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Titolo:
Zooplankton dynamics in the hyper-eutrophic Nakdong River system (Korea) regulated by an estuary dam and side channels
Autore:
Kim, HW; Joo, GJ; Walz, N;
Indirizzi:
Inst Freshwater Ecol & Inland Fisheries, Dept Shallow Lakes & Lowland Rivers, D-12587 Berlin, Germany Inst Freshwater Ecol & Inland Fisheries Berlin Germany D-12587 , Germany Pusan Natl Univ, Dept Biol, Pusan 609735, South Korea Pusan Natl Univ Pusan South Korea 609735 Biol, Pusan 609735, South Korea
Titolo Testata:
INTERNATIONAL REVIEW OF HYDROBIOLOGY
fascicolo: 1, volume: 86, anno: 2001,
pagine: 127 - 143
SICI:
1434-2944(2001)86:1<127:ZDITHN>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUDSON RIVER; PLANKTON; COMMUNITY; ROTIFERS; DAPHNIA; POPULATIONS; COMPETITION; CLADOCERANS; ABUNDANCE; TRANSPORT;
Keywords:
rotifers; Nakdong River; flushing; advective effects; carbon transport;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, HW Inst Freshwater Ecol & Inland Fisheries, Dept Shallow Lakes & Lowland Rivers, Muggelseedamm 301, D-12587 Berlin, Germany Inst Freshwater Ecol& Inland Fisheries Muggelseedamm 301 Berlin Germany D-12587
Citazione:
H.W. Kim et al., "Zooplankton dynamics in the hyper-eutrophic Nakdong River system (Korea) regulated by an estuary dam and side channels", INT REV HYD, 86(1), 2001, pp. 127-143

Abstract

Zooplankton in the main channel of the Nakdong River and in three tributaries was sampled from June 1994 to September 1995. Planktonic rotifers (Brachionus spp.. Keratella spp.. and Polyarthra spp.). cyclopoid nauplii and small cladocerans (Bosmina longirostris) were numerically dominant. There wasconsiderable longitudinal variation of zooplankton biomass in the main channel as well as spatial heterogeneity among the major tributaries. In the middle region of the main channel, between river kilometer (RK) 170 and 150 above the estuary dam, total zooplankton abundance sharply increased from less than 100 ind. L-1 to more than 1,000 ind. L-1. In a downstream direction toward the estuary dam. phytoplankton biomass increased while total zooplankton biomass decreased. However, as shown by the increasing transport of zooplankton biomass, zooplankton was diluted in the reach of the estuary dam. Advective effects from major tributaries appear to be: the contributory factor for the higher zooplankton biomass in the middle region. Overall. rather the external factors (flushing, retention) than internal factors (e.g.. phytoplankton) appear to be responsible for changes in zooplankton abundance toward the river mouth.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 02:17:58