• Publications
  • Influence
Why are all colour combinations not equally represented as flower-colour polymorphisms?
•  Flower-colour polymorphism within the British flora appears more common in species whose flowers typically contain pink, purple or blue anthocyanin pigments rather than other coloured pigments. InExpand
  • 131
  • 10
A unifying evolutionary theory for the biomass–diversity–fertility relationship
Although a widely accepted ecological theory predicts that more diverse plant communities should be better able to capture resources and turn carbon dioxide into biomass, the most productiveExpand
  • 34
  • 2
Isozyme variation in a number of populations of Theobroma cacao L. obtained through various sampling regimes
SummaryIsozyme polymorphism in four enzyme systems was used to estimate the genetic diversity in nine populations of Theobroma cacao L. The distribution of allelic variation observed in this studyExpand
  • 18
  • 2
Effects of spatial distribution on the decomposition of sheep faeces in different vegetation types
The relative rate of sheep faeces breakdown was investigated in different vegetation types comprising Cichorium intybus, Lolium perenne, Lotus corniculatus and Trifolium repens across a range of plotExpand
  • 17
  • 1
GM risk assessment: Pollen carriage from Brassica napus to B. rapa varies widely between pollinators
Abstract Characterizing insect pollen carriage between closely related plant species is especially challenging where source species possess morphologically identical pollen and share many pollinatorsExpand
  • 4
  • 1
  • PDF
A two-pollinator model for the evolution of floral complexity
For a new, more complex floral form to become established in a population it must overcome the problem of frequency-dependent constancy to successfully attract pollinators. This may be achieved byExpand
  • 7
  • 1
The role of white clover in the loss of diversity in grassland habitat restoration
A field experiment was designed to recreate a species-rich mesotrophic grassland community of conservation worth. Trifolium repens (white clover) was observed to increase significantly in bothExpand
  • 23
  • 1
Flower colour phenology in British mesotrophic grassland communities
Descriptions of anthropocentric phenologies of flower colour were obtained for all thirteen British mesotrophic grassland communities, defined by the National Vegetation Classification. They wereExpand
  • 8
  • 1
Isolation by distance in the crustose lichens Candelariella vitellina and Placynthium nigrum colonising gravestones in northeast Scotland
  • J. Warren
  • Biology
  • Biodiversity & Conservation
  • 1 February 2003
The majority of estimates of isolation by distance are produced byindirect molecular methods rather than direct observation of dispersal events orcolonisation rates. This is in part due to technicalExpand
  • 5
  • 1
The effect of Cichorium intybus and Lotus corniculatus on nematode burdens and production in grazed lambs
This report was presented at the UK Organic Research 2002 Conference. The study was designed to examine the hypothesis that chicory (Cichorium intybus) and Lotus sp. (Lotus corniculatus) have theExpand
  • 1
  • 1
  • PDF