Freshwater ecosystems

Ebook "Freshwater animal diversity assessment" gives a state of the art assessment of the diversity and distribution of Metazoa in the continental waters of the world. The project deals with all major animal groups plus the macrophytes, and encompasses the complete array of terrestrial aquatic ecosystems. It is the most comprehensive study of species- and genus-level diversity and chorology of the global freshwater fauna to date, and is the first to present comparable data on the different faunal groups concerned.

622p tachieuhoa 28-01-2024 7 2   Download

Ebook "Principles of terrestrial ecosystem ecology (Second edition)" regards living organisms, including people, and the elements of their environment as components of a single integrated system. The comprehensive coverage in this textbook examines the central processes at work in terrestrial ecosystems, including their freshwater components. It traces the flow of energy, water, carbon, and nutrients from their abiotic origins to their cycles through plants, animals, and decomposer organisms.

536p tachieuhoa 28-01-2024 5 2   Download

In ebook "Ecology of cyanobacteria II: Their diversity in space and time" cyanobacteria have existed for 3.5 billion years, yet they are still the most important photosynthetic organisms on the planet for cycling carbon and nitrogen. The ecosystems where they have key roles range from the warmer oceans to many Antarctic sites. They also include dense nuisance growths in nutrient-rich lakes and nitrogen-fixers which aid the fertility of rice-fields and many soils, especially the biological soil crusts of arid regions.

753p tachieuhoa 28-01-2024 4 2   Download

Part 1 book "Climate change and non infectious fish disorders" includes content: An overview with discussions on freshwater and marine ecosystems in North America, tropical marine and brackish ecosystems, skeletal abnormalities, neoplasms, feeding and its regulation.

115p muasambanhan04 11-01-2024 1 1   Download

Ebook "Biology and ecology of venomous stingrays" provides first-hand information on the diversity, biology, and ecology of venomous stingrays of freshwater, brackish, and marine ecosystems. Each year thousands of injuries to swimmers and surfers are reported, with 750 to 1,500 stingray injuries reported each year in the US alone. As more vacationers spend their leisure time exploring coasts and tropical reefs, often in isolated areas without immediate access to advanced health care, there will be greater potential for stingray injuries.

386p lamquandat 28-12-2023 4 3   Download

Part 1 book "Climate change and infectious fish diseases" includes content: Freshwater ecosystems in north america with reference to the great lakes basin; tropical freshwater ecosystems, biota, and anthropogenic activities with reference to south east asia; biological sequestrations of atmospheric carbon dioxide with strategies to enhance storage of the gas; rhabdovirosis; nodavirosis; aquatic birnavirosis; herpesvirosis; orthomyxovirosis; iridovirosis; vibriosis.

226p muasambanhan01 11-12-2023 7 2   Download

Part 1 book "Bacterial fish diseases - Environmental and economic vonstraints" includes content: Aquatic pollution and marine ecosystems, heavy metals as pollutants in the aquatic Black Sea ecosystem, effects of heavy metals and pesticides on fish, pesticide toxicity and bacterial diseases in fishes, impact of aquatic pollution on fish fauna, bacterial diseases in fish with relation to pollution and their consequences, common bacterial infections affecting freshwater fish fauna and impact of pollution and water quality characteristics on... and other contents.

229p oursky08 02-11-2023 10 2   Download

Part 2 book "Proactive strategies for protecting species" includes content: Market models and finance for upstream species conservation; tools to promote transparent and efficient markets for species conservation; the role of electronic marketplaces in scaling environmental markets; prospects for pre listing conservation approaches in freshwater ecosystems; the greater sage grouse, energy development, and pre listing conservation; the gopher tortoise, military readiness, and pre listing conservation; the future of pre listing conservation programs for wildlife conservation

146p oursky07 24-10-2023 3 2   Download

This study investigated the sublethal effects of salinity on four macroinvertebrate species commonly occurring in Australian freshwater ecosystems. These were; the introduced worm Lumbriculus variegatus Müller (Annelida: Oligochaeta), the introduced snail Physa acuta Draparnaud (Gastropoda: Physidae), the shrimp Paratya australiensis Kemp (Decapoda: Atyidae) and the midge Chironomus tepperi Skuse (Diptera: Chironomidae). The effects of salinity on growth, development and reproduction of these species were investigated through a series of laboratory tests.

