Journal
REVIEWS IN AQUACULTURE
Volume 14, Issue 3, Pages 1671-1694Publisher
WILEY
DOI: 10.1111/raq.12669
Keywords
census techniques; ecosystem services; environmental monitoring; marine ecology; seaweed aquaculture
Categories
Funding
- Research Councils UK
- Centre for Environment, Fisheries and Aquaculture Science
- University of Exeter
- Marine Biological Association
- UK Research and Innovation [MR/S032827/1]
- Worshipful Company of Fishmongers, Fishmongers Charity Trust
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Macroalgal cultivation plays a significant role in future food and energy security, sustainable livelihoods, ecosystem services, and habitat provisioning. However, there is limited research on assessing the contribution of colonizing species to healthy ecosystem functioning in macroalgal cultivation. This review evaluates techniques used to quantify habitat provisioning in and around macroalgal cultivation sites and highlights the need for standardized methods for comprehensive ecological valuation.
Macroalgal cultivation is expanding rapidly, and promises to contribute significantly towards future food and energy security, sustainable livelihoods, ecosystem services and habitat provisioning for a range of associated organisms globally. Habitat provisioning underpins biodiversity and ecosystem structure and functioning, supports many ecosystem services and has possible benefits to other marine industries, including enhancement of commercial fish stocks. In macroalgal cultivation, however, only recently has habitat provisioning started to be assessed at a local scale (within a farm's footprint) and with a range of different approaches. This review evaluates techniques used to quantify habitat provisioning in and around macroalgal cultivation sites, for species ranging from microorganisms to megafauna, and outlines recommendations to enable a more comprehensive ecological valuation of macroalgal cultivation in the future. The majority of information on biodiversity associated with macroalgal cultivation is associated with quantifying biofouling or pest organisms, rather than the contribution of colonising species to healthy ecosystem functioning. We suggest how better monitoring of macroalgal cultivation could enable an ecosystem approach to aquaculture (EAA) in the future. To achieve this, we highlight the need for standardised and robust methods for quantifying habitat provisioning that will enable assessment and monitoring of macroalgal cultivation sites of varying scales and within different regions and environmental settings. Increased evidence for the potential habitat value of macroalgal cultivation sites will help inform and shape marine legislation, licencing and certification for macroalgal farmers and potentially reduce marine user conflicts, helping the industry to continue to grow sustainably using EAA.
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