Zooplankton as Water Quality Indicator in Shallow Lakes

2019 ◽  
Vol 16 (11) ◽  
pp. 4486-4490
Author(s):  
Olga Yurjevna Derevenskaya ◽  
Evgenia Sergeevna Prytkova ◽  
Elena Nikolaevna Unkovskaya
Keyword(s):  
Shallow Lakes ◽  
Trophic Status ◽  
Zooplankton Community ◽  
Biosphere Reserve ◽  
Physicochemical Studies ◽  
Taxonomic Groups ◽  
Zooplankton Communities ◽  
Quantitative Indicators ◽  
Individual Mass

Long-term studies (1998–2018) of shallow lakes Krugloe and Krutoe (Russia) were carried out. The trophic status of the lakes was estimated using physicochemical parameters of water and the indicators of zooplankton. Physicochemical studies of Krugloe and Krutoe lake water make it possible to classify these reservoirs as eutrophic according to their trophic status. The lakes are characterized by low water transparency, a high content of organic substances in water, the “blooming” of water is observed periodically, accompanied by the increase of pH to 8–9 units. The zooplankton communities of Krugloe and Krutoe lakes are characterized by relatively low species richness, the dominance of a small number of species, and the predominance of species that are indicators of eutrophic waters. Quantitative indicators of zooplankton are characterized by significant fluctuations in values over the years, the prevalence of rotifers. They showed that zooplankton community is a good indicator of the trophic state of lakes. Such indicators of zooplankton communities as the composition of dominant species, their number, the presence of indicator species, the quantitative indicators of zooplankton and individual taxonomic groups, and the average individual mass of the zooplankton can be used to characterize the trophic status of lakes. They can be recommended for use during monitoring of the lake condition in the Volga-Kama State Natural Biosphere Reserve.

Environmental drivers of a decline in a coastal zooplankton community

2021 ◽  
Author(s):  
Seòna R Wells ◽  
Eileen Bresnan ◽  
Kathryn Cook ◽  
Dafne Eerkes-Medrano ◽  
Margarita Machairopoulou ◽  
...  
Keyword(s):  
Zooplankton Community ◽  
Water Masses ◽  
Environmental Drivers ◽  
High Temporal Resolution ◽  
Monitoring Site ◽  
Zooplankton Abundance ◽  
Offshore Water ◽  
Additive Mixed Models ◽  
Zooplankton Communities

Abstract Major changes in North Atlantic zooplankton communities in recent decades have been linked to climate change but the roles of environmental drivers are often complex. High temporal resolution data is required to disentangle the natural seasonal drivers from additional sources of variability in highly heterogeneous marine systems. Here, physical and plankton abundance data spanning 2003–2017 from a weekly long-term monitoring site on the west coast of Scotland were used to investigate the cause of an increasing decline to approximately -80± 5% in annual average total zooplankton abundance from 2011 to 2017. Generalized additive mixed models (GAMMs), with an autoregressive correlation structure, were used to examine seasonal and inter-annual trends in zooplankton abundance and their relationship with environmental variables. Substantial declines were detected across all dominant taxa, with ∼ 30–70% of the declines in abundance explained by a concurrent negative trend in salinity, alongside the seasonal cycle, with the additional significance of food availability found for some taxa. Temperature was found to drive seasonal variation but not the long-term trends in the zooplankton community. The reduction in salinity had the largest effect on several important taxa. Salinity changes could partly be explained by locally higher freshwater run-off driven by precipitation as well as potential links to changes in offshore water masses. The results highlight that changes in salinity, caused by either freshwater input (expected from climate predictions) or fresher offshore water masses, may adversely impact coastal zooplankton communities and the predators that depend on them.

scholarly journals Identifying zooplankton community changes between shallow and upper-mesophotic reefs on the Mesoamerican Barrier Reef, Caribbean

2016 ◽  
Author(s):  
Dominic A Andradi-Brown ◽  
Catherine Head ◽  
Dan A Exton ◽  
Christina L Hunt ◽  
Alicia Hendrix ◽  
...  
Keyword(s):  
Zooplankton Community ◽  
Barrier Reef ◽  
Depth Gradient ◽  
Light Traps ◽  
Mesophotic Coral Ecosystems ◽  
Community Shifts ◽  
Mesoamerican Barrier Reef ◽  
Community Changes ◽  
Taxonomic Groups ◽  
Zooplankton Communities

