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Options for managing human threats to high seas biodiversity
O'Leary, B.C.; Hoppit, G.; Townley, A.; Allen, H.L.; McIntyre, C.J.; Roberts, C.M. (2020). Options for managing human threats to high seas biodiversity. Ocean Coast. Manag. 187: 105110. https://dx.doi.org/10.1016/j.ocecoaman.2020.105110
In: Ocean & Coastal Management. Elsevier Science: Barking. ISSN 0964-5691; e-ISSN 1873-524X, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal
Author keywords
    Areas beyond national jurisdiction; ABNJ; High seas; Marine protected areas; UNCLOS

Authors  Top 
  • O'Leary, B.C.
  • Hoppit, G.
  • Townley, A.
  • Allen, H.L.
  • McIntyre, C.J.
  • Roberts, C.M.

Abstract
    Areas beyond national jurisdiction (ABNJ) constitute 61% of the world's oceans and are collectively managed by countries under the United Nations Convention on the Law of the Sea (UNCLOS). Growing concern regarding the deteriorating state of the oceans and ineffective management of ABNJ has resulted in negotiations to develop an international legally binding instrument (ILBI) for the conservation and sustainable use of biodiversity beyond national jurisdiction under UNCLOS. To inform these negotiations, we identified existing and emerging human activities and influences that affect ABNJ and evaluated management options available to mitigate the most pervasive, with highest potential for impact and probability of emergence. The highest-ranking activities and influences that affect ABNJ were fishing/hunting, maritime shipping, climate change and its associated effects, land-based pollution and mineral exploitation. Management options are diverse and available through a variety of actors, although their actions are not always effective. Area-based management tools (ABMTs), including marine protected areas (MPAs), were the only consistently effective option to mitigate impacts across high-ranked activities and influences. However, addressing land-based pollution will require national action to prevent this at its source, and MPAs offer only a partial solution for climate change. A new ABNJ ILBI could help unify management options and actors to conserve marine biodiversity and ensure sustainable use. Incorporating a mechanism to establish effective ABMTs into the ILBI will help deliver multiple objectives based on the ecosystem approach.

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