Algal bloom

Part 2 book "Fowler's zoo and wild animal medicine current therapy" includes content: Fish medicine updates, antibiotic resistance in public aquariums, harmful algal blooms, emerging infectious diseases of reptiles, tropical avian diseases, avian hatching assistance, egg necropsies, electrocution of raptors, update on the status of vultures and nonsteroidal antiinflammatory drug regulations,....and other contents.

424p muasambanhan10 03-04-2024 5 1   Download

Phosphate enters the aquatic system through runoff from pastures, croplands, urban areas, and sewage treatment systems and fosters algal bloom causing eutrophication at higher concentrations in water. Therefore, controlling its concentration through routine water quality monitoring in aquatic ecosystems is essential.

16p vialfrednobel 21-12-2023 5 2   Download

Part 2 book "Climate change on diseases and disorders of finfish in cage culture" includes content: Non-Infectious disorders of warmwater fish, sporadic emerging infectious and non infectious diseases and disorders, movement of infectious agents between wild and farmed fish,.... and other contents.

239p oursky06 17-10-2023 3 3   Download

Studies on dinoflagellate cysts provide important knowledge on the ecology of dinoflagellates and harmful algal blooms (HABs). In this study, distribution and abundance of dinoflagellate cysts in surface sediments from 17 stations at Van Phong Bay were analyzed. There were 55 different types of cysts representing 3 orders and 18 genera, and 8 unidentified cyst types recorded.

14p vicaptainmarvel 21-04-2023 2 2   Download

The proposed approach consists of two steps: (1) a new CyanoHAB spectral index called Broad Wavelength Algae Index (BWAI) is developed for fine-but-sparse (Landsat) and coarse-but-frequent (MODIS) satellite images, and (2) the Landsat and MODIS derived BWAI images are fused by the Robust Adaptive Spatial and Temporal Fusion Model (RASTFM) to generate fine-and-frequent Landsat-like BWAI images.

19p thebadguys 15-01-2022 19 2   Download

Skeletonema species are prominent primary producers, some of which can also cause massive harmful algal blooms (HABs) in coastal waters under specific environmental conditions. Nevertheless, genomic information of Skeletonema species is currently limited, hindering advanced research on their role as primary producers and as HAB species. Mitochondrial genome (mtDNA) has been extensively used as “super barcode” in the phylogenetic analyses and comparative genomic analyses. However, of the 21 accepted Skeletonema species, full-length mtDNAs are currently available only for a single species, S.

14p vilarryellison 29-10-2021 5 0   Download

Marine bacteriophages play key roles in the community structure of microorganisms, biogeochemical cycles, and the mediation of genetic diversity through horizontal gene transfer. Recently, traditional isolation methods, complemented by high-throughput sequencing metagenomics technology, have greatly increased our understanding of the diversity of bacteriophages. Oceanospirillum, within the order Oceanospirillales, are important symbiotic marine bacteria associated with hydrocarbon degradation and algal blooms, especially in polar regions.

16p vitzuyu2711 29-09-2021 6 1   Download

Diatoms play a great role in carbon fixation with about 20% of the whole fixation in the world. However, harmful algal bloom as known as red tide is a major problem in environment and fishery industry. Even though intensive studies have been conducted so far, the molecular mechanism behind harmful algal bloom was not fully understood. There are two major diatoms have been sequenced, but more diatoms should be examined at the whole genome level, and evolutionary genome studies were required to understand the landscape of molecular mechanism of the harmful algal bloom.

12p vitzuyu2711 29-09-2021 15 1   Download

The main objective of this study was to confirm and estimate the algal inhibiting effects of the ethanol and ethyl acetate E. fortunei extracts at concentrations of 500 mg.L- in some natural water samples collected from Hoan Kiem and Lang Lakes. The results of this work may be useful for controlling the toxic cyanobacterium bloom in natural aquatic ecosystem.

10p koxih_kothogmih5 04-09-2020 11 4   Download

Hiện tượng tảo nở hoa (algal bloom) và đặc biệt là sự bùng nổ tảo độc (harmful algal bloom) xảy ra ngày càng thường xuyên hơn ở hồ Xuân Hương, thành phố Đà Lạt. Tình trạng này đang gây nên những ảnh hưởng to lớn đến một trong những danh lam thắng quan trọng nhất của thành phố Đà Lạt. Hậu quả có thể là những thiệt hại rất lớn không những đến ngành du lịch mà còn đến sức khỏe của cộng đồng người dân thành phố và khách du lịch.

9p viengland2711 23-07-2019 57 4   Download

To determine the occurrence of dominant phytoplanktonic species causing red tides along the eastern Black Sea (Trabzon) coast of Turkey, multiple samples were collected periodically between 1991 and 2001. Red tide events were observed only during the periods between February and July. Six phytoplanktonic species causing 5 red tide events detected were Diplopsalis lenticula, Euglena acusformis, Eutreptia lanowii, Pyramimonas orientalis, Scrippsiella trochoidea, and Gymnodinium sanguineum.

5p vimessi2711 02-04-2019 27 0   Download

Temporal and spatial variations of environmental factors were correlated with the abundance and diversity of fish larvae. The abundance and diversity of fish larvae decreased at the sites of the algal blooms. Five environmental factors: emperature, salinity, nitrite, phosphate and silicates showed a statistically significant impact on the fish larvae, but other factors showed weaker and statistically not significant effects.

9p jangni 16-04-2018 53 1   Download

Chlorine and other chemicals used to disinfect source water can form carcinogenic compounds when they react with organic matter. These compounds become a serious problem when nutrient overloads trigger recur- rent and persistent blooms of algae that contaminate source water. The reaction between chlorine and algal organic matter generates trihalomethanes and haloacetic acids, two types of disinfection byproducts that are federally regulated, as well as many other types of toxic byproducts. A study sponsored by the U.S.

55p saimatkhauroi 01-02-2013 46 3   Download

To tackle polluted source water, water utilities in the region are often forced to install expensive treatment plants that can cost millions to install and operate. USDA economists estimate that removing nitrate alone from drinking water costs more than $4.8 billion a year. The cost of dealing with algal blooms is particularly daunting. The total capital cost of water treatment that would address cyanobacterial blooms and cyanotoxins, can range between $12 million and $56 million for a town of 100,000 people.

0p saimatkhauroi 01-02-2013 58 5   Download

The cascade continues when utilities try to combat these and other threats by treating drinking water with chemical disinfectants such as chlorine. Treating algal contamination this way gives rise to carcinogenic disin- fection byproducts, whose levels typically spike during the summer months – when algae blooms peak. Com- monly used measures to reduce algal contamination add hundreds of thousands of dollars annually to water utilities’ treatment costs.

32p saimatkhauroi 01-02-2013 88 4   Download

Enormous increases in agricultural productivity can properly be associated with the use of chemicals. This statement applies equally to crop production through the use offertilizers, herbicides, and pesticides, as to livestock production and the associated use of drugs, steroids, and other growth accelerators. There is, however, a dark side to this picture and it is important to balance the benefits which flow from the use of agricultural chemicals against their environmental impacts, which sometimes are seriously disadvantageous.

134p tom_123 14-11-2012 68 7   Download