Spatial versus temporal heterogeneity in abundance of fishes in north-temperate lakes

2021 ◽  
Author(s):  
Andrew L. Rypel
Keyword(s):  
Temporal Heterogeneity ◽  
Temperate Lakes ◽  
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

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

Regional climatic drivers of synchronous zooplankton dynamics in north-temperate lakes

2008 ◽  
Vol 65 (5) ◽  
pp. 878-889 ◽  
Author(s):  
James A Rusak ◽  
Norman D Yan ◽  
Keith M Somers
Keyword(s):  
Temporal Dynamics ◽  
Southern Oscillation ◽  
Secchi Depth ◽  
Ice Cover ◽  
Temperate Lakes ◽  
Spring Temperature ◽  
Enso Events ◽  
Temperature And Precipitation ◽  
Zooplankton Dynamics ◽  
North Temperate Lakes

The role that climate plays in determining the temporal dynamics of freshwater zooplankton is poorly understood, despite its potential to synchronize population dynamics on a regional basis. We quantify the spatial synchrony of common zooplankton taxa among lakes in the Dorset, Ontario, area and investigate the climatic mechanisms responsible for these patterns at both annual and seasonal scales. We show that the dynamics of several taxa are characterized by similar patterns of abundance among lakes across the region, suggesting a synchronising effect of climate on zooplankton population abundances. Using multiple regression analyses to compare zooplankton dynamics with climatic and in-lake variables, we find that El Niño – Southern Oscillation (ENSO) events and ice cover variability are among the most important predictors of synchrony at annual and seasonal scales, particularly for Leptodiaptomus and Bosmina. Leptodiaptomus, a dominant herbivore in these lakes, had decreased abundances in years with earlier ice-off dates and shorter periods of ice cover. Secchi depth was also synchronous and appeared to respond to regional meteorological factors (spring temperature and precipitation, ice duration). A warming climate with the ability to modify ice and ENSO dynamics, as well as temperature and precipitation patterns, may also alter the structure and dynamics of zooplankton communities in north-temperate lakes.

Predictive Indices of Ecosystem Resilience in Models of North Temperate Lakes

Ecology ◽  
1994 ◽  
Vol 75 (7) ◽  
pp. 2127-2138 ◽  
Author(s):  
Kathryn L. Cottingham ◽  
Stephen R. Carpenter
Keyword(s):  
Ecosystem Resilience ◽  
Temperate Lakes ◽  
North Temperate Lakes

scholarly journals The demography of coarse wood in north temperate lakes

2009 ◽  
Vol 54 (5) ◽  
pp. 1110-1119 ◽  
Author(s):  
ANNA E. MARBURG ◽  
SARAH B. BASSAK ◽  
TIMOTHY K. KRATZ ◽  
MONICA G. TURNER
Keyword(s):  
Temperate Lakes ◽  
North Temperate Lakes
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