The ‘shock period’: dynamics of phytoplankton during the spring–summer transition of a stratifying English lake

Talling, J. F.; Spencer, Herbert; Morison, H. R.

doi:10.1007/s10750-004-1462-5

Cited by 8 publications

(4 citation statements)

References 32 publications

(40 reference statements)

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“…With C. marssonii there was insensitivity of rate over the even wider range of 8–25 °C, that is suggestive in relation to the seasonally widespread occurrence often found in the genus (e.g. Talling, Spencer & Morison, 2004). Other studies have found that for algal growth rates the temperature‐insensitive range varies considerably between species (Seaburg & Parker, 1983) but is typically wider than the corresponding range for short‐term photosynthesis (Jitts et al.…”

Section: Discussionmentioning

confidence: 69%

Diversity in the influence of temperature on the growth rates of freshwater algae, and its ecological relevance

2004

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1. Growth rates of seven species of planktonic algae were determined in culture over a range of temperature from 2 to 35°C. Additional observations on growth and viability were made for 13 species in the temperature range 20-35°C. 2. There was a wide range of growth rates between species at their optimal temperatures, from 1.7 divisions day )1 (Asterionella formosa) to 0.3 divisions day )1 (Ceratium furcoides).3. There were considerable differences between species for growth at low and high temperature. Certain algae, including the diatom A. formosa and the flagellates Cryptomonas marssonii, Dinobryon divergens and Eudorina unicocca var. unicocca, had growth rates of 0.4 divisions day )1 or more at 5°C. The cyanophyte Tychonema (formerly Oscillatoria) bourrellyi, the xanthophyte Tribonema sp., the desmid Staurastrum cingulum and the large dinoflagellate C. furcoides grew poorly or not at all at this temperature. All 21 species tested could grow at 25°C, but many -including most of the diatoms, some cyanophytes, and all the flagellates -failed to grow persistently at 30°C. Only Aphanizomenon flos-aquae survived with moderate increase at 35°C, a lethal temperature for the other species. 4. The applicability was considered of proposed quantitative formulations of the ratetemperature relationship. Simple exponential relationships applied only to very limited lower ranges of temperature. The relationship proposed by Bȇlehrádek was a better fit over a wider temperature range, but still excluded rate-decline at high temperature. 5. The interspecific differences found are of potential significance for restrictions in natural distributions associated with season, altitude (especially above 500 m) and latitude.

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Section: Discussionmentioning

confidence: 69%

Diversity in the influence of temperature on the growth rates of freshwater algae, and its ecological relevance

2004

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“…Salmaso et al, 2003;Teubner et al, 2003;Talling et al, 2005). During this growth period, P. rubescens might not only benefit from sufficient light and nutrient availability for autotrophic growth but also from low light-stimulated uptake of organic compounds released to the metalimnion after the breakdown of the phytoplankton spring peak.…”

Section: Climate Impactmentioning

confidence: 99%

Deep living Planktothrix rubescens modulated by environmental constraints and climate forcing

Dokulil

Teubner

2012

Hydrobiologia

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The cyanoprokaryote Planktothrix rubescens has been studied for over four decades in an alpine lake, Mondsee, Austria. We hypothesise that impacts of climate change can be distinguished from other environmental constraints controlling its population dynamics. During thermal stratification, P. rubescens formed a deep chlorophyll maximum in the metalimnion. Seasonal and diurnal depth distributions indicated that Planktothrix lived well below the euphotic zone, at low light levels and moderate temperatures. Photosynthetic parameters indicated a shade adapted population. The eutrophication and rehabilitation periods of Mondsee were characterised by fluctuations controlled by phosphorus, with periods below the P-threshold associated with low biovolumes and relatively stable populations. Positive net changes of Planktothrix biovolume occurred during the springsummer transition and in autumn. During summer, the population usually declined to an annual minimum. The standardised residuals of annual biovolumes responded positively to the climate signal of the Winter North Atlantic Oscillation and the timing of the onset of stratification. An inverse relationship existed between off-set and persistence of stratification. P. rubescens only benefits from climate warming early in the year, during late spring overturn and early summer. Longer periods of summer stratification did not favour biovolume development.

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“…, Gervais , Talling et al. , deNoyelles et al. ), i.e., they peak under conditions of reduced light and temperature.…”

Section: Discussionmentioning

confidence: 98%

Temperature × light interaction and tolerance of high water temperature in the planktonic freshwater flagellates Cryptomonas (Cryptophyceae) and Dinobryon (Chrysophyceae)

Limberger

Weisse

2019

Journal of Phycology

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Using microcosm experiments, we investigated the interactive effects of temperature and light on specific growth rates of three species each of the phytoplanktonic genera Cryptomonas and Dinobryon . Several species of these genera play important roles in the food web of lakes and seem to be sensitive to high water temperature. We measured growth rates at three to four photon flux densities ranging from 10 to 240 μmol photon · m −2 · s −1 and at 4–5 temperatures ranging from 10°C to 28°C. The temperature × light interaction was generally strong, species specific, and also genus specific. Five of the six species studied tolerated 25°C when light availability was high; however, low light reduced tolerance of high temperatures. Growth rates of all six species were unaffected by temperature in the 10°C–15°C range at light levels ≤50 μmol photon · m −2 · s −1 . At high light, growth rates of Cryptomonas spp. increased with temperature until the temperature optimum was reached and then declined. The Dinobryon species were less sensitive than Cryptomonas spp. to photon flux densities of 40 μmol photon · m −2 · s −1 and 200 μmol photon · m −2 · s −1 over the entire temperature range but did not grow under a combination of very low light (10 μmol photon · m −2 · s −1 ) and high temperature (≥20°C). Among the three Cryptomonas species, cell volume declined with temperature and the maximum temperature tolerated was negatively related to cell size. Since Cryptomonas is important food for microzooplankton, these trends may affect the pelagic carbon flow if lake warming continues.

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The ‘shock period’: dynamics of phytoplankton during the spring–summer transition of a stratifying English lake

Cited by 8 publications

References 32 publications

Diversity in the influence of temperature on the growth rates of freshwater algae, and its ecological relevance

Diversity in the influence of temperature on the growth rates of freshwater algae, and its ecological relevance

Deep living Planktothrix rubescens modulated by environmental constraints and climate forcing

Temperature × light interaction and tolerance of high water temperature in the planktonic freshwater flagellates Cryptomonas (Cryptophyceae) and Dinobryon (Chrysophyceae)

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