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Cross-Border Sewage Contaminated Flows: Monitoring the Tijuana River
The Tijuana River runs across the US-Mexico boundary, flowing into and throughout southern California, carrying with it nutrients and contaminants throughout the estuary. In recent decades, the flows have been heavily polluted with untreated sewage from the City of Tijuana. The wastewater enters the greater Tijuana River estuary, impacting coastal communities and disrupting the natural environment. In order to better understand these cross-border flows, researchers out of San Diego University sought to monitor the waterway test the capabilities of in-situ sensors to measure the contaminated water. Natalie Mladenov and Trent Biggs were two of the researchers involved in the project, deploying a real-time monitoring system in May of 2021.
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Using Data Buoys to Track Sharks in Cape Cod
Despite the bad rap sharks often get in the media, they are incredibly important to marine ecosystems. Still, sharks residing in coastal, high-traffic areas can pose a risk to public safety—as a result, shark tracking and monitoring projects are often conducted in these waters. Regardless of the bad press, biologists like Gregory Skomal, a Senior Fisheries Scientist with the MA Division of Marine Fisheries, have always been interested in learning more about shark behavior for the sake of informing conservation efforts. “I was passionate about sharks as a child. I wanted to be a marine biologist, and pursued it through my education and ended up where I am today,” recalls Skomal.
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2025 Essential Water Monitoring Gear
Stay ahead of the curve with five of the top water monitoring products for 2025. Technological advancements and manufacturing innovations are leading to better quality data, improved price points, and enhanced user experience. And, while the ‘essentials’ list includes several new products, two tried-and-true measurement instruments continue to take a top spot for portable instrumentation. These five products were developed by industry-leading suppliers, and in addition to extensive manufacturer testing, our science team tested and verified each instrument’s performance at the Fondriest Center for Environmental Studies .
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