Pregled bibliografske jedinice broj: 401268
Habitat structure and predation mode predict community assemblages in the shallow benthos of an Adriatic lagoon
Habitat structure and predation mode predict community assemblages in the shallow benthos of an Adriatic lagoon // Book of Abstracts of ASLO Aquatic Sciences Meeting 2009
Nica: ASLO, Advancing the Science of Limnology and Oceanography, 2009. str. 240-240 (predavanje, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 401268 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Habitat structure and predation mode predict community assemblages in the shallow benthos of an Adriatic lagoon
Autori
Schultz, Stewart ; Kruschel, Claudia
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of Abstracts of ASLO Aquatic Sciences Meeting 2009
/ - Nica : ASLO, Advancing the Science of Limnology and Oceanography, 2009, 240-240
Skup
ASLO Aquatic Sciences Meeting 2009
Mjesto i datum
Nica, Francuska, 25.01.2009. - 30.01.2009
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
top-down control; demersal macrofauna; abundance and diversity
Sažetak
Top-down theories of community organization predict that mobile demersal macrofauna reach maximum abundance and diversity in structurally complex habitat, such as seagrass, which obstructs the vision and movement of predators. This prediction, however, oversimplifies by assuming a fixed predation mode and stable densities of predators and prey. If predators are mobile and can exploit structured habitat as ambush cover, then they can exclude most other macrofauna from structured patches. We assayed predator behavior and predation efficiency in fish communities in seagrass and neighboring bare sediment patches in experimental tanks and in nature in the Novigrad Sea, Croatia. We found (1) large ambush predators predominated in seagrass, and smaller chase-attack predators on bare sediment ; (2) overall fish abundance was fourfold higher on bare sediment than in seagrass ; (3) rates of biting, ingestion, and attacking were greatest in seagrass ; and (4) ambush predators were more successful and aggressive than chase-attack predators. Our results are consistent with the conclusion that seagrass has a higher predation risk due to large, aggressive ambush predators, which have forced most small/juvenile fish out of seagrass and onto neighboring bare sediments.
Izvorni jezik
Engleski
Znanstvena područja
Biologija
POVEZANOST RADA
Projekti:
269-0000000-3174 - EKOLOGIJA I PRAĆENJE STANJA BENTOSKIH ŽIVOTNIH ZAJEDNICA HRVATSKOGA JADRANA
269-0362975-3174 - EKOLOGIJA I PRAĆENJE STANJA BENTOSKIH ŽIVOTNIH ZAJEDNICA HRVATSKOGA JADRANA (Schultz, Stewart, MZOS ) ( CroRIS)
Ustanove:
Sveučilište u Zadru
Profili:
Stewart Schultz
(autor)