Drivers of macrophyte development in rivers in an agricultural area: indicative species reactions

2012 ◽  
Vol 7 (4) ◽  
pp. 731-740 ◽  
Author(s):  
Iga Lewin ◽  
Krzysztof Szoszkiewicz
Keyword(s):  
Aquatic Plant ◽  
Ecological Status ◽  
Biological Data ◽  
Agricultural Area ◽  
Nutrient Concentrations ◽  
Chemical Parameters ◽  
Canonical Ordination ◽  
High Concentrations ◽  
Physical And Chemical ◽  
Macrophyte Index

AbstractThe ecological drivers of macrophyte development in a lowland agricultural area were tested based on a 2008 survey on the Wkra River catchment. Our survey was carried out in the rivers of an agricultural area with relatively high concentrations of both nitrates and phosphates in the water. By using the Polish macrophyte method, we were able to calculate several botanical metrics. Canonical ordination analyses used to relate biological data to environmental variables such as physical and chemical parameters of water, surface water velocity or river width, were carried out using CANOCO for Windows. Redundancy analysis (RDA) showed that pH and alkalinity were the parameters best correlated with the distribution of macrophytes and values of macrophyte indices. The recorded values of the Macrophyte Index for River in the Wkra River and its tributaries reflected their good and moderate ecological status (the Water Framework Directive scale). Despite the fact that nutrient concentrations in the water were relatively high and that most of the sites represented eutrophic conditions, the results of this survey showed that non-nutrient parameters may play an important role in explaining aquatic plant occurrence in rivers that have been subjected to eutrophication.

scholarly journals Screening of Epiphytic Algae on the Aquatic Plant Phragmites australis inhabiting Tigris River in Al-Jadria Site, Baghdad, Iraq

2017 ◽  
Vol 14 (1) ◽  
pp. 85-98
Author(s):  
Baghdad Science Journal
Keyword(s):  
Aquatic Plant ◽  
New Records ◽  
Total Hardness ◽  
Plant Nutrient ◽  
Chemical Parameters ◽  
Epiphytic Algae ◽  
Tigris River ◽  
Calcium Magnesium ◽  
Physical And Chemical ◽  
Different Parts

The present work included qualitative study of epiphytic algae on dead and living stems, leaves of the aquatic plant Phragmitesaustralis Trin ex Stand, in Tigris River in AL- Jadria Site in Baghdad during Autumn 2014, Winter 2015, Spring 2015, and Summer 2015. The physical and chemical parameters of River’s water were studied (water temperature, pH, electric conductivity, Salinity, TSS, TDS, turbidity, light intensity, dissolve oxygen, BOD5, alkalinity, total hardness, calcium, magnesium and plant nutrient). A total of 142 isolates of epiphytic algae were identified. Diatoms were dominant by 117 isolates followed by Cyanobacteria (13isolates), Chlorophyta (11 isolates) and Rhodophyta (1 isolate), Variations in the isolates number were recorded on different parts of macrophyte host as well as, indifferent seasons. Eight new algal isolates (Achnanthesexigue var. heterovalvata Krasske, Navicula exilissima Grunow, Navicula falaisiensis var lanceola Grunow, Navicula microcephalo Grunow, Pleurosigma obscurum W. Smith, Stauroneis amphioxys var. amphioxys Gregory, Stenopterobia intermedia Lewis and Audouinella hermannii Roth).were identified as new records.

scholarly journals Cladocera remains and vegetation types to assess the state of oxbows

2018 ◽  
Vol 29 ◽  
pp. 27-39
Author(s):  
István Gyulai ◽  
Csilla Lakatos ◽  
János Tamás Kundrát ◽  
Zsuzsanna Balogh ◽  
Edina Simon ◽  
...  
Keyword(s):  
Surface Sediment ◽  
Ecological Status ◽  
Open Water ◽  
Vegetation Types ◽  
Freshwater Lakes ◽  
Chemical Parameters ◽  
Habitat Types ◽  
Cladocera Remains ◽  
Significant Difference ◽  
Physical And Chemical

We assessed the usefulness of Cladocera remains for establishing the ecological status of oxbows and also tested the association of Cladocera species with various vegetation types. Cladocera remains were collected from the surface sediment of four habitat types (tangled vegetation, open water, reeds and tunnels) and 15 physical and chemical parameters of surface water were studied. In the surface sediment samples, we identified 32 Cladocera taxa. There was a significant difference in the number of species amongst habitat types as per ANOVA. The benthic and plant associated Cladocera communities of reeds, tangled vegetation, open water and tunnels were clearly separated from each other by NMDS ordination. CCA showed that habitat types had characteristic Cladocera species: Pleuroxus species were frequent in the tangled vegetation habitat, while Chydorus species were frequent in the open water. Remarkably, in reeds, Bosmina species were frequent, although these species are usually common in open water. Specimens of the Alona genus were found everywhere. Our findings suggest that the remains of Cladocera species may be useful indicators to assess and monitor the structure of freshwater lakes.

