Papers by Nigel Blackstock
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Although widespread in Europe and North America, Carex flava (Large Yellow sedge), sensu stricto,... more Although widespread in Europe and North America, Carex flava (Large Yellow sedge), sensu stricto, is a rare species in Britain, only found at a single location, Roudsea Wood in South Cumbria. Within this site the plant is largely restricted to one area, the interface between limestone woodland and a raised mire. Concern over the survival of the plant led to the establishment of permanent quadrats to monitor the success of the population in 1967. A belt transect the width and length of the population was established (approx. 60m x 1km). Presence/absence of flowering C. flava plants in each square yard (0.912 x 0.912m) of the transect was recorded and the survey repeated every 5-7 years. The long term results show that some areas of the population have increased, while others have seriously declined. Potential reasons for these trends including management, succession and introgression are discussed along with the limitations of such surveys.
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Plant Systematics and Evolution, 2010
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Nordic Journal of Botany, 2014
ABSTRACT Th e type of Carex filiformis is an illustration, which is pluri-interpretable and there... more ABSTRACT Th e type of Carex filiformis is an illustration, which is pluri-interpretable and therefore an epitype is designated here. As epitypified, C. filiformis L. becomes synonymous with Carex montana L. (the latter getting priority), and therefore not the correct name for Carex tomentosa L. as stated by Nelmes and other authors. Carex tomentosa is the accepted name for the taxon sometimes referred to as C. filiformis .
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Botanical Journal of the Linnean Society, 2013
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The user has requested enhancement of the downloaded file. All in-text references underlined in b... more The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.
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Papers by Nigel Blackstock