scholarly journals Cyanobacteria and cyanotoxins in Polish freshwater bodies

2013 ◽  
Vol 42 (4) ◽  
Author(s):  
Justyna Kobos ◽  
Agata Błaszczyk ◽  
Natalia Hohlfeld ◽  
Anna Toruńska-Sitarz ◽  
Anna Krakowiak ◽  
...  
Keyword(s):  
Fresh Water ◽  
Geographical Distribution ◽  
General Pattern ◽  
Water Bodies ◽  
Published Data ◽  
Total Water ◽  
Freshwater Bodies ◽  
Distribution Frequency

AbstractIn this work, the authors examined the presence of cyanobacteria and cyanotoxins in 21 samples collected from fresh water bodies located in 5 provinces in Poland: Lublin (2), Podlasie (1), Pomerania (6), Warmia-Masuria (1) and Wielkopolska (11). In addition, to determine the general pattern of geographical distribution, frequency of cyanobacteria occurrence, and cyanotoxins production, the published data from 238 fresh water bodies in Poland were reviewed. On the basis of these collected results, we concluded that Planktothrix, Aphanizomenon, Microcystis and Dolichospermum were dominant. The general pattern in geographical distribution of the identified cyanobacterial genera was typical of other eutrophic waters in Europe. The production of cyanotoxins was revealed in 18 (86%) of the 21 samples analyzed in the present work and in 74 (75%) of the 98 total water bodies for which the presence of toxins had been examined. Among the 24 detected microcystin variants, [Asp3]MC-RR was most common. These results can be verified when more data from the less explored water bodies in the southern and eastern parts of Poland are available.

Monitoring of the droughts consequence by high resolution satellite images

2016 ◽  
Vol 27 (1-2) ◽  
pp. 89-95
Author(s):  
D. K. Mozgovoy
Keyword(s):  
High Resolution ◽  
Water Level ◽  
Fresh Water ◽  
Water Consumption ◽  
Satellite Images ◽  
Agricultural Land ◽  
Water Bodies ◽  
Private Companies ◽  
High Resolution Satellite Images ◽  
Freshwater Bodies

The State of California is one of the least abundant with fresh water in the United States, while having high water consumption – the drought in the state has reached catastrophic proportions. January 2015 was the driest month in California for the whole period of observations since 1895. Two thirds of the state's population depend on the centralized water supply – about 25 million people and more than 400 thousand hectares of agricultural land. The level of ground waters and the snow cover have become record low – this can be explained by pumping groundwater out for irrigation of agricultural land. The water level in the reservoirs of California is close to the critical notch. State authorities are forced to tighten measures to save water, the supply of which is sometimes insufficient to satisfy the priority needs of citizens. The solution of the problem of rational use and protection of water resources can only be based on an integrated systemic approach to the study of spatial and temporal patterns of natural and anthropogenic factors on the quality and quantity of surface water with the use of satellite and ground data. In the study of the water regime of land one of the most important input parameters of hydrological models is the surface area of the reservoirs. Regular receiving of information about this parameter with the use of ground data is challenging and labor intensive. Using satellite data can greatly simplify this task and accomplish it with shorter latent periods, more frequently and at lower costs. The results of satellite monitoring of certain areas of California shown to assess the impact of the drought in 2011–2015 on the large freshwater bodies, based on high resolution satellite images. To quantify the effects of drought in 2011–2015 on selected large freshwater bodies (Lake Folsom and Lake Oroville) processing of multispectral images was performed. Changes of Lake Oroville in 2011–2015 according to high resolution satellite images was detected. The shift of the coastline near Foreman Creek amounted to 2.5 km. The shift of the coastline near Lampkin Road amounted to over 1.2 km. Changes of Lake Folsom in 2011–2015 according to the high resolution satellite images was detected. The shift of the coastline near the Beal's Point made 1.2 km. The shift of the coastline near Peninsula Campground made over 3.4 km. Large-scale consequences of drought shown for lakes Oroville and Folsom are also typical for other fresh water bodies of California, the majority of which have the status of water reservoirs, and also for water bodies of other US states. For instance, Lake Mead covering 90 % of water requirements of Las Vegas has the water level by 145 feet below normal. It is expected that this level will go down by another 20 feet by June, 2015. This is not only about water, but also about electricity supply – dams of hydropower plants are almost dry. Therefore, in the recent years an acute necessity has appeared for creation of a web-service for regular space monitoring of fresh water bodies – now this has become possible owing to availability of satellite images and modern technologies of their processing. The users of such a service may be: – state regulating structures (water supplying enterprises, forest, environment, agricultural services and so on); – state and private companies of water transport (unbiased evaluation of the consequences of the drought for fresh water navigation); – tourist companies (monitoring of recreational territories); – municipal services, private companies, farmers (carrying out measures for minimizing water consumption); – TV and radio companies and other mass media (propaganda of rational water use); – population living near territories affected by the drought (obtaining of unbiased and reliable information as for the scale and severity of the consequences of the drought). 