Mesophotic coral ecosystems (MCEs, reefs 30 -150m) are understudied, yet the limited research conducted has been biased towards large sessile taxa, such as scleractinian corals and sponges, or mobile taxa such as fish. Here we investigate zooplankton communities on shallow reefs and MCEs around Utila, on the southern Mesoamerican Barrier Reef using planktonic light traps. Zooplankton samples were sorted into broad taxonomic groups. Our results indicate similar taxonomic zooplankton richness and overall biomass between shallow reefs and MCEs, but that abundance of larger bodied (>2 mm) zooplanktonic groups, including decapod crab zoea, mysid shrimps and peracarid crustaceans was higher on MCEs than shallow reefs. Our findings highlight the important of considering zooplankton when identifying broader reef community shifts across the shallow reef to MCE depth gradient.

scholarly journals Zooplankton-based assessment of the trophic state of a tropical forest river in Nigeria

2009 ◽  
Vol 61 (4) ◽  
pp. 733-740 ◽  
Author(s):  
T.O.T. Imoobe ◽  
M.L. Adeyinka
Keyword(s):  
Trophic Status ◽  
Zooplankton Community ◽  
Diversity Indices ◽  
Freshwater Ecosystems ◽  
Trophic Levels ◽  
Strong Correlations ◽  
Zooplankton Community Structure ◽  
Physico Chemical ◽  
Keratella Quadrata ◽  
Zooplankton Communities

In this study, we explore the usefulness of zooplankton as a tool for assessing the trophic status of a Nigerian forest river. The river was sampled monthly and investigated for water physico-chemistry and zooplankton community structure using basic statistical measurement of diversity indices to characterize the zooplankton fauna. The trophic sta?tus of the river evaluated from its physico-chemical parameters indicates that the river is oligotrophic. The zooplankton composition was typical of a tropical freshwater river, with a total of 40 species, made up of 16 rotifers, 12 cladocerans, and 12 copepods and their developing stages in the following order of dominance: Rotifera > Cladocera > Cyclopoida > Calanoida. There were strong correlations between the lake's trophic status and its zooplankton communities. The zoo?plankton community was dominated by numerous species of rotifers and crustaceans, which are typical of oligotrophic to mesotrophic systems, such species including Conochilus dossuarius and Synchaeta longipes. However, the most dominant zooplankton species in West African freshwater ecosystems, viz., Keratella tropica, Keratella quadrata, Brachionus angularis, Trichocerca pusilla, Filinia longiseta, Pompholyx sulcata, and Proales sp., and others that are indicator species of high trophic levels, were not recorded in the river. The river is very clear and can be used for all manner of recreational activities.

scholarly journals SPATIAL-TEMPORAL DYNAMICS OF LITTORAL ZOOPLANKTON COMMUNITY OF THE OLEKSANDRIVKA RESERVOIR

2016 ◽  
Vol 72 (2) ◽  
pp. 75-80
Author(s):  
V. Trokhymets ◽  
D. Lukashov
Keyword(s):  
Seasonal Changes ◽  
Temporal Dynamics ◽  
Zooplankton Community ◽  
Qualitative And Quantitative ◽  
Species Complexes ◽  
Quantitative Development ◽  
Spatio Temporal ◽  
Density And Biomass ◽  
Zooplankton Communities ◽  
Quantitative Indicators

The analysis results of spatio-temporal dynamics of zooplankton communities from littoral of the Oleksandrivka reservoir are presented. The features of the seasonal changes in species composition, faunal and ecological spectrums, quantitative indicators (density and biomass) and the dominant species complexes of littoral zooplankton was revealed. The analysis of seasonal dynamics of qualitative and quantitative development of zooplankton in the littoral zone within the upper, middle and lower parts of the Oleksandrivka reservoir was conducted.

scholarly journals The state of zooplankton communities in the lower Dniester area under the conditions of river regulation and actual climatic changes

