Scientists working to protect California's most endangered salmon say in a new report that key improvements in tracking Sacramento River winter-run Chinook through California's complex water delivery system would help recover the species while the water continues to flow.
Fish cannot see ultraviolet B rays but still change their behavior when they grow up under increased UVB intensity. According to studies by biologists at the University of Bonn on three-spined sticklebacks (Gasterosteus aculeatus), increased UVB leads to a smaller body size and more risk-seeking behavior when faced with predators. Climate change is likely to increase UVB intensity, possibly with consequences for ecosystems and fish farming.
The conversion of tropical forests to crop and pastureland has long been a concern for scientists, a new study points to another unexpected consequence: changes in fish production.
Humans have been altering natural waterways for centuries, but only in the last several decades have dams raised ecological concerns. N. LeRoy Poff, professor of biology at Colorado State University, studies the ecological impact to rivers from human-caused changes, such as dam building, and how these modified river systems can be managed for resilience. In a Perspective piece in the journal Science, Poff writes on the state of research in sustainable dam design.
An international team of marine researchers, led by Dr Neo Mei Lin and Associate Professor Peter Todd from the National University of Singapore, has recently published a comprehensive study on the status of giant clams worldwide.
A new QUT-led study has found ways to detect hidden dangers of repeated stresses on seagrass using statistical modelling. The research, published by the Journal of Applied Ecology, found cumulative maintenance dredging which affected the light on the sea floor increased risks on seagrass survival. It found, globally, seagrass meadows can be at risk of collapse from accumulated effects of repeated dredging and natural stress.
A new study based on the Mekong River basin, home to one of the largest freshwater fisheries in the world, reveals particular dam flow patterns that could be harnessed to boost food production -- by up to nearly four-fold compared to un-dammed ecosystems.
Marine invertebrates are impacted by the rising levels of underwater noise produced by humans, but the production of underwater noise is not only difficult to control, but the direct effect on marine invertebrates can be challenging to observe or measure. Researchers will present results on the use of a standing wave tube to simulate and measure the effects of anthropogenic noise on marine invertebrates at the 174th ASA Meeting, Dec. 4-8, 2017, in New Orleans.
From air pollutant emissions to zooplankton productivity - over 30 years of the European Commission's science and knowledge service, the Joint Research Centre (JRC) scientific collaboration with Africa have been compiled in one publication, "Science for the AU-EU Partnership - Building knowledge for sustainable development".
Vital scientific information about whale shark behavior, biology and ecology is being uncovered by an unlikely source -- ecotourists and other citizens. Thanks to modern advancements in technology and the burgeoning field of 'citizen science,' new information about gregarious and mysterious whale sharks is being revealed in a study slated to publish on Nov. 29 in BioScience.