scholarly journals Research into ecological status and the degree of heavy metal concentration in the waters of the Drenica river (Kosovo)

2021 ◽  
pp. 89-95
Author(s):  
M Sadiku ◽  
S Kadriu ◽  
M Kelmendi ◽  
D Ibishi
Keyword(s):  
Heavy Metals ◽  
Ecological Status ◽  
Heavy Metal Concentration ◽  
Atomic Absorption Spectrophotometry ◽  
River Pollution ◽  
Chemical Parameters ◽  
Lignite Mining ◽  
Additional Information ◽  
Physical And Chemical ◽  
The Impact

Purpose. To reflect the impact of discharge waters from the ferronickel smelter and surface lignite mining on the pollution of the Drenica River with heavy metals. According to our estimation, the effect of mining on the river pollution is undeniable. Methodology. The standard methods ISO 5667-6, ISO 5667-11, and ISO 5667-1.3 were used to determine the physical and chemical parameters of the Drenica River surface water. The EPA-3015A method was applied for sample preparation, while the AAS (Atomic Absorption Spectrophotometry) measurement technique was used to determine the concentration of heavy metals. Standard ISO methods were applied for determining the following parameters: pH, DO, BOD5, COD, NNH4, NO3-, TN, PO4P, and TP. Findings. From the obtained results, it can be concluded that the levels of heavy metals in the river Drenica have exceeded the allowed values as a result of industrial activities. Originality. The paper supplies new additional information on the ecological status of the Drenica River, based on samples taken along the river, especially where the greatest impact of the ferronickel smelter and surface lignite mining could be. The problematic of this research is quite contemporary; river pollution affects the life chain. Practical value. We believe that the content and problems in the focus of the research are topical and present significant interest to all those who deal with environmental issues.

scholarly journals The quality of water of the Mantovo reservoir, Republic of Macedonia

2009 ◽  
Vol 61 (3) ◽  
pp. 501-512 ◽  
Author(s):  
Valentina Slavevska-Stamenkovic ◽  
T. Stafilov ◽  
S. Smiljkov ◽  
M. Paunovic ◽  
S. Hristovski
Keyword(s):  
Organic Pollution ◽  
Nutrient Concentrations ◽  
Chemical Parameters ◽  
Limnodrilus Hoffmeisteri ◽  
Quality Of Water ◽  
Environmental Status ◽  
Physico Chemical ◽  
High Concentrations ◽  
Very High

The aim of the paper is to evaluate the quality of water of the Mantovo Reservoir (Southeast Macedonia)based on physico-chemical parameters and the macrozoobenthos. Monthly sampling was performed during 2003 and 2004. Temperature and DO depth profile data indicate that the Mantovo Reservoir is a dimictic lake. Based on mean nutrient concentrations, the Mantovo Reservoir can be considered as being phosphorus-deficient. During the summer stratification, very high concentrations of Mn (2,819 ?g/l)and Cu (147.6?g/l)were detected in the lower profundal. Limnodrilus hoffmeisteri was the dominant species, which indicates the presence of organic pollution. Dominance of Chaoborus crystallinus and decline in abundance of L. hoffmeisteri in the lower profundal indicate a deterioration of environmental status in the deepest part of the lake.

scholarly journals A Touristic Concept of Land Management of Zaklików’s Reservoir Based on its Natural Values (South-Eastern Poland)

2016 ◽  
Vol 18 (2) ◽  
pp. 81-98
Author(s):  
Joanna Sender ◽  
Weronika Maślanko ◽  
Milena Kuk
Keyword(s):  
Local Development ◽  
Ecological Status ◽  
Water Reservoir ◽  
Social Needs ◽  
Chemical Parameters ◽  
Nature Protection ◽  
The North ◽  
North Eastern ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical

Abstract The aim of the study was to determine actions towards enrichment of natural aspects of the water reservoir in Zaklików, with consideration of nature protection and social needs. For this purpose, physical and chemical parameters of the reservoir, floristic and physiognomic characteristics of the area, cartographic analysis of land use, natural and touristic valorisation, and the concept of tourism development of the area were considered. The reservoir, based on the ESMI index, rated as moderate ecological status. The highest natural and tourist values, as well as the highest intensity of conflict between them, were located in the north-eastern and central part of the study area. Based on all analyzes, a concept of development of the study area was created, consistent with the local development plan.

