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Evolution of the Beach–Dune Systems in Mediterranean Andalusia (Spain) Using Two Different Proxies

Author

Listed:
  • Rosa Molina

    (Department of Earth Sciences, Faculty of Marine and Environmental Sciences, University of Cádiz, Polígono Río San Pedro s/n, 11510 Puerto Real, Cádiz, Spain)

  • Giorgio Anfuso

    (Department of Earth Sciences, Faculty of Marine and Environmental Sciences, University of Cádiz, Polígono Río San Pedro s/n, 11510 Puerto Real, Cádiz, Spain)

  • Belén González-Aguilar

    (Department of Earth Sciences, Faculty of Marine and Environmental Sciences, University of Cádiz, Polígono Río San Pedro s/n, 11510 Puerto Real, Cádiz, Spain)

  • Giorgio Manno

    (Department of Engineering, Università degli Studi di Palermo, Viale delle Scienze, Building 8, 90128 Palermo, Italy)

  • J. Andrew G. Cooper

    (School of Geography and Environmental Science, Ulster University, Cromore Road, Coleraine BT52 1SA, UK
    School of Agricultural, Earth and Environmental Sciences, Discipline of Geology, University of KwaZulu-Natal, University Road, Westville, Durban 4000, South Africa)

Abstract

Coastal environments are complex systems that are influenced by a combination of natural processes and human activities. Scientific interest in the effects of coastal erosion/accretion and climatic change-related processes has greatly increased in recent decades due to the growing human development along coastal areas. This paper investigates the state and evolution of beach–dune systems for the 1977–2001 and 2001–2019 periods of the Mediterranean coast of Andalusia (Spain) using two different proxies: the dune toe line, which was used to track foredunes evolution, and the high-water line, which was used to assess shoreline evolution. Results showed a general erosional behavior of the studied beach–dune systems and identified cases where the main trend was altered through human interventions. During the 1977–2001 period, foredunes essentially showed erosion (54%), accretion (24%), and stability (22%) and shorelines showed accretion (40%) and erosion and stability (34% each). During the 2001–2019 period, foredunes essentially showed erosion (42%), stability (30%), and accretion (28%), and shorelines showed erosion (40%), accretion (34%), and stability (26%). Combining the evolution classes of each proxy (dune toe/shoreline) allows the behavior of both shoreline proxies to be assessed together and provides insights additional to those derived from the use of a single proxy. In this regard, Erosion/erosion (EE) and Accretion/accretion (AA) were the most frequent behaviors in the first and second periods. The results obtained provide additional insights on the nature and drivers of coastal change that aid local coastal managers and administrations in understanding erosion processes. The method can be applied to other areas around the world where a similar database is available.

Suggested Citation

  • Rosa Molina & Giorgio Anfuso & Belén González-Aguilar & Giorgio Manno & J. Andrew G. Cooper, 2024. "Evolution of the Beach–Dune Systems in Mediterranean Andalusia (Spain) Using Two Different Proxies," Land, MDPI, vol. 13(8), pages 1-21, August.
    • Handle: RePEc:gam:jlands:v:13:y:2024:i:8:p:1185-:d:1447706
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    References listed on IDEAS

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    1. Carlos M. Duarte & Iñigo J. Losada & Iris E. Hendriks & Inés Mazarrasa & Núria Marbà, 2013. "The role of coastal plant communities for climate change mitigation and adaptation," Nature Climate Change, Nature, vol. 3(11), pages 961-968, November.
    2. Michalis I. Vousdoukas & Roshanka Ranasinghe & Lorenzo Mentaschi & Theocharis A. Plomaritis & Panagiotis Athanasiou & Arjen Luijendijk & Luc Feyen, 2020. "Sandy coastlines under threat of erosion," Nature Climate Change, Nature, vol. 10(3), pages 260-263, March.
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