Eastern Adriatic Coast (EAC): Geomorphology and Coastal Vulnerability of a Karstic Coast

Pikelj, Kristina; Juračić, Mladen

doi:10.2112/jcoastres-d-12-00136.1

Cited by 80 publications

(70 citation statements)

References 30 publications

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“…1). The coast is low and rocky, built up of karstified carbonates and represents only 0.26% of the total length of the Adriatic coastline (Blake & Topalović, 1996;Pikelj & Juračić, 2013). In fact, the sea area of the country is represented by the small, semi-enclosed Neum Bay, located between mainland and the 7 km-long Klek Peninsula (Dupčić-Radić et al, 2013).…”

Section: Study Areamentioning

confidence: 99%

Taxonomic survey of benthic diatoms in Neum Bay, southeastern Adriatic

Hafner¹,

Jasprica

Car

2018

Nat Croat

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The objective of this work was to contribute to the knowledge of microphytobenthos in the Adriatic Sea, by studying for the first time the benthic diatom communities in Neum Bay in Bosnia and Herzegovina. For this purpose, the benthic diatoms naturally growing on stones and macroalgae were identified at one station in the small semi-enclosed oligotrophic Neum Bay during 2010 and 2011. A total of 24 samples were collected at two different depths, 0.5 m and 8 m, and analysed with light and scanning electron microscopy. Altogether, 425 pennate and 58 centric taxa (species and infraspecific taxa) belonging to 60 families and 115 genera were noted. Genera with the greatest number of taxa were: Mastogloia (46 taxa), Navicula (36), Diploneis (35), Nitzschia (34), Amphora (31), Cocconeis (27), Achnanthes (14), Halamphora (12), Lyrella (11), and Surirella and Licmophora (10 each). Amphora bigibba var. interrupta and Cocconeis scutellum were the most frequent taxa, being present in 87.5% of the samples. In total, 142 taxa were found only once (sporadic taxa). Although benthic diatom richness is high in the bay, taxa are apparently not distributed evenly temporally. Consistent quantitative and qualitative data are still needed for a better determination of the seasonal and spatial changes of the epilithic assemblages in the region. Cilj rada bio je doprinijeti poznavanju mikrofitobentosa u Jadranskom moru istražujući po prvi put bentoske dijatomejske zajednice u Neumskom zaljevu u Bosni i Hercegovini. Bentoske dijatomeje su određene na jednoj postaji u poluzatvorenom oligotrofnom Neumskom zaljevu 2010. i 2011. Sakupljeno je 24 uzoraka na dubinama 0,5 i 8 m, a analizirani su s pomoću svjetlosnog i skenirajućeg elektronskog mikroskopa. U uzorcima je utvrđeno 425 penatnih i 58 centričnih svojti (vrsta i nižih taksonomskih kategorija) dijatomeja unutar 60 porodica i 115 rodova. Najveći broj svojti nađen je unutar sljedećih rodova: Mastogloia (46 svojti), Navicula (36), Diploneis (35), Nitzschia (34), Amphora (31), Cocconeis (27), Achnanthes (14), Halamphora (12), Lyrella (11) te Surirella i Licmophora (svaki po 10 svojti). Najčešće svojte su Amphora bigibba var. interrupta i Cocconeis scutellum s 87,5% učestalosti u ukupnom broju uzoraka. Utvrđene su 142 sporadične svojte (utvrđene u samo jednom uzorku). Iako je broj svojti relativno visok, nije utvrđena pravilnost u njihovoj vremenskoj raspodjeli. Radi preciznijeg utvrđivanja sezonskih i prostornih promjena strukture epilitskih dijatomejskih zajednica, potrebni su detaljniji kvalitativni i kvantitativni podaci.Ključne riječi: Bacillariophyta, plitki oligotrofni zaljev, taksonomska istraživanja, bogatstvo svojti,

