Naslov
VARIATIONS IN Posidonia oceanica MEADOW STRUCTURE ALONG THE COAST OF THE NATIONAL PARK MLJET (EASTERN ADRIATIC SEA)

Autori
Kružić, Petar ; Pečar, Osvin

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

Izvornik
Zbornik sažetaka priopćenja 10. Hrvatskog biološkog kongresa / Besendorfer V., Kopjar, N., Vidaković-Cifrek, Ž., Tkalec, M., Bauer, M., Lukša, Ž. - Zagreb, 2009, 245-246

Skup
10. Hrvatski biološki kongres

Mjesto i datum
Osijek, Hrvatska, 14.09.2009. - 20.09.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Posidonia oceanica; Mljet National Park; Adriatic Sea

Sažetak
Although the Posidonia oceanica meadows in Mediterranean Sea have been studied over the last few decades, the data about the status of this endemic magnoliophyte are scarcer from the Adriatic Sea. Samples of P. oceanica meadows were collected in June, July and August 2006 using scuba diving at 12 sites in the area of the National Park Mljet, all at depths of 10 m. The meadow’ s shoot density was measured, and shoots were collected to be examined and compared through number of leaves per shoot, leaf surface per shoot, leaf area index, number and biomass of taxa of epiphytic flora. Significant differences in P. oceanica meadow structure were found among investigated sites, especially between site in the Mljet channel area and the other sites at the open sea. Meadow density decreased at sites in the Mljet channel and the main impact factors seem to be the input of organic matter, originating from sewage input. These negative human activities are source of nutrient pollution and stimulate blooms of phytoplankton and higher algae. The highest values of shoot density were recorded at investigated sites at the outer part of the Mljet Island. The shoot density was very low at sites situated near the touristic settlements and anchoring sites. Concerning the epiphytic macroflora, a total of 39 taxa of epiphytic macroalgae were identified and the class Rhodophyta dominated in all samples.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA