scholarly journals Functional responses of zooplankton communities to depth, trophic status, and ion content in mine pit lakes

Hydrobiologia ◽  
2021 ◽  
Author(s):  
Anna Maria Goździejewska ◽  
Jacek Koszałka ◽  
Renata Tandyrak ◽  
Jolanta Grochowska ◽  
Katarzyna Parszuto
Keyword(s):  
Trophic Status ◽  
Environmental Gradients ◽  
Anthropogenic Factors ◽  
Functional Responses ◽  
Ion Content ◽  
Lake Ecosystems ◽  
Stratified Lake ◽  
Mechanisms Of Formation ◽  
Strip Mine ◽  
Zooplankton Communities

AbstractFunctional traits can be used to identify various ecosystem processes that are influenced by natural and anthropogenic factors. We tested the hypothesis that the species composition and functional feeding traits of zooplankton are influenced by environmental gradients, such as depth, trophic status, and ion content. This hypothesis was tested in three lignite strip mine lakes in Central Poland. Two shallow, polymictic lakes were reclaimed (1994 and 2008), and the third deep, stratified lake has been reclaimed during the flooding process, since 2011. Samples were collected monthly in 2016 and 2017. The functional responses of zooplankton communities to environmental variables were tested through redundancy analyses. Both eutrophy and oligotrophy contributed to the taxonomic heterogeneity and functional homogeneity of zooplankton. In eutrophic condition small microphagous rotifers and small-sized crustaceans dominated, while oligotrophy and high ion concentrations favored dominance of large microphagous and stationary/suspended feeders. In turn, the depth gradient of a newly emerging, stratified lake resulted in taxonomic and functional heterogeneity of zooplankton. Our results complement existing knowledge about zooplankton in post-industrial areas, and also provide new information on the mechanisms of formation and functioning of mine pit lake ecosystems.

Seasonal dynamics of zooplankton communities in interconnected tropical swamp lake ecosystems

2005 ◽  
Vol 29 (1) ◽  
pp. 179-184
Author(s):  
Sulmin Gumiri ◽  
Ardianor ◽  
Linda Wulandari ◽  
Tariono Buchar ◽  
Toshio Iwakuma
Keyword(s):  
Seasonal Dynamics ◽  
Lake Ecosystems ◽  
Zooplankton Communities

scholarly journals Outline of the development of research on the impact of Neolithic settlements on the transformation on loess landscapes in southern Poland

2020 ◽  
Vol 8 (2) ◽  
pp. 32-44 ◽  
Author(s):  
Kamila Ryzner ◽  
Piotr Owczarek
Keyword(s):  
Environmental Changes ◽  
Anthropogenic Factors ◽  
Functional Responses ◽  
Natural Systems ◽  
River Terraces ◽  
Current State ◽  
History Of ◽  
Response To Water ◽  
Landscape Transformations ◽  
The Impact

AbstractDuring the last few decades, many case studies have focused on landscape transformations in response to water erosion, human impact, and climate changes. This article presents a review and comparison of the current state of knowledge on conducted research on the impact of the activities of early humans on the relief and forms of loess areas in Poland based on the results of a variety of dating methods (OSL, TL, C14, 137Cs, palynology, dendrochronology etc.). The influence of land-use activity since the first permanent settlements (8,000–5,200 BP) played a major role in the development of certain sand sediment terrain forms: gullies, river terraces, the filling of isolated depressions and alluvial fans in the loess areas. As a result, a simplified scheme of landscape evolution was created along with a map of the most investigated areas by authors. The main problem was to differentiate the influence of anthropogenic factors from natural ones occurring either simultaneously or alternatively. The developed deposits form a geo-archive which has recorded the history of environmental changes. A detailed analysis of the sedimentary structures provides the possibility to reconstruct and understand past functional responses in natural systems. It is important to consider the impact of climate change and human influence over the course of history on a specific geomorphological system. This can help to predict future land changes and likely hazards.

scholarly journals On the parameterization of phytoplankton primary production in water ecosystem models

2021 ◽  
Vol 2131 (3) ◽  
pp. 032079
Author(s):  
S Golosov ◽  
I Zverev ◽  
A Terzhevik ◽  
N Palshin ◽  
G Zdorovennova ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Trophic Status ◽  
Calculated Data ◽  
Total Solar Radiation ◽  
Atmospheric Conditions ◽  
Ecosystem Models ◽  
Phytoplankton Primary Production ◽  
Lake Ecosystems ◽  
Water Ecosystem ◽  
Best Fit

