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The vertical distribution of zooplankton in brackish meromictic lake with deep-water chlorophyll maximum


, : The vertical distribution of zooplankton in brackish meromictic lake with deep-water chlorophyll maximum. Hydrobiologia 576: 69-82

We examined the dynamics of the vertical stratification of physical, chemical and biological factors in a brackish meromictic lake with a deep-water chlorophyll maximum (Shira Lake, Russia, Khakasia) during the growing season and estimated how the vertical distribution of these factors influences the vertical distribution of the zooplankton community. The vertical distribution of zooplankton was restricted by the anoxic hypolimnion. Nauplii and younger copepodides (C1-C3) of the copepod, Arctodiaptomus salinus, and the rotifer, Brachionus plicatilis, were found in the upper warm waters. During summer stratification the maximum of A. salinus biomass, which consisted mainly of older copepodides (C4-C5) and females, was associated with the deep-water maximum of biomass of green algae, which are the preferred diet for this species. The vertical distribution of the rotifer Hexarthra oxiuris was bimodal with numerical peaks in the epi- and hypolimnion. Reproduction peaks of dominant species were separated in time. The reproduction peak of A. salinus was at the beginning of summer when A. salinus constituted up to 99% of total zooplankton biomass. The development of rotifers was detected after the reproduction peak of A. salinus when the biomass of rotifers reached 50% of total zooplankton biomass.

US$19.90

DOI: 10.1007/s10750-006-0294-x


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Neal, D.; Asada, H.Harry., 2015: Engineered muscle systems having individually addressable distributed muscle actuators controlled by optical stimuli. A multi degree-of-freedom system using live skeletal muscles as actuators is presented. Millimeter-scale, optically excitable 3D skeletal muscle strips are created by culturing genetically coded precursory muscle cells that are activated with ligh...

Kempski, H.W., 1967: New developments in diagnosis and therapy of asthma of helminthic genesis. Der Landarzt 43(11): 523-525

Dorchies, P.; Ducos de Lahitte, J., 1985: A rational de-worming strategy - results of 2 years of observations. Grazing plots, each containing 2 mares and 2 foals (in 1983) and 3 mares and 2 foals (in 1984) were monitored for 22 consecutive months. Faeces and grass samples were examined for strongyles weekly and fortnightly respectively and 3 foals were aut...

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Lewis Paul H., 1972: Ultramafic inclusions from the Hopi Buttes volcanic field, Arizona and the island of Utila, Honduras. Abstracts with Programs - Geological Society of America 4(6): 387

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Dmitriev, V.D., 1954: Characteristics of compensation of motor functions in ontogenesis. Fiziologicheskii Zhurnal SSSR Imeni I. M. Sechenova 40(5): 582-588

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