Environmental change in Lake Champlain revealed by long-term monitoring

Smeltzer, Eric; Shambaugh, Angela; Stangel, Pete

doi:10.1016/j.jglr.2012.01.002

Cited by 72 publications

(70 citation statements)

References 54 publications

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“…Lake Champlain, Quebec, is an example of a dreissenid-impacted, large shallow (ϳ22 m) lake, with a history of eutrophication issues (Smeltzer et al 2012). Annual lake-wide L gross expressed on an areal basis was 2.1 mg SRP·m −2 ·day −1 , which was 28% of the terrestrial and atmospheric sources (Cornwell and Owens 1999), indicating that internal P loading may not be a large contributor to the overall lake P budget.…”

Section: Lake Champlainmentioning

confidence: 99%

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Orihel

Baulch

Casson

et al. 2017

Can. J. Fish. Aquat. Sci.

198

133

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Many physical, chemical, and biological processes in freshwater ecosystems mobilize the nutrient phosphorus (P) from sediments, which in turn may contribute to the formation of harmful algal blooms. Here, we critically reviewed internal P loading in Canadian fresh waters to understand the geographic patterns and environmental drivers of this important process. From 43 publications, we consolidated 618 estimates of internal P loading from Canadian freshwater ponds, lakes, reservoirs, and coastal wetlands (n = 70). Expressed in terms of total P, short-term gross rates in sediment samples (L gross ) ranged from −27 to 54 mg·m −2 ·day −1 (n = 461), while long-term net rates in whole ecosystems (L net ) ranged from −1694 to 10 640 mg·m −2 ·year −1 (n = 157). The main environmental drivers of this variation were oxygen, pH, geology, and trophic state. Internal P loading tended to be higher during the open-water season and most prominent in small prairie lakes. Priorities for future research on internal P loading should include resolving methodological problems, assessing the relative importance of different mechanisms, examining the influence of anthropogenic activities, and quantifying rates in understudied ecosystems. Résumé :De nombreux processus physiques, chimiques et biologiques dans les écosystèmes d'eau douce mobilisent le phosphore (P), un élément nutritif, des sédiments, ce qui peut favoriser la formation de fleurs d'eau néfastes. Nous avons effectué un examen critique de l'apport interne de P dans les plans d'eau douce canadiens afin de comprendre les motifs de répartition géographique et les facteurs environnementaux qui influent sur cet important processus. À la lumière de 43 publications, nous avons colligé 618 estimations de l'apport interne de P d'étangs, de lacs, de réservoirs et de milieux humides littoraux d'eau douce canadiens (n = 70). Exprimés en termes de P total, les taux d'apport de P à court terme pour les échantillons de sédiments (L gross ) vont de −27 à 54 mg·m -2 ·jour -1 (n = 461), alors que les taux nets à long terme à l'échelle de l'écosystème (L net ) vont de −1694 à 10 640 mg·m -2 ·an -1 (n = 157). Les principaux facteurs environnementaux influant sur ces variations sont l'oxygène, le pH, la géologie et l'état trophique. L'apport interne de P tend à être plus élevé durant la période d'eau libre et le plus marqué dans les petits lacs de prairie. La priorité des travaux futurs sur l'apport interne de P devrait porter sur la résolution de problèmes méthodologiques, l'évaluation de l'importance relative de différents mécanismes, l'examen de l'influence des activités humaines et la quantification des taux dans les écosystèmes sous-étudiés. [Traduit par la Rédaction]

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Section: Lake Champlainmentioning

confidence: 99%

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Orihel

Baulch

Casson

et al. 2017

Can. J. Fish. Aquat. Sci.

198

133

View full text Add to dashboard Cite

show abstract

“…In Missisquoi Bay many cyanobacterial taxa as well as total cyanobacterial biomass were significantly positively correlated with TP concentrations, although this correlation may be partly due to the phosphorus contained within the cyanobacterial cells themselves. Missisquoi Bay is eutrophic in terms of TP McQuaid et al, 2011;Smeltzer et al, 2012) and nutrients probably do not limit primary production (McCarthy et al, 2013).…”

Section: Possible Environmental Effects On Cyanobacterial Distributiomentioning

confidence: 99%

“…Total phosphorus concentrations increased by 72% between 197972% between and 200972% between (Smeltzer et al, 2012, with concentrations averaging 45 μg/L between 1999 and 2003 (Zananski et al, 2010). Smeltzer et al (2012) reported a shift in dominance in the phytoplankton community within the bay from diatoms in the early 1970s and 1990s to cyanobacteria by 2006 while palaeolimnological studies have indicated that eutrophication began during the 1970s and cyanobacterial blooms commenced after 1980.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous spatial and temporal cyanobacterial distributions in Missisquoi Bay, Lake Champlain: An analysis of a 9 year data set

Bowling

Blais

Sinotte

2015

Journal of Great Lakes Research

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“…This 67 km long waterway transports high nutrient loads from the surrounding farmlands into the Missisquoi Bay of Lake Champlain (Smeltzer et al, 2012). This setting thus presents a eutrophic river in a mosaic of agricultural fields, forest fragments and unmanaged riparian buffer strips.…”

Section: Introductionmentioning

confidence: 99%

Agricultural management and flooding shape habitats for non-native earthworms in southern Quebec, Canada

Kernecker

Whalen

Bradley

2015

Applied Soil Ecology

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Environmental change in Lake Champlain revealed by long-term monitoring

Cited by 72 publications

References 54 publications

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Heterogeneous spatial and temporal cyanobacterial distributions in Missisquoi Bay, Lake Champlain: An analysis of a 9 year data set

Agricultural management and flooding shape habitats for non-native earthworms in southern Quebec, Canada

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