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What Works in Conservation 2020

 | 
William J. Sutherland
, 
Lynn V. Dicks
, 
Silviu O. Petrovan
, 
et al.

13. Subtidal benthic invertebrate conservation

13.2 Threat: Transportation and service corridors

Texte intégral

13.2.1 Utility and service lines

No evidence found (no assessment)

1We have captured no evidence for the following interventions:

  • Bury cables and pipelines in the seabed rather than laying them on the seabed
  • Leave utility and service lines in place after decommissioning
  • Remove utility and service lines after decommissioning
  • Set limits on the area that can be covered by utility and service lines at one location
  • Use a different technique when laying and burying cables and pipelines
  • Use cables and pipelines of smaller width.

13.2.2 Shipping lanes

Unknown effectiveness

Cease or prohibit shipping

2Three studies examined the effects of ceasing or prohibiting shipping on subtidal benthic invertebrate populations. All studies were in the North Sea (Belgium, Germany, Netherlands).

3COMMUNITY RESPONSE (2 STUDIES)

4Overall community composition (1 study): One site comparison study in the North Sea found that areas closed to shipping developed different overall invertebrate community compositions compared to areas where shipping occurred.

5Overall species richness/diversity (1 study): One site comparison study in the North Sea found that areas closed to shipping did not develop different overall invertebrate species richness and diversity compared to areas where shipping occurred.

6POPULATION RESPONSE (2 STUDIES)

7Overall abundance (2 studies): Two site comparison studies (one before-and-after) in the North Sea found that areas closed to shipping had similar overall invertebrate abundance and biomass compared to areas where shipping occurred.

8Overall abundance (2 studies): Two site comparison studies (one before-and-after) in the North Sea found that areas closed to shipping had similar overall invertebrate abundance and biomass compared to areas where shipping occurred.

9OTHER (2 STUDIES)

10Overall community energy flow (1 study): One before-after, site comparison study in the North Sea found that after closing an area to shipping, invertebrate community energy flow did not change, but it increased in nearby areas where shipping occurred.

11Species energy flow (1 study): One before-and-after, site comparison study in the North Sea found that closing an area to shipping had mixed effects on species-level energy flow.

12Assessment: unknown effectiveness (effectiveness 35 %; certainty 30 %; harms 0 %).

13https://www.conservationevidence.com/​actions/​2086

No evidence found (no assessment)

14We have captured no evidence for the following interventions:

  • Divert shipping routes
  • Limit, cease or prohibit anchoring from ships/boats/vessels
  • Limit, cease or prohibit recreational boating
  • Periodically move and relocate moorings
  • Provide additional moorings to reduce anchoring
  • Reduce ships/boats/vessels speed limits
  • Set limits on hull depth
  • Use a different type of anchor
  • Use moorings which reduce or avoid contact with the seabed (eco- moorings).

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