Temperature effects on growth, colony development and carbon partitioning in three Phaeocystis species

Wang, Xiaodong; Tang, Kam W.; Wang, Yan; Smith, Walker O

doi:10.3354/ab00256

Cited by 43 publications

(23 citation statements)

References 60 publications

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“…While the colonial stage is always diploid, flagellates can be haploid or diploid (Peperzak & Gaebler-Schwarz, 2012). While traditionally nutrient supply and zooplanktonic grazing have been considered cues for colony formation, a recent culture study by Wang et al (2010) showed the colony size and the number of cells per colony decreased with increasing temperature in Phaeocystis antarctica Karsten 1905 and P. globosa Scherffel 1899, while Takabayashi et al (2006) found an increasing number of cells per chain at higher temperatures in the diatom Skeletonema costatum (Grevillle) Cleve 1873.…”

Section: Temperature Effects In Clonal Culturesmentioning

confidence: 99%

Do marine phytoplankton follow Bergmann's rule sensu lato?

et al. 2016

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Global warming has revitalized interest in the relationship between body size and temperature, proposed by Bergmann's rule 150 years ago, one of the oldest manifestations of a 'biogeography of traits'. We review biogeographic evidence, results from clonal cultures and recent micro-and mesocosm experiments with naturally mixed phytoplankton communities regarding the response of phytoplankton body size to temperature, either as a single factor or in combination with other factors such as grazing, nutrient limitation, and ocean acidification. Where possible, we also focus on the comparison between intraspecific size shifts and size shifts resulting from changes in species composition. Taken together, biogeographic evidence, community-level experiments and single-species experiments indicate that phytoplankton average cell sizes tend to become smaller in warmer waters, although temperature is not necessarily the proximate environmental factor driving size shifts. Indirect effects via nutrient supply and grazing are important and often dominate. In a substantial proportion of field studies, resource availability is seen as the only factor of relevance. Interspecific size effects are greater than intraspecific effects. Direct temperature effects tend to be exacerbated by indirect ones, if warming leads to intensified nutrient limitation or copepod grazing while ocean acidification tends to counteract the temperature effect on cell size in non-calcifying phytoplankton. We discuss the implications of the temperature-related size trends in a global-warming context, based on known functional traits associated with phytoplankton size. These are a higher affinity for nutrients of smaller cells, highest maximal growth rates of moderately small phytoplankton (ca. 10 2 μm 3 ), size-related sensitivities for different types of grazers, and impacts on sinking rates. For a phytoplankton community increasingly dominated by smaller algae we predict that: (i) a higher proportion of primary production will be respired within the microbial food web; (ii) a smaller share of primary production will be channeled to the classic phytoplankton -crustacean zooplankton -fish food chain, thus leading to decreased ecological efficiency from a fish-production point of view; (iii) a smaller share of primary production will be exported through sedimentation, thus leading to decreased efficiency of the biological carbon pump.

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Section: Temperature Effects In Clonal Culturesmentioning

confidence: 99%

Do marine phytoplankton follow Bergmann's rule sensu lato?

et al. 2016

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“…This indicated that in addition to the environmental temperature and the content of silicate itself, the content of iron in environment played an important role in controlling the silicate utilization by diatom cells in some degree. Temperature is undoubtedly considered to be the main factor affecting algae growth [53]. For diatom, temperature not only affects the growth and photosynthesis of algae cells, but also affects the synthesis and accumulation of chemical constituents in cells [12].…”

Section: Coupling Effects Of Silicate Iron and Other Various Abioticmentioning

confidence: 99%

Coupling Effects of Silicate, Iron and Other Various Abiotic Variables on Growth of Two Diatoms, Phaeodactylum Tricornutum and Thalassiosira Weissflogii and Their Silicon Utilization

