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Aquatic Conservation: Marine

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A 170 km journey by a freshwater stingray challenges long-held conservation assumptions

June 8, 2026 dialog A 170 km journey by a freshwater stingray challenges long-held conservation assumptions Lisa Lock Scientific Editor Robert Egan Associate Editor Most sharks and rays inhabit the oceans, but a small proportion thrive in freshwater. Approximately 4% to 5% of all shark and ray species live in tropical and subtropical rivers around the world. Two main ecological strategies can be distinguished among freshwater sharks and rays.

Phys.org 2d ago

Two decades of data show that climate change is transforming Biscayne Bay to be warmer, saltier and more acidic

Two decades of data show that climate change is transforming Biscayne Bay to be warmer, saltier and more acidic Stephanie Baum Scientific Editor Robert Egan Associate Editor Climate change and sea level rise are altering the chemistry of Biscayne Bay in ways that could threaten South Florida's coastal ecosystems, water resources, fisheries, and recreation, according to a study led by scientists from the University of Miami Rosenstiel School of Marine, Atmospheric, and Earth Science and...

Phys.org 8d ago

Extracellular vesicles from Manila clam (Ruditapes philippinarum): tailored isolation from hemolymph and insights into water-derived vesicles

Extracellular vesicles (EVs) are evolutionarily conserved mediators of intercellular communication released by cells into biological fluids and the extracellular environment. Despite their growing relevance in biomedical and veterinary research, knowledge on EVs in marine bivalves remains limited. The aim of this study was to optimize tailored protocols for EV isolation from the hemolymph of the Manila clam (Ruditapes philippinarum) based on density gradient ultracentrifugation (dgUC) or...

bioRxiv 9d ago

Growing numbers of volunteers tackle trash on Singapore's beaches

Growing numbers of volunteers tackle trash on Singapore's beaches Volunteer participation in beach clean-ups has risen by up to 50 per cent over the past year, with organisers attributing the growth to increasing environmental awareness, especially among younger Singaporeans. SINGAPORE: More people are heading to the beach – not just for recreation, but also to help clean up Singapore’s coastline. Organisers of beach clean-up initiatives say volunteer participation has increased by as much...

Channel News Asia 2d ago

eDNA metabarcoding evaluated for fish diversity assessment

eDNA metabarcoding evaluated for fish diversity assessment Gaby Clark Scientific Editor Andrew Zinin Lead Editor Environmental DNA (eDNA) metabarcoding has emerged as a powerful tool for monitoring aquatic biodiversity, enabling researchers to identify fish species from traces of DNA found in water without using invasive techniques on fish. Although this technique is gaining traction, it introduces certain biases and uncertainties at various stages, thereby affecting the production of...

Phys.org 22h ago

50 years of data reveals true extent of climate change impacts on kelp forests

50 years of data reveals true extent of climate change impacts on kelp forests Gaby Clark Scientific Editor Andrew Zinin Lead Editor New research from the University of Victoria (UVic) has found that some kelp forests around Vancouver Island were disappearing far earlier than scientists previously thought, highlighting that climate change has been altering ecosystems long before most people were aware anything was wrong. "Most research has focused on recent kelp forest losses resulting from...

Phys.org 1d ago