Photosynthetic rates of benthic marine algae in relation to light intensity and seasonal variations

King, Robert; Schramm, W.

doi:10.1007/bf00387606

Cited by 179 publications

(100 citation statements)

References 3 publications

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“…m-2 sec-I of photosynthetically active radiation. This was within the range of light saturation values documented for other macroalgal species (King and Schramm 1976;Arnold and Murray 1980;Lapointe et al 1984). Net productivity was measured to 0.1 parts per million of dissolved oxygen by means of a YSI Model 57 oxygen analyzer and calculated as rnilligrams carbon fixed per unit of thallus weight per hour assuming a photosynthetic quotient of 1.00.…”

Section: Productivitymentioning

confidence: 54%

Dominant macrophyte standing stocks, productivity and community structure on a Belizean barrier-reef

Littler¹,

Taylor²,

Littler³

et al. 1987

Atoll Research Bulletin

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Section: Productivitymentioning

confidence: 54%

Dominant macrophyte standing stocks, productivity and community structure on a Belizean barrier-reef

Littler¹,

Taylor²,

Littler³

et al. 1987

Atoll Research Bulletin

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“…In our study, the intertidal area of Fisherman's Wharf (800 m×365 m) was larger than that at Yangma Island (80 m×30 m), and light intensity may thus be lower at the former owing to water depth differences. This could explain the higher richness and biomass red algae in Yangma Island and higher biomass of green algae at Fisherman's Wharf (Table 5; Fig.6), as red and green algae have differing optimal light conditions (King and Schramm, 1976). Although macroalgae are able to tolerate low light conditions (Hellebust, 1970), some red algae have shown lower photosynthetic ability at lower light intensities (King and Schramm, 1976).…”

Section: Discussionmentioning

confidence: 99%

“…This could explain the higher richness and biomass red algae in Yangma Island and higher biomass of green algae at Fisherman's Wharf (Table 5; Fig.6), as red and green algae have differing optimal light conditions (King and Schramm, 1976). Although macroalgae are able to tolerate low light conditions (Hellebust, 1970), some red algae have shown lower photosynthetic ability at lower light intensities (King and Schramm, 1976). For example, the relative growth rate of Gracilaria lemaneiformis , a red algae species, increased with increasing daily light density received (Xu and Gao, 2008).…”

Section: Discussionmentioning

confidence: 99%

Temporal and spatial variations in the distribution of macroalgal communities along the Yantai coast, China

Han

Liu

2014

Chin. J. Ocean. Limnol.

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To explore the impact of environmental variables on macroalgal communities, their temporal and spatial distributions were examined along the Yantai coast, China between April 2010 and March 2011. Macroalgae sampling was conducted monthly at four sites along the coast: Jiahe River estuary, Zhifu Island, Fisherman's Wharf, and Yangma Island. The species composition and abundance, and their relationship with environmental variables were assessed. Along the Yantai coast, 35 macroalgae species were identifi ed, including 24 Rhodophyta spp., 7 Chlorophyta, and 4 Phaeophyta spp. Highest species numbers were recorded in the summer at all sampling sites, except in the Jiahe River estuary. Macroalgae biomass was the greatest in the summer. Year-round, the highest species number and dry biomass recorded at Fisherman's Wharf and Yangma Island was attributed to the substrate type. In summer, Ulva pertusa Kjellman was the dominant species identifi ed along the Yantai coast, which indicates a risk of macroalgae blooms. Our results show that seawater temperature and nutrients appear to signifi cantly affect the temporal and spatial patterns of macroalgal abundance along the Yantai coast. The effects of environmental variables on the macroalgae on the Yantai coast need further study.

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“…In warm temperate/temperate regions such as Sydney, however, it is related mainly to seasonally fluctuating daylengths and, to a minor extent, to changing light intensities and temperatures during the course of the year. The influence of a seasonally fluctuating light factor on macroalgal photosynthesis (King and Schramm, 1976;Gutkowski andMaleszewski, 1989), development (Wiencke, 1990), and the concentration of the sulphonium compound P-dimethylsulphoniopropionate (Karsten et al, 1990), which acts as an organic osmolyte (Karsten et al, 1991), is well documented: LD conditions, for example, lead to a strong accumulation of 0-dimethylsulphoniopropionate in cells of green macroalgae.…”

Section: Dlscusslonmentioning

confidence: 99%

Floridoside, L-Isofloridoside, and D-Isofloridoside in the Red Alga Porphyra columbina (Seasonal and Osmotic Effects)

1993

Self Cite

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The quantitative heteroside distribution in Porphyra columbina Montagne and Bangia atropurpurea (Roth) C. Agardh (Bangiales, Rhodophyta) has been measured using '3C-nuclear magnetic resonance spectroscopy and gas-liquid chromatography. In P. columbina, floridoside and both D-and i-isofloridoside were recorded, with concentrations of i-isofloridoside exceeding those of floridoside. All three compounds were also measured in 6. atropurpurea. It was suggested that these striking differences might result from ecological and seasonal factors, or be attributed to taxonomic confusion in the genus Porphyra (Peat and Rees, 1961). Recently, the chemical structures and configurations of a11 heterosides from Porphyra perforata were investigated using both NMR and GLC-MS, and the occurrence of floridoside along with both D-and L-isofloridoside was verified (Meng et al., 1987). Although these authors did not publish any quantitative data on the heterosides, they mentioned that U.K. was supported by a generous fellowship from the Deutsche the ratio of the D and L forms of isofloridoside in one population of P. perforata changed over time: in winter (November), the ratio of D to L form was 1:l; whereas in samples collected in early summer (May), the ratio was 0.01:l. In a recent publication, Meng and Srivastava (1993) reported on diurna1 and seasonal variations in floridoside concentration in P. perforata from Canada. These authors demonstrated a steady increase in floridoside content from February to May, and also noted some indefinite changes in isofloridoside level, but without any differentiation between the D and L forms. The biological function of the heterosides as organic compounds involved in osmotic acclimation has been investigated (Kauss, 1967a(Kauss, , 1967b Reed et al., 1980; Wiencke andLauchli, 1981; Reed, 1985), but in these studies the D and L forms of isofloridoside were not distinguished, and sometimes even floridoside and isofloridoside were not separately measured. ''C-Incorporation studies on P. umbilicalis demonstrate that floridoside is the major photoassimilated compound, and that isofloridoside is very slow in labeling (Craigie et al., 1968). Studies of salinity effects on the concentration of heterosides in Bangiales show that only floridoside plays an important role in the osmotic acclimation. The content of floridoside increases linearly with increasing salt treatment, whereas the amount of isofloridoside (no differentiation between D and L form) remained almost unchanged (Reed et al., 1980; Reed, 1985). It was concluded that within the Bangiales, floridoside is metabolically much more active than isofloridoside.In the present study of a population of Porphyra columbina Montagne from Sydney, Australia, the amounts of floridoside and the D and L form of isofloridoside were quantitatively measured throughout the main growing season by 13C-NMR and GLC techniques. The distribution pattern of these compounds was also determined for severa1 geographically isolated summer populations of P. columbina and ...

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Photosynthetic rates of benthic marine algae in relation to light intensity and seasonal variations

Cited by 179 publications

References 3 publications

Dominant macrophyte standing stocks, productivity and community structure on a Belizean barrier-reef

Dominant macrophyte standing stocks, productivity and community structure on a Belizean barrier-reef

Temporal and spatial variations in the distribution of macroalgal communities along the Yantai coast, China

Floridoside, L-Isofloridoside, and D-Isofloridoside in the Red Alga Porphyra columbina (Seasonal and Osmotic Effects)

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