Long¹,

Yu²,

Xie³

et al. 2017

IJMBR

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The effects of various Abiotic factors, including concentrations of silicate and iron, temperature, light intensity and salinity of media on two purebred red tide diatoms, Phaeodactylum tricornutum and Thalassiosira weissflogii were investigated through single and full factorial experiments. The single-factor experiments showed diatom . From full factorial experiments, the main factors affecting Phaeodactylum tricornutum were iron concentration, temperature, the coupling effect of temperature and light intensity, and the coupling effect of temperature and iron concentration. The main factors affecting Thalassiosira weissflogii were temperature, the coupling effect of temperature and iron concentration, and the coupling interaction of silicate and iron. Silicates, iron ions and the coupling effects of temperature and silicate are the main factors affecting the production of biosilicon in Phaeodactylum tricornutum; and temperature, iron and the coupling effect of silicate and iron ions were the main factors influencing biosilicon produced by Thalassiosira weissflogii.

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“…Solitary cell concentrations were measured using 1-ml Sedgwick-Rafter chambers. Colony concentration, colony size and cells per colony were measured in 24 multi-plates using a Nikon inverted microscope with a calibrated micro-ruler (Tang, 2003;Wang et al, 2010). Colonies were counted within 24 h of collection to limit colony disruption in the preserved state.…”

Section: Microscopy and Chlorophyll Determinationsmentioning

confidence: 99%

“…Prior to the experiments, solitary cells of the three strains of P. globosa were isolated by passing the culture through a 10-mm nylon sieve twice under gravity (Tang, 2003), and experiments were initiated with an initial solitary cell density of 10 4 cells ml À1 . Triplicate onelitre batch cultures of each strain were grown in f/2 medium with a salinity of 32 PSU, where NH þ 4 , NO 3 or urea were added as the nitrogen source with an initial N concentration of 8.82 Â 10 À4 M. All cultures were bubbled with filtered air to maintain a uniform distribution (Wang et al, 2010).…”

Section: Experimental Culturesmentioning

confidence: 99%

“…Aliquots of known volume were filtered through Whatman GF/F filters to obtain total chlorophyll a, and through 20 mm polycarbonate membranes (Poretics) to obtain the >20 mm fraction, which was assumed to be representative of colonial chlorophyll (Tang et al, 2008;Wang et al, 2010). All chlorophyll a samples were extracted in darkness at 0 C for 24 h in 7 ml of 90% acetone; fluorescence of extracted chlorophyll a was determined on a TD-700 fluorometer (Turner Designs) before and after acidification (Parsons et al, 1984).…”

Section: Microscopy and Chlorophyll Determinationsmentioning

confidence: 99%

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The role of nitrogen on the growth and colony development ofPhaeocystis globosa(Prymnesiophyceae)

Wang¹,

Wang²,

Smith³

2011

European Journal of Phycology

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The effects of nitrate, ammonium and urea on the growth and colony formation of three strains of Phaeocystis globosa were investigated. Although ammonium and urea supported growth, nitrate was the favoured nitrogen source for the growth of solitary cells for all three strains. Phaeocystis globosa CCMP 1528 and 629 formed colonies in all cultures where nitrate was the sole nitrogen source, but only a few colonies were observed in ammonium and urea treatments. Ammonium and urea were far less effective in supporting growth, biomass generation and colony formation in all three strains. Once colonies developed, colonial cells accounted for at least 15% of the total cells when grown with nitrate; colonial chlorophyll also contributed up to 60% to the total chlorophyll. The growth rates of colonial cells when using nitrate were greater than solitary cells. Changes in colony size, colonial cell abundance and total P. globosa abundance as affected by the nitrogen source may influence the carbon flux within the pelagic food web.

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Temperature effects on growth, colony development and carbon partitioning in three Phaeocystis species

Cited by 43 publications

References 60 publications

Do marine phytoplankton follow Bergmann's rule sensu lato?

Do marine phytoplankton follow Bergmann's rule sensu lato?

Coupling Effects of Silicate, Iron and Other Various Abiotic Variables on Growth of Two Diatoms, Phaeodactylum Tricornutum and Thalassiosira Weissflogii and Their Silicon Utilization

The role of nitrogen on the growth and colony development ofPhaeocystis globosa(Prymnesiophyceae)

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