scholarly journals Limnology of shallow lakes of the semi-arid Central Pampa of Argentina

2019 ◽  
Vol 31 ◽  
Author(s):  
Santiago Andrés Echaniz ◽  
Alicia María Vignatti
Keyword(s):  
Chlorophyll A ◽  
Fish Fauna ◽  
Chemical Diversity ◽  
Nutrient Concentrations ◽  
Urban Sewage ◽  
Low Salinity ◽  
Low Concentrations ◽  
High Concentrations ◽  
Physical And Chemical

Abstract Aim The Central Pampa of Argentina has three recognized phytogeographic regions that arise due to the decrease in rainfall towards the west. The area has numerous lakes that are mainly temporary, with hydroperiods that relate to climatic cycles, although some of them have changed due to anthropogenic influence. Some of these lakes have been studied with special reference to zooplankton, but information on their physical and chemical aspects is scarce. Consequently, managing and evaluating the anthropogenic effects on these ecosystems is challenging. The objective of this study was to explore the limnological characteristics of lakes in different regions in the Central Pampa that experience different anthropic influences. Methods Ten lakes were sampled seasonally (January, April, July, and October) during 2007. In situ measurements included transparency, pH, temperature, and dissolved oxygen concentration, and 2-L water samples were collected to determine salinity, ion composition, suspended solids, nutrient concentration, and phytoplankton chlorophyll- a concentration. Results Salinity ranged from 0.32-136.72 g L-1, with Na+ being the dominant ion in nine lakes and Cl- and HCO3- predominating in the higher- and lower-salinity lakes respectively. Nutrient concentrations were high (total Kjeldahl nitrogen: 7.97-34.69 mg L-1; total phosphorous: 4.07-14.82 mg L-1), and all lakes were hypertrophic. We determined three lake classes: i) lakes transformed from low-salinity lakes into hypersaline ones through human inactivation of the fluvial system that fed it; ii) mesosaline temporary lakes lacking fish, with low concentrations of chlorophyll-a and influenced by agricultural activities, and iii) subsaline and hyposaline lakes, highly modified by urban sewage, converted in permanent lakes (which allowed fish fauna development) and with reduced water transparency (due to high concentrations of phytoplankton chlorophyll-a). Conclusions The chemical diversity of the studied lakes is low, and their predominance of Na+ and Cl- indicated that evaporation and crystallization control the water chemistry. Additionally, this study showed the consequences of the anthropic impact, which alter water chemical composition, trophic structure and, thus, the ecological characteristics of lakes.

scholarly journals Interacting environmental factors associated with the incidence of Hypoxylon canker on trembling aspen

1980 ◽  
Vol 10 (1) ◽  
pp. 17-24 ◽  
Author(s):  
Robert I. Bruck ◽  
Paul D. Manion
Keyword(s):  
Soil Depth ◽  
Rooting Depth ◽  
Nutrient Concentrations ◽  
Trembling Aspen ◽  
Chemical Parameters ◽  
Tissue Concentrations ◽  
Positive Correlations ◽  
Natural Stands ◽  
Physical And Chemical ◽  
Cover Density

Twenty-three natural stands of trembling aspen (Populustremuloides Michx.) were surveyed for incidence of a canker caused by Hypoxylonmammatum (Wahl.) Miller. Canker incidence ranged from 0 to 70%. Horizonal soil samples were analyzed for their chemical and physical properties, and aspen leaf lamina tissue was analyzed for nutrient concentrations. A model accounting for 92% of the variation in canker incidence was constructed, utilizing 56 measured parameters, through the use of simple- and multi-correlation statistical analyses. Highly significant negative correlations were observed between canker frequency and each of aspen cover density, soil moisture, abundance of soil mottles, soil consistence, exchangeable soil Mn, Ca, and Na, and aspen tissue concentrations of Mn, Ca, and Na. Positive correlations were observed between canker incidence and each of soil temperature, soil depth, bulk density, rooting depth, and soil fractions over 2 and 10 mm. The association between exchangeable soil nutrients and aspen tissue concentrations was highly significant (p = 0.01). It is concluded that physical and chemical parameters of the soil which related most directly to moisture comprise a system of variables which are highly related to Hypoxylon canker incidence in trembling aspen.

