Qualitative Characterization of Aquatic Environments Using Diatom Life-Form Strategies

Kuhn, David L.; Plafkin, James L.; join(, John Cairns; Lowe, Rex L.

doi:10.2307/3225800

Cited by 38 publications

(21 citation statements)

References 28 publications

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“…A. minutissima is a common and frequently dominant member of the periphyton in a wide variety of situations (Allanson 1973, Brown and Austin 1973, Kuhn et al 1981, and was inferred by Williams et al (1973) sponses is shown in Fig. 4, modified from Smith's (1982) description of N:P requirements of phytoplankton.…”

Section: Algal Response To N Additionmentioning

confidence: 98%

“…ton, algal periphyton growth may also be used to assess the form of nutrient limitation, as shown by Wuhrmann and Eichenberger (1974), Stockner and Shortreed (1978), Marcus (1980), Krewer and Holm (1982) and Peterson et al (1983) for streams, and Sladeckova (1979) for lakes. Periphyton, because they are attached, are especially useful as biological indicators of point sources of nutrients in lakes (Kuhn et al 1981). Localized supplies of particular ions from natural springs, influent streams, or sewage outfalls, for example, may have little impact upon the water chemistry or phytoplankton of a lake, but may cause identifiable changes in periphyton attached to nearby substrates (Stevenson and Stoermer 1982).…”

Section: Introductionmentioning

confidence: 99%

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Algal Periphyton Growth on Nutrient‐Diffusing Substrates: An in situ Bioassay

Fairchild¹,

Lowe²,

Richardson³

1985

Ecology

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Abstract. Differences in nutrient limitation for dominant species within an algal periphyton com? munity were determined using additions of N and P supplied by nutrient-diffusing artificial substrates. Sealed clay flowerpots were filled with 2% agar and one of nine nutrient treatments (all combinations of K2HP04 at 0.0, 0.05, and 0.5 mol/L with NaN03 at 0.0, 0.05, and 0.5 mol/L). The pots were submerged at 0.5 m depth in Douglas Lake, Michigan, and diffused N and P to their outer surfaces in proportion to internal concentrations. After 51 d the pots were scraped and analyzed for attached algae. Ecological Society of AmericaTotal algal biomass as chlorophyll a on the pots ranged from 0.17 ? 0.02 (se) ^g/cm2 for pots without added nutrients to 15.7 + 2.0 /xg/cm2 for pots with K2 HP04 at 0.05 mol/L and NaN03 at 0.5 mol/L. Chlorophyll a on pots containing just P (0.05, 0.5 mol/L) increased 6-to 10-fold over controls. The diatoms Epithemia adnata and Rhopalodia gibba and the blue-green alga Anabaena in? creased significantly on the P-only pots; these species are suspected of N-fixing capability. Chlorophyll a on pots containing just N (0.05, 0.5 mol/L) increased 1.5-to 2-fold, though this increase was nonsignificant; Achnanthes minutissima, Gomphonema tenellum, and Cocconeis placentula showed enhanced growth on these pots.Combinations of N and P caused heavy growths of the filamentous alga Stigeoclonium tenue. Naviculoid diatoms were also most abundant on the N + P pots.Average nutrient levels in Douglas Lake during the study were: NH3, 2.02 /nmol/L; N03, 0.44 Aimol/L; and P04, 0.06 /miol/L. The low ambient concentrations of both N and P, together with results ofthe periphyton bioassay, indicate that the two nutrients may jointly limit overall growth, and that the form of growth limitation differs by species within the periphyton community.

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Section: Algal Response To N Additionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Algal Periphyton Growth on Nutrient‐Diffusing Substrates: An in situ Bioassay

Fairchild¹,

Lowe²,

Richardson³

1985

Ecology

Self Cite

270

208

View full text Add to dashboard Cite

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“…The community succession rate was measured by average dissimilarity between successive sampling days ( Kuhn et al 1981). The Shannon-Wiener index of diversity was calculated using a logarithm in base 2 transformation (Shannon and Weaver 1963).…”

Section: Methodsmentioning

confidence: 99%

A Comparative Study of Benthic Algal Colonization in Shallow Lakes of China

Pei¹,

Liu²,

Hu³

2010

Journal of Freshwater Ecology

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The colonization characteristics of benthic microalgae communities on artificial substrata were analyzed in four shallow lakes of different trophic status. Colonizations in lower nutrient lakes with macrophytes (Niuchao Lake and Langzi Lake) had longer lag phases, lower peak biomasses, and had longer times to community maturity than the higher nutrient lakes without macrophytes (Nanhu Lake and Donghu Lake). Hypereutrophic Nanhu Lake was dominated by filamentous green algae Oedogonium spp. and the diatom Gomphonema parvulum. The diatoms Melosira varians and Synedra spp. dominated the community in eutrophic Donghu Lake. Achnanthes minutissima was dominant in most colonization periods, and some filamentous green algae appeared with prolonged colonization time in the lower nutrient lakes. Succession rates were higher at sites with higher nutrient concentrations.

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“…For analysis of the diatom growth-forms, including slowly moving, moving, and stalked diatoms, particular species in the examined material were selected according Kuhn et al (1981).…”

Section: Methodsmentioning

confidence: 99%

The epiphytic communities of various ecological types of aquatic vegetation of five pastoral ponds

2009

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Five small water bodies located within the agricultural region of Wielkopolska (west Poland) underwent investigation. Periphyton samples were collected from various macrophyte habitats representing rush vegetation (in five water bodies), submerged aquatic plants (in three) and nymphaeids (in one): Palędzie -Ceratophyllum demersum, Potamogeton crispus, Typha latifolia; Batorowo -Phragmites australis; Piotrowo -Potamogeton natans, Ceratophyllum submersum, Typha latifolia; Tarnowo Podgórne -Typha latifolia; Dąbrówka -Zannichellia palustris, Potamogeton pectinatus, Phragmites australis.The main goal of the study was to determine the composition and abundance of the periphytic communities inhabiting various types of rush and water vegetation of five water bodies located within a mid-field landscape area. Diatoms such as Achnanthidium minutissimum, Amphora ovalis, Cocconeis placentula orNavicula cincta revealed significantly higher densities in the zone of elodeids, while green algae prevailed among nymphaeids. As a result of this study it was found that the epiphytic algae were characterised by much lower diversity in respect to a specific water body, though much greater diversity was observed in its relation to the type of substratum. Two types of habitats were distinguishedthe first of simple build (helophytes and nympheids) and the second containing the complicated architecture of plant stems (elodeids).

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Qualitative Characterization of Aquatic Environments Using Diatom Life-Form Strategies

Cited by 38 publications

References 28 publications

Algal Periphyton Growth on Nutrient‐Diffusing Substrates: An in situ Bioassay

Algal Periphyton Growth on Nutrient‐Diffusing Substrates: An in situ Bioassay

A Comparative Study of Benthic Algal Colonization in Shallow Lakes of China

The epiphytic communities of various ecological types of aquatic vegetation of five pastoral ponds

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