نتایج جستجو برای: nurseries
تعداد نتایج: 3940 فیلتر نتایج به سال:
Seagrass meadows globally are disappearing at a rapid rate with physical disturbances being one of the major drivers of this habitat loss. Disturbance of seagrass can lead to fragmentation, a reduction in shoot density, canopy height and coverage, and potentially permanent loss of habitat. Despite being such a widespread issue, knowledge of how such small scale change affects the spatial distri...
Nurseries are emerging as a new form of entrepreneurship in the tourism sector. These nurseries focus on production and sale plants, flowers related products, take advantage area's natural attractions to offer unique experiences visitors. The development microenterprises such provides multiple benefits for community environment. First, they generate local employment, which contributes economic ...
Nursery Production Systems Are Complex Systems Horticultural nurseries are exceedingly complex agricultural systems, making pest and pathogen management very challenging. Compared to crop monocultures, nurseries are characterized by extreme heterogeneity in plant material. The typical agricultural row crop contains a single cultivar of a single species, grown over hundreds or even thousands of ...
to treat melanomas, lung, head, and neck cancers. Ornamental yews have been identified as a potential renewable source of taxol and related taxanes. Commercial nurseries were surveyed during Summer and Fall 1991 as a basis for estimating populations of Taxus cultivars currently growing in the United States. Clippings of selected cultivars were sampled from nursery fields in Ohio Production & Ma...
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Two models have been advanced to account for the apparent ease with which attention can be divided in music: a `̀ divided attention’ ’ model postulates that listeners effectively manage to follow two or more melodic lines played simultaneously. According to a `̀ ® gure-ground model,’’ the harmonic coherence of Western polyphonies allows a listener to focus on one melody while staying aware of the...
We all think we give good advice, and we think we do it well. We’ve mastered the anticipatory guidance section of the well-child or nursery visit. We have our formula: we cover the salient topics, throw in some personal experience, and assume our parental advice on child rearing has been received and understood. Unfortunately, as shown by Eisenberg et al in this issue of Pediatrics, we appear t...
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