Naslov
LURE-ASSISTED VISUAL CENSUS DOCUMENTS THE EFFECTS OF BOTH HARVEST PROTECTION AND HABITAT ON FISH COMMUNITIES IN MARINE PROTECTED AREAS IN THE EASTERN ADRIATIC SEA

Autori
SCHULTZ, Stewart Tyre ; Dubravko PEJDO, Dubravko ; KRUSCHEL1, Claudia

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
52nd Europeans Marine Biology Symposium, Book of Abstracts / Ramšak, Andreja ; Francé, Janja ; Orlando - Bonaca, Martina ; Turk, Valentina ; Flander-Putrle, Vesna ; Mozetič, Patricija ; Lipej, Lovrenc ; Tinta, Tinkara ; Trkov, Domen ; Turk-Dermastia, Tomotej ; Malej, Alenka - Piran : National Institute of Biology, Marine Biology Station (NIB), 2017, 180-180

ISBN
978-961-93486-6-6

Skup
European Marine Biology Symposium

Mjesto i datum
Piran, Slovenija, 25.09.2017. - 29.09.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
Fish communities, Adriatic, marine protected areas, lure assisted visual census, statistical power, fisheries

Sažetak
Lure-assisted visual census, a fisheries-independent and non-destructive method for quantifying fish abundance and benthic habitat, was used to assess fish communities inside Croatian (eastern Adriatic Sea) marine protected areas, and outside these areas at similar locations. Marine protected areas included National Parks Brijuni, Kornati, Mljet, and Nature Park Lastovo. A total of 19678 visual transects were followed at 149 locations throughout the Croatian nearshore at depths from two to seven meters. Relative species abundances were compared within a generalized linear mixed model with MPA protection as a fixed effect and location as a random blocking effect, and species accumulation curves were constructed using Chao, jacknife, and bootstrapping methods. We found the total species richness was slightly higher inside all four MPAs than outside, but communities were highly significantly different inside versus outside all MPAs. The results indicate that organization of fish communities is highly sensitive to 1) regulation of fishing activities, and 2) degradation of bottom habitat, such that commercially valuable predatory species (including Diplodus sargus, D. puntazzo, Mullus surmuletus), and species dependent on intact and undisturbed macro-vegetation (Oblada melanura, Sarpa salpa) and rocky reef habitat (Epinephelus marginatus) are more abundant inside MPAs where habitat is less disturbed. Lure-assisted visual census is a powerful non-destructive method for quantifying the effects of fishing regulations on populations of common and commercially important fish species. This work was partially supported by the Croatian Science Foundation, under the project COREBIO (3107).

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA