15 kwietnia 2021
Oceanological and Hydrobiological Studies
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Str. główna2018Wrzesień

Miesiąc: Wrzesień 2018

Hydrobiology

Copepoda in the shallow hypersaline Bardawil coastal lake (Egypt): Are there long-term changes in composition and abundance?

20 września 2018 Grzegorz Kozlowski 0

Coastal Lake Bardawil (Egypt) is one of the largest hypersaline lakes in the world. In 2009–2010, the authors studied composition, distribution and seasonal dynamics of copepods at 12 sites. A total of 10 species of […]

Hydrobiology

Pattern of secondary infection with Saprolegnia spp. in wild spawners of UDN-affected sea trout Salmo trutta m. trutta (L.), the Słupia River, N Poland

20 września 2018 Grzegorz Kozlowski 0

Ulcerative dermal necrosis (UDN), a disease of unknown etiology affecting salmonids, has been observed in some rivers in the north of Poland since 2007. Fish affected by UDN die, inter alia, as a result of […]

Hydrobiology

Some morphometric features of congeneric pipefish species (Syngnathus abaster Risso 1826, Syngnathus acus Linnaeus, 1758) distributed in Lake Bafa (Turkey)

20 września 2018 Grzegorz Kozlowski 0

The study was carried out between November 2014 and March 2016 to determine certain morphometric characteristics of two pipefish species occurring in Lake Bafa, Syngnathus abaster and Syngnathus acus. A total of 211 pipefish were […]

Marine physics

Seafloor mapping based on multibeam echosounder bathymetry and backscatter data using Object-Based Image Analysis: a case study from the Rewal site, the Southern Baltic

20 września 2018 Grzegorz Kozlowski 0

Seafloor mapping is a fast developing multidisciplinary branch of oceanology that combines geophysics, geostatistics, sedimentology and ecology. One of its objectives is to isolate distinct seabed features in a repeatable, fast and objective way, taking […]

Hydrobiology

Short-term changes in phytoplankton assemblages and their potential for heavy metal bioaccumulation – a laboratory study

20 września 2018 Grzegorz Kozlowski 0

This study focused on phytoplankton changes in polluted waters of Lake Manzala and the assessment of heavy metal bioaccumulation capacity during the 15-day laboratory experiment. Phytoplankton samples were analyzed every day and the concentration of […]

Marine chemistry

Impact of the 2014 Major Baltic Inflow on benthic fluxes of ferrous iron and phosphate below the permanent halocline in the southern Baltic Sea

20 września 2018 Grzegorz Kozlowski 0

The impact of 2014 Major Baltic Inflow (MBI) on ferrous iron (FFe(II)) and phosphate (FPO43−) benthic fluxes was investigated. Sampling took place few months after the MBI, in August 2015, and over one year after […]

Hydrobiology

Is zooplankton an indicator of the water trophic level in dam reservoirs?

20 września 2018 Grzegorz Kozlowski 0

The trophic state of ten dam reservoirs was assessed using a zooplankton community. In order to determine the trophic state of dam reservoirs, we used indices calculated on the basis of density and species structure […]

Hydrobiology

Grazing of the copepod Cyclops vicinus on toxic Microcystis aeruginosa: potential for controlling cyanobacterial blooms and transfer of toxins

20 września 2018 Grzegorz Kozlowski 0

Grazing of zooplankton on phytoplankton may contribute to a reduction of harmful cyanobacteria in eutrophic waters. However, the feeding capacity and interaction between zooplankton and toxic cyanobacteria vary among grazer species. In this study, laboratory […]

Hydrobiology

Changes in the benthic fauna composition in the Upper Vistula over the last 50 years – the consequences of the water pollution reduction and alien species invasion

20 września 2018 Grzegorz Kozlowski 0

The organic pollution of the Upper Vistula waters has been significantly reduced since the mid-20th century. Also salinity has gradually decreased, following an increase observed until the 1990s. Furthermore, the number of alien species has […]

Hydrobiology

Diatom biomonitoring – scientific foundations, commonly discussed issues and frequently made errors

20 września 2018 Grzegorz Kozlowski 0

Contemporary assessment of the ecological status of aquatic ecosystems is based on various groups of organisms, including diatoms. Biological assessment, implemented by the Water Framework Directive, has been applied worldwide for more than 15 years. […]

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