Abstract Parametrization of the formation of organic matter in ecological models is traditionally carried out by using the dependence of the Michaelis – Menten – Monod type [Monod, 1942], which describes the growth rate of algal biomass depending on the factor limiting their development. One of the biggest drawbacks of these dependences is the presence of empirical parameters in them, which in a complex way depend on environmental factors and are an individual characteristic of various types of algae. These parameters in the models actually become fitting coefficients that provide the best fit between observational data and modeling results, which does not allow for effective diagnostics and forecasting of the state of aquatic ecosystems. In this work, on the basis of dimensional analysis, a parametrization was obtained that describes the photosynthesis of algae depending on the parameters relatively easily measured in natural conditions - total solar radiation, phytoplankton biomass, and water transparency. Parametrization has been verified according to observations on more than 30 different types of lakes located in different regions of the world. The calculated data are in satisfactory agreement with the data of field observations, both qualitatively and quantitatively. Discrepancies in field and calculated data may be due to the fact that the species composition of algae in lakes of different trophic status is not taken into account, which can lead to errors in assessing the efficiency of using solar radiation. Discrepancies may also be related to the total solar radiation, rather than photosynthetic active radiation, which varies in different geographic and atmospheric conditions. The proposed parametrization can be used in the development of mathematical models of lake ecosystems, as well as to determine the trophic status of poorly studied water bodies.

scholarly journals Short Communication: Zooplankton as indicator of trophic status of lakes in Ilmen State Reserve, Russia

2021 ◽  
Vol 22 (3) ◽  
Author(s):  
Irina V. Mashkova ◽  
Anastasiya Kostryukova ◽  
Elena Shchelkanova ◽  
Viktor Trofimenko
Keyword(s):  
Trophic Status ◽  
Short Communication ◽  
Ecological Status ◽  
Taxonomic Composition ◽  
Zooplankton Biomass ◽  
Taxonomic Structure ◽  
The Status ◽  
Ilmen State Reserve ◽  
Chelyabinsk Region ◽  
Zooplankton Communities

Abstract. Mashkova IV, Kostryukova AM, Shchelkanova EE, Trofimenko VV. 2021. Short Communication: Zooplankton as indicator of trophic status of lakes in Ilmen State Reserve, Russia. Biodiversitas 22: 1448-1455. Zooplankton is a potentially powerful tool for assessing the trophic state of aquatic ecosystems. The current paper studied taxonomic composition and biomass of zooplankton communities in ten lakes within Ilmen State Reserve, Chelyabinsk region, Russia and identified the influence of trophic status on its formation. Integrated samples were taken from epilimnion in the summer of 2016-2019. Several criteria were used to determine trophic status: the taxonomic structure and biomass of zooplankton; some hydroecological indicators some hydroecological indicators and the Carlson index. The trophic status of the studied lakes, determined based on the zooplankton biomass, revealed that most of the lakes were in the status of mesotrophic. The number of zooplankton species in the lakes was 44 with Pleuroxus laevis, Bosmina longirostris, Simocephalus vetulus were the most numerous species in mesotrophic lakes; while Chaetonotus ploenensis, Keratella quadrata frenzeli, Leptodora kindti are rare. Zooplankton communities of Bolshoye Miassovo and Maloye Miassovo Lakes were characterized by high species diversity and considered as one of the most significant among the foothill lakes of the eastern slope of South Ural. The study reveals that hydroecological assessment of the ecological status is not exactly precise, as values are not stable and can change not only under the anthropogenic influence but also due to many natural abiotic environmental factors. The research shows that species composition and biomass of zooplankton communities could provide a more accurate assessment of the trophic status of water-bodies.

Assessment of trophic status long-term transformations in Rybinsk and Ivankovo reservoirs (diatom analysis)

2020 ◽  
pp. 26-32
Author(s):  
Lev V. Razumovsky
Keyword(s):  
Trophic Status ◽  
Environmental Changes ◽  
Water Area ◽  
Anthropogenic Factors ◽  
Species Structure ◽  
Layer By Layer ◽  
Integrated Monitoring ◽  
Available Information ◽  
Diatom Complexes