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Section: Study Areamentioning

confidence: 99%

Taxonomic survey of benthic diatoms in Neum Bay, southeastern Adriatic

Hafner¹,

Jasprica

Car

2018

Nat Croat

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“…A vast part of that karstified area was subsequently submerged by the last late Pleistocene-Holocene sea transgression, transforming originally subaerial karst features (karrens, dolines, karstic springs, etc.) into submarine ones, including numerous caves (Pikelj & Juračić, 2013). Presently, of more than 235 known submerged caves, more than half are completely marine (euhaline), whilst environmental conditions in others (mainly coastal caves) vary depending on depth, tide and seaward freshwater discharge (Surić et al, 2010).…”

Section: Study Area and Environmental Settingsmentioning

confidence: 99%

Biological response to geochemical and hydrological processes in a shallow submarine cave

Radolović

Bakran‐Petricioli

Petricioli³

et al. 2015

Medit. Mar. Sci.

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The Croatian coastal karst abounds in submerged caves that host a variety of environmental conditions depending on the geomorphology, depth and submarine groundwater discharge. One example is the Y-Cave, a shallow, mostly submerged, horizontal cave on Dugi Otok Island, on the eastern Adriatic coast. This study was aimed at examining the temporal and spatial variability of the marine cave environment, including temperature, salinity, light intensity, cave morphology and hydrodynamism, along with the dissolutional effect caused by the mixing of sea and freshwater. The general distribution of organisms in the Y-Cave was positively correlated to the light gradient and reduced water circulation, thus the highest species diversity and abundance were recorded in the front part of the cave. The phylum Porifera was the most dominant group, and the poriferan species diversity in the cave ranks among the ten highest in the Mediterranean. The middle part of the cave, although completely dark, hosts an abundant population of the gastropod Homalopoma sanguineum and clusters of the gregarious brachiopod Novocrania anomala, whose presence could be connected to tidal hydrodynamics. The absence/scarcity of sessile marine organisms and pronounced corrosion marks at shallow depths inside the cave suggest a freshwater impact in the upper layers of the water column. A year long experiment with carbonate tablets revealed three different, independent ongoing processes affected by the position in the cave: bioaccumulation, dissolution and mechanical erosion. The results of long-term temperature readings also revealed water column stratification within the cave, which was not disturbed by either tidal or wave action. The shallow, partly submerged and relatively small Y-Cave is characterised by a suite of complex environmental conditions, which, together with the resulting distribution of organisms, are unique to this cave.

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“…However, man-made structures built for the regulation of torrential flows, and afforestation in coastal catchments due to the abandonment of agriculture, interrupted natural sediment supply in the last few decades. Additionally, the sediment which is mainly derived from karstified carbonate rocks (PIKELJ & JURAČIĆ, 2013) is prone to wave abrasion. This also contributes to the reduction in the beach volumes.…”

Section: Introductionmentioning

confidence: 99%

Observations of shoreline changes on a pocket gravel beach: Baška beach, Croatia

Ružić¹,

Ilić²,

Benac³

et al. 2017

Edition 4, Split, Croatie

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Abstract:The Baška beach, one of the largest gravel beaches in Croatia was monitored over 3 years. This paper presents analysis of the shoreline position derived from these measurements. The shoreline position and the beach width were calculated from beach profile measurements. Overall changes in shoreline positions were quite small except in areas affected by fresh-water input (stream and urban runoff) and near a groyne. Several storm events were covered during the observation period. In most of these cases, the shoreline retreat was registered as expected. This would be followed by a rapid beach recovery and resulting shoreline advancement. After NE (Bura) storm wind event the shoreline advancement was registered. However, the close inspection of the beach profiles showed that this registered shoreline advancement was due to accumulation of sediment at the toe of the beach. This material was eroded at the upper beach. This finding and the lack of beach rotation indicate that the cross-shore sediment processes dominate during the energetic events.

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Eastern Adriatic Coast (EAC): Geomorphology and Coastal Vulnerability of a Karstic Coast

Cited by 80 publications

References 30 publications

Taxonomic survey of benthic diatoms in Neum Bay, southeastern Adriatic

Taxonomic survey of benthic diatoms in Neum Bay, southeastern Adriatic

Biological response to geochemical and hydrological processes in a shallow submarine cave

Observations of shoreline changes on a pocket gravel beach: Baška beach, Croatia

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