. | . |
Sunscreen is a threat to coral reef health, but size of threat unknown by Brooks Hays Washington DC (UPI) Mar 31, 2021 As skin cancer rates have increased, health officials have implored the public to lather on the sunscreen. Now, scientists are worried all those UV-filtering compounds are harming coral reefs. Previously, lab experiments have shown oxybenzone, a UV-filtering chemical common in sunscreen, damages the DNA of adult coral and deforms the DNA of coral larvae. Studies have also shown UV-filters can harm fish embryos. However, much less is known about how sunscreen compounds and their derivatives affect coral reef ecosystems in the wild. In a new paper, published Wednesday in the journal Integrated Environmental Assessment and Management, researchers call for a more comprehensive assessment of sunscreen's threat to coral reefs -- habitat already made vulnerable by rising ocean temperature, pollution and overfishing. "Our research aimed to identify what research was out there and what gaps we had in our knowledge," co-author Brett Sallach said in a press release. "Importantly we needed to understand what areas could be considered priority for future attention in order to understand the impacts of these products, and hopefully prevent any further damage to the environment," said Sallach, an environmental scientist at the University of York in Britain. Due to the important human health benefits sunscreen provides, scientists said it is vital that policy makers and conservationists have a firm understanding of sunscreen's threat before making recommendations on their use. Authors of the new study recruited experts in biochemistry to highlight the biggest blindspots in the scientific literature. The experts agree that translating lab experiments to real world environments -- especially highly dynamic marine ecosystems -- remains a challenge. For example, variable conditions in the environment can neutralize or amplify the threats posed by toxic compounds. "We make four recommendations for priority research areas going forward, based on our consultation with experts," said lead author Yasmine Watkins, graduate researcher at York. "We need more work in the area of understanding UV-filter toxicity under different climate conditions, and long-term study into exposure and recovery of coral reefs," Watkins said. "We also need to know realistic exposure to these compounds and how long they exist in the marine environment, to determine what the 'safe' limits are," she said. Previous studies have shown that sunscreen-related toxins are found at higher concentrations around reefs near popular swimming beaches and diving locations. Researchers said they aim to identify priority locations where scientists and regulators can focus on studying the problem and identifying solutions.
In Tunis, flamingos wade past waste in key Africa wetlands Sijoumi, Tunisie (AFP) March 30, 2021 Hundreds of flamingos wade past waste in the murky waters of the vast Sijoumi lagoon, a critical wetland in the heart of Tunisia's capital threatened by overexpansion. Once set apart from the city, today half of Tunis' residents live on the banks of the "sebkha", or mudflat, where more than 100,000 birds of around 100 different species spend winter. The birds' human neighbours complain of pollution, recurrent flooding and swarms of mosquitos from the lagoon, one of North Africa's most important ... read more
|
|
The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us. |