these are previously unreported for the region, and 12 species are previously unreported for Michigan in earlier lists for the state

Moths of the Douglas Lake Region (Emmet and Cheboygan Counties), Michigan: III. Thyatiridae, Drepanidae, Lasiocampidae, Notodontidae, Lymantriidae (Lepidoptera)

(excerpt) The first list of Lepidoptera for the Douglas Lake region (Welch 1915) included 12 species in the group of five families for which 55 species are now reported. This 358% increase ronly in part the result of enlarging the\u27 \u27region to include all of the two counties which share the northern tip of the Lower Peninsula of Michigan) compares with an increase of 356\u274:- in the families Sphingidae-Ctenuchidae (Voss 1970) and 623% in the Noctuidae (Voss 1981). Only the Geometridae remain to complete recording the consider- able expansion of our knowledge of the local macro1epidopteran fauna over the past 70 years

Benchmarking best manufacturing practices: a study into four sectors of Turkish industry

Reports on a benchmarking study conducted to quantify how well companies operating in various sectors of Turkish industry match up to best practice, both in the practices they adopt and in the operational outcomes that result, and to test the hypothesis that the closer a company is to best practice, the more likely it is for that company to achieve higher business performance. The survey conducted in 1997 and 1998 included 82 companies from the Turkish electronics, cement, automotive sectors and part and component suppliers to the appliance industry. For data gathering. employs the Competitive Strategies and Best Practices Benchmarking Questionnaire, supported ly, some follow-up interviews and one-day site visits. Classifies two small groups of companies as leaders and laggers, depending on how close they were to best practice. Shows that the leaders have performed better than the laggers in adopting best manufacturing practices and in the achievement of high performance La,els. The leaders also have achieved substantially higher business performance than the laggers. Furthermore, observes that large-sized companies outperform the rest both in terms of their success in implementing best manufacturing practices and in achieving high operational outcomes and that there is no appreciable difference between industrial sectors in implementing best manufacturing practices and in achieving high operational outcomes

A Pyralid Moth (Lepidoptera) as Pollinator of Blunt-Leaf Orchid

(excerpt) As early as 1912, mosquitoes were observed bearing the pollen masses (pollinia) of the blunt-leaf orchid, Habenaria obtusata (Pursh) Richardson, in Reese\u27s Bog, a cedar swamp at the north end of Burt Lake, Cheboygan County, Michigan, near the campus of the University of Michigan Biological Station (Dexter 1913)

Design and calibration of a rocket-borne electron spectrometer for investigation of particle ionization in the nighttime midlatitude E region

An explanation was developed for the formation, near midnight at midlatitudes, of a broad electron density layer extending approximately from 120 to 180 km and usually referred to as the intermediate E layer. The responsible mechanism is believed to be the converging vertical ion drifts resulting from winds of the solar semidiurnal tide. Numerical solutions of the continuity equation appropriate to the intermediate layer is described for particular models of ion drift, diffusion coefficents, and ionization production. Analysis of rocket observations of the layer show that the ionization rate is highly correlated with the planetary geomagnetic index, K sub p. Particle flux measurements support the idea that energetic electrons are the principal source of this ionization. A semiconductor spectrometer experiment for investigation of the particle flux, spectrum, and angular properties was designed and successfully flown on a Nike Apache rocket. A detailed description of the theory, design, and calibration of the experiment and some preliminary results presented

Demand for Wildlife Hunting in British Columbia

We present estimates of the demand for hunting licenses by residents and non residents in British Columbia for the period 1971–2000. We obtain estimates of both short-run and long- run price elasticities and discuss their revenue implications for future fee increases. We find the demand by non residents to be strongly correlated with U.S. income variation over the business cycle, but find no such role for cyclical income variation for resident hunters. The ability of the government to increase revenues from resident hunters turns out to be limited, particularly in the long run, while greater opportunities exist to raise revenues from U.S. hunters as short- and long-run price elasticities of demand are quite inelastic. We argue that conservation surcharges on foreign hunters are one way to capture more of the resource rent.recreation demand, resource revenues and rent capture, conservation surcharges