scholarly journals Climate and food web effects on the spring clear‐water phase in two north‐temperate eutrophic lakes

2020 ◽  
Author(s):  
Shin‐Ichiro S. Matsuzaki ◽  
Richard C. Lathrop ◽  
Stephen R. Carpenter ◽  
Jake R. Walsh ◽  
M. Jake Vander Zanden ◽  
...  
Keyword(s):  
Food Web ◽  
Water Phase ◽  
Clear Water ◽  
Eutrophic Lakes ◽  
Clear Water Phase

scholarly journals Food web effects and the disappearance of the spring clear water phase in Onondaga Lake following nutrient loading reductions

2010 ◽  
Vol 26 (3) ◽  
pp. 169-177 ◽  
Author(s):  
Roland W. Wang ◽  
Lars G. Rudstam ◽  
Thomas E. Brooking ◽  
David J. Snyder ◽  
Mark A. Arrigo ◽  
...  
Keyword(s):  
Food Web ◽  
Nutrient Loading ◽  
Water Phase ◽  
Onondaga Lake ◽  
Clear Water ◽  
Clear Water Phase

Daphnia grazing, the clear water phase, and implications of minerogenic particles in Onondaga Lake

Inland Waters ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 317-330 ◽  
Author(s):  
Steven W Effler ◽  
Michael E Spada ◽  
Rakesh K Gelda ◽  
Feng Peng ◽  
David A Mattews ◽  
...  
Keyword(s):  
Water Phase ◽  
Onondaga Lake ◽  
Clear Water ◽  
Clear Water Phase ◽  
Minerogenic Particles

Comparison of Dynamic Models for Edible Phytoplankton

1993 ◽  
Vol 50 (8) ◽  
pp. 1757-1767 ◽  
Author(s):  
Stephen R. Carpenter ◽  
Richard C. Lathrop ◽  
Alejandro Muñoz-del-Rio
Keyword(s):  
Functional Response ◽  
Algal Growth ◽  
Water Phase ◽  
Series Data ◽  
Type I ◽  
Clear Water ◽  
Alternative Models ◽  
Lake Mendota ◽  
Edible Algae ◽  
Clear Water Phase

Alternative models for the dynamics of edible phytoplankton were compared using long-term data from mesotrophic Paul Lake and eutrophic Lake Mendota. Alternative models fit to the data contrasted linear versus logistic algal growth, type I versus type II functional response, and prey-dependent versus ratio-dependent predation. In both lakes, the model with lowest prediction error had logistic algal growth and a type I, prey-dependent functional response. Under these models, the spring bloom and clear-water phase of productive lakes can be explained as an incomplete predator–prey cycle: the spring pulse of edible algae is followed by a peak of Zooplankton; then, edible algae are overgrazed leading to the clear-water phase and collapse of the grazer biomass. This study demonstrates the use of time series data at the ecosystem scale to identify process-based models, contrast alternative models on a probabilistic basis, and estimate parameters. This approach avoids the assumptions involved in extrapolating ecosystem models from smaller scale studies.

scholarly journals Do zooplankton contribute to an ultraviolet clear-water phase in lakes?

2007 ◽  
Vol 52 (2) ◽  
pp. 662-667 ◽  
Author(s):  
Craig E. Williamson ◽  
Hendrika J. De Lange ◽  
Dina M. Leech
Keyword(s):  
Water Phase ◽  
Clear Water ◽  
Clear Water Phase

Clear-water phase in the Řimov Reservoir (South Bohemia): Controlling factors

1991 ◽  
Vol 24 (2) ◽  
pp. 1336-1339
Author(s):  
V. Vyhnálek ◽  
J. Komárková ◽  
J. Seďa ◽  
Z. Brandl ◽  
K. Šimek ◽  
...  
Keyword(s):  
Controlling Factors ◽  
Water Phase ◽  
Clear Water ◽  
Římov Reservoir ◽  
Clear Water Phase ◽  
South Bohemia

Influences of grazing on temporal patterns of algal pigments in suspended and sedimenting algae in a north temperate lake

1999 ◽  
Vol 56 (1) ◽  
pp. 60-69 ◽  
Author(s):  
David Poister ◽  
David E Armstrong ◽  
James P Hurley
Keyword(s):  
Water Column ◽  
Chlorophyll A ◽  
Temporal Trends ◽  
Sediment Traps ◽  
Grazing Pressure ◽  
Water Phase ◽  
Carotenoid Pigment ◽  
Clear Water ◽  
Heavy Grazing ◽  
Clear Water Phase

The concentrations of phytoplankton pigments in suspended and settling particles were measured in Trout Lake, Wisconsin, U.S.A., during the 1993 ice-free season. A decrease in water column concentrations of chlorophyll a coincident with an increase in pheophorbide and pheophytin concentrations occurred during a "clear-water" phase in June. The lack of a corresponding decrease in carotenoid pigment concentrations indicated that carotenoid pigments were degraded to a lesser extent than chlorophyll a during this period of heavy grazing pressure. Chlorophyll a, pheophorbide, and pheophytin showed temporal trends in fluxes to sediment traps that were similar for all pigments but did not correspond to trends in water column pigment concentration. Fucoxanthin concentrations and microscopic examination indicated that the sedimentation of large, dense diatoms increased the sedimentation rate of chlorophyll during the clear-water phase. In addition, ungrazed diatoms apparently were the main source of pheophorbide in trap material during the clear-water phase, indicating that pheophorbide should not be used as a surrogate for fecal pellet sedimentation in lakes influenced by the sedimentation of large diatoms.

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