نتایج جستجو برای: productivity loss
تعداد نتایج: 526824 فیلتر نتایج به سال:
Land use intensification is associated with loss of biodiversity and altered ecosystem functioning. Until now most studies on the relationship between biodiversity and ecosystem functioning focused on random loss of species, while loss of rare species that usually are the first to disappear received less attention. Here we test if the effect of rare microbial species loss on plant productivity ...
PURPOSE To estimate the annual loss of productivity from blindness and moderate to severe visual impairment (MSVI) using simple models (analogous to how a rapid assessment model relates to a comprehensive model) based on minimum wage (MW) and gross national income (GNI) per capita (US$, 2011). METHODS Cost of blindness (COB) was calculated for the age group ≥50 years in nine sample countries ...
One of the major goals in ecology is to determine the mechanisms that drive the asymptotic increase in ecosystem productivity with plant species diversity. Niche complementarity, the current paradigm for the asymptotic diversity-productivity pattern, posits that the addition of species to a community increases productivity because each species specializes on different resources and thus can mor...
International Perspectives on Sexual and Reproductive Health 180 complications (0.4–0.5). •Loss of productivity. Only two characteristics were associated with the respondent or other household members having experienced reduced productivity (inability to work, to earn or both) because of the respondent’s abortion-related morbidity. The odds of productivity loss among women who had spent one or ...
Fish habitat loss has been prevalent over the last century in Canada. To prevent further erosion of the resource base and ensure sustainable development, Fisheries and Oceans Canada enacted the habitat provisions of the Fisheries Act in 1976. In 1986, this was articulated by a policy that a "harmful alteration, disruption, or destruction to fish habitat" (HADD) cannot occur unless authorised wi...
OBJECTIVE To assess the association of diabetes, hypertension, and high cholesterol with economic and humanistic outcomes among overweight or obese individuals. METHODS Data were from the 2006 National Health and Wellness Survey and were limited to overweight or obese adults (BMI > 27). Outcomes assessed include the SF-8, resource use, and the Work Productivity and Activity Impairment questio...
This theoretical study reports on the assessment of productivity loss in air-conditioned office buildings using the PMVapproach and makes use of Wyon’s reviews [D.P. Wyon, P.O. Fanger, B.W. Olesen, C.J.K. Pedersen, The mental performance of subjects clothed for comfort at two different air temperatures, Ergonomics 18 (1975) 358–374; D.P. Wyon, Individual microclimate control: required range, pr...
At eight European field sites, the impact of loss of plant diversity on primary productivity was simulated by synthesizing grassland communities with different numbers of plant species. Results differed in detail at each location, but there was an overall log-linear reduction of average aboveground biomass with loss of species. For a given number of species, communities with fewer functional gr...
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