Site Archives Ascophyllum nodosum

Subsidy by Ascophyllum nodosum increases growth rate and survivorship of Patella vulgata

  • Posted by Andy
  • August 31, 2008

Andrew J. Davies, Mark P. Johnson, Christine A. Maggs
Published in Marine Ecology-Progress Series (2008)
Limpets, predominantly Patella vulgata, have been associated with damaged or receding canopies of Ascophyllum nodosum. Although the damage results from limpet grazing, the benefits that limpets gain from this behaviour are unclear as A. nodosum is thought to be well defended from [...]

Limpet grazing and loss of Ascophyllum nodosum canopies on decadal time scales

  • Posted by Andy
  • April 6, 2008

Andrew J. Davies, Mark P. Johnson, Christine A. Maggs
Published in Marine Ecology-Progress Series (2007)

The role of limpet grazing in preventing the development of algal canopies is a recurrent theme in intertidal ecology. Less is known about interactions of limpets with the long-term dynamics of established canopies. Aerial photographs indicate that intertidal canopy cover has declined [...]