Changes in zooplankton and the phenology of the spiny water flea, Bythotrephes, following its invasion of Harp Lake, Ontario, Canada

2001 ◽  
Vol 58 (12) ◽  
pp. 2341-2350 ◽  
Author(s):  
Norman D Yan ◽  
Agnes Blukacz ◽  
W Gary Sprules ◽  
Paul K Kindy ◽  
David Hackett ◽  
...  
Keyword(s):  
Zooplankton Community ◽  
Lake Ontario ◽  
Crustacean Zooplankton ◽  
Total Abundance ◽  
Water Flea ◽  
Two Factors ◽  
The Mean ◽  
Coregonus Artedii ◽  
Lake Herring ◽  
Harp Lake

The crustacean zooplankton community of Harp Lake, Ontario, Canada, has changed appreciably since the invasion by the spiny water flea, Bythotrephes. Crustacean species richness has declined, large-bodied Cladocera have replaced small-bodied ones, and there has been a downward trend in the total abundance of zooplankton because copepod abundance has remained stable while Cladoceran abundance has declined. Although the zooplankton community has now been stable for 4 years (1995–1998), the biology of the invader has changed dramatically. In particular, there have been 10-fold differences in the mean annual abundance of Bythotrephes in this 5-year period and substantial changes in the timing of population maxima. We attribute these changes to two factors: (i) transition from a summer to a fall switch from parthenogenesis to gametogenesis and (ii) interannual differences in the thickness of a warm, dark stratum in the lake. We hypothesize that this stratum provides a refuge for Bythotrephes from predation by lake herring, Coregonus artedii.

Selective predation on an introduced zooplankter ( Bythotrephes cederstroemi ) by lake herring ( Coregonus artedii ) in Harp Lake, Ontario

1998 ◽  
Vol 40 (2) ◽  
pp. 343-355 ◽  
Author(s):  
Robert A. Coulas ◽  
Hugh J. Macisaac ◽  
Warren Dunlop
Keyword(s):  
Lake Ontario ◽  
Selective Predation ◽  
Bythotrephes Cederstroemi ◽  
Coregonus Artedii ◽  
Lake Herring ◽  
Harp Lake

Recent changes in the offshore crustacean zooplankton community of Lake Ontario

2014 ◽  
Vol 40 (4) ◽  
pp. 898-910 ◽  
Author(s):  
Richard P. Barbiero ◽  
Barry M. Lesht ◽  
Glenn J. Warren
Keyword(s):  
Zooplankton Community ◽  
Lake Ontario ◽  
Crustacean Zooplankton

Food of the Alewife (Alosa pseudoharengus) in Lake Ontario before and after the Establishment of Bythotrephes cederstroemi

1992 ◽  
Vol 49 (10) ◽  
pp. 2009-2019 ◽  
Author(s):  
Edward L. Mills ◽  
Robert O'Gorman ◽  
Joe DeGisi ◽  
Roy F. Heberger ◽  
Robert A. House
Keyword(s):  
Thermal Structure ◽  
Zooplankton Community ◽  
Lake Ontario ◽  
Trophic Levels ◽  
Crustacean Zooplankton ◽  
Alosa Pseudoharengus ◽  
Fish Feeding ◽  
Niagara River ◽  
Bythotrephes Cederstroemi ◽  
Before And After

Diets and length–weight relationships of Lake Ontario alewife (Alosa pseudoharengus) in 1972 differed from those in 1988; the large cladoceran Bythotrephes cederstroemi colonized the lake during the mid-1980's. Micro-crustacean zooplankton were the dominant prey of alewife during April–October in 1972 and 1988. Although Bythotrephes was not found in 1988 net samples, it replaced other zooplankters in the alewife's diet. Typically, tailspines were the only part of Bythotrephes in alewife stomachs; their frequency was high in April–May, diminished rapidly in summer and was very low by fall. In spring 1988, alewife [Formula: see text] were in better condition than in spring 1972 and this may have been due to larger fish feeding more heavily on Bythotrephes. Variation in diet among widely separated sampling sites was due to differences in alewife abundance, stability of thermal structure, progress of zooplankton community development and distance to the mouth of the Niagara River (through which Bythotrephes probably enter the lake in summer and fall). In the Great Lakes, inter- and intralake differences in diet clearly exist, and these must be incorporated into models of alewife planktivory to gain an accurate understanding of energy flow between trophic levels.

