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Sairaalasynnytysten turvallisuutta heikentävät tekijät kätilöiden näkökulmasta – systemaattinen kirjallisuuskatsaus
Mapping sagebrush volatile chemotypes along an elevational gradient
Plants form the foundation of most terrestrial ecosystems; therefore, plant chemistry can have important and far-reaching consequences for many ecological interactions and processes. Despite this, few studies have explicitly explored the spatial variation in plant chemistry. We mapped the distribution of volatile emissions of the mountain subspecies of sagebrush in 25 meadows north of Lake Tahoe. This plant exhibits several distinct volatile emission profiles (chemotypes) that are part of the system involved in stimulating induced defenses to different herbivores and pathogens. Sites varied in the volatile chemotypes that were present although three chemotypes were most common. Transitions between the chemotypes were gradual in most cases but abrupt in others. The three common volatile chemotypes sorted out along an elevational gradient. This chemotypic pattern sets the stage for other interactions such as those that result in different abundances of herbivores