Use of Artificial Substrata to Estimate the Productivity of Periphyton1

Kevern, N. R.; Wilhm, Jerry; Dyne, George M. Van

doi:10.4319/lo.1966.11.4.0499

Cited by 62 publications

(23 citation statements)

References 2 publications

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“…Growth of periphytic bacteria and algae on mesocosm walls is typically rapid, reaching significant levels within 2 to 3 d (e.g. Kevern et al 1966, Kuiper 1981) and often dominating both biomass and productivity within relatively short (7 d) time periods (Chen 1998). Even for systems with periodic wall cleaning, rapidly growing periphyton can still alter metabolic processes in planktonic and benthic communities (Dudzik et al 1979, Chen 1998.…”

Section: Implications For Nutrient Cycling Experimentsmentioning

confidence: 99%

Nutrient uptake in experimental estuarine ecosystems:scaling and partitioning rates

Chen¹,

Petersen²,

Kemp³

2000

Mar. Ecol. Prog. Ser.

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Studies of nutrient cycling and enrichment in aquatic ecosystems are commonly conducted in enclosed experimental ecosystems. Although there is considerable information about how the dimensions of natural aquatic ecosystems influence nutrient cycling processes, little is known on how nutrient cycling studies might be affected by the physical scales of experimental enclosures. In the present study, replicate (n = 3) cylindrical containers of 5 dimensions with 3 volumes (0.1, 1.0, 10 m3), 3 depths (0.46, 1.0, 2.15 m), and 5 diameters (0.35, 0.52, 1.13, 2.44, 3.57 m) were established and subjected to pulsed additions of dissolved inorganic nutrients (DIN, Pod3-, Si) in summer and autumn experiments. Consistent with common experimental protocols, walls of these containers were not cleaned of periphytic growth during the 8 wk studies. Nutrient concentrations in experimental ecosystems were low prior to nutrient-pulse additions and exhibited exponential depletion following treatments. Overall, larger containers had lower net uptake rates and higher nutrient concentrations than did smaller tanks. Relative contributions of planktonic, benthic and wall periphytic communities to total nutrient uptake varied in relation to dimensions of experimental systems. In general, net uptake rates by planktonic communities were inversely related to water depth, with higher rates associated with increased mean Light-energy in shallower systems. Indirect estimates of benthic uptake rates, which were relatively low in all but the shallowest systems, tended also to be inversely related to depth and directly proportional to light levels at the sediment surface. In contrast, nutrient uptake by wall communities (per water volume) was inversely related to the radius of experimental containers. Differences in the 2 container dimensions, depth and radius, accounted for more than 90 % of the variance in both net nutrient uptake by the whole ecosystem and the molar ratio of DIN/POd3-concentrations in the water column. Similarly, differences in net nutrient uptake rates among experimental ecosystems of different dimensions could be explained by the relative partition-, ing of rates among planktonic, periphytic, and benthic habitats. These results demonstrated that the physical dimensions of experimental ecosystems can have profound effects on measured nutrient dynamics. We also suggest that many of these experimental observations may be relevant also to more genera1 scaling relations for nutrient cycling in natural aquatic ecosystems.

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Section: Implications For Nutrient Cycling Experimentsmentioning

confidence: 99%

Nutrient uptake in experimental estuarine ecosystems:scaling and partitioning rates

Chen¹,

Petersen²,

Kemp³

2000

Mar. Ecol. Prog. Ser.

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“…McIntire and Phinney 1965;Eichenberger 1975) and on artificial substrates exposed to field conditions (e.g. Newcombe 1950;Sladecek and Sladeckova 1964;Kevern et al 1966) and various phases of algal growth have been identified. Similar patterns of colonization and growth of periphyton seem to occur on surfaces of submersed macrophytes.…”

mentioning

confidence: 99%

Dynamics of epiphyton on eelgrass (Zostera marina L.) leaves: Relative roles of algal growth, herbivory, and substratum turnover1

Borum

1987

Limnology & Oceanography

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Biomass accumulation of epiphytic algae on eelgrass leaves with leaf age was measured during three periods in Roskilde Fjord, Denmark. Epiphyte biomass increased exponentially with leaf age during the first 10–14 d of colonization. On older leaves epiphyton gradually approached a phase with only small changes in biomass. Algal doubling times, calculated from biomass accrual, were between 3.6 and 4.6 d on young leaf segments and increased to more than 14 d on old leaves. When corrected for biomass losses due to invertebrate grazing, algal doubling time was only 5.8 d on old leaves in August 1983. In this period grazing accounted for the bulk of epiphyte biomass losses and was a more important factor than eelgrass leaf renewal in reducing epiphytic load. As a conservative estimate, the epiphyte community contributed 4–5 times more to total aboveground production in the eelgrass bed than was indicated by its biomass contribution.

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“…Sladecek and Sladeckova (1964) reviewed the different methods used for the analysis of production on artificial sub~ strate. The instantaneous biomass accumulation method (Kevern, et al 1966) provided a refinement of production estimates in that only the acceleration phase of periphyton growth is considered. Thus, estimates from.the instantaneous biomass accumulation method are higher.…”

Section: Chapter II Literature Reviewmentioning

confidence: 99%

Variation with Stream Order in Species Composition, Diversity, Biomass, and Chlorophyll of Periphyton in Otter Creek, Oklahoma

Seyfer¹,

Wilhm²

1977

The Southwestern Naturalist

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Use of Artificial Substrata to Estimate the Productivity of Periphyton1

Cited by 62 publications

References 2 publications

Nutrient uptake in experimental estuarine ecosystems:scaling and partitioning rates

Nutrient uptake in experimental estuarine ecosystems:scaling and partitioning rates

Dynamics of epiphyton on eelgrass (Zostera marina L.) leaves: Relative roles of algal growth, herbivory, and substratum turnover1

Variation with Stream Order in Species Composition, Diversity, Biomass, and Chlorophyll of Periphyton in Otter Creek, Oklahoma

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