Study

Patchiness in resource distribution mitigates habitat loss: insights from high‐shore grazers

  • Published source details Skov M.W., Hawkins S.J., Volkelt-Igoe M., Pike J., Thompson R.C. & Doncaster C.P. (2011) Patchiness in resource distribution mitigates habitat loss: insights from high‐shore grazers. Ecosphere, 2, 1-17.

Actions

This study is summarised as evidence for the following.

Action Category

Create pit habitats (1–50 mm) on intertidal artificial structures

Action Link
Biodiversity of Marine Artificial Structures
  1. Create pit habitats (1–50 mm) on intertidal artificial structures

    A replicated, randomized study in 2006–2008 on an intertidal seawall on open coastline in the English Channel, UK (Skov et al. 2011) found that pit habitats created on the seawall supported similar periwinkle Melarhaphe neritoides abundance regardless of the pit patchiness, but that increasing the pit density increased their abundance. Over 24 months, seawall surfaces with patchy pits supported similar periwinkle abundance (132–176 individuals/surface) to surfaces with evenly-spaced pits (170–208/surface). Abundance increased with increasing pit density (4 pits: 52 individuals/surface; 16 pits: 178/surface; 36 pits: 285/surface; 64 pits: 343/surface) but it was not clear which densities differed significantly from which. Pit habitats were created by drilling into a vertical concrete seawall in June 2006. Arrays of round pits (diameter: 10 mm; depth: 7 mm) were patchy (four patches/surface) or evenly-spaced on 500 × 500 mm seawall surfaces, with different densities (4, 16, 36 or 64 pits/surface). There were three surfaces with each arrangement-density combination randomly arranged at highshore. Existing cracks and holes were filled with cement and organisms were removed from surfaces when pits were created, then small periwinkles were counted on surfaces during low tide over 24 months.

    (Summarised by: Ally Evans)

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust