Ecological Studies and Mathematical Modeling of Cladophora in Lake Huron: 3. The Dependence of Growth Rates on Internal Phosphorus Pool Size

Auer, Martin T.; Canale, Raymond P.

doi:10.1016/s0380-1330(82)71947-1

Cited by 107 publications

(49 citation statements)

References 13 publications

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“…The link between chlorophyll a and the extent of marble in each sub-catchment requires some explanation. As noted previously, the cellular nutrient data indicate that, in general, there is more than adequate background P (i.e., > 0.5% P: Auer & Canale 1982) to sustain growth during the year, implying that N is in relatively short supply. Thus, variable concentrations of N around the catchments are likely to result in proportionate changes in growth.…”

Section: Discussionsupporting

confidence: 63%

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Periphyton development in relation to macro‐scale (geology) and micro‐scale (velocity) limiters in two gravel‐bed rivers, New Zealand

Biggs

Gerbeaux

1993

New Zealand Journal of Marine and Freshwater Research

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Periphyton communities were sampled every 4 weeks for a year at five sites in the Motueka River and at one site in the adjacent Riwaka River, New Zealand. This was in an attempt to distinguish the relative importance of large-scale catchment variables (geology/land use) from small-scale local variables (velocity) in determining the development of periphyton in the rivers. Cellular nitrogen correlated positively with the proportion of the sub-catchments in marble (r = 0.938, P < 0.01). Growth appeared to be N-limited during the year, thus average chlorophyll biomass also correlated strongly with marble (r = 0.983, P < 0.001). However, the maximum low-flow chorophyll a level at each site was strongly and negatively correlated with water velocity (r = -0.981, P < 0.001). This indicated that the macro-scale factors of the catchment are probably more important in determining longer-term (> 1 year) average production, but the micro-scale factors are more important in determining short-term (monthly) temporal biomass dynamics. This supports current ecological theory on the spatial and temporal effects of primary versus secondary regulators of stream ecosystem dynamics. M92035

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Section: Discussionsupporting

confidence: 63%

“…Cellular nutrient concentrations give a reliable estimate of nutrient limitation in periphytic algae (Auer & Canale 1982;Bothwell 1985;Biggs unpubl. data) since they integrate variable supply concentrations and relate directly to growth processes such as the synthesis of proteins and carbohydrate storage compounds.…”

Section: Periphyton Distribution and Biomassmentioning

confidence: 99%

Periphyton development in relation to macro‐scale (geology) and micro‐scale (velocity) limiters in two gravel‐bed rivers, New Zealand

Biggs

Gerbeaux

1993

New Zealand Journal of Marine and Freshwater Research

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“…Field studies have shown that rates of Pmax in a freshwater microalga (Auer & Canale, 1982) and a freshwater macrophyte (Schmitt & Adams, 1981) are correlated with cellular levels of P i. If this correlation applies to macroalgae, then prior pulsing of N and Pi followed by subsequent determination of Pmax could be used as a diagnostic field assay to examine the degree of nutrient limitation to primary productivity in coastal environments .…”

Section: Discussionmentioning

confidence: 99%

Productivity and nutrient relationships in psammophytic versus epilithic forms of Bryopsidales (Chlorophyta): comparisons based on a short-term physiological assay

Littler

1990

Hydrobiologia

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Members of the green algal order Bryopsidales ( = Caulerpales) are important calcifying agents of tropical reefs and comprise two fundamentally different life-form groups : (1) epilithic species with limited attachment structures and (2) psammophytic forms that have extensive subterranean rhizoidal systems . Because the shallow-water habitats of the former have relatively low nitrogen (N) to phosphorus (P;) ratios compared to the pore waters of the sedimentary carbonate-rich substrata in which the latter are anchored, we hypothesized that epilithic forms should tend to be relatively more limited by N, while psammophytic species should tend to show P ; limitation . In partial support of the hypothesis, lightsaturated net photosynthesis (PmaX) in the epilithic forms, Halimeda opuntia, H. lacrimosa and H. copiosa, tended to be enhanced by N, while P i was inhibitory or had no effect . In contrast, the psammophytic forms, Udotea sp ., U. conglutinata, H. monile, H. tuna and H. simulans, tended to be stimulated more by P;, whereas N had little effect . The utility of a bioassay to assess macroalgal nutrient limitation, based on a physiological response (net PmaX) to short-term nutrient pulses, is demonstrated .

