A Spatial Analysis of Fish Farming in the Context of ICZM in the Bay of Izmir-Turkey

Yucel-Gier, Guzel; Arisoy, Yalçìn; Pazi, Idil

doi:10.1080/08920753.2010.498111

Cited by 8 publications

(10 citation statements)

References 13 publications

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“…In the EU, to bring these loose ends together, integrated coastal zone management e ICZM and maritime spatial planning e MSP are considered suitable instruments addressing the conflict between different uses of coastal zones, increasing demand for aquaculture products and environmental conservation, taking into account the heterogeneity of the coastal conditions (Kaiser and Stead, 2002;Primavera, 2006). A spatial analysis of conflicting claims of users in the Bay of Izmir (Yucel-Gier et al, 2010) backs the view that fish farming is often a minor claimant for marine space and that aquaculture developments should therefore be planned in the broader integrated framework of ICZM and MSP to become a recognised partner.…”

Section: Discussionmentioning

confidence: 99%

Is lack of space a limiting factor for the development of aquaculture in EU coastal areas?

Hofherr

Natale

Trujillo³

2015

Ocean & Coastal Management

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a b s t r a c tThis study examines the spatial occupancy of marine finfish aquaculture in the European Union (EU), identifies geographical clusters and administrative areas where cage aquaculture development is particularly significant and provides evidence on the interactions between aquaculture and the touristic use of the coastline.Despite the increasing demand for seafood in the EU, its aquaculture is not expanding at the same rate (FAO, 2014), and the low number of new licences issued in recent years is a clear sign of the difficulties of the sector to expand.In this study, Google Earth satellite images and GIS methods were used to map and analyse spatial properties of marine finfish aquaculture sites in the EU. The analysis covers ten member states (Cyprus, ) representing around 95% of EU marine finfish aquaculture production by volume, and Turkey.The results indicate that existing marine aquaculture sites occupy around 230 hectares (ha) in Greece, and 34 ha in UK, which represent respectively 28% and 44% of EU marine finfish production by volume. Considering these very low figures of occupied surface, it is difficult to imagine that the expansion of marine aquaculture in the EU would be constrained by a lack of space in absolute terms. Limitations to growth may be better explained by the competition for space which takes place at the local level with more established coastal economic activities. To examine in particular the interactions with the touristic use of the coastline, the analysis considered the distribution of hotels around the aquaculture sites and found that there is evidence of strong negative spatial interaction up to a distance of 3 km. These quantitative findings corroborate more qualitative considerations on the conflicts affecting the establishment of marine aquaculture in specific coastal regions in USA, Canada, Australia and New Zealand described in the literature. Another contribution from this study lies in the identification and mapping of geographical clusters and local administrative units where aquaculture production is particularly significant. Since socio-economic data for the individual aquaculture sites in the EU are not easily accessible, the mapping of EU aquaculture clusters is the prerequisite for further research to understand the local enabling conditions apart from bio-physical conditions which favoured the expansion of aquaculture in specific areas and not in others and identifying examples of best practices for the governance of the sector.

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Section: Discussionmentioning

confidence: 99%

Is lack of space a limiting factor for the development of aquaculture in EU coastal areas?

Hofherr

Natale

Trujillo³

2015

Ocean & Coastal Management

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“…Izmir Bay (38°32'09''N and 26°45'18''E) is one of the most significant basin concerning maritime processes and fisheries covering an area of 960 km 2 with a shoreline of 464 km (YUCEL-GIER et al, 2010). It is a hot-spot fishing area with 83.4 % of the bay allotted to fisheries (PAZI et al, 2010).…”

Section: Methodsmentioning

confidence: 99%

Length-weight and length-length relations for 21 fish species caught in Izmir Bay

Kara

Acarlı

Ilkyaz

et al. 2020

Acta Adriat. (Online)

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This study exhibits relationships between length-weight and length-length for 21 fish species caught in Izmir Bay. Coefficients a and b for the length-weight relationships (LWRs) and length-length relationships (LLRs) were calculated with W=aLb formulae and as equations of TL=a+bFL and TL=a+bSL respectively. Equations of length-length for converting standard length and fork length into total length and vice versa were proven linear. The involved relationships were significantly interrelated (R2>0.942). Values b in the LWRs varied from 2.21 to 3.96 (mean ± SE: 3.15 ± 0.08). The student’s t-test showed that 87.9% of values b were significantly different from 3.

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“…BTW, as part of Güllük Bay, is under threat due to fishing and aquaculture activities, agriculture runoff, domestic waste pollution, port activities and tourism, including a "Tourism City" project approved by the Ministry of Environment and Urbanization. Güllük Bay contributes about 70% of total Turkish aquaculture production, mainly for the production of seabass and seabream [12,13]. Those factors put the wetland under threat, as the impact will be far above the carrying capacity of the area, disrupting irreversibly the ecological balance [13].…”

Section: Introductionmentioning

confidence: 99%

Trophic Niches of Two Congeneric Pipefishes in the Aegean Sea (Bargilya Wetland, Turkey), Based on Stable Isotope Analyses

Gurkan,

Aragoneses,

Innal

et al. 2023

Preprint

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Pipefishes (Family Syngnathidae) are representative fishes in many European coastal areas asso-ciated with vegetal assemblages and other shallow habitats. The polyandrous pipefishes Syngnathus abaster and S. acus co-occur in Metruk Tuzla (Bargilya Wetland, Aegean Sea, Turkey), a protected but threatened wetland due to anthropogenic disturbances. Both species were sam-pled during the breeding season (April-2018 and June-2019) for the assessment of growth and trophic features revealed from stable isotope profiles (δ13C and δ15N) and gut content. Both species showed positive allometric growth, with similar length-weight relationships. The isotope approach indicated that both species occupy similar trophic niches, with mean δ13C and δ15N values of -17.0 ± 1.2 ‰ for δ13C and 13.2 ± 0.6 ‰ for δ15N in S. abaster, and -17.3 ± 1.2 ‰ for δ13C and 13.3 ± 0.7 ‰ for δ15N in S. acus. The niche area for all sex types (undifferentiated specimens, males and females) in S. acus was slightly broader than in S. abaster. The simulation analysis of the trophic position (TP) in both species agreed with the isotopic assessment (TP = 3.67 ± 0.61 in S. abaster and 3.46 ± 0.66 in S. acus). Despite the high trophic resemblance between S. abaster and S. acus, the gut content assessment revealed the large contribution of copepods (especially Calanipeda aquaedulcis) to the dietary regime in both pipefishes. However, while the diet in S. abaster seemed to be almost monospecific, cladocerans were also an important resource in S. acus. Hence, we suggest that potential inter-specific competition for dietary resources would be minimized likely due to the occupancy of different microhabitats, a hypothesis that needs to be confirmed by further research.

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A Spatial Analysis of Fish Farming in the Context of ICZM in the Bay of Izmir-Turkey

Cited by 8 publications

References 13 publications

Is lack of space a limiting factor for the development of aquaculture in EU coastal areas?

Is lack of space a limiting factor for the development of aquaculture in EU coastal areas?

Length-weight and length-length relations for 21 fish species caught in Izmir Bay

Trophic Niches of Two Congeneric Pipefishes in the Aegean Sea (Bargilya Wetland, Turkey), Based on Stable Isotope Analyses

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