Earlier winter/spring runoff and snowmelt during warmer winters lead to lower summer chlorophyll‐ a in north temperate lakes

2021 ◽  
Author(s):  
Allison R. Hrycik ◽  
Peter D. F. Isles ◽  
Rita Adrian ◽  
Matthew Albright ◽  
Linda C. Bacon ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Temperate Lakes ◽  
Spring Runoff ◽  
North Temperate Lakes

Optimal sampling period for predicting phosphores and chlorophyll concentrations in north-temperate lakes

1995 ◽  
Vol 52 (8) ◽  
pp. 1812-1815 ◽  
Author(s):  
Robert L. France ◽  
Robert H. Peters ◽  
Robert H. Rishikof
Keyword(s):  
Chlorophyll A ◽  
Total Phosphorus ◽  
Trophic Status ◽  
Sampling Period ◽  
Seasonal Patterns ◽  
Optimal Sampling ◽  
Temperate Lakes ◽  
Empirical Relationships ◽  
North Temperate Lakes ◽  
Frequent Sampling

Because total phosphorus and chlorophyll a concentrations vary seasonally within north-temperate lakes, estimates of lake trophic status are usually based on several to many sampling visits. However, because such effort is not always logistically possible, the empirical relationships developed between these trophic status indicators may depend upon seasonal patterns of sampling. Clearly, it is desirable to know if some periods of the year are more likely to produce representative estimates of total phosphorus and chlorophyll a, or, alternatively, if sampling in other periods should be restricted or even avoided. Data from north-temperate lakes are used to examine the degree to which single monthly samples for total phosphorus and chlorophyll a represent seasonal means. Analyses indicate that the least precise and least accurate estimates of the means occur when single-visit synoptic surveys are conducted during April. Not until August to September do single sampling visits provide data that approximate those represented by the means garnered through more frequent sampling.

Variability in phosphorus concentrations in north temperate lakes: A case study of anthropogenic forcing

1984 ◽  
Vol 22 (1) ◽  
pp. 633-637
Author(s):  
P. B. R. Archer ◽  
B. Henderson-Sellers
Keyword(s):  
Temperate Lakes ◽  
Anthropogenic Forcing ◽  
North Temperate Lakes

Multiscale drivers of phytoplankton communities in north‐temperate lakes

2020 ◽  
Vol 30 (5) ◽  
Author(s):  
Charlie J. G. Loewen ◽  
Faye R. Wyatt ◽  
Colleen A. Mortimer ◽  
Rolf D. Vinebrooke ◽  
Ron W. Zurawell
Keyword(s):  
Temperate Lakes ◽  
Phytoplankton Communities ◽  
North Temperate Lakes

The effect of dreissenid invasions on chlorophyll and the chlorophyll : total phosphorus ratio in north-temperate lakes

2011 ◽  
Vol 68 (2) ◽  
pp. 319-329 ◽  
Author(s):  
S. N. Higgins ◽  
M. J. Vander Zanden ◽  
L. N. Joppa ◽  
Y. Vadeboncoeur
Keyword(s):  
Total Phosphorus ◽  
Dreissena Polymorpha ◽  
Trophic Status ◽  
Hierarchical Modeling ◽  
Significant Decline ◽  
Analysis Of Covariance ◽  
Temperate Lakes ◽  
Regression Approach ◽  
North Temperate Lakes ◽  
Lake Size

We investigated the effects of dreissenid mussel ( Dreissena polymorpha and D. rostriformis bugensis ) invasions on the concentrations of chlorophyll a (Chl) and total phosphorus(TP), and the Chl:TP ratio within 27 north-temperate lakes that spanned large gradients in lake size and trophic status, using two approaches: (i) regression analysis and (ii) hierarchical modeling. Overall, Chl declined by 40%–45% after dreissenid invasion and the magnitude of effect was structured by epilimnetic volume within stratified, but not nonstratified (mixed) lakes. Declines in TP over the invasion period were significant only for stratified systems and were smaller (∼16% reduction from pre-invasion values) than for Chl. Across the complete trophic gradient (i.e., among lakes) the regression approach (analysis of covariance) indicated a significant decline in the intercept of the Chl:TP, but not the slope. In contrast, hierarchical modeling indicated a decline in the slope of Chl:TP among lakes between pre- and post-invasion periods. As with Chl, the effect of dreissenids on Chl:TP declined with increases in epilimnetic volume in stratified, but not nonstratified lakes. Dreissenid effects on Chl were prolonged, with no indication of diminishing within 7–10 years of invasion.

Potential effects of global climate change on small north-temperate lakes: Physics, fish, and plankton

1996 ◽  
Vol 41 (5) ◽  
pp. 1136-1149 ◽  
Author(s):  
Bart T. De Stasio ◽  
David K. Hill ◽  
Julie M. Kleinhans ◽  
Nathan P. Nibbelink ◽  
John J. Magnuson
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Global Climate ◽  
Temperate Lakes ◽  
North Temperate Lakes

Natural and Human Influences on Fish Species Richness in Small North Temperate Lakes: Implications for Bioassessment

2009 ◽  
Vol 24 (1) ◽  
pp. 7-18 ◽  
Author(s):  
Martin J. Jennings ◽  
Gene R. Hatzenbeler ◽  
Michael A. Bozek ◽  
Clayton Edwards
Keyword(s):  
Species Richness ◽  
Fish Species ◽  
Temperate Lakes ◽  
North Temperate Lakes

Erratum Dissolved organic carbon concentration controls benthic primary production: Results from in situ chambers in north-temperate lakes

2015 ◽  
Vol 61 (1) ◽  
pp. 407-407
Author(s):  
Sean C. Godwin ◽  
Stuart E. Jones ◽  
Brian C. Weidel ◽  
Christopher T. Solomon
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Primary Production ◽  
Carbon Concentration ◽  
Temperate Lakes ◽  
Benthic Primary Production ◽  
Organic Carbon Concentration ◽  
North Temperate Lakes

scholarly journals Spatial heterogeneity strongly affects estimates of ecosystem metabolism in two north temperate lakes

2012 ◽  
Vol 57 (6) ◽  
pp. 1689-1700 ◽  
Author(s):  
Matthew C. Van de Bogert ◽  
Darren L. Bade ◽  
Stephen R. Carpenter ◽  
Jonathan J. Cole ◽  
Michael L. Pace ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Ecosystem Metabolism ◽  
Temperate Lakes ◽  
North Temperate Lakes
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