Studies on the functional role of tintinnids in the Southern California Bight. III. Grazing impact of natural assemblages

Heinbokel, J. F.; Beers, John R.

doi:10.1007/bf00386854

Cited by 135 publications

(69 citation statements)

References 17 publications

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“…Our data indicate that indirect effects of D. thomasi on phytoplankton did occur (Tables 2 & 3), consistent with previous evidence demonstrating that ciliates can efficiently graze phytoplankton (Goulder 1972, Heinbokel & Beers 1979, nanoplanktonic chlorophytes (Beaver & Crisman 1990), and heterotrophic nanoflagellates (Weisse 1991, Sanders et al 1994). In our study, there was a strong negative relationship between ciliate dbundance and algal biomass (Fig.…”

Section: Discussionsupporting

confidence: 92%

Effects of a cyclopoid copepod (Diacyclops thomasi) on phytoplankton and the microbial food web

Dobberfuhl

Miller

Elser³

1997

Aquat. Microb. Ecol.

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A plankton community unconditioned by Diacyclops thomasi predation was incubated with and without D. thomasj for 10 d to test the hypothesis that a recent manipulation of the food web of Castle Lake. CA; USA, altered phytoplankton biomass and productivity via effects of cyclopoid predation on microconsumers. Microconsumer grazing rates on bacteria and phytoplankton, ciliate abundance, chlorophyll, phytoplankton biovolume, and bacterial abundance were quantified before and after incubation. D. thomasi significantly reduced ciliate abundances relative to controls lacking D. thomasi. D. thomasj treatments also had higher chlorophyll concentration, bacterial abundance and maximum growth capacity of phytoplankton relative to controls. These results are consistent with the hypothesis that increases in D. thomasi in Castle Lake following food web manipulation affected lirnnological processes by affecting microconsumer abundances with subsequent effects on algae and bacteria.

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Section: Discussionsupporting

confidence: 92%

Effects of a cyclopoid copepod (Diacyclops thomasi) on phytoplankton and the microbial food web

Dobberfuhl

Miller

Elser³

1997

Aquat. Microb. Ecol.

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“…The large losses due to sampling and handling suggest that estimates of oligotrich abundances in nature, and calculations of their trophic impact extrapolated from such estimates (e.g. Heinbokel & Beers 1979, Landry & Hassett 1982 must be viewed as conservative.…”

Section: Edta ( M )mentioning

confidence: 99%

Laboratory culture of marine planktonic oligotrichs (Ciliophora, Oligotrichida)

Gifford¹

1985

Mar. Ecol. Prog. Ser.

160

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Marine planktonic oligotrichs of the genera Strombidium and Strombidinopsis were collected from the Northwest Arm of Halifax Harbour, isolated, and maintained in monospecific batch culture for periods ranging from weeks to 10 mo. Successful laboratory culture was a function of appropriate phytoplankton food and the chemical composition of the oligotrich culture medium. Maximal reproductive rates, as doublings per day, were obtained when the oligotrichs were fed 2 dinoflagellate strains, Heterocapsa triquetra and Scrippsiella trochoidea, and when the organisms were grown in seawater medium containing 10-@ to 10-6 M Na,-EDTA and trace metals. Oligotrich cultures fed diatoms of the spinose genus Thalassiosira exhibited poor growth, regardless of the culture m e d~u m used. Losses of oligotrichs from field collections due to handling ranged from 20 to 6 0 % , depending on the methods of collection and concentration used.

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“…Ayrıca bazı herbivor siliyatlar için beslenmede seçiciliğin, av büyüklüğü ve yüzey özellikleri ile temel oluşturduğu rapor edilmiştir (Jonsson, 1986). Çeşitli çalışmalar bakteri (Hollibaugh ve ark., 1980), diyatome ve dinoflagellatlar (Heinbokel and Beers, 1979;Stoecker ve ark., 1981Stoecker ve ark., , 1983Stoecker ve ark., , 1984 ve diğer ufak protozooların, tintinnidlerin besinini oluşturduğunu göstermektedir. Hatta bu besinler arasında zararlı-zehirli aşırı üreme gösteren türler de (Alexandrium tamarense, Gymnodinium mikimotoi) bulunmaktadır (Watras ve ark., 1985;Nakamura ve ark., 1996) ve bunların toksitelerinden dolayı siliyat populasyonunda büyük kayıplara neden olduğu daha önceki çalışmalarda verilmiştir (Nielsen ve ark., 1990;Buskey and Hyatt, 1995).…”

Section: Introductionunclassified

Species Composition of Tintinnids in the Neritic Water of Izmir Bay (Aegean Sea, Turkey) and Seasonal Variations

Sabancı¹

2015

J Aquacult Eng Fish Res

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Studies on the functional role of tintinnids in the Southern California Bight. III. Grazing impact of natural assemblages

Cited by 135 publications

References 17 publications

Effects of a cyclopoid copepod (Diacyclops thomasi) on phytoplankton and the microbial food web

Effects of a cyclopoid copepod (Diacyclops thomasi) on phytoplankton and the microbial food web

Laboratory culture of marine planktonic oligotrichs (Ciliophora, Oligotrichida)

Species Composition of Tintinnids in the Neritic Water of Izmir Bay (Aegean Sea, Turkey) and Seasonal Variations

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