202p runthenight07 01-03-2023 7 2   Download

The aims of this study are to provide data on species composition and distribution of the mayflies in Dao Tru stream, Dao Tru commune, Tam Dao district, Vinh Phuc province. Specimens were collected in December 2020 both quantitatively by Surber net (50 cm 50 cm, mesh size 0,2 mm) and qualitatively by hand net, pond net and Surber net by “kick net”.

10p vimalfoy 08-02-2023 2 1   Download

In order to provide the information on the biodiversity of Rotifera from Ly Son Island, six samples from four water bodies from Ly Son Island, Quang Ngai Province were collected in May 2019. A total of thirty-six species-level taxa have been identified, belonging to 12 families of Rotifera phylum.

3p vichristinelagarde 04-07-2022 9 2   Download

The antibacterial agent triclosan (TCS) is added to many daily-used consumer products and can therefore reach the aquatic environment via treated wastewater and potentially harm aquatic ecosystems. A 120 days pond mesocosm study was conducted in order to investigate the fate of TCS in water and sediment, its bioaccumulative potential in different biota as well as the effects of TCS and its main transformation product methyl-triclosan (MTCS) on plankton, periphyton, macrophytes, and benthos communities.

9p thebadguys 15-01-2022 5 0   Download

Freshwater ecosystems have a greater value for biodiversity per surface area than terrestrial and marine ecosystems. Streams and lakes are notably prone to biodiversity loss, being the greatest threats habitat destructions and nonnative species. The aim of the present study is to assess the fish composition of lotic and lentic water systems of an island ecosystem (Gökçeada Island, Turkey), which is poorly studied, and to highlight the entry routes and possible impacts of translocated fish species in an island ecosystem.

9p dolomite36 30-12-2021 9 0   Download

This study, the first such attempt in Turkey, aimed to investigate the distribution of diatom species related to the variation of total phosphorus (TP) in eight basins to determine trophic weight and indicator values of diatom species and to develop the Trophic Index-Turkey (TIT) for assessing the ecological status of freshwaters. The distribution of the diatom species in 225 running water bodies from 8 basins of Turkey was determined in 2014 (summer and fall) and 2015 (spring and summer) in association with TP variation.

12p tudichquannguyet 29-11-2021 8 0   Download

Aquatic macrophytes are one of the key components of freshwater ecosystems and contribute to ecosystem functioning and environmental sustainability. They are assumed to be an ideal biomonitoring tool in long-term monitoring programs implemented by the EU Water Framework Directive due to their sensitivity to environmental factors. Therefore, this study focuses on the evaluation of the ecological status in Lake Sapanca using macrophyte composition and abundance in order to make future predictions on the health of aquatic ecosystems and to form effective management.

11p tudichquannguyet 29-11-2021 9 1   Download

Bioassessment of surface waters is one of the most important approaches to predict the deterioration of ecosystems and achieve environmental sustainability according to the application of the European Water Framework Directive. The present review emphasizes the importance of the bioassessment of freshwater quality especially running waters based on diatom metrics. Nutrient enrichment and hydromorphological alternation driven by human activities are the main factors for the ecological compromise of freshwater ecosystems.

18p tudichquannguyet 29-11-2021 10 1   Download

Many cyanobacteria are capable of fixing atmospheric nitrogen, playing a crucial role in biogeochemical cycling. Little is known about freshwater unicellular cyanobacteria Synechococcus spp. at the genomic level, despite being recognised of considerable ecological importance in aquatic ecosystems.

12p vibeauty 23-10-2021 13 0   Download

Gastropoda, with approximately 80,000 living species, is the largest class of Mollusca. Among gastropods, apple snails (family Ampullariidae) are globally distributed in tropical and subtropical freshwater ecosystems and many species are ecologically and economically important.

9p vibeauty 23-10-2021 11 0   Download

The present investigation was aimed at for screening out different genotypes of makhana with regard to their yield and quality under freshwater wetlands of North Bihar

9p chauchaungayxua11 23-03-2021 3 1   Download

Petroleum is a complex mixture composed primarily of aliphatics, alicyclics and aromatic hydrocarbons. This study was to evaluate the potentials of native bacterial population of wastewater environment with the ability for bioremediation of petroleum hydrocarbon polluted natural environment. A fresh water ecosystem west of Lagos state university, Ojo campus that has the history of being fed with both domestic wastewater and spent diesel oil served as source of bacterial samples. Serial dilution technique and total heterotrophic bacterial count for the wastewater was evaluated.

13p gaocaolon5 14-06-2020 10 1   Download