Coastal Zone Management in Croatia

This paper proposes a coastal erosion monitoring system for beach erosion management, which we demonstrate on natural and artificial pocket gravel beaches in Croatia. The approach uses low-cost Structure-from-Motion (SfM) photogrammetric imaging and multi-view stereo (MVS) to produce high-resolution 3D beach models for detecting morphological changes and erosion occurrence.Coastal state indicators, such as the shoreline position and subaerial beach volume, are derived from the 3D models and used to quantify changes between surveys. The method is illustrated through two case studies and, to our knowledge, these are the first repetitive measurements taken on the Croatian eastern Adriatic Coast (CEAC). In case of the natural Brseč beach, beach rotation was found to be a response to natural forcing from waves of various incident directions. For the artificial Dugi Rat beach, which loses sediment every winter and is subsequently re-nourished every spring, monitoring showed that beach nourishment is of limited durability. Both case studies showed that the SfM-MVS technique is suitable for the rapid and frequent acquisition of 3D survey data, from which quantitative coastal indicators can be derived to inform future coastal management interventions. Significantly, this low-cost data acquisition has a great potential for regular beach management survey. The introduction of beach monitoring in Croatia is timely because emerging Integrated CoastalZone Management (ICZM) practices will require data-based approaches. Moreover, rare natural pocket beaches and the ever-increasing number of artificial beaches are extremely vulnerable to natural and man-made changes. Adaptive beach management, based on systematic monitoring data, should be included in the ICZM, and we detail how SfM-MVS-based monitoring can be used at different levels of the ICZM. Implementing robust ICZM monitoring will require broad considerations and consultation with all stakeholders, so we propose that SfM-MVS beach surveys should be initially integrated into the existing monitoring practices for CEAC sea water bathing quality. Extension of the existing database with rapidly-gathered low-cost 3D beach survey data, from a number of targeted beaches, could be used to provide a crucial baseline for the ICZM and strategic coastal monitoring of the CEAC.

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Implementation Challenges for Marine Strategy Framework Directive in the Republic of Croatia

Luttenberger

Slišković

2020

JMTS

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The Marine Strategy Framework Directive adopted in 2008 aims to achieve Good Environmental Status (GES) of the EU’s marine waters by 2020 and to protect the resource base upon which marinerelated economic and social activities depend. To that end each Member State is required to develop its Marine Strategy, keep it up-to-date and have it reviewed every 6 years. The Republic of Croatia has by mid-2019 not adopted its national strategic document. The paper analyses the chronology, content of EU official country reports on marine environment, possible obstacles in adoption procedure and presents proposal for more efficient approach to protecting the Adriatic Sea. Marine spatial planning is also considered key instrument for managing the conflicts resulting from the increasing utilization and industrialization of the world’s seas and oceans. The process of national marine policy adoption should be made more clear and transparent to general public which is at the same time the public concerned, and to expert community. Strategic vision can only be built on knowledge, education and awareness of wider public.

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Coastal Zone Management in Croatia

Cited by 3 publications

References 6 publications

Integrating Coastal Zone Management into National Development Policies: The Case of Croatia

Integrating Coastal Zone Management into National Development Policies: The Case of Croatia

Implementing an efficient beach erosion monitoring system for coastal management in Croatia

Implementation Challenges for Marine Strategy Framework Directive in the Republic of Croatia

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