به منظور مطالعه و شناسایی فون استراکودهای بنتیک در دریای مکران (عمان) از 12 ایستگاه در اعماق 30 الی 103 متر نمونه برداری های رسوب با استفاده از گرب مدل ون وین با مساحت 1/0 متر مربع برداشت شد. در هر ایستگاه 3 زیرنمونه با استفاده از کورر دستی (مساحت 15/6 سانتی متر مربع) جهت مطالعه استراکودها برداشت گردید. در این مطالعه 80 گونه استراکود شناسایی گردید و انتشار جغرافیای زیستی آنها با مناطق دیگر مقای...

J. R. Butnor is aff i l iated with the Southern Research Stat ion, USDA Forest Service, 3041 Cornwallis Road, Research Triangle Park, NC 27709 USA. J. R. Sei ler is aff i l ia ted with Virginia Polytechnic Inst i tute and State Universi ty , Department of Forestry, Blacksburg, VA 24061 USA. J. A. Gray is affiliated with the Virginia Polytechnic Institute and State University, Deparment of Plant...

9 10 Abstract 11 12 Declining red pine, Pinus resinosa (Aitman), stands in the Great Lakes region appear to arise from a complex of biotic and 13 abiotic factors. We monitored stem and root colonizing beetles in declining and healthy plantations in Wisconsin from 1997 to 14 1999. We also conducted systematic field excavations and laboratory isolations of various root pathogens. Multiple funnel ...

Longleaf pine (Pinus palustris Mill) was once the main southern pine species found throughout the southeastern United States, encompassing approximately 38 million hectares (6). After nearly complete destruction of the longleaf pine ecosystem, restoration efforts in recent years have caused resurgence in the planting of longleaf pine on many state and federal lands (14). Many factors have signi...

Otrosina, W. J.. Hess, N. J., Zamoch. S. J.. Perry, T. J., and Jones, J. P 1997. Blue-stain fungi associated with roots of southem’pine trees attacked by the southern pine beetle, Dendmctonus front&s. Plant Dis. 81942945. Forty paired plots were established from eastern Texas to Alabama to study root-infecting, bluestain fungi in southern pine stands undergoing southern pine beetle (SPB) attack...

The guidebook is not merely a registration of the city and its historical evolution or of the changing preferences of visitors but rather a device that selects and arranges aspects of the city—real as well as imaginary—into a coherent representation of that city. This is particularly the case in Rome, a city composed of three different entities: the ancient, the Christian, and—from the second h...