Zooplankton community responses to a novel forest insecticide, tebufenozide (RH-5992), in littoral lake enclosures

1998 ◽  
Vol 55 (3) ◽  
pp. 639-648 ◽  
Author(s):  
David P Kreutzweiser ◽  
John M Gunn ◽  
Dean G Thompson ◽  
Heather G Pollard ◽  
Marvin J Faber
Keyword(s):  
Community Structure ◽  
Repeated Measures ◽  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Significant Treatment ◽  
Northern Ontario ◽  
Environmental Concentration ◽  
Oxygen Conductivity ◽  
Exponential Decline ◽  
Zooplankton Communities

The effects of tebufenozide (RH-5992), a potential forest insecticide, on zooplankton communities were determined in 16 littoral enclosures in a small forest lake of northern Ontario. Community structure in enclosures treated with 9, 36, or 157 µg tebufenozide/L ( 0.2, 0.7, and 3 times the expected environmental concentration) was compared with natural zooplankton communities in control enclosures. No significant treatment effects on zooplankton communities were detected, even at 3 times the expected environmental concentration. While some changes in community structure of crustacean zooplankton in enclosures occurred through the season, these did not appear to be related to the tebufenozide treatments. Tebufenozide residues in water dissipated following exponential decline kinetics with time to 50% dissipation (DT50) ranging from 32 to 35 days irrespective of initial concentration. There were no differences in pH, dissolved oxygen, conductivity, and phytoplankton abundance among treatment levels (repeated-measures ANOVA, p > 0.07).

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

scholarly journals Zooplankton Community Response to Seasonal Hypoxia: A Test of Three Hypotheses

Diversity ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 21 ◽  
Author(s):  
Julie E. Keister ◽  
Amanda K. Winans ◽  
BethElLee Herrmann
Keyword(s):  
Community Structure ◽  
Puget Sound ◽  
Temporal Stability ◽  
Zooplankton Community ◽  
Community Response ◽  
Crustacean Zooplankton ◽  
Zooplankton Abundance ◽  
Calanoid Copepods ◽  
Low Oxygen ◽  
Seasonal Hypoxia

Several hypotheses of how zooplankton communities respond to coastal hypoxia have been put forward in the literature over the past few decades. We explored three of those that are focused on how zooplankton composition or biomass is affected by seasonal hypoxia using data collected over two summers in Hood Canal, a seasonally-hypoxic sub-basin of Puget Sound, Washington. We conducted hydrographic profiles and zooplankton net tows at four stations, from a region in the south that annually experiences moderate hypoxia to a region in the north where oxygen remains above hypoxic levels. The specific hypotheses tested were that low oxygen leads to: (1) increased dominance of gelatinous relative to crustacean zooplankton, (2) increased dominance of cyclopoid copepods relative to calanoid copepods, and (3) overall decreased zooplankton abundance and biomass at hypoxic sites compared to where oxygen levels are high. Additionally, we examined whether the temporal stability of community structure was decreased by hypoxia. We found evidence of a shift toward more gelatinous zooplankton and lower total zooplankton abundance and biomass at hypoxic sites, but no clear increase in the dominance of cyclopoid relative to calanoid copepods. We also found the lowest variance in community structure at the most hypoxic site, in contrast to our prediction. Hypoxia can fundamentally alter marine ecosystems, but the impacts differ among systems.

pH 6 as the threshold to use in critical load modeling for zooplankton community change with acidification in lakes of south-central Ontario: accounting for morphometry and geography

2003 ◽  
Vol 60 (2) ◽  
pp. 151-158 ◽  
Author(s):  
C A Holt ◽  
N D Yan ◽  
K M Somers
Keyword(s):  
Zooplankton Community ◽  
Single Species ◽  
Community Change ◽  
Step Function ◽  
Crustacean Zooplankton ◽  
Load Modeling ◽  
South Central ◽  
Species Abundances ◽  
Community Data ◽  
Zooplankton Communities

Identifying thresholds of biotic community change along stressor gradients may be useful to both ecologists and lake managers; however, there are several weaknesses in the thresholds that have been identified for zooplankton communities along acidity gradients. The thresholds are often based on a single species even though pH sensitivities vary among species. They often measure changes in species occurrences, though abundances may be a more responsive indicator of damage. Their identification may be confounded by spatial and morphometric factors if they are derived from lake surveys. Finally, the thresholds have usually been subjectively identified. Our goal was to establish a threshold in zooplankton community change along an acidity gradient that did not have these four common weaknesses. We used two crustacean zooplankton community metrics: species richness and scores of a correspondence analysis based on species abundances. Spatial and morphometric patterns were detected in the zooplankton community data and then extracted. The relationship between zooplankton and acidity was then modeled using a step function that objectively identified a threshold of community change at pH 6 for lakes in south-central Ontario.

