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Open AccessArticle

Diversity and Distribution Patterns of Hard Bottom Polychaete Assemblages in the North Adriatic Sea (Mediterranean)

1
Interdepartmental Research Centre for Environmental Sciences, University of Bologna, Via Sant’Alberto 163, 48123 Ravenna, Italy
2
Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy
3
Center for Marine Research, Ruđer Bošković Institute, Giordano Paliaga 5, 52210 Rovinj, Croatia
4
Stazione Zoologica Anton Dohrn, Integrative Marine Ecology Department, Villa Comunale, 80121 Naples, Italy
*
Author to whom correspondence should be addressed.
Diversity 2020, 12(10), 408; https://doi.org/10.3390/d12100408
Received: 3 September 2020 / Revised: 11 October 2020 / Accepted: 19 October 2020 / Published: 21 October 2020
The knowledge on the hard bottom polychaete assemblages in the Northern Adriatic Sea, a Mediterranean region strongly affected by environmental pressures, is scarce and outdated. The objective of this paper was to update the information on polychaete diversity and depict their patterns of natural spatial variation, in relation to changes in algal coverage at increasing depth. Hard bottom benthos was quantitatively sampled by scraping off the substrate from three stations at Sveti Ivan Island (North Adriatic) at three depths (1.5 m, 5 m and 25 m). Polychaete fauna comprised 107 taxa (the majority of them identified at species level) belonging to 22 families, with the family Syllidae ranking first in terms of number of species, followed by Sabellidae, Nereididae, Eunicidae and Serpulidae. Considering the number of polychaete species and their identity, the present data differed considerably from previous studies carried out in the area. Two alien species, Lepidonotus tenuisetosus, which represented a new record for the Adriatic Sea, and Nereis persica, were recorded. The highest mean abundance, species diversity and internal structural similarity of polychaete assemblages were found at 5 m depth, characterised by complex and heterogeneous algal habitat. The DISTLM forward analysis revealed that the distribution of several algal taxa as well as some algal functional-morphological groups significantly explained the observed distribution patterns of abundance and diversity of polychaete assemblages. The diversity of the North Adriatic hard bottom polychaete fauna is largely underestimated and needs regular updating in order to detect and monitor changes of benthic communities in the area. View Full-Text
Keywords: Annelida; Polychaeta; benthos; community structure; algae Annelida; Polychaeta; benthos; community structure; algae
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MDPI and ACS Style

Mikac, B.; Licciano, M.; Jaklin, A.; Iveša, L.; Giangrande, A.; Musco, L. Diversity and Distribution Patterns of Hard Bottom Polychaete Assemblages in the North Adriatic Sea (Mediterranean). Diversity 2020, 12, 408. https://doi.org/10.3390/d12100408

AMA Style

Mikac B, Licciano M, Jaklin A, Iveša L, Giangrande A, Musco L. Diversity and Distribution Patterns of Hard Bottom Polychaete Assemblages in the North Adriatic Sea (Mediterranean). Diversity. 2020; 12(10):408. https://doi.org/10.3390/d12100408

Chicago/Turabian Style

Mikac, Barbara; Licciano, Margherita; Jaklin, Andrej; Iveša, Ljiljana; Giangrande, Adriana; Musco, Luigi. 2020. "Diversity and Distribution Patterns of Hard Bottom Polychaete Assemblages in the North Adriatic Sea (Mediterranean)" Diversity 12, no. 10: 408. https://doi.org/10.3390/d12100408

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