Search the EPA Research Database

Project title

Enhancing Blue Carbon and Ecological Services through Nature-Based Solutions: Integrated Restoration in Irish Coastal Waters

Primary Funding Agency

Environmental Protection Agency

Co-Funding Organisation(s)

n/a

Lead Organisation

University College Dublin (UCD)

Lead Applicant

Paul Brooks

Project Abstract

Coastal habitats are essential ecosystems that provide numerous benefits to both human populations and the environment. However, these habitats are increasingly under threat from human activities such as pollution and habitat destruction. Oysters reefs and seagrass beds are key contributors to biodiversity as they form complex three-dimensional structures that provide habitats for a diverse range of species, including other shellfish, fish, and invertebrates. These habitats offer protection, feeding grounds, and nursery areas for numerous organisms, thereby enhancing overall biodiversity. Equally these habitats play complementary roles in improving water quality in coastal areas. Oysters are efficient filter feeders, extracting particles, algae, and excess nutrients from the water as they feed. A single adult oyster can filter large volumes of water daily, helping to reduce nutrient loads that can lead to harmful algal blooms and oxygen depletion. Similarly, seagrasses contribute to water quality improvement by trapping and stabilizing sediments, reducing turbidity, and absorbing nutrients. Together, native oysters and seagrass can act as natural filters, enhancing water clarity and maintaining the health of coastal ecosystems. Native Oyster reefs and seagrass beds can also provide valuable coastal protection and enhance resilience. Oyster reefs act as natural breakwaters, reducing the impact of waves and storm surges, and stabilizing shorelines. The complex structure of oyster reefs dissipates wave energy and helps prevent erosion, safeguarding coastal communities and infrastructure. Seagrass beds, with their extensive root systems, bind sediments and provide natural buffers against coastal erosion. The combined presence of native oysters and seagrass contributes to coastal resilience, mitigating the effects of climate change and protecting vulnerable coastal areas. In addition these habitats capture carbon and as such may play a fundamental role in carbon assimilation and sequestration. Recognizing the need for effective and sustainable solutions to current and future impacts, this project aims to test if oyster reefs and seagrass beds individually or in combination can be used as a viable and worthy option for restoration and use as a nature-based solution on Irish coastlines. In particular within the RESET project we aim to (i) compile and analyse existing data on oyster reefs and seagrass beds in Ireland to inform the selection of study sites, (ii) determine the carbon capture potential of restored habitats (iii) determine the potential of combined restoration of oyster reefs and seagrass beds to provide enhanced benefits, (iv) evaluate the effectiveness (engineering benefits) of nature-based solutions (proposed restoration measures) in mitigating wave energy using novel physical and numerical tools, and (v) identify and quantify how individual and combined species restoration techniques influence current and future wave hydrodynamic scenarios. To do this we will use novel and established methodologies at selected field locations, and state-of-the-art test facilities located at partner universities to evaluate the potential these habitats have as a viable NbS. The findings will be used to underpin coastal management and guide adherence to national and international policies and legislation that aim to improve, protect and restore our vital coastal environments.

Grant Approved

�599,214.00

Research Hub

Natural Environment

Research Theme

Nature Based Solutions: Delivering Co-benefits for the Environment and Society

Start Date

31/03/2024

Initial Projected Completion Date

30/03/2028