ASSESSMENT OF AQUATIC ECOSYSTEM STATUS USING MACROPHYTE SPECIES AS KEY TOOLS INDICATOR FOR HEAVY METAL POLLUTION

2015 ◽  
Vol 77 (30) ◽  
Author(s):  
Rashidi Othman ◽  
Ruhul Izzati Shaharuddin ◽  
Zainul Mukrim Baharuddin ◽  
Khairusy Syakirin Has-Yun Hashim ◽  
Mohd Shah Irani Hasni
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Fresh Water ◽  
Plant Species ◽  
Aquatic Plants ◽  
Water Samples ◽  
Aquatic Plant ◽  
Water Bodies ◽  
Macrophyte Species ◽  
Freshwater Bodies

Aquatic plants or macrophytes are beneficial to fresh water bodies because they produce oxygen, which assists with overall fresh water bodies functioning, and provide food and shelter for aquatic living organisms. A lack of aquatic plants in a freshwater bodies system where they are expected to occur may suggest a reduced population of macro and micro fauna. In addition, the absence of macrophytes may also indicate water quality problems as a result of excessive turbidity, herbicides, or salinization. However, an over abundance of macrophytes can result from high nutrient levels and may interfere with freshwater bodies processing, recreational activities and detract from the aesthetic appeal of the system. In this study, sixteen water samples were collected from four different places (Selangor, Perak, Pahang and Kelantan) where six different macrophytes species were abundance and dominant. All the water samples were analyzed by using Atomic absorption spectroscopy (AAS) for six types of heavy metals which are iron (Fe), lead (Pb), copper (Cu), zinc (Zn), nickel (Ni) and manganese (Mn). All six different macrophytes species which are Eichhorniacrassipes, Hydrillaverticillata, Cabombafuscata, Salvinianatans, Nelumbonuciferaand Pistiastratiotesexhibiting highly significant differences (P< 0.0001) between aquatic plant species widespread, locations and the heavy metals content. This clearly demonstrates that freshwater environment with abundance of invasive macrophyte species can have an important influence and indication on the accumulation of heavy metals content. The importance of the interaction components emphasises that the changes in heavy metals composition are complex and the responses are not consistent across all aquatic plant species. Examination of the summarised data revealed that, of the 6 macrophyte species analysed at all different locations, all exhibits as potential ecological indicator for unhealthy aquatic ecosystems or as phytoindicator for heavy metal contaminants either at low or high level contamination. Therefore, macrophyte is an effective tool in responding heavy metal in low level environmental contamination that might otherwise be difficult to detect.

Problems of species and the features of geographical distribution in colonial volvocine algae (Chlorophyta)

2020 ◽  
Vol 54 (2) ◽  
pp. 299-311
Author(s):  
A. G. Desnitskiy
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
World Literature ◽  
The Other ◽  
Disjunct Distribution ◽  
Published Data ◽  
Species Problem ◽  
Comprehensive Review ◽  
Volvocine Algae ◽  
Cryptic Taxa

More than ten new species of colonial volvocine algae were described in world literature during recent years. In present review, the published data on taxonomy, geographical distribution and the species problem in this group of algae, mainly from the genera Gonium, Pandorina, Eudorina, and Volvox, are critically discussed. There are both cosmopolitan volvocalean species and species with local or disjunct distribution. On the other hand, the description of new cryptic taxa in some genera of the colonial family Volvocaceae, such as Pandorina and Volvox, complicates the preparation of a comprehensive review on their geography.

