Naslov
Cystoseira scale-based biometric relationships

Autori
Orfanidis, Sotiris ; Iveša, Ljiljana ; Gounaris, Stefanos ; Tsioli, Soultana ; Devescovi, Massimo ; Papathanasiou, Vasilis

Izvornik
Botanica marina (0006-8055) 60 (2017), 3; 285-296

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
biomass ; brown algae ; cover (%) ; coverage (%) ; Mediterranean Sea

Sažetak
Scale-based biometric relationships of Cystoseira species were studied. All of the allometric relationships between size and biomass were significant (p < 0.001) and volume [estimated as the product of length (L) and circumference-squared (C2)] was a better predictor of both wet biomass (WB) and dry biomass (DB) than L. The allometric exponent of the relationship between L and DB for five Cystoseira species (0.238–0.297) was found to be close to the allometric exponent suggested to be universal for primary producers (0.25). The relationship between Cystoseira spp. coverage (% ; estimated in the laboratory for each species harvested within a reference quadrat in vertical projection) and WB was best expressed by a power function, while that between photographic cover (% ; estimated in the field) and WB was asymptotic at 100% cover. The relationships between cover (%) (CVr) and coverage (%) (CVe) with WB pooled from an independent dataset were polynomial with comparable values up to 120 g WB. ANCOVA showed species-specific (e.g. between biomass and size) and species-independent (e.g. between biomass and coverage/cover, between DB and WB, and between DB and organic matter) relationships, indicating that nondestructive sampling in the genus is feasible when species and parameter are taken into account.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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