Bioaccumulation and Effects of Cadmium and Zinc in a Lake Michigan Plankton Community

1983 ◽  
Vol 40 (9) ◽  
pp. 1469-1479 ◽  
Author(s):  
J. S. Marshall ◽  
J. I. Parker ◽  
D. L. Mellinger ◽  
C. Lei
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Lake Michigan ◽  
Plankton Community ◽  
Crustacean Zooplankton ◽  
Zooplankton Species ◽  
Community Similarity ◽  
Zooplankton Community Structure ◽  
Keratella Cochlearis ◽  
In Situ Experiments

We conducted four in situ experiments in the southern basin of Lake Michigan to determine the responses of the plankton community to additions of cadmium (3 μg/L) and zinc (15, 30, 60, and 90 μg/L) as well as the bioaccumulation of zinc by different species of crustacean zooplankton. Total cadmium and zinc concentrations in treated enclosures (accounting for pretreatment lakewater concentrations of ~ 20 ng Cd and ~ 1 μg Zn per litre) were calculated from measurements of 109Cd and 65Zn with known specific activities.Zinc significantly reduced zooplankton populations and several other properties of community structure and function at concentrations much lower than those previously reported to be toxic to zooplankton and well below the levels established for protection of freshwater life. Zinc additions as low as 15 μg/L significantly reduced chlorophyll a, primary productivity, dissolved oxygen, specific zooplankton populations, zooplankton species diversity, and community similarity within 2 wk. Populations of several zooplankton species were severely reduced by 15 μg/L; for example, the population of the rotifer Conochilus unicornis was reduced to less than 1% of that in controls. Secondary, indirect effects included significant increases of a few populations, including Bosmina longirostris and Keratella cochlearis, for zinc additions of 15 and 30 μg/L. Most of the populations and community properties that we measured showed somewhat different percentage reductions in response to a given zinc addition at different times, but their relative (rank) values at different times were similar. Specific zooplankton populations were more sensitive to zinc than community similarity indices, and species diversity indices were relatively insensitive. Bioaccumulation of zinc by different species of crustaceans increased with added zinc but showed few significant differences among species. The small differences among species could, nevertheless, partially account for some of the observed changes in 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

Historic Changes in Lake Michigan Zooplankton Community Structure: The 1960s Revisited with Implications for Top-Down Control

1992 ◽  
Vol 49 (8) ◽  
pp. 1734-1749 ◽  
Author(s):  
Marlene S. Evans
Keyword(s):  
Community Structure ◽  
Lake Michigan ◽  
Species Abundance ◽  
Zooplankton Community ◽  
Water Clarity ◽  
Phosphorus Loading ◽  
Top Down ◽  
Zooplankton Community Structure ◽  
The 1960S

Recent changes in the Lake Michigan ecosystem provide a benchmark against which to reevaluate historic data. During the 1960s, the alewife (Alosa pseudoharengus) population exploded and then crashed. Offshore zoo-plankton data for the summers of 1954, 1966, and 1968 provided evidence that variations in alewife abundance had a major effect on zooplankton community structure. Based on these observations, other researchers have hypothesized that increased and decreased phytoplankton abundances during the 1960s as recorded at the Chicago water filtration plant were due to top-down effects rather than to phosphorus loading. This argument is reevaluated using two approaches. First, from the relationship between interannual variability in alewife and zooplankton species abundance during the summers of 1954, 1966, 1968, 1977, 1982, and 1984–87, I conclude that the effects of alewife predation on zooplankton community structure during the 1960s are less clear then originally proposed. Second, from estimates of Daphnia spp. grazing rates, considerations of the source of the long-term phytoplankton data used to support the top-down argument, regional differences in phytoplankton, zooplankton and alewife abundance trends, and historic water clarity observations, I conclude that existing data are insufficient to support the top-down argument that long-term trends in phytoplankton abundance were primarily affected by fluctuations in alewife abundance.

scholarly journals Hydrodynamics Regulate Longitudinal Plankton Community Structure in an Alpine Cascade Reservoir System

2021 ◽  
Vol 12 ◽  
Author(s):  
Yang Liu ◽  
Chengyan Li ◽  
Shenglong Jian ◽  
Shiyu Miao ◽  
Kemao Li ◽  
...  
Keyword(s):  
Community Structure ◽  
Hydrological Regime ◽  
Wiener Index ◽  
Plankton Community ◽  
Zooplankton Species ◽  
Cascade Reservoirs ◽  
Reservoir System ◽  
Drainage Rate ◽  
Reservoir Systems ◽  
Nutrient Conditions

