The structure of Cochlearia groenlandica population along the birdn colony influence gradient (Hornsund, Spitsbergen)

摘要

In spite of general knowledge that guano deposited near seabird colonies enhances fertility of poor polar soils, improves primary production and influences the tundra plant community, there are very few quantitative studies concerning plant responses to ornithogenic fertilization on the population level. We studied density, size variability and proportions of generative to vegetative individuals of polar scurvygrass Cochlearia groenlandica along a seabird influence gradient in south-west Spitsbe