Relationship Between Thermal Stability and Summer Oxygen Depletion in a Prairie Pothole Lake

Papst, Michael H.; Mathias, J. A.; Barica, J.

doi:10.1139/f80-183

Cited by 22 publications

(16 citation statements)

References 2 publications

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“…Our ponds had a maximum depth of only 0.6 m (pond B). The volumetric rates of production in ponds A and B spanned the rates measured in a hypertrophic prairie lake (Robarts et al 1992) while the daily areal values were similar to rates measured in prairie pothole lakes (Barica 1975;Papst et al 1980). The lower rates of primary production in pond C compared with the other two ponds were partially due to the smaller standing crop of phytoplankton (Fig.…”

Section: Discussionsupporting

confidence: 59%

Phytoplankton primary production of three temporary northern prairie wetlands

Robarts¹,

Arts²,

Donald³

1995

Can. J. Fish. Aquat. Sci.

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Measurements of phytoplankton primary production in three temporary Alberta ponds indicate a huge potential carbon and energy source for higher trophic levels associated with these systems. The ponds had high levels of NO,-N (rnaximum 1.6 m g -~-' ) and PO,-P (maximum 3.6 m g .~-' ) . Water temperature varied by as much as 15°C over the diel cycle, while primary production peaked in mid-afternoon. Production rates ranged from 0.6 to 400 mg ~. r n -~-h -' and were strongly correlated ( r = 0.9) with phytoplankton density. Total annual production for the ponds varied from 187 to 331 1 kg C. These annual production values are low relative to prairie lakes; however, the number of small temporary ponds is about three orders of magnitude greater than lakes making phytoplankton production of these small water bodies a potentially important source of energy in prairie food webs.RCsnmC : Les mesures de Ia production primaire de phytoplancton dans trois 6tangs temporaires situCs en Alberta rCv8lent I'existence d9une importante source potentielle de carbone et d7Cnergie pour les niveaux trophiques supirieurs lies B ces syst5mes. Les Ctawgs prCsentaient des niveaux 6levCs de NO3-N (maximum, 1,6 r n g~-' ) et de PO4-P (maximum, 3,6 mg-L-'). La temptrature de l'eau a variC jusquV8 IP°C, pendant le cycle nycthCmCral, et la production primaire a plafonnC en milieu d7apr8s-midi. Les taux de production ont oscillC de 0,6 2 400 mg ~-m -~. h -' et Ctaient fortement corrClCs (r = 8,9) B la densite du phytoplancton. La production annuelle totale des Ctangs a variC de 187 B 3 31 1 kg @. Ces valeurs sasnt faibles quand on les compare a celles des lacs des prairies; toutefois, Be nsmbre de petits Ctangs temporaires est d'environ trois fois plus ClevC que le nornbre de lacs, en sorte que la production de phytoplancton de ces petites Ctendues d7eau constitue une source potentiellement importante d9Cnergie dans le rCseau alimentdre des prairies.[Traduit par la Rkdaction]

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Section: Discussionsupporting

confidence: 59%

Phytoplankton primary production of three temporary northern prairie wetlands

Robarts¹,

Arts²,

Donald³

1995

Can. J. Fish. Aquat. Sci.

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“…This phenomenon is generally more unusual in polymictic lakes, but not unexpected in eutrophic to hypereutrophic lakes, where short periods of wind stagnation and heightened decompositional activity in summer can result in rapid development of bottom water anoxia at the sediment-water interface (Papst et al 1980;Osgood 1988;Taranu 2008). Meding and Jackson (2003) have also demonstrated that during the winter season, when Albertan lakes are ice-covered, their oxygen decay rates are significantly and positively related to phosphorus concentrations.…”

Section: Paleolimnological Analysesmentioning

confidence: 98%

Contrasting responses of dimictic and polymictic lakes to environmental change: a spatial and temporal study

Taranu

Köster²,

Hall

et al. 2009

Aquat. Sci.

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Although comparative analyses between dimictic and polymictic lakes have noted the key role of mixing regime in governing water quality, limnologists have historically focused on dimictic lakes, leaving polymictic lakes relatively understudied. In this study, we investigated whether the effects of agricultural development on water quality differed between dimictic and polymictic lakes in a naturally nutrient-rich region of Alberta, Canada. Through a spatial limnological analysis of 36 sites, we found that the relationship between surface water total phosphorus concentration and the percent of agriculture (% Agr) in the catchments differed between dimictic and polymictic lakes, where the proportion of variance explained was much more pronounced in the dimictic (79% explained) than in the polymictic systems (7% explained). Paleolimnological analyses of subfossil chironomids in surface sediment samples (0-1 cm) from 18 of the 36 study lakes, and in sediment core profiles from the dimictic and polymictic basins of a eutrophic lake, showed that water quality differed between mixis groups. We found that the surface sediment chironomid assemblages differed significantly between polymictic and dimictic lakes. Detailed analyses of the sediment cores demonstrated that the two basin types differed in their responses to land-use change through time, as only the dimictic basin showed a parallel increase in anoxia with increasing agricultural development. We suggest that in naturally-fertile landscapes, external nutrient loading exerts a more notable effect on dimictic lakes, whereas internal nutrient loading is more important in polymictic systems.

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“…Storm events also often appear to trigger the collapse of algal blooms in prairie lakes Ž . Papst et al, 1980 . Recent studies indicated that algal toxins might initiate outbreaks of avian botulism.…”

mentioning

confidence: 99%

Algal toxins?Initiators of avian botulism?

Murphy¹,

Lawson²,

Nalewajko

et al. 2000

Environ. Toxicol.

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An outbreak of avian botulism in Whitewater Lake, Manitoba, Canada was associated with reducing sediments. But any linkage between sediments and botulism was only indirect; Clostridium botulinum was not observed in the sediments. The source of the C. botulinum was unclear but carcasses that overwintered appeared to perpetuate the outbreak. The algal toxins anatoxin-a and ( ) microcystin-LR were present 17 ( mg/ L when many birds were moulting and unable to fly, likely making them more sensitive to botulism. The sediment anoxia released phosphorus into lakewater so that concentrations increased from about 73 to 470 mg/ L and enhanced growth of Microcystis and Aphanizomenon. Wind resuspension of sediments resulted in areas with more algal biomass and associated algal toxins. ᮊ

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Relationship Between Thermal Stability and Summer Oxygen Depletion in a Prairie Pothole Lake

Cited by 22 publications

References 2 publications

Phytoplankton primary production of three temporary northern prairie wetlands

Phytoplankton primary production of three temporary northern prairie wetlands

Contrasting responses of dimictic and polymictic lakes to environmental change: a spatial and temporal study

Algal toxins?Initiators of avian botulism?

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