Long-term directional trajectories among lake crustacean zooplankton communities and water chemistry

2018 ◽  
Vol 75 (11) ◽  
pp. 1926-1939 ◽  
Author(s):  
Karl A. Lamothe ◽  
Donald A. Jackson ◽  
Keith M. Somers
Keyword(s):  
Water Chemistry ◽  
Land Use Changes ◽  
Zooplankton Community ◽  
Critical Issue ◽  
Relative Magnitude ◽  
Crustacean Zooplankton ◽  
Acidified Lakes ◽  
Experimental Acidification ◽  
Zooplankton Communities ◽  
Lake Systems

Understanding community responses to disturbance is a long-standing challenge in ecology and will remain a critical issue as human activity continues to alter environmental conditions. This is particularly concerning for freshwater communities, which are often subject to the effects of multiple disturbances on the landscape. With crustacean zooplankton community composition data and associated water chemistry from 19 Ontario lakes, we quantify the relative magnitude and directionality of change over three decades using distances in multivariate ordinations. The data span a gradient of impact from minimally disturbed reference lakes to lakes with known impacts from experimental acidification trials, atmospheric acidification, and regional land-use changes. Most communities exhibited changes from historical conditions, including previously described reference systems. Zooplankton communities in experimentally acidified lakes showed gradual, directional patterns with a return to historical conditions postmanipulation, but have since deviated again from historical conditions. Most zooplankton communities in atmospherically acidified lakes showed gradual, directional trajectories over time. Overall, our results demonstrate that zooplankton communities are changing among both minimally disturbed lake systems and lakes known to be impacted by human activities.

The Structure of Crustacean Zooplankton Communities in Glaciated Eastern North America

1981 ◽  
Vol 38 (11) ◽  
pp. 1428-1437 ◽  
Author(s):  
J. C. Roff ◽  
W. G. Sprules ◽  
J. C. H. Carter ◽  
M. J. Dadswell
Keyword(s):  
Community Structure ◽  
North America ◽  
Zooplankton Community ◽  
Common Species ◽  
Crustacean Zooplankton ◽  
Eastern North America ◽  
Biological Interactions ◽  
Small Lakes ◽  
Mysis Relicta ◽  
Zooplankton Community Structure

The zooplankton community structure of 696 lakes in Pleistocene glaciated eastern North America indicated to us that glacial influence was the primary determinant of community structure. Using this criterion we successfully discriminated 82% of the lakes between glacial lakes, to which Diaptomus sicilis, Limnocalanus macrurus, Mysis relicta, and Senecella calanoides were restricted, and nonglacial lakes, to which Cyclops scutifer, Eubosmina longispina, Daphnia pulex, D. catawba, and other species were characteristic. A third large group of common species was distributed throughout the study area with no particular relation to glacial lake influence. No clear patterns in community structure with respect to size of zooplankters were discerned. Although some species distributions or abundances were consistent with the well-known predatory and competitive interactions among zooplankters typical of small lakes and ponds, for example, the negative correlation between the predatory Mysis relicta and Eubosmina longispina, most were not. We suggest that this arose partly because the study area is large and heterogeneous and partly because the biological interactions observed in small lakes and ponds may be less intense in the more physically complex environment of large lakes.Key words: zooplankton, community structure, glacial opportunists, multivariate analysis, zoogeography, size-efficiency hypothesis

Using functional traits to investigate the determinants of crustacean zooplankton community structure

Oikos ◽  
2013 ◽  
Vol 122 (12) ◽  
pp. 1700-1709 ◽  
Author(s):  
Richard J. Vogt ◽  
Pedro R. Peres-Neto ◽  
Beatrix E. Beisner
Keyword(s):  
Community Structure ◽  
Functional Traits ◽  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Zooplankton Community Structure

scholarly journals Crustacean zooplankton community structure in Lake Bosten, Xinjiang

2011 ◽  
Vol 23 (6) ◽  
pp. 926-933
Author(s):  
WANG Songbo ◽  
◽  
XUE Qingju ◽  
GAO Guang ◽  
TANG Xiangming ◽  
...  
Keyword(s):  
Community Structure ◽  
Zooplankton Community ◽  
Crustacean Zooplankton ◽  
Zooplankton Community Structure
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