News

Researcher aims to get to the bottom of harmful, hidden riverbed algae

University of Nevada, Reno researcher to create predictive models to better protect pets and humans

While algae growing in our lakes, ponds and reservoirs can be quite visible, the algae in many of our rivers and their tributaries is often not so obvious, lurking on the bottom of the rivers, and clinging to rocks. Yet, some of these riverbed blue-green algae, referred to as “cyanobacteria,” can create algal blooms that produce toxins harmful not only to aquatic life, but also to pets, livestock and humans. University of Nevada, Reno Assistant Professor Joanna Blaszczak is conducting research to identify the specific conditions conducive to producing these blooms and their toxins, so that water managers can know when they are going to occur and take actions to better protect animals, humans and river ecosystems.

The research will be conducted through 2023, funded by almost $200,000 from the National Science Foundation’s Division of Environmental Biology. Blaszczak, in the University’s College of Agriculture, Biotechnology & Natural Resources, is partnering with several other entities to study three river systems in northern California – the Russian, Klamath and Eel – to research one type of these toxins in particular, a neurotoxin called anatoxin. She says the Mediterranean climate conditions in northern California, with long, dry summers, are partly what allows the “cyanoHABS” (cyanobacterial Harmful Algal Blooms) to form.

EcoNews Report: Clam Beach Pollution Mystery Solved?

Clam Beach landed on Heal the Bay's list of California's most polluted beaches yet again this year, getting an 'F' for water quality on the 2021 Beach Report Card. This episode of EcoNews Report features Dr. Jeremy Corrigan, who has worked for years to answer the burning question: why does Clam Beach have such high levels of fecal indicator bacteria? Dr. J is the Lab Manager at the Humboldt County Dept. of Public Health, and recently published a paper based on genetic analysis of the most likely sources. His findings point to birds as the main influence at Clam Beach, while cattle appear to be the biggest source of bacteria pollution in the Strawberry Creek watershed. Tune in to find out what this means for surfers and other beachgoers.

Eureka plans wastewater plant upgrades amid calls to not discharge sewage into Humboldt Bay

City seeks ruling from regional water board in August

For years, the city of Eureka sent treated wastewater directly into Humboldt Bay from its Elk River processing plant.
But five years ago, the North Coast Regional Water Control Board ordered the city to “cease and desist” and to move to ocean discharge by 2030. The city is now seeking a resolution that would allow wastewater to continue to be discharged into the bay. The water board will meet in mid-August to decide.

Whether or not the city is granted the exemption to continue, there are plans in the works to make upgrades to the Elk River wastewater facility.

Surfrider, Humboldt Baykeeper, and EPIC argue the city needs to stop sending treated sewage into the bay and comply with the water board’s order to move to ocean discharge.

“We think that a discharge exemption is putting the cart before the horse. They need to vastly improve the wastewater treatment system to clean up that effluent before it could be determined whether it’s reasonable to continue discharging it into the bay,” Jennifer Kalt, the director of Humboldt Baykeeper, told the Times-Standard.

Clam Beach’s dirty water makes annual Beach Bummer list; New study finds birds are the source

Once again, Humboldt County’s Clam Beach has been ranked as one of the state’s 10 worst beaches when it comes to water quality.
According to Heal The Bay’s 2020-21 beach report card, Clam Beach at Strawberry Creek is the seventh worst in the state. The environmental nonprofit’s Beach Bummer list ranks the state’s 10 most polluted beaches according to water sampling data.

Clam Beach has posted failing summer dry grades in seven out of the last 11 years Heal The Bay has published its report cards.

Humboldt Baykeeper director Jennifer Kalt said strong evidence indicates high levels of bacteria in the ocean waters can be linked to birds, as opposed to bacteria originating from cattle in the freshwater stream.

“Even though the levels of bacteria are high enough to get an F grade on the Beach Bummer list, the genetic analysis shows (the bacteria) is primarily from birds,” she said. “And so, in the ocean, you have the influence of birds because there’s so many birds at the beach.”

Kalt also pointed out the risk of bacteria from these sources is lower compared with bacteria coming from human sources, found in samples affected by septic runoff.

The number of bacteria coming from human feces is low in the streams.

“As far the freshwater goes in the creeks, there were very few human markers found, which means that (the contamination) is not coming from septic systems, which is what a lot of people think,” she elaborated.

Ginger recommends any beachgoers or concerned visitors stay safe from any potential danger by checking water quality updates at BeachReportCard.com, as water conditions can improve or worsen throughout the day, and sampling is done weekly. He also recommends staying 100 yards away from the mouth of Strawberry Creek when in the water.

“We just want folks to be aware of that and be cautious of the creek mouth whenever they’re out there, that’s going to be the best way to protect themselves,” he said.

Four other Humboldt County beaches which the county monitors posted passing grades. Mad River Beach’s northern mouth was awarded an A+ grade, while Little River State Beach at Moonstone County Park and Trinidad State Beach at Mill Creek were both given B grades. Luffenholtz Beach at Luffenholtz Creek received a C grade after appearing on the Beach Bummer list in 2017 and 2018.

How much mercury is in your seafood?

Report: Most local fish, shellfish harmless in moderation

A new study assessing mercury accumulation in local fish and shellfish found most nearshore coastal species are safe to consume in moderation — with a few exceptions.A new study assessing mercury accumulation in local fish and shellfish found most nearshore coastal species are safe to consume in moderation — with a few exceptions.

The study, conducted by Humboldt Baykeeper between 2019 and 2020, took a look at the mercury levels in 70 individual fish across nine species including lingcod, several species of rockfish as well as Pacific and California halibut.

“This is our second study and we focused on fish caught in nearshore areas between Reading Rock and Cape Mendocino whereas our first study focused on fish caught in Humboldt Bay,” said Humboldt Baykeeper director Jennifer Kalt. “Pacific halibut was one species that a lot of the sport fishers wanted us to focus on because it’s such a popular fish, people are catching the living daylights out of it right now.”