Use of Zooplankton to Assess the Movement and Distribution of Alewife (Alosa pseudoharengus) in South-Central Lake Ontario in Spring

1991 ◽  
Vol 48 (11) ◽  
pp. 2250-2257 ◽  
Author(s):  
Robert O'Gorman ◽  
Edward L. Mills ◽  
Joe DeGisi
Keyword(s):  
Water Temperature ◽  
Size Structure ◽  
Lake Ontario ◽  
Crustacean Zooplankton ◽  
Alosa Pseudoharengus ◽  
Freshwater Lakes ◽  
South Central ◽  
Zooplankton Size ◽  
The Mean ◽  
Change In Mean

Data from assessments of fish and zooplankton conducted during April and May–June 1986–88 in south-central Lake Ontario were examined for evidence that zooplankton size structure can be used to follow the movement of alewife (Alosa pseudoharengus). The spring influx of alewife into nearshore waters was linked with water temperature and coincided with a decline in the mean length of crustacean zooplankton and the virtual disappearance of zooplankters [Formula: see text]. Alewife moving inshore to spawn fed heavily on the largest zooplankters, negating the possibility that changes in zooplankton size were wholly a response to seasonal recruitment as waters warm and the composition shifts to Bosmina. Offshore, there was usually no significant (P < 0.05) change in mean lengths of zooplankton in the upper water column between April and May–june, and zooplankters [Formula: see text] always remained abundant, suggesting that few alewife were there from April through mid-june. We conclude that in large freshwater lakes where a planktivore is abundant, yet spatially concentrated, changes in size of crustacean zooplankton can facilitate understanding of the fish's movement and distribution.

Corrigendum to “Recent changes in the offshore crustacean zooplankton community of Lake Ontario” [J. Great Lakes Res., 40(4)(2014)898–910]

2015 ◽  
Vol 41 (1) ◽  
pp. 312-313
Author(s):  
Richard P. Barbiero ◽  
Barry M. Lesht ◽  
Glenn J. Warren
Keyword(s):  
Great Lakes ◽  
Zooplankton Community ◽  
Lake Ontario ◽  
Crustacean Zooplankton

Changes in the crustacean communities of Lakes Michigan, Huron, and Erie following the invasion of the predatory cladoceran Bythotrephes longimanus

2004 ◽  
Vol 61 (11) ◽  
pp. 2111-2125 ◽  
Author(s):  
Richard P Barbiero ◽  
Marc L Tuchman
Keyword(s):  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Bythotrephes Longimanus ◽  
Zooplankton Community Structure ◽  
Cladoceran Species ◽  
Invertebrate Predators ◽  
Predatory Cladoceran ◽  
Leptodora Kindti ◽  
Escape Responses ◽  
Zooplankton Communities

The crustacean zooplankton communities in Lakes Michigan and Huron and the central and eastern basins of Lake Erie have shown substantial, persistent changes since the invasion of the predatory cladoceran Bythotrephes in the mid-1980s. A number of cladoceran species have declined dramatically since the invasion, including Eubosmina coregoni, Holopedium gibberum, Daphnia retrocurva, Daphnia pulicaria, and Leptodora kindti, and overall species richness has decreased as a result. Copepods have been relatively unaffected, with the notable exception of Meso cyclops edax, which has virtually disappeared from the lakes. These species shifts have for the most part been consistent and equally pronounced across all three lakes. Responses of crustacean species to the Bythotrephes invasion do not appear to be solely a consequence of size, and it is likely that other factors, e.g., morphology, vertical distribution, or escape responses, are important determinants of vulnerability to predation. Our results indicate that invertebrate predators in general, and invasive ones in particular, can have pronounced, lasting effects on zooplankton community structure.

