Important Marine Mammal Area Network

On December 06, 2021, the endangered Caspian seal habitat had been identified in three Important Marine Mammal Areas (IMMAs).

Today, the nine members of the IMMA Secretariat are pleased to announce the publication of their comprehensive paper “The Important Marine Mammal Area Network: A Tool for Systematic Spatial Planning in Response to the Marine Mammal Habitat Conservation Crisis”. The paper summarized the long-term work of the IUCN Joint SSC/WCPA Marine Mammal Protected Areas Task Force Secretariat in the framework of the IMMAs Programme implementation. The Secretariat presents detailed information on the principles and algorithm for creating Important Marine Mammal Area network around the world, including IMMAs for the endangered Caspian seal inhabiting the Caspian Sea. The authors describe IMMAs selection criteria and the main stages of their identification, give summary statistic on IMMAs for the period of 2016-2021 (on marine mammal species, IMMAs size and location, etc.), and illustrate the various ways to support conservation and management.

The Important Marine Mammal Area Network: A Tool for Systematic Spatial Planning in Response to the Marine Mammal Habitat Conservation Crisis

©2022. Michael J. Tetley (1), Gill T. Braulik (1, 2), Caterina Lanfredi (1, 3), Gianna Minton (1,4), Simone Panigada (1, 3), Elena Politi (1,3), Margherita Zanardelli (1,3), Giuseppe Notarbartolo di Sciara (1, 3)†, Erich Hoyt (1, 5)†

(1) IUCN Joint SSC/WCPA Marine Mammal Protected Areas Task Force, Gland, Switzerland.
(2) Sea Mammal Research Unit, University of St. Andrews, St. Andrews, United Kingdom.
(3) Tethys Research Institute, Milan, Italy.
(4) Megaptera Marine Conservation, Hague, the Netherlands.
(5) Whale and Dolphin Conservation, Chippenham, United Kingdom.

The Important Marine Mammal Areas (IMMAs) initiative was launched by the Marine Mammal Protected Areas Task Force of the International Union for the Conservation of Nature in 2016, as a response to a conservation crisis in the protection of marine mammals and wider global ocean biodiversity. IMMAs identify discrete portions of habitat that are important for one or more marine mammal species, and that have the potential to be delineated and managed for conservation. They are identified by scientific experts during regional workshops, on the basis of satisfying one or more of eight criteria that capture critical aspects of marine mammal biology, ecology and population structure. Candidate IMMAs undergo independent scientific review prior to being accepted, and then are publicly available via a searchable and downloadable database and a dedicated online e-Atlas. Between 2016 and 2021, eight expert workshops – engaging more than 300 experts – have resulted in the identification of 173 IMMAs located in 90 countries or territories, across a third of the globe. IMMAs identified to date provide important habitats for 58 of the 131 recognized marine mammal species. Around two-thirds of all IMMAs (65%) were identified on the basis of important habitat for a marine mammal species that is threatened on the IUCN Red List. Approximately 61% of IMMA surface areas occur within Exclusive Economic Zone waters, while 39% fall within areas beyond national jurisdiction.

The Task Force undertook implementation planning exercises for IMMAs in Palau (Micronesia), the Andaman Islands (India) and the Bazaruto Archipelago and Inhambane Bay (Mozambique), engaging with a range of stakeholders including government and management bodies. IMMAs are increasingly being utilized in environmental impact assessments, marine planning exercises and in international, national and supra-regional conservation, policy and management initiatives, including the Convention on Migratory Species and Convention on Biological Diversity, as well as the design and management of Marine Protected Areas (MPAs) and the extension of MPA networks. The Task Force is working toward completing a global network of IMMAs that will contribute the scientific information needed to fulfill the current collective goal of protecting 30% of the ocean by 2030.

To read more and download the full free copy of the paper: Tetley et al., 2022.

In the photo above: Caspian seals. Malyy Zhemchuzhnyy Island, Russia (author E. Polonskiy).


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