2021 ◽  
Author(s):  
Liubovi Lebedenco ◽  
◽  
Mykhailo Nabokyn ◽  
Nadejda Andreev ◽  
Svetlana Kovalyshyna ◽  
...  
Keyword(s):  
Zooplankton Community ◽  
River Regulation ◽  
Zooplankton Biomass ◽  
Individual Characteristics ◽  
The State ◽  
Current State ◽  
Zooplankton Communities ◽  
Physical And Chemical ◽  
Quantitative Indicators ◽  
Planktonic Communities

The study focuses on zooplankton communities of the Lower Dniester. The quantitative indicators of plankton are given and the annual dynamics is described. An assessment of the current state of the river according to the state of zooplankton communities is presented, together with a comparison with historical data, at different stages of river regulation. The changes that occurred in the river zooplankton since the 1950s were analyzed. The relationships between individual characteristics of planktonic communities and the physical and chemical characteristics of the river was also investigated. A comparison of actual data with those collected during 70-80s revealed no significant changes in the structure of the zooplankton community. The proportion of different groups of zooplankton organisms changed insignificantly, the saprobity indices improved slightly, and the average zooplankton biomass did not change. However, compared to the period before 1950s, prior to river regulation for hydropower purposes the role of rotifers in the community was reduced. It might be difficult to identify the main factor determining the development of zooplankton in the Lower Dniester, in order to understand the processes taking place in planktonic communities, it is necessary to analyze the complex impact of hydrological and hydrochemical factors on planktonic communities.

scholarly journals Identifying zooplankton community changes between shallow and upper-mesophotic reefs on the Mesoamerican Barrier Reef, Caribbean

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e2853 ◽  
Author(s):  
Dominic A. Andradi-Brown ◽  
Catherine E. I. Head ◽  
Dan A. Exton ◽  
Christina L. Hunt ◽  
Alicia Hendrix ◽  
...  
Keyword(s):  
Zooplankton Community ◽  
Barrier Reef ◽  
Depth Gradient ◽  
Light Traps ◽  
Mesophotic Coral Ecosystems ◽  
Community Shifts ◽  
Mesoamerican Barrier Reef ◽  
Community Changes ◽  
Taxonomic Groups ◽  
Zooplankton Communities

Mesophotic coral ecosystems (MCEs, reefs 30–150 m) are understudied, yet the limited research conducted has been biased towards large sessile taxa, such as scleractinian corals and sponges, or mobile taxa such as fishes. Here we investigate zooplankton communities on shallow reefs and MCEs around Utila on the southern Mesoamerican Barrier Reef using planktonic light traps. Zooplankton samples were sorted into broad taxonomic groups. Our results indicate similar taxonomic zooplankton richness and overall biomass between shallow reefs and MCEs. However, the abundance of larger bodied (>2 mm) zooplanktonic groups, including decapod crab zoea, mysid shrimps and peracarid crustaceans, was higher on MCEs than shallow reefs. Our findings highlight the importance of considering zooplankton when identifying broader reef community shifts across the shallow reef to MCE depth gradient.

Long-term dynamics of zooplankton in the Matiţa and Merhei shallow lakes (the Danube Delta, Romania). 1. Diversity and abundance

2010 ◽  
Vol 53 (1) ◽  
pp. 423-442
Author(s):  
Victor Zinevici ◽  
Laura Parpală ◽  
Alexandru Petrişor ◽  
Larisa Florescu
Keyword(s):  
Species Richness ◽  
Shallow Lakes ◽  
Zooplankton Community ◽  
Danube Delta ◽  
Informational Entropy ◽  
Nutrient Inputs ◽  
Economic Changes ◽  
Lake Ecosystems ◽  
Additional Information

Long-term dynamics of zooplankton in the Matiţa and Merhei shallow lakes (the Danube Delta, Romania). 1. Diversity and abundance The present paper presents significant changes occurred in the multi-annual dynamics of zooplankton diversity and abundance (1980-2007), under the pressure of human-induced eutrophication in two shallow lakes specific for the Danube Delta. Zooplankton community from lakes Matiţa and Merhei was characterized by high species richness but low abundance values until 1981, in ecological conditions unaffected by eutrophication. For the next ten years, due to obvious increases of human pressures, zooplankton species richness decreased with 52% and 63%, respectively, while abundance values increased with 39% and 16%, respectively. After 1991, the social and economic changes in the Danube countries from the Central Europe led to nutrient input decreases. As a result, lake ecosystems from the Danube Delta showed lower trophicity values and their ecological parameters tended to recover. Analyses on the dynamics of the Shannon-Wiener's informational entropy index, Pielou's evenness and Simpson's index of dominance offered additional information and reduced the heterogeneity of the data regarding the species richness and the numerical abundance dynamics. Moreover, correlation analyses suggested the influences of human-induced changes of nutrient inputs on the multi-annual zooplankton dynamics.

