Study

The effects of recreational Paracentrotus lividus fishing on distribution patterns of sea urchins at Ustica Island MPA (Western Mediterranean, Italy).

  • Published source details Gianguzza P., Chiantore M., Bonaviri C., Cataneo-Vietti R., Vielmini I. & Riggio S. (2006) The effects of recreational Paracentrotus lividus fishing on distribution patterns of sea urchins at Ustica Island MPA (Western Mediterranean, Italy).. Fisheries Research, 81, 37-44.

Actions

This study is summarised as evidence for the following.

Action Category

Designate a Marine Protected Area with a zonation system of activity restrictions

Action Link
Subtidal Benthic Invertebrate Conservation
  1. Designate a Marine Protected Area with a zonation system of activity restrictions

    A site comparison study in 2003–2004 of three rocky seabed sites within a marine protected area with a zonation system, off Ustica Island, Mediterranean Sea, Italy (Gianguzza et al. 2006) found that overall at a fully protected site that had been prohibiting all fishing for 17–18 years, abundances and sizes of two species of sea urchins were higher than at partially protected sites where recreational fishing of purple sea urchins Paracentrotus lividus occurred, but effects varied seasonally. Abundances of purple and black sea urchins Arbacia lixula were higher in the fully protected than the partially protected sites in summer (purple: 2.9 vs 0.7–1.3/m2, black: 3.1 vs 1.7–1.9/m2) and autumn (purple: 4.1 vs 1.6–2.1/m2, black: 2.3 vs 0.7–1/m2), but not spring (purple: 2.3 vs 2.3–2.9/m2, black: 1.5 vs 2.0/m2). Purple sea urchins were larger in the fully protected than the partially protected sites in spring (fully: 45 vs partially: 31–34 mm), summer (43 vs 35–37 mm) and autumn (44 vs 32–35 mm). Black sea urchins were smaller in the fully protected than the partially protected sites in autumn (31 vs 35–37 mm), but similarly sized across sites in spring and summer (37–42 vs 39–45 mm). Ustica Island marine protected area was established in 1986 with a no-take zone and a partially protected zone where some recreational activities take place. In 1994, recreational fishing for purple sea urchin inside the partially protected zone was reopened following undesirable increases in their abundance leading to barren areas. At one site in the no-take zone and two in the partially protected (4–8 m depth), divers identified and counted all urchins along three 10 m2 transects, twice in autumn 2003, in spring 2004, and in summer 2004. The diameter (not including spines) of urchins inside 1 m2 quadrats was measured.

    (Summarised by: Anaëlle Lemasson)

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