An annotated checklist of the main representatives of meiobenthos from inland water bodies of Central and Southern Vietnam. I. Roundworms (Nematoda)

Zootaxa ◽  
2017 ◽  
Vol 4300 (1) ◽  
pp. 1 ◽  
Author(s):  
VLADIMIR A. GUSAKOV ◽  
VLADIMIR G. GAGARIN
Keyword(s):  
Taxonomic Composition ◽  
Published Data ◽  
Southern Vietnam ◽  
Annotated List ◽  
Freshwater Bodies ◽  
Freshwater Habitats ◽  
Inland Water Bodies ◽  
Bodies Of Water ◽  
Global And Local ◽  
Annotated Checklist

This paper presents an annotated list of nematode taxa found in the course of investigations of meiobenthic communities in various freshwater bodies in central and southern Vietnam. Data on the structure and abundance of populations, ecology, and global and local distribution are given along with taxonomic and other comments. The occurrence and level of taxonomic richness of roundworms in the studied bodies of water and biotopes are discussed briefly. In total, 127 taxa of 10 orders and 38 families of nematodes are listed. The number of recorded genera is 60; 72 representatives of these genera are identified to species level. The listing includes 48 taxa that had not been previously recorded from Vietnamese territory and 17 species originally collected, analyzed, and described as new to science from this country. The results of these investigations and an overview of the previously published data indicate that taxonomic composition and diversity of Nematoda in Vietnamese freshwater habitats remain poorly studied, except for certain areas. 

Water Hyacinth

2015 ◽  
pp. 343-361
Author(s):  
Never Mujere
Keyword(s):  
Fresh Water ◽  
Natural Enemies ◽  
Water Hyacinth ◽  
Amazon Basin ◽  
Cost Effective ◽  
Environmental Problems ◽  
Water Bodies ◽  
Aquatic Weed ◽  
Tropical Waters ◽  
Agricultural Household

This paper is a review of literature of water hyacinth (Eichhornia crassipes); what it is, why it is of scientific importance, problems it causes, how it can be controlled, and how it can be a source of livelihoods. The review has shown that water hyacinth is native to the Amazon Basin and one of the world's most noxious aquatic weed. Lack of natural enemies together with nutrient enriched water bodies facilitate the spread of water hyacinth in temperate, tropical and sub-tropical waters. The weed causes a variety of socio-economic and environmental problems when its rapid mat-like proliferation covers areas of fresh water. With regards to its control, the mechanical method is the most cost-effective, followed by the biological, manual and chemical methods. Regardless of its problems, water hyacinth has been found to be useful for industrial, agricultural, household and environmental purposes.

scholarly journals Physalaemus cicada Bokermann, 1966 (Anura: Leiuperidae): distribution extension

Check List ◽  
2012 ◽  
Vol 8 (4) ◽  
pp. 630 ◽  
Author(s):  
Ronildo Alves Benício ◽  
Guilherme Ramos Da Silva ◽  
Mariluce Gonçalves Fonseca
Keyword(s):  
South America ◽  
Geographical Distribution ◽  
First Record ◽  
Water Bodies ◽  
Temporary Water Bodies ◽  
Temporary Water

The genus Physalaemus is widely distributed over South America, east of Andes. Physalaemus cicada belongs to the Physalaemus cuvieri group, is widely distributed over the Caatinga and is usually found in lentic and/or temporary water bodies. Herein, we extend its geographical distribution providing the first record of Physalaemus cicada for Piauí state, in the municipality of Picos.

scholarly journals The study of the suitability for use in agriculture of sludge and hydrochemical indicators of water in the reservoirs of the fish farm LLC “Albashi”

2020 ◽  
Vol 175 ◽  
pp. 02001
Author(s):  
Natalya Yurina ◽  
Denis Yurin ◽  
Irina Astakhova ◽  
Tatyana Shcherbatova ◽  
Igor Shcherbatov
Keyword(s):  
Bottom Sediment ◽  
Fresh Water ◽  
Bottom Sediments ◽  
Suspended Matter ◽  
Agricultural Production ◽  
Water Bodies ◽  
Hydrochemical Regime ◽  
Bottom Deposits ◽  
Environmentally Safe ◽  
Reservoir Type

