Sand nourishment for multifunctional coastal climate adaptation: three key implications for researchers

Increased climate impacts threaten coastal functions globally, highlighting the need for multifunctional coastal climate adaptation. Sand nourishment can adapt sandy coasts to sea level rise, mitigate erosion, increase flood safety, enhance ecological habitats and expand recreational space. Therefor...

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Main Authors: Haye H. Geukes, Tosca T. Kettler, Eva M. Lansu, Vincent Bax, Solveig Höfer, Matthieu A. de Schipper, Renske de Winter, Arjen P. Luijendijk, Valerie C. Reijers, Peter M. van Bodegom, Wietse I. van de Lageweg, Tjisse van der Heide, Alexander P.E. van Oudenhoven
Format: Article
Language:English
Published: Elsevier 2024-12-01
Series:Nature-Based Solutions
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Online Access:http://www.sciencedirect.com/science/article/pii/S277241152400082X
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author Haye H. Geukes
Tosca T. Kettler
Eva M. Lansu
Vincent Bax
Solveig Höfer
Matthieu A. de Schipper
Renske de Winter
Arjen P. Luijendijk
Valerie C. Reijers
Peter M. van Bodegom
Wietse I. van de Lageweg
Tjisse van der Heide
Alexander P.E. van Oudenhoven
author_facet Haye H. Geukes
Tosca T. Kettler
Eva M. Lansu
Vincent Bax
Solveig Höfer
Matthieu A. de Schipper
Renske de Winter
Arjen P. Luijendijk
Valerie C. Reijers
Peter M. van Bodegom
Wietse I. van de Lageweg
Tjisse van der Heide
Alexander P.E. van Oudenhoven
author_sort Haye H. Geukes
collection DOAJ
description Increased climate impacts threaten coastal functions globally, highlighting the need for multifunctional coastal climate adaptation. Sand nourishment can adapt sandy coasts to sea level rise, mitigate erosion, increase flood safety, enhance ecological habitats and expand recreational space. Therefore, sand nourishment is increasingly regarded as a promising nature-based strategy for coastal climate adaptation. However, despite this growing recognition, the assessment of how sand nourishment design impacts multifunctional adaptation remains limited. In this perspective article, we argue for three key lessons for researchers to optimise assessing multifunctional coastal climate adaptation by sand nourishment. We conducted stakeholder workshops to scope and inform our perspective, performed semi-structured literature reviews to concretise and validate this for international applications, built a qualitative model to visualise our interdisciplinary overview of how nourishments impact coastal multifunctionality, reflected on this in expert workshops, and identified implications for researchers. In this manner, we assessed the effects of nourishment design on coastal morphology, ecology, socio-economics and ecosystem services in realising the key policy goals of flood safety, nature and recreation. We found that sand nourishment design can result in conflicts between policy goals, generate ambiguous outcomes and lead to system-wide feedback effects. As such, we identified three key lessons: (1) conflicts between policy goals require informing political decision-making on prioritisation between coastal functions, (2) concreteness is needed on otherwise ambiguous functions, and (3) ongoing, multidisciplinary system-wide monitoring is essential. We thus call for a holistic approach to sand nourishment design and encourage researchers from diverse expertise and localities to expand on and adapt our findings to optimise informing sand nourishment design for delivering multifunctional coastal climate adaptation worldwide.
