Biology of Cladophora in freshwaters

Whitton, Brian A.

doi:10.1016/0043-1354(70)90061-8

Cited by 226 publications

(148 citation statements)

References 25 publications

Supporting

Mentioning

126

Contrasting

Order By: Relevance

“…involving equilibration of HCO^" and CO, with removal of residual HCO., and unfixed CO^ (Surif & Raven, 1990) are aLso untested. Figure 2 also shows A values relati\e to ambient CO^, for marine species of rwo of the algal genera represented in the Dighty Burn, the nnarine Hildenbrandia rubra {Hildenhrandia rivularis in the Dighty Burn) and the marine Cladophora rupestris and Cladophora sericea {Cladnphora glomerata in the Dighty Burn), It will be seen that the A value is much lower for the marine species than for their (lotic) freshwater descendants (Whitton, 1970;Sheath, 19S4;Sheath, Kaczmarczyk & Cole, 1993). Cladophora sericea and Cladophora rupestris have a well-developed capacity to use HCO3" (Maberly.…”

Section: Interpretation Of the A Values Of The Organisms Measured In mentioning

confidence: 99%

Inorganic carbon acquisition by aquatic photolithoatrophs of the Dighty Burn, Angus, U.K.: uses and limitations of natural abundance measurements of carbon isotopes

et al. 1994

View full text Add to dashboard Cite

SUMMARYThe '^C/'^C ratio (expressed as ^''^C) ot" benthic photolithotrophs in the Dighty Water (= Burn) were measured for comparison with that of the potential inorganic carbon sources, CO^ and HCO^ , in the Burn. The Burn water contains an average of 657 mmol m^ CO^ with rf'''C of -147?i^, and 1600 mmol m"'HCO^ with ^"C of -4-0%a. ^^"C values of riparian vegetation were also measured as contrihutors, after respiration in the soil or the Bum, to the (J'^C of inorganic carhon in the Burn. The potential range of differences in '•''C/'^C between dissolved CO., and plant organic C is set by the intrinsic 'KV'^C discrimination (a value) in CO^ fixation by Rubisco. Main results and conclusions are as follows, (i) A literature survey suggests that there is no convincing evidence that the a, values (rate constant for '-CO^ fixation relative to that for '''CO, fixation by Uubisco in the ab.sence of COt ransport limitation) for the 'lower plants' in the Burn (diatoms, green and red aigae, mosses) are significantly difterent from the well-estabhshed a,, values for the flowering plant enzyme, (ii) In confirmation of earlier work, the semi-erect 'streamer' gametophytes of the red alga Lcmanea mamilhsa and the moss Fontmalis anfjpyretica have S^^C values which can only be interpreted in terms of diffusive CO^ entry with minimal limitation of photosynthesis by CO^ diffusion, (iii) The semi-erect green aiga Cladophora glomerata and the flowering plant Ravum-ulus penidllotus ssp. pseudofluilons {formt-Tly var. calcareus)-^Te both able to use HCO.,". Their (^'''C \alues indicate that, if the HCO., -use system does not (as is likelv) discriminate significantly between '^C and '^C, then a substantial fraction of the inorganic C made available lo Rubisco must return to the medium, carrying '^C-inorgamc C not fixed by Rubisco. (i\') Two sets nf rt'^'C data from different hydrodynamic regimes (distance from leading edge of a flat stone; dift"erent size of thalli) show thai the attainable differences »i situ m thickness of the diffusion houndary layer do not alter the fractional limitation of photosynthesis of Cladophora by external diffusion of inorganic C, considered with HCO^" use. (vi) The encrusting red alga Hildenhrondia rivutaris has a rS'^C value suggestive of CO, as the morganic C source, hut not entirely ruling out HCO, . Marine species of both HUdenbraridia and Cladophora hax e i^'''C values which, even when corrected for source inorganic C ^^"'C values, are 10?™ tnore positive than the freshwater species, (vii) Mats of pennate diatoms were shown by pH-drift to be able lo use HCO^"; the relatively high (i.e. not very negative) ^''C value of these mats could relate to a relatively 'non-leaky' HCO.," acquisition mechanism and/or to limitation by external diffusion (e.g. through the mat).