The study of suitability for the use in agriculture of sludge deposits and hydrochemical indices of water bodies of fish-growing enterprise of LLC “Albashi” were carried out. It is an enterprise engaged in breeding and growing pond fish and sturgeon in pools and gardens, crayfish, growing aquapon greens. Fresh water bodies of reservoir type LLC “Albashi” contain a large number of bottom deposits. The layer of sludge deposits on the bottom in places reaches the power of 2-5 meters, and the underground power is difficult. Bottom sediments were taken from a depth of 1.0-1.2 m from the surface. The hydrochemical regime of the studied water bodies fully corresponds to the cultivation of aquaculture objects and hydroponic plants. Sufficient suspended matter in water (8.2 mg/dm3). The complete absence of dichlorodiphenyl trichloroethane, its metabolites and pesticides characterizes the products produced as environmentally safe. Consequently, bottom sediment site under study can be considered suitable for agricultural production.

scholarly journals Dynamics of Cyanobacteria and Related Environmental Drivers in Freshwater Bodies Affected by Mitten Crab Culturing: A Study of Lake Guchenghu, China

Water ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2468
Author(s):  
Hongmin Li ◽  
Huihui Chen ◽  
Xiaohong Gu ◽  
Zhigang Mao ◽  
Qingfei Zeng ◽  
...  
Keyword(s):  
Environmental Variables ◽  
Phytoplankton Biomass ◽  
Dominant Species ◽  
N:P Ratio ◽  
Water Bodies ◽  
Environmental Drivers ◽  
Mitten Crab ◽  
Total Phytoplankton ◽  
Freshwater Bodies ◽  
Harmful Species

Mitten crab aquaculture is prevalent in China, however, knowledge about the threat of cyanobacteria in mitten crab aquaculture-impacted water bodies is limited. Here, seasonal variations of cyanobacteria and their relationships with environmental factors were investigated for Lake Guchenghu area. Results suggested the changes of cyanobacteria community in crab ponds distinguished from the adjacent lake. In the lake, cyanobacterial biomass (3.86 mg/L, 34.6% of the total phytoplankton) was the highest in autumn with the dominance of Oscillatoria, Aphanocapsa and Pesudanabaena. By contrast, in crab ponds, cyanobacteria (46.80 mg/L, 97.2% of the total phytoplankton biomass) were the most abundant in summer when Pesudanabaena and Raphidiopsis were the dominant species. Of particular note was that obviously higher abundance of filamentous and potentially harmful species (e.g., Raphidiopsis raciborskii and Dolichospermum circinale) were observed in ponds compared to the lake. Specifically, water depth (WD), permanganate index (CODMn), total phosphorus (TP), N:P ratio, and NO 2 −-N were the key environmental variables affected cyanobacteria composition. For crab ponds, N:P ratio, water temperature (WT) and TP were the potential environmental drivers of cyanobacteria development. This study highlighted the fact that mitten crab culture had non-negligible influences on the cyanobacteria community and additional attention should be paid to the cyanobacteria dynamics in mitten crab culture-impacted water bodies, especially for those potentially harmful species.

Microcystins (hepatotoxic heptapeptides) in german fresh water bodies

1999 ◽  
Vol 14 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Jutta Fastner ◽  
Uwe Neumann ◽  
Birgit Wirsing ◽  
Jürgen Weckesser ◽  
Claudia Wiedner ◽  
...  
Keyword(s):  
Fresh Water ◽  
Water Bodies

scholarly journals The Water Footprint of Primary Cow–Calf Production: A Revised Bottom-Up Approach Applied on Different Breeds of Beef Cattle

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2325
Author(s):  
Frikkie Alberts Maré ◽  
Henry Jordaan ◽  
Mesfin Mergia Mekonnen
Keyword(s):  
Beef Cattle ◽  
Fresh Water ◽  
Production System ◽  
Water Footprint ◽  
Total Water ◽  
Top Down ◽  
Bottom Up ◽  
Animal Product ◽  
Water Users ◽  
True Representation

Beef has been identified as the farm animal product with the largest total water footprint in previous research, although various concerns have been raised regarding the top-down analyses approach followed in these studies. The objective of this study was to estimate the water footprint of weaned calves and culled cows from seven different beef breeds by applying a revised water footprint analyses approach. A bottom-up approach was followed to provide a true representation of the production system, and the water footprint of the production system, with the estimated water footprint for the system being allocated to weaned calves and culled cows according to the value factor of each. The results show that there are prominent differences between the seven breeds in terms of their respective water footprints per kilogram weaned calf, even though the total water footprint per herd for each breed revealed little variation between the breeds. There is a 45% difference between the breed with the lowest and the breed with the highest water footprint per kg calf. This knowledge can be applied by both water users (primary producers) and policy formulators to assist in the optimal use of fresh water for beef production.

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