scholarly journals Identifying zooplankton community changes between shallow and upper-mesophotic reefs on the Mesoamerican Barrier Reef, Caribbean

2016 ◽  
Author(s):  
Dominic A Andradi-Brown ◽  
Catherine Head ◽  
Dan A Exton ◽  
Christina L Hunt ◽  
Alicia Hendrix ◽  
...  
Keyword(s):  
Zooplankton Community ◽  
Barrier Reef ◽  
Depth Gradient ◽  
Light Traps ◽  
Mesophotic Coral Ecosystems ◽  
Community Shifts ◽  
Mesoamerican Barrier Reef ◽  
Community Changes ◽  
Taxonomic Groups ◽  
Zooplankton Communities

Mesophotic coral ecosystems (MCEs, reefs 30 -150m) are understudied, yet the limited research conducted has been biased towards large sessile taxa, such as scleractinian corals and sponges, or mobile taxa such as fish. Here we investigate zooplankton communities on shallow reefs and MCEs around Utila, on the southern Mesoamerican Barrier Reef using planktonic light traps. Zooplankton samples were sorted into broad taxonomic groups. Our results indicate similar taxonomic zooplankton richness and overall biomass between shallow reefs and MCEs, but that abundance of larger bodied (>2 mm) zooplanktonic groups, including decapod crab zoea, mysid shrimps and peracarid crustaceans was higher on MCEs than shallow reefs. Our findings highlight the important of considering zooplankton when identifying broader reef community shifts across the shallow reef to MCE depth gradient.

scholarly journals Long-Term Monitoring Reveals Differential Responses of Mussel and Host Fish Communities in a Biodiversity Hotspot

Diversity ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 122
Author(s):  
Irene Sanchez Gonzalez ◽  
Garrett W. Hopper ◽  
Jamie Bucholz ◽  
Carla L. Atkinson
Keyword(s):  
Invasive Species ◽  
Life History ◽  
Biodiversity Hotspot ◽  
Biodiversity Hotspots ◽  
Host Fish ◽  
Long Term Monitoring ◽  
Differential Responses ◽  
Taxonomic Groups ◽  
Term Monitoring

Biodiversity hotspots can serve as protected areas that aid in species conservation. Long-term monitoring of multiple taxonomic groups within biodiversity hotspots can offer insight into factors influencing their dynamics. Mussels (Bivalvia: Unionidae) and fish are highly diverse and imperiled groups of organisms with contrasting life histories that should influence their response to ecological factors associated with local and global change. Here we use historical and contemporary fish and mussel survey data to assess fish and mussel community changes over a 33 year period (1986–2019) and relationships between mussel abundance and their host fish abundance in Bogue Chitto Creek, a tributary of the Alabama River and a biodiversity hotspot. Mussel abundance declined by ~80% and community composition shifted, with eight species previously recorded not found in 2019, and a single individual of the endangered Pleurobema decisum. Fish abundances increased and life history strategies in the community appeared stable and there was no apparent relationship between mussel declines and abundance of host fish. Temporal variation in the proportion of life history traits composing mussel assemblages was also indicative of the disturbances specifically affecting the mussel community. However, changes and declines in mussel assemblages in Bogue Chitto Creek cannot be firmly attributed to any specific factor or events because of gaps in historical environmental and biological data. We believe that mobility differences contributed to differential responses of fish and mussel communities to stressors including habitat degradation, recent droughts and invasive species. Overall, our work indicates that monitoring biodiversity hotspots using hydrological measurements, standardized survey methods and monitoring invasive species abundance would better identify the effects of multiple and interactive stressors that impact disparate taxonomic groups in freshwater ecosystems.

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.

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