scholarly journals Potentially harmful microalgae and algal blooms in a eutrophic estuary in Turkey

2015 ◽  
Vol 16 (2) ◽  
pp. 432 ◽  
Author(s):  
S. TAS ◽  
I.N. YILMAZ
Keyword(s):  
Algal Blooms ◽  
Nutrient Concentrations ◽  
Sea Of Marmara ◽  
Phytoplankton Composition ◽  
Chemical Parameters ◽  
Risk Area ◽  
Golden Horn ◽  
Harmful Microalgae ◽  
Physical And Chemical ◽  
Harmful Species

Distribution of potentially harmful microalgae and algal blooms were investigated at monthly and weekly time scales between October 2009 and September 2010 in the Golden Horn, a eutrophic estuary in the Sea of Marmara (Turkey). Several physical and chemical parameters were analysed together with phytoplankton composition and abundance. A total number of 23 potentially harmful and/or bloom-forming microalgae (14 dinoflagellates, 4 diatoms and 5 phytoflagellates) were identified throughout this study period, of which nine taxa have been confirmed to be toxic elsewhere in the world. Most harmful species and algal blooms were observed in late spring and summer particularly in the middle and upper estuaries, and nine taxa formed dense and successive algal blooms causing water discoloration. Nutrient concentrations increased significantly from the lower to the upper estuary. Additionally, high organic matter loads in the upper estuary could also have benefited by mixotrophic species. The increasing number of potentially harmful and bloom-forming species and algal blooms indicated that the GHE is a potential risk area for future HABs. 

The influence of the ecohydrological rehabilitation in the cascade of Arturówek reservoirs in Łódź (Central Poland) on the cyanobacterial and algae blooming

2015 ◽  
Vol 44 (2) ◽  
Author(s):  
Bogusław Szulc ◽  
Tomasz Jurczak ◽  
Katarzyna Szulc ◽  
Zbigniew Kaczkowski
Keyword(s):  
Great Influence ◽  
Ecological Status ◽  
Cyanobacterial Blooms ◽  
Chemical Parameters ◽  
Vegetation Zones ◽  
Quality Of Water ◽  
Surrounding Areas ◽  
Cyanobacteria And Algae ◽  
Physical And Chemical

AbstractThe objective of the studies included a complex of three reservoirs (upper, middle and lower Arturówek) which play an important recreational role for the residents of the Łódź city and the surrounding areas. The reservoirs were constructed on the Bzura River and are located in the area of the Łódź Hills Landscape Park. The river, the ecological status of which was defined as moderate, has a great influence on the quality of water in the Arturówek reservoirs. A total of 36 planktonic samples were collected in 2011-2013 during spring, summer and autumn seasons. During the studies, the selected physical and chemical parameters were measured. In addition to taxonomic analysis of Cyanobacteria and algae, the analyses of abundance and biomass of phytoplankton and the concentration of microcystins in water were conducted. In 2013, ecohydrological rehabilitation of the Arturówek reservoirs was carried out. Investment works included: removal of the bottom sediments to reduce internal loads, construction of buffer vegetation zones (ecotones) and sedimentation-biofiltration systems to reduce the amounts of pollutants flowing into reservoirs with rainwater. Significant changes in the structure of phytoplankton were observed in 2013. Every year, the disappearance of Cyanobacterial blooms was observed in favor of an increasing contribution of algae.

scholarly journals The Diversity of Caddisflies (Insecta, Trichoptera) Species in TimiȘ River Catchment Area (Western Romania)

2013 ◽  
Vol 15 (3) ◽  
pp. 133-144
Author(s):  
Mălina Pârvu ◽  
Lucian Pârvulescu
Keyword(s):  
Ecological Status ◽  
Chemical Parameters ◽  
Catchment Basin ◽  
Numerical Abundance ◽  
Caddisfly Larvae ◽  
Chemical Factors ◽  
Bodies Of Water ◽  
Physical And Chemical ◽  
Water Catchment ◽  
Western Romania

ABSTRACT In order to determine the benthic macro invertebrates communities role as bioindicators, researchers worldwide carried out analyses into the structure, dynamics and diversity of the different groups as well as into the physical-chemical factors. A total of twenty one species of caddisfly larvae were identified in the study. Numerical abundance, frequency and diversity values recorded for the caddisfly species varied according to the physicalchemical conditions specific to each sample collecting station. The physical and chemical parameters monitored in Timiș River water catchment basin have corresponded with the limits of the Ministry of Environment and Water Management (MEWA) Order 161/2006, which states the ecological status of surface bodies of water with, few exceptions being identified.

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