show abstract

Section: Interpretation Of the A Values Of The Organisms Measured In mentioning

confidence: 99%

Inorganic carbon acquisition by aquatic photolithoatrophs of the Dighty Burn, Angus, U.K.: uses and limitations of natural abundance measurements of carbon isotopes

et al. 1994

View full text Add to dashboard Cite

show abstract

“…glomerata is a filamentous alga commonly found on firm substrates in current-swept, alkaline waters (Whitton, 1970). A number of workers bave reported a mid-summer decline in biomass of tbe species (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effects of light and temperature on photosynthesis of the nuisance algaCladophora glomerata(L.) Kutz from Green Bay, Lake Michigan

Lester¹,

Adams²,

Farmer³

1988

New Phytologist

View full text Add to dashboard Cite

summary Seasonal measurements of light‐ and temperature‐dependence of photosynthesis of the nuisance alga Cladophora glomerata (L.) Kutz were determined under laboratory conditions with algal samples collected from lower Green Bay, Lake Michigan. Photosynthesis rates were determined using oxygen difference in water circulated around the speciments. Photosynthesis reached light saturation at about 790 μmol photons m−2 S−1 (PAR) and had a temperature optimum between 28 and 31°c; maximum rates were 25–50 mg O2 g dwt −1 h‐1. These parameters varied seasonally with water temperatures. There was no evidence for a decline in photosynthetic rate with increasing temperature over the ranges used in this study. It is concluded that, in this instance, such an effect is not responsible for the mid‐season decline of this species. Other effects, such as those of respiration, photorespiration and phenology may, therefore, be important.

show abstract

“…Generally the growths are attributed to periods of high light intensity, which may be due to leaf fall of the stream bank vegetation, or occur in the period between ice melt and the appearance of a full forest canopy (Blum 1956, Whitton 1970, Cummins 1974. Extensive periphyton growths may also be induced by deforestation (Likens et al 1970, Graynoth 1979 and increased nutrient supply (Allen 1959).…”

Section: Introductionmentioning

confidence: 99%

Effects of artificial shading on periphyton and invertebrates in a New Zealand stream

Towns

1981

New Zealand Journal of Marine and Freshwater Research

View full text Add to dashboard Cite

The association between abundance of invertebrates and presence of extensive periphyton cover in the Waitakere River (36° 28´S, 174° 31´E), northern New Zealand, was studied from October 1974 to June 1975. A black polythene canopy (44 m 2 ) was placed across the stream, and the quantity of algal material and numbers of invertebrates in shaded and unshaded areas was measured. The presence of the canopy and the associated absence of periphyton influenced the distribution of several invertebrate species; those more abundant beneath the canopy were Slavina appendiculata (Oligochaeta: Naididae), Austrosimulium australense (Diptera: Simuliidae), and Aoteapsyche colonica (Trichoptera: Hydropsychidae), whereas the chironomids Maoridiamesa harrisi (Diamesinae), Austrocladius sp. (Orthocladiinae), and Paratanytarsus agameta (Chironominae) and the trichopterans Hydrobiosis parumbripennis (Rhyacophilidae), Oxyethira albiceps (Hydroptilidae), and Pycnocentrodes spp. (Conoesucidae) were more abundant outside. Potamopyrgus antipodarum (Mollusca: Hydrobiidae) and Hydora nitida (Coleoptera: Elmidae), commonly recorded from algal mats in New Zealand, were equally abundant in shaded and unshaded areas. Differences in distribution between experimental and control sites may have been due to interference by periphyton with attachment sites (simuliids and hydropsychids) and feeding habits of the invertebrates (remaining species).

show abstract

Biology of Cladophora in freshwaters

Cited by 226 publications

References 25 publications

Inorganic carbon acquisition by aquatic photolithoatrophs of the Dighty Burn, Angus, U.K.: uses and limitations of natural abundance measurements of carbon isotopes

Inorganic carbon acquisition by aquatic photolithoatrophs of the Dighty Burn, Angus, U.K.: uses and limitations of natural abundance measurements of carbon isotopes

Effects of light and temperature on photosynthesis of the nuisance algaCladophora glomerata(L.) Kutz from Green Bay, Lake Michigan

Effects of artificial shading on periphyton and invertebrates in a New Zealand stream

Contact Info

Product

Resources

About