Ascidians (Chordata: Tunicata) from circalittoral and upper-bathyal soft bottoms of the Iberian Mediterranean. Bottom trawling impact

Arroyo, Elisa; Urbano, E. González; García‐Ruíz, Cristina; Esteban, Antonio; Ramos‐Esplá, Alfonso A.

doi:10.3389/conf.fmars.2019.08.00075

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“…The diversity index of molluscans was highest at the shallowest and deepest bottom of the study area (Figure 5). The ascidians were responded to the same depth gradient in term of diversity index in the Balearic Sea (Arroyo et al, 2019). Soft bottom sponges had lower diversity in the southern (H' < 1) under influence of oligotrophic Levantine Sea than the northern Aegean Sea under influence of the eutropic Black Sea (H' > 2; Kefalas et al, 2003a, b).…”

Section: Dominant Taxonomic Characteristicsmentioning

confidence: 98%

Ecological Gradients of Epimegafaunal Distribution along The Sectors of Gulf of İzmir, Aegean Sea

Mutlu

2021

Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries

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During 2009During -2010 epifaunal materials were collected seasonally with a beam trawl from seven fixed stations in the infralittoral of Gulf of Izmir to study spatiotemporal distribution of megabenthic fauna and their ecology. A total 153 megafaunal species were identified belonging to nine phyla, comprised mostly of 54 molluscans, 43 chordates (mostly fish), 20 arthropods, and 18 echinoderms. Nine alien species were recorded. Four species (two fish species, one gastropod and one Asteroidea species) were constant species and 16 species were common species in the study area. Lesueurigobius friesii, Buglossidium luteum, Turritellinella tricarinata and Astropecten irregularis were the most frequently occurred, and Lesueurigobius friesii, Varicorbula gibba, Anomia ephippium, Turritellinella tricarinata and Dentalium sp were the most abundantly occurred species. Excluding the evenness index, faunistic characteristics tended to increase as a factor of depth. Seasonal density (abundance and biomass) was minimal in April and maximal in February, followed by November having 2-fold higher abundance than that inJuly. Faunal assemblages were correlated with regions of the gulf and habitat type. Buglossidium luteum overspread the entire gulf excluding the inner gulf. Varicorbula gibba and Fulvia fragilis, a pollution indicator predominated the inner gulf. Hydrographical parameters and depth were associated to dictate faunal assemblages with difference among the sectors and habitats.

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Section: Dominant Taxonomic Characteristicsmentioning

confidence: 98%

Ecological Gradients of Epimegafaunal Distribution along The Sectors of Gulf of İzmir, Aegean Sea

Mutlu

2021

Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries

View full text Add to dashboard Cite

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Ascidians (Chordata: Tunicata) from circalittoral and upper-bathyal soft bottoms of the Iberian Mediterranean. Bottom trawling impact

Cited by 1 publication

References 0 publications

Ecological Gradients of Epimegafaunal Distribution along The Sectors of Gulf of İzmir, Aegean Sea

Ecological Gradients of Epimegafaunal Distribution along The Sectors of Gulf of İzmir, Aegean Sea

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