Crustacean zooplankton community structure in temporary and permanent grassland ponds

Hydrobiologia ◽  
2009 ◽  
Vol 632 (1) ◽  
pp. 225-233 ◽  
Author(s):  
S. Matthew Drenner ◽  
Stanley I. Dodson ◽  
Ray W. Drenner ◽  
John E. Pinder III
Keyword(s):  
Community Structure ◽  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Zooplankton Community Structure ◽  
Permanent Grassland

Dynamics of Cadmium-Stressed Plankton Communities

1980 ◽  
Vol 37 (3) ◽  
pp. 403-414 ◽  
Author(s):  
J. S. Marshall ◽  
D. L. Mellinger
Keyword(s):  
Dissolved Oxygen ◽  
Lake Michigan ◽  
Zooplankton Community ◽  
Cadmium Stress ◽  
Crustacean Zooplankton ◽  
Functional Responses ◽  
Experimental Lakes Area ◽  
Individual Values ◽  
Zooplankton Density ◽  
Plankton Communities

Structural and functional responses of plankton communities to cadmium stress were studied during 1977 in Lake Michigan using small-volume (8 L) completely sealed enclosures, and in Canada's Experimental Lakes Area (ELA) Lake 223 using large-volume (1.5 × 105 L) open-surface enclosures. In Lake Michigan, reductions of the average abundance of micro-crustaceans by cadmium were significantly greater in "light" or shallow epilimnetic incubations than they were in "dark" or deep epilimnetic incubations. Measurements of dissolved oxygen indicated that this interaction with light (depth) was an indirect effect due to a reduction of photosynthesis and primary production. Zooplankton density and species diversity were not significantly affected within 21 d by cadmium concentrations [Formula: see text] and [Formula: see text] Cd/L, respectively, whereas final dissolved oxygen concentration and percentage similarity (PS) of the crustacean zooplankton community were significantly reduced by [Formula: see text] Cd/L. In the ELA Lake 223 experiment, the reducing effect of cadmium on zooplankton density increased up to 31 d after Cd enrichment and then decreased, probably due to decreasing Cd concentrations in the water. Values of PS on day 24 for the ELA enclosures enriched with 1 and 3 μg Cd/L were within the 95% confidence limits for individual values predicted from a regression of PS on cadmium for the 21-d Lake Michigan experiments.Key words: plankton communities, zooplankton, phytoplankton, cadmium stress, Lake Michigan, Canadian Shield lakes

Examination of direct daytime predation by Coregonus artedi on Bythotrephes longimanus in Harp Lake, Ontario, Canada: no evidence for the refuge hypothesis

2009 ◽  
Vol 66 (3) ◽  
pp. 449-459 ◽  
Author(s):  
Joelle D. Young ◽  
Ellis R. Loew ◽  
Norman D. Yan
Keyword(s):  
Cold Water ◽  
Lake Ontario ◽  
Planktivorous Fish ◽  
Bythotrephes Longimanus ◽  
Death Rates ◽  
Direct Observations ◽  
Coregonus Artedi ◽  
Selection Of ◽  
Gill Netting ◽  
Harp Lake

Since its introduction to Harp Lake, Ontario, Canada, summer abundance of the cladoceran zooplanktivore Bythotrephes longimanus has fluctuated substantially both among and within years. The principal planktivorous fish in Harp Lake is the cold-water Coregonus artedi (cisco). Previous studies hypothesized that Bythotrephes abundance was affected by the thickness of an ephemeral, dark, daytime refuge from cisco that potentially established at the bottom of the metalimnion. During summer of 2003, we estimated peak daytime refuge thickness by simulating light energy visible to cisco and found it was always negative and did not correlate with Bythotrephes death rates. Direct observations using gill-netting and acoustical methods suggested that cisco had frequent metalimnetic forays. Additionally, including years 2000–2004, the previous correlation between mean Bythotrephes abundance and refuge thickness no longer held. The refuge hypothesis appears to fail, as the amount of metalimnetic illumination was always above the level at which cisco reaction distance to prey is maximal. Selection of Bythotrephes by cisco instead appeared to increase once Bythotrephes became abundant, remaining consistent and nontrivial even after Bythotrephes population declined.

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