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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 (CROSBI ID 655417)

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SCHULTZ, Stewart Tyre ; PEJDO, Dubravko ; KRUSCHEL, Claudia 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 // 52nd European Marine Biology Symposium, Book of Abstracts / Ramšak, Andreja ; Francé, Janja ; Orlando - Bonaca, Martina et al. (ur.). Piran: National Institute of Biology, Marine Biology Station (NIB), 2017. str. 180-180

Podaci o odgovornosti

SCHULTZ, Stewart Tyre ; PEJDO, Dubravko ; KRUSCHEL, Claudia

engleski

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

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).

lure asisted visual census, fish communities, marine protected areas, fisheries, habitats, statistical power, Adriatic

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Podaci o prilogu

180-180.

2017.

objavljeno

Podaci o matičnoj publikaciji

52nd European 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)

978-961-93486-6-6

Podaci o skupu

European Marine Biology Symposium

predavanje

25.09.2017-29.09.2017

Piran, Slovenija

Povezanost rada

Biologija