Global ETD Search
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Showing 1 to 5 of 5 for “"calcareous grassland"”.
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Local adaptation to climate change in a calcareous grassland system
… and rainfall have been maintained in intact calcareous grassland since 1993 at the Buxton Climate Change Impacts Laboratory (BCCIL) in northern England (UK). Here I investigated the role of local adaptation as mechanism of the apparent resistance of species' to long-term climate manipulations …
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An investigation of the influence of drought and other soil factors on the structure of a calcareous grassland.
… of drought during the summer period in calcareous grassland on the south-facing slopes of limestone dales in the Peak District of North Derbyshire, Northern England. The main objective of the studies in this thesis was to examine the role of drought as a determinant of the …
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Evaluation du succès de restaurations de pelouses calcicoles de la vallée du Viroin : densité en individus et succès reproducteur de deux espèces cibles.
Calcareous grasslands are local biodiversity « hotspots ». Unfortunately, these exceptional ecosystems have undergone a drastic fragmentation since the abandonment of traditional agro pastoral practices. Consequently, many calcareous grassland species are now in danger. In Belgium, since 1990, many …
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Understanding drivers of long-term change in semi-natural habitats.
… patterns and drivers of vegetation change in calcareous grasslands? Chapters 2 and 3 address the first research question by exploring the dynamics of habitat change over time for a rural county in southern England. Historical surveys and contemporary spatial datasets were used to construct a …
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Palaeoecological studies of selected mires in the Craven District of West Yorkshire with special reference to the late Devensian period and the Ulmus decline
… first a very open vegetation and a species-rich calcareous grassland were formed. The spread of juniper scrub preceded the expansion of tree birches. It is tentatively inferred that the early part of the Lateglacial is interrupted by a phase of deteriorating climate and that the relative warmth …