Previous studies report significant changes on biotic communities caused by cascade reservoir construction. However, factors regulating the spatial–temporal plankton patterns in alpine cascade reservoir systems have not been fully explored. The current study explored effects of environmental factors on the longitudinal plankton patterns, through a 5-year-long study on the environmental factors and communities of phytoplankton and zooplankton in an alpine cascade reservoir system located upstream of Yellow River region. The findings showed that phytoplankton and zooplankton species numbers in the studied cascade reservoir system were mainly regulated by the hydrological regime, whereas nutrient conditions did not significantly affect the number of species. Abundance and biovolume of phytoplankton in cascade reservoirs were modulated by the hydrological regime and nutrient conditions. The drainage rate, N:P ratio, and sediment content in cascade reservoirs were negatively correlated with abundance and biovolume of phytoplankton. Abundance and biovolume of zooplankton were not significantly correlated with the hydrological regime but showed a strong positive correlation with nutrient conditions in cascade reservoirs. Shannon–Wiener index (H’) and the Pielou index (J) of phytoplankton were mainly regulated by the hydrological regime factors, such as drainage rate and sediment content in cascade reservoirs. However, temperature and nutrient conditions were the main factors that regulated the Shannon–Wiener index (H’) and the Pielou index (J) of zooplankton. Species number, abundance, and biovolume of phytoplankton showed a significant positive correlation with those of zooplankton. Hydrodynamics and nutrient conditions contributed differently in regulating community structure of phytoplankton or zooplankton. These findings provide an understanding of factors that modulate longitudinal plankton community patterns in cascade reservoir systems.

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

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

An In Situ Study of Cadmium and Mercury Stress in the Plankton Community of Lake 382, Experimental Lakes Area, Northwestern Ontario

1981 ◽  
Vol 38 (10) ◽  
pp. 1209-1214 ◽  
Author(s):  
J. S. Marshall ◽  
J. I. Parker ◽  
D. L. Mellinger ◽  
S. G. Lawrence
Keyword(s):  
Inorganic Mercury ◽  
Zooplankton Community ◽  
Plankton Community ◽  
Crustacean Zooplankton ◽  
Experimental Lakes Area ◽  
In Situ Experiments ◽  
Toxic Concentrations ◽  
Shield Lakes ◽  
Plankton Communities

Four in situ experiments with small-volume (28-L) enclosures were conducted in Experimental Lakes Area Lake 382 to assess the effects of inorganic mercury and cadmium on the plankton community. Additions of 0.9 × 10−8 mol Cd/L caused significant reductions of crustacean zooplankton density, zooplankton community similarity, zooplankton species diversity, and dissolved oxygen concentration over 3-wk periods. Additions of 1.0 × 10−8 mol Hg/L caused reductions similar to those of 0.9 × 10−8 mol Cd/L. Phytoplankton primary productivity was reduced by additions of 2.0 × 10−8 mol Hg/L but not by 1.0 × 10−8 mol Hg/L. On a molar concentration basis, the toxicities of inorganic mercury and cadmium were quite similar. Significant changes in lake plankton communities may occur at molar concentrations above 0.2 × 10−8 mol/L. Potentially toxic concentrations of cadmium may occur in many contaminated lakes, but toxic concentrations of mercury probably occur in few lakes.Key words: Precambrian Shield lakes, plankton communities, phytoplankton, zooplankton, cadmium, mercury toxicity

Species composition of limnetic zooplankton from the southern coastal areas (Mathbaria and Bakerganj) in Bangladesh

2013 ◽  
Vol 38 (1) ◽  
pp. 111-117
Author(s):  
Pronob K Mozumder ◽  
Samsun Nahar ◽  
M Niamul Naser ◽  
Munirul Alam ◽  
Anwar Huq ◽  
...  
Keyword(s):  
Community Structure ◽  
Species Composition ◽  
Zooplankton Community ◽  
Coastal Areas ◽  
Zooplankton Species ◽  
Zooplankton Community Structure

We studied the coastal zooplankton community structure of six waterbodies of Mathbaria and Bakerganj from January 2008 to June 2009. In total 35 zooplankton species were identified under 26 genera under 20 families under 8 orders from Mathbaria. Among them 6 were protozoans, 24 were rotifers, 3 were copepods, 1 was cladocerans and 1 was ostracods. From Bakergonj a total of 42 zooplankton species were identified under 23 genera under 17 Families under 7 orders. Among them 3 were protozoans, 25 were rotifers, 7 were copepods, 6 were cladocerans and 1 was ostracods. Results showed that abundance of rotifera group from both area was higher in Mathbaria (64.86%) and Bakerganj (60.98%) than other groups while abundance of ostracoda of Bakerganj area was lowest. DOI: http://dx.doi.org/10.3329/jasbs.v38i1.15326 J. Asiat. Soc. Bangladesh, Sci. 38(1): 111-117, June 2012

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