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spelling doaj-art-d4b0a8e62c2a42f88162878e72cab36b2024-12-17T05:02:08ZengElsevierNature-Based Solutions2772-41152024-12-016100191Sand nourishment for multifunctional coastal climate adaptation: three key implications for researchersHaye H. Geukes0Tosca T. Kettler1Eva M. Lansu2Vincent Bax3Solveig Höfer4Matthieu A. de Schipper5Renske de Winter6Arjen P. Luijendijk7Valerie C. Reijers8Peter M. van Bodegom9Wietse I. van de Lageweg10Tjisse van der Heide11Alexander P.E. van Oudenhoven12Institute of Environmental Sciences (CML), Leiden University, Leiden, The Netherlands; Author to whom any correspondence should be addressed.Department of Hydraulic Engineering, Delft University of Technology, Delft, The NetherlandsDepartment of Coastal Systems, Royal Netherlands Institute for Sea Research (NIOZ), Den Burg, The NetherlandsDepartment of Technology, Water & Environment, Building with Nature Research Group, HZ University of Applied Sciences, Middelburg, The NetherlandsDepartment of Coastal Systems, Royal Netherlands Institute for Sea Research (NIOZ), Den Burg, The Netherlands; Conservation Ecology Group, University of Groningen, Groningen, The NetherlandsDepartment of Hydraulic Engineering, Delft University of Technology, Delft, The NetherlandsUnit Hydraulic Engineering, Deltares, Delft, The NetherlandsDepartment of Hydraulic Engineering, Delft University of Technology, Delft, The Netherlands; Unit Hydraulic Engineering, Deltares, Delft, The NetherlandsDepartment of Physical Geography, Utrecht University, Utrecht, The NetherlandsInstitute of Environmental Sciences (CML), Leiden University, Leiden, The NetherlandsDepartment of Technology, Water & Environment, Building with Nature Research Group, HZ University of Applied Sciences, Middelburg, The NetherlandsDepartment of Coastal Systems, Royal Netherlands Institute for Sea Research (NIOZ), Den Burg, The Netherlands; Conservation Ecology Group, University of Groningen, Groningen, The NetherlandsInstitute of Environmental Sciences (CML), Leiden University, Leiden, The NetherlandsIncreased climate impacts threaten coastal functions globally, highlighting the need for multifunctional coastal climate adaptation. Sand nourishment can adapt sandy coasts to sea level rise, mitigate erosion, increase flood safety, enhance ecological habitats and expand recreational space. Therefore, sand nourishment is increasingly regarded as a promising nature-based strategy for coastal climate adaptation. However, despite this growing recognition, the assessment of how sand nourishment design impacts multifunctional adaptation remains limited. In this perspective article, we argue for three key lessons for researchers to optimise assessing multifunctional coastal climate adaptation by sand nourishment. We conducted stakeholder workshops to scope and inform our perspective, performed semi-structured literature reviews to concretise and validate this for international applications, built a qualitative model to visualise our interdisciplinary overview of how nourishments impact coastal multifunctionality, reflected on this in expert workshops, and identified implications for researchers. In this manner, we assessed the effects of nourishment design on coastal morphology, ecology, socio-economics and ecosystem services in realising the key policy goals of flood safety, nature and recreation. We found that sand nourishment design can result in conflicts between policy goals, generate ambiguous outcomes and lead to system-wide feedback effects. As such, we identified three key lessons: (1) conflicts between policy goals require informing political decision-making on prioritisation between coastal functions, (2) concreteness is needed on otherwise ambiguous functions, and (3) ongoing, multidisciplinary system-wide monitoring is essential. We thus call for a holistic approach to sand nourishment design and encourage researchers from diverse expertise and localities to expand on and adapt our findings to optimise informing sand nourishment design for delivering multifunctional coastal climate adaptation worldwide.http://www.sciencedirect.com/science/article/pii/S277241152400082XClimate adaptationMultifunctionalitySand nourishmentNature-based SolutionsInterdisciplinaryConflicts
spellingShingle Haye H. Geukes
Tosca T. Kettler
Eva M. Lansu
Vincent Bax
Solveig Höfer
Matthieu A. de Schipper
Renske de Winter
Arjen P. Luijendijk
Valerie C. Reijers
Peter M. van Bodegom
Wietse I. van de Lageweg
Tjisse van der Heide
Alexander P.E. van Oudenhoven
Sand nourishment for multifunctional coastal climate adaptation: three key implications for researchers
Nature-Based Solutions
Climate adaptation
Multifunctionality
Sand nourishment
Nature-based Solutions
Interdisciplinary
Conflicts
title Sand nourishment for multifunctional coastal climate adaptation: three key implications for researchers
title_full Sand nourishment for multifunctional coastal climate adaptation: three key implications for researchers
title_fullStr Sand nourishment for multifunctional coastal climate adaptation: three key implications for researchers
title_full_unstemmed Sand nourishment for multifunctional coastal climate adaptation: three key implications for researchers
title_short Sand nourishment for multifunctional coastal climate adaptation: three key implications for researchers
title_sort sand nourishment for multifunctional coastal climate adaptation three key implications for researchers
topic Climate adaptation
Multifunctionality
Sand nourishment
Nature-based Solutions
Interdisciplinary
Conflicts
url http://www.sciencedirect.com/science/article/pii/S277241152400082X
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