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“…The value of M Q , a reflection of the alga's P status based on stored P content, is quantified using the Droop function (Droop 1968;Auer and Canale 1982b;Tomlinson et al 2010):…”

Section: Stored P Influence On P Netmentioning

confidence: 99%

TheCladophoraresurgence in Lake Ontario: characterization and implications for management

Kuczynski

Auer

Brooks

et al. 2016

Can. J. Fish. Aquat. Sci.

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Nuisance growth of the alga Cladophora, reported from Lake Ontario since the 1930s, abated in the decades following implementation of phosphorus control measures in the 1970s. Our examination of beach fouling records and historical observations of algal biomass has confirmed literature reports that a resurgence in nuisance growth of Cladophora has occurred since invasion of Great Lakes waters by dreissenids. Our findings indicate that the growth rate of Cladophora (specific rate of net photosynthesis) has decreased by 44% since 1972 in response to phosphorus controls. However, improved transparency, a response to mussel activity, has increased the maximum depth colonizable by Cladophora by a factor of 5 over that same interval. The net result is a sixfold increase in production potential since the late 1980s (the Post-P Management II Period) and a threefold increase since the 1970s (the Pre-P Management Period). Although the Cladophora resurgence has been driven by dreissenid modification of the light environment, phosphorus management remains the only alternative for reversing and ameliorating nuisance conditions. Elucidation of the nature of the Cladophora resurgence will aid decision-makers in maintaining a focus on phosphorus management as the appropriate means of remediating nuisance growth of the alga.Résumé : La nuisible prolifération de Cladophora repérée sur le Lac Ontario au moins depuis les années 1930 a visiblement diminué après la mise en place de mesures de contrôle du phosphore à la fin des années 1970. Notre analyse des données historiques sur les plages souillées et sur la biomasse historique des algues a confirmé qu'il y a eu une résurgence de la nuisible prolifération de Cladophora sur la période qui a suivi l'invasion des Grands Lacs par les dreissenidés. Notre découverte indique que le taux net de photosynthèse en Cladophora a diminué de 44 % depuis 1972, en réponse aux réductions de concentration de phosphore. Pourtant, la meilleure transparence, une réponse aux activités des dreissenidés, a augmenté la profondeur maximum disponible pour la colonisation par Cladophora par un facteur de 5 durant le même intervalle. En résulte quasiment une augmentation de six fois du potentiel de croissance pendant les années 1980s (l'ère Post-P Management II) et une augmentation de trois fois depuis les années 1970s (l'ère Pre-P Management). Bien que cette augmentation ait été poussée par la modification de l'environnement de lumière par les dreissenidés, la gestion du phosphore demeure la seule alternative pour inverser et améliorer ces conditions nuisibles. L'élucidation de la nature de la résurgence de Cladophora aidera les décideurs en maintenant l'accent sur la gestion du phosphore comme le moyen approprié pour corriger la nuisible prolifération de cette algue.

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Ecological Studies and Mathematical Modeling of Cladophora in Lake Huron: 3. The Dependence of Growth Rates on Internal Phosphorus Pool Size

Cited by 107 publications

References 13 publications

Periphyton development in relation to macro‐scale (geology) and micro‐scale (velocity) limiters in two gravel‐bed rivers, New Zealand

Periphyton development in relation to macro‐scale (geology) and micro‐scale (velocity) limiters in two gravel‐bed rivers, New Zealand

Productivity and nutrient relationships in psammophytic versus epilithic forms of Bryopsidales (Chlorophyta): comparisons based on a short-term physiological assay

TheCladophoraresurgence in Lake Ontario: characterization and implications for management

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