The autecology of<i>Peridinium cinctum</i>fa.<i>westii</i>from Lake Kinneret

Berman, T.; Dubinsky, Zvi

doi:10.1080/03680770.1983.11897788

Cited by 12 publications

(9 citation statements)

References 12 publications

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“…, 1995). These blooms collapsed after the onset of summer stratification, when temperatures, solar radiation and wind stress increased, while nutrients and CO 2 became limiting (Berman & Dubinsky, 1984; Berman‐Frank et al. , 1994).…”

Section: Methodsmentioning

confidence: 99%

Encystment of Peridinium gatunense: occurrence, favourable environmental conditions and its role in the dinoflagellate life cycle in a subtropical lake

2006

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1. The abundance of cysts of the bloom-forming dinoflagellate Peridinium gatunense in the sediments of Lake Kinneret and the effects of environmental conditions on encystment were studied in relation to bloom dynamics. Peak cyst formation coincided with the highest growth rate of the population, prior to bloom peak. 2. Peridinium cysts were counted in water and sediment corer samples from 2000 to 2003 and in archived sediment trap samples collected during 1993-94. The cyst data were examined in relation to ambient temperature and nutrient records, and revealed no direct correlation. 3. In laboratory encystment experiments with Peridinium cells collected from the lake, 0.2-3% of the vegetative cells encysted. Temperature, light and cell density had no significant effect on the percentage of encystment. 4. Cysts were always present in the lake sediments but their abundance in 'non Peridinium' years was much lower than after a massive bloom. Vegetative cells were always present in the water column after the collapse of the annual dinoflagellate bloom, potentially serving as the inoculum for the next bloom. We propose that the hardy cysts serve as an emergency 'gene bank' to initiate population build up following catastrophic die outs.

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Section: Methodsmentioning

confidence: 99%

Encystment of Peridinium gatunense: occurrence, favourable environmental conditions and its role in the dinoflagellate life cycle in a subtropical lake

2006

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“…7), as found by Berdalet et al (1996) and Estrada et al (1996) in a microcosm experiment in which nutrients were added in a single initial pulse. It has been speculated that the high P demand of dinoflagellates, due to their relatively high DNA content (Spector 1984, Berman & Dubinsky 1985, could explain their low contribution in P-deficient microcosms .…”

Section: Biovolume Distribution Of Major Phytoplankton Groupsmentioning

confidence: 99%

Effects of pulsed nutrient enrichment on enclosed phytoplankton: ecophysiological and successional responses

Estrada

Berdalet²,

Vila³

et al. 2003

Aquat. Microb. Ecol.

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“…The portion of total phytoplankton production attributed to P. gatunense was estimated by using a linear regression that related P. gotunense relative abundance and its relative production based on measurements by Pollingher and Bemxm (19X2). P. gatunense production was time integrated over the entire bloom season and converted from C to wet weight biomass assuming C is 20% of wet weight (Berman 1978).…”

Section: Inflowmentioning

confidence: 99%

Bloom dynamics and sedimentation of Peridinium gatunense in Lake Kinneret

Zohary

Pollingher

Hadas

et al. 1998

Limnology & Oceanography

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Temporal changes in the abundance of Peridinium gatunense Nygaard in the water column of warm monomictic Lake Kinneret were followed during [1990][1991][1992][1993][1994]. Sedimentation rates of this dinoflagellate were followed concurrently by means of sediment traps with and without a preservative (Formalin), positioned at the base of the epilimnion and within the hypolimnion, for exposure periods of 2-3 weeks. Upper trap catches of total P. gatunense (live cells + dead cells + thecae + protoplasts + cysts) were nearly always higher than lower trap catches, partly due to decomposition of the cells as they sank through the water column. Over the S-year period, total P. gatunense sedimentation rates ranged over 4 orders of magnitude, from values 3,000 : 19 : 1 (vs. 276 : 51 : 1 for protoplasts) indicated that microbial decomposition of thecae is likely to require N and P inputs from other sources. Ultimately, our study highlights for the first time that annual dinoflagellate sedimentation rates may vary dramatically as a result of other processes such as decomposition, resuspension, and grazing, leading to dramatic variations in the amount of organic matter reaching the bottom sediments.

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The autecology ofPeridinium cinctumfa.westiifrom Lake Kinneret

Cited by 12 publications

References 12 publications

Encystment of Peridinium gatunense: occurrence, favourable environmental conditions and its role in the dinoflagellate life cycle in a subtropical lake

Encystment of Peridinium gatunense: occurrence, favourable environmental conditions and its role in the dinoflagellate life cycle in a subtropical lake

Effects of pulsed nutrient enrichment on enclosed phytoplankton: ecophysiological and successional responses

Bloom dynamics and sedimentation of Peridinium gatunense in Lake Kinneret

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