Fouling on bivalve larval collectors in Brijuni National Park
| Autor: | Kujundžić, Dajana |
|---|---|
| Přispěvatelé: | Bakran-Petricioli, Tatjana |
| Jazyk: | chorvatština |
| Rok vydání: | 2022 |
| Předmět: |
invazivna vrsta Anadara transversa
noble pen shell PRIRODNE ZNANOSTI. Biologija fouling diversity plemenita periska Limaria hians NATURAL SCIENCES. Biology invasive species Anadara transversa Pinna nobilis plemenita periska raznolikost obraštaja Limaria hians invazivna vrsta Anadara transversa raznolikost obraštaja Pinna nobilis |
| Popis: | U sklopu međunarodnog Horizon 2020 projekta Marine Ecosystem Restoration in Changing European Seas (MERCES) u području infralitoralne zone uvale Javorike unutar Nacionalnog parka Brijuni bili su od lipnja do listopada 2019. godine postavljeni sakupljači za mlađ školjkaša izrađeni od mrežastih plastičnih vreća. Sakupljači su bili postavljeni u triplikatu, na 6, 8 i 10 m dubine, ukupno devet sakupljača, a prvenstveno su bili namijenjeni hvatanju mlađi kritično ugrožene plemenite periske (Pinna nobilis Linnaeus, 1758). Cilj rada bio je utvrditi ukupnu kvalitativnu i kvantitativnu raznolikost organizama makro-obraštaja na sakupljačima nakon četiri i pol mjeseca u moru. U bogatoj i raznolikoj obraštajnoj zajednici (ukupno 3731 jedinke, prosječno po sakupljaču 414,6±102,9) zabilježeno je 36 svojti makrobentosa među kojima su dominirali školjkaši (17 vrsta, ukupno 2793 jedinke, 74,9% po brojnosti) te rakovi (11 svojti, ukupno 879 jedinki, 23,6% po brojnosti). Najbrojnija vrsta obraštaja bio je školjkaš Limaria hians s udjelom od 17,7% u brojnosti. Juvenilne plemenite periske sa 72 jedinke čine 1,9% udjela. Najmanja duljina ljušture plemenite periske bila je 0,4 cm, a najveća 6,3 cm. Naseljavanje ličinki plemenite periske u sakupljače ukazuje da je 2019. godine u okolišu bilo dovoljno adultnih jedinki koje su se uspješno mrijestile. U obraštaju je zabilježena invazivna vrsta školjkaša Anadara transversa s 10,8% po brojnosti (404 jedinke). This study was part of the international Horizon 2020 project Marine Ecosystem Restoration in Changing European Seas (MERCES). Collectors for juvenile bivalves made of mesh plastic bags were set up in the infralittoral zone of Javorike Bay, Brijuni National Park, from June to October 2019. Collectors were placed in triplicate, at 6, 8 and 10 m depth, nine collectors in total, and were primarily intended to catch juveniles of critically endangered noble pen shell (Pinna nobilis Linnaeus, 1758). The aim of this thesis was to determine the overall qualitative and quantitative diversity of macro-fouling organisms on collectors after being submerged four and a half months. In rich and diverse fouling community (3731 individuals in total, an average of 414.6 ± 102.9 per collector), 36 macrobenthos taxa were recorded, dominated by bivalves (17 species, 2793 individuals, 74.9% of total recruitment) and crustaceans (11 taxa, 879 individuals, 23.6% of total recruitment). The most numerous species of biofouling was the bivalve Limaria hians with 17.7% of total recruitment. Juvenile noble pen shell with 72 individuals make up 1.9% of total recruitment. The minimum length of the noble pen shell was 0.4 cm and the maximum 6.3 cm. Larval colonization of noble pen shell in collectors indicates that in 2019 were enough adult individuals in the environment that successfully spawned. An invasive bivalve species Anadara transversa was recorded in the biofouling with 10.8% of total recruitment (404 individuals). |
| Databáze: | OpenAIRE |
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