نتایج جستجو برای: harvest pattern
تعداد نتایج: 370740 فیلتر نتایج به سال:
EDITOR’S NOTE: This is the first in a four-part series of articles dealing with the Church’s ministry to the elderly. This article will attempt to give a brief profile of the problems faced by the aging. Succeeding articles will treat tradi tional Church responses to the needs of the elderly and look at some new approaches to the situa tion and new directions of action, including South Bend H...
We evaluate the current commercial harvest of harp seal (Pagophilus groenlandicus) and proposed subsistence harvests of northern fur seal (Callorhinus ursinus) pups based on intraspecific comparisons. These comparisons utilize a pattern derived from 167 cases of estimated consumption rates by large mammals. In all cases, the predation rates involve large mammal prey less than 1 year of age. Rec...
Sealing log books from 75 out of 79 commercial harvest cruises carried out between 1972 and 1994 in the Sea of Okhotsk, Russia, were analyzed to describe spatial and temporal allocation of ice-associated seal harvest effort, species composition of catches, total harvest rates, and related parameters for species including ringed (Pusa hispida), ribbon (Histriophoca fasciata), bearded (Erignathus...
GREEN-TREE RETENTION IN HARVEST UNITS: BOON OR BUST FOR BIODIVERSITY? i n s i d e How Much to Retain?.................................................... 3 What Pattern to Retain? .............................................. 3 A Forest Patch for a Lifeboat ..................................... 4 Demonstrating the Power of Experimental Studies ................................................... 5
Small rural Alaskan communities face many challenges surrounding rapid social and ecological change. The role of local subsistence resources may change over time because of changes in social perception, economic need, and cultural patterns of use. We look at the Bering Sea’s Pribilof Islands, comprising two very small communities, and investigate the relationship between the local residents and...
Stock-recruitment models have been used for decades in fisheries management as a means of formalizing the expected number of offspring that recruit to a fishery based on the number of parents. In particular, Ricker's stock recruitment model is widely used due to its flexibility and ease with which the parameters can be estimated. After model fitting, the spawning stock size that produces the ma...
The Evaluation of Wheat Losses Harvesting in Two Conventional Combine (John Deere 1165, 955) in Iran
Wheat is one of the most important food staff in consumption pattern of each country. More than 50 percent of energy is provided by bread in the developing countries. The aim of this study was measuring wheat losses during pre-harvest and harvest stages in Chaharmahal and Bakhtiari province of Iran in year 2013. Wheat losses at harvest stages were measured to wheat varieties in 2 levels of Omid...
The Evaluation of Wheat Losses Harvesting in Two Conventional Combine (John Deere 1165, 955) in Iran
Wheat is one of the most important food staff in consumption pattern of each country. More than 50 percent of energy is provided by bread in the developing countries. The aim of this study was measuring wheat losses during pre-harvest and harvest stages in Chaharmahal and Bakhtiari province of Iran in year 2013. Wheat losses at harvest stages were measured to wheat varieties in 2 levels of Omid...
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