The studies were conducted under the integrated monitoring of the Rybinsk and Ivankovo reservoirs. The work is devoted to the assessment of long-term environmental changes under the influence of natural and anthropogenic factors. It was suggested to combine the two traditional methods of analysis. Initially, diatom complexes from bottom sediments were analyzed layer by layer. Then the results obtained were compared with the available information database on the species composition of phytoplankton complexes. Information about phytoplankton was avalible as a result of biomonitoring of reservoirs. The possibility of carrying out the work was determined by the fact that monitoring in the water area of the Rybinsk and Ivankovsky reservoirs was carried out for several decades. It was proposed to assess the reliability and comparability of the results obtained in assessing changes in the trophic status of reservoirs. The saprobity index (S) was calculated for diatom complexes from sediments. The data obtained was compared with similar calculations for the species structure of phytoplankton complexes.

scholarly journals Assessment of the Trophic Status of the South Lagoon of Tunis (Tunisia, Mediterranean Sea): Geochemical and Statistical Approaches

2018 ◽  
Vol 2018 ◽  
pp. 1-17 ◽  
Author(s):  
Myriam Abidi ◽  
Rim Ben Amor ◽  
Moncef Gueddari
Keyword(s):  
Water Quality ◽  
Trophic Status ◽  
Nutrient Content ◽  
Water Quality Monitoring ◽  
Anthropogenic Factors ◽  
The South ◽  
Engineering Project ◽  
Multivariate Statistical ◽  
Status Assessment ◽  
High Level

The trophic status assessment of the South Lagoon of Tunis, a shallow Mediterranean coastal area after its restoration, is addressed herein with respect to its various environmental settings which are taken as indicators of water quality. The lagoon had, in the past, witnessed severe environmental quality issues. To resolve these problems, a large restoration project of the lagoon was undertaken which consisted of dredging the bottom sediments removing areas of water stagnation and improving water circulation. After this restoration work, the lagoon morphology has radically changed. In this paper, we attempt to evaluate the lagoon water’s trophic state to analyze the eutrophication risk after almost 16 years. In order to achieve these purposes, two water quality monitoring campaigns were conducted (July 2013 and February 2014). Natural and anthropogenic factors controlling the nutrient content of the lagoon water have been assessed through both geochemical methods and multivariate statistical tools. The results show that the nutrients are from external sources due to the discharge of municipal and industrial wastewater from the surrounding city of the catchment in the lagoon’s south side. According to the TRIX index, the lagoon remains eutrophic presenting a “poor” water quality, notwithstanding the engineering project due to the high level of nutrients.

Floods control the influence of environmental gradients on the diversity of zooplankton communities in a neotropical floodplain

2013 ◽  
Vol 75 (4) ◽  
pp. 607-617 ◽  
Author(s):  
Nadson Ressyé Simões ◽  
Juliana Déo Dias ◽  
Clarice Maria Leal ◽  
Louizi de Souza Magalhães Braghin ◽  
Fábio Amodêo Lansac-Tôha ◽  
...  
Keyword(s):  
Environmental Gradients ◽  
Neotropical Floodplain ◽  
Zooplankton Communities

Zooplankton communities are good indicators of potential impacts of Athabasca oil sands operations on downwind boreal lakes

2014 ◽  
Vol 71 (5) ◽  
pp. 719-732 ◽  
Author(s):  
M.U. Mohamed Anas ◽  
Kenneth A. Scott ◽  
Ryan N. Cooper ◽  
Björn Wissel
Keyword(s):  
Oil Sands ◽  
Environmental Changes ◽  
Environmental Gradients ◽  
Variation Partitioning ◽  
Geographic Region ◽  
Boreal Lakes ◽  
Athabasca Oil Sands ◽  
Athabasca Oil Sands Region ◽  
Acid Base Status ◽  
Zooplankton Communities

We used zooplankton communities as indicators to evaluate the potential influence of acidifying–eutrophying emissions from the Athabasca oil sands region (AOSR) on 244 downwind lakes in northwest Saskatchewan. The impacts of regional environmental change on zooplankton communities are determined by responses of resident species to altered local environmental conditions as well as changes in composition due to dispersal processes. To test and quantify the relative importance of these individual processes, we conducted ordination analyses, spatial modeling, and variation partitioning. Local environmental factors were the dominant determinants of community structure, including two major environmental gradients susceptible to atmospheric emissions (i.e., acid–base status and productivity). Spatial structuring of these factors induced similar spatial structures in zooplankton distribution across the region. However, disentangling any impacts of the AOSR on these environment–spatial–species relationships from the underlying natural variability was precluded by unavailability of baseline data. Nevertheless, as our findings indicate that dispersal of zooplankton was not strongly limiting across this broad geographic region, zooplankton indicators can be crucial to detect future environmental changes in lakes across northwest Saskatchewan.

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