Egg banks in hypersaline lakes of the South-East Europe
The study of cyst hatching, performed on 5 cyst types under lab conditions, demonstrated that cysts do not hatch under the same conditions....

Urmia Lake (Northwest Iran): a brief review
Lake Urmia (or Ormiyeh) is one of the largest hypersaline lakes in the world and the habitat of a unique bisexual Artemia species (A. urmiana)...

Biomonitoring of Pb and Cd in two impacted watersheds in Southeast Brazil, using the freshwater mussel Anodontites trapesialis (Lamarck, 1819) (Bivalvia : Mycetopodidae) as a biological monitor
Studies were carried out to investigate the contamination of Piracicaba and Mogi-Guaçu River basins (São Paulo State, Southeastern, Brazil) for heavy metals (Cd and Pb), using the limnic bivalve Anodontites trapesialis as a biological monitor.

Health Of Nation's Water Supply May Be Found At The Head Of The River
Recent decisions by the U.S. Supreme Court have focused national attention on what bodies of water fall under federal jurisdiction for protection under the Federal Clean Water Act (CWA).

First-Ever Comprehensive Global Map Of Freshwater Systems Released
Over a decade of work and contributions by more than 200 leading conservation scientists have produced a first-ever comprehensive map and database of the diversity of life in the world’s freshwater ecosystems

Silent Streams? Escalating Endangerment For North American Freshwater Fish
Nearly 40 percent of fish species in North American streams, rivers and lakes are now in jeopardy, according to the most detailed evaluation of the conservation status of freshwater fishes in the last 20 years.

Canada's pristine freshwater fisheries at risk
If you want to catch a trophy northern pike, walleye or brook trout in the northern Canadian wilderness, better plan your trip soon.

Cornell finds deadly fish virus in the Northeast is spreading to other species
Cornell researchers have found that a deadly fish virus detected in the northeastern United States for the first time in June in two species has probably spread to at least two more...

Cornell lab confirms deadly fish virus spreading to new species
A lethal fish virus in the Great Lakes and neighboring waterways is approaching epidemic proportions

What's In The Water? Estrogen-like Chemicals Found In Fish Caught In Pittsburgh's Rivers, USA
A new study from the University of Pittsburgh Cancer Institute's Center for Environmental Oncology suggests that fish caught in Pittsburgh rivers contain substances that mimic the actions of estrogen, the female hormone.

The effects of aquatic macrophytes on river water
The effect of macrophytes on dissolved nutrients

Overfishing in inland waters reduces biodiversity and threatens health
Threats to freshwater fisheries and associated biodiversity largely unrecognized, authors state

Study Shows Zebra Mussels Can Colonize Sand And Mud
Researchers have found that zebra mussels have built colonies on the sandy and muddy bottom of Lake Erie

Ontario's 'Cottage Country' Lakes See Increase In Taste And Odour-causing Algae
Ninety per cent of the lakes surveyed in a study of Ontario's "cottage country" north of Toronto have seen a significant rise in taste and odour-causing algae

Arctic Rivers Discharge More Freshwater Into Ocean, Reflecting Changes To Hydrologic Cycle
Far northern rivers are discharging increasing amounts of freshwater into the Arctic Ocean

Recovery From Acid Rain 'Much Slower Than Expected'
Acid rain was one of the world's worst pollution problems of the 1970s and 1980s

Lakes And Streams Taking Time To Recover From Acid Rain
Lakes and streams in Maine and other parts of North America are taking more time than expected to recover from the effects of acid rain

Effects of the organophosphorous methyl parathion on the branchial epithelium of a freshwater fish Metynnis roosevelti
The purpose of the study is to use the morphology of the gills of M. roosevelti as indicators of the effects of lethal and sublethal effects of the organophosphorous compound methyl parathion

Temporal and spatial distribution of the ichthyofauna in two streams of the upper Rio Paraná basin
The present study extended these investigations to the eastern bank, treating small lotic bodies of water.

Impacts of the construction of the Port of Suape on phytoplankton in the Ipojuca River estuary (Pernambuco-Brazil)
This paper characterizes the planktonic flora of the estuary of the Ipojuca River after the port construction in comparison with previous observed data