Conservation

All seven of the United States’ abalone species that live on the West Coast are listed as Critically Endangered or Endangered according to the International Union for Conservation of Nature, or IUCN, Red List of Threatened Species. This is the first global Red List assessment of the species. The West Coast listings were based on an abalones assessment led by Laura-Rogers Bennett of the California Department of Fish and Wildlife, or CDFW, and University of California, Davis.

Whales are threatened by a variety of human activities off the West Coast of the United States, including fishing, ship traffic and pollution. Overlap between these stressors can compound effects on whale populations, but are rarely addressed by current whale-protection policies in California, according to a study from the University of California, Davis.

Read more on UC Davis News

The world’s abalone are threatened, endangered or otherwise vulnerable in nearly every corner of the planet. While captive breeding efforts are underway for some species, these giant sea snails are notoriously difficult to spawn. If only we could wave a magic wand to know when abalone are ready to reproduce, without even touching them. 

About the size of a small school bus, the basking shark is the second largest fish in the ocean and is found in temperate and tropical waters across the globe. In the mid-1900s, basking sharks were observed by the thousands each year off California’s coast. Now they are rarely seen at all in this region, called the California Current Ecosystem, or CCE.

Habitat conservation can help buy time for heat-sensitive species in the face of climate change – but it might also leave them in a trap by preventing them from adapting in time, according to a new study from the UC Davis Bodega Marine Laboratory recently published in the journal Ecology.

Read the article on ucdavis.edu

“This is actually better than sustainable, because the more you fish it, the better off the kelp forest will be. This is a restorative seafood product.”

-Laura Rogers-Bennett, a research associate at the University of California, Davis and a scientist at the California Department of Fish and Wildlife

New research documenting the population crash of the iconic sunflower sea star (Pycnopodia helianthoides), and complete absence of population recovery since the 2013 outbreak of the marine wildlife epidemic sea star wasting disease, was published today in the prestigious journal Proceedings of the Royal Society B. The study calls for new strategies for protecting species impacted by increasingly frequent marine epidemics associated with changing ocean conditions.

Marine ecosystems are vulnerable to climate driven events such as marine heatwaves yet we have a poor understanding of whether they will collapse or recover. Kelp forests are known to be susceptible, and there has been a rise in sea urchin barrens around the world. When temperatures increase so do physiological demands while food resources decline, tightening metabolic constraints. In this case study, we examine red abalone (Haliotis rufescens) looking at sublethal impacts and their prospects for recovery within kelp forests that have shifted to sea urchin barrens.

Researchers at UC Davis’ Coastal and Marine Sciences Institute (CMSI), in collaboration with UC Santa Cruz and Humboldt State University, recently received a joint $1.6 million grant from the National Science Foundation to understand how ecological restoration might incorporate future climate change impacts.

UC Davis project scientist Kristin Aquilino directs the Bodega Marine Laboratory's white abalone captive breeding program. In this video, she discusses the work she and her colleagues are doing to bring the endangered species back from the brink of extinction. This week marks the first time captive bred white abalone will be released to the ocean in hopes of saving the species.

Envision California’s lush forests from San Francisco to the Oregon border. Now imagine that 90 percent of those forests disappear within two years. Laura Rogers-Bennett, senior environmental scientist with the California Department of Fish and Wildlife, says that’s exactly what happened to underwater kelp forests off Northern California’s coastline from 2014-16.

Read more & listen to the piece on Science Friday

A career dedicated to mollusks isn’t always easy. Sometimes progress can occur at a snail’s pace. But a team of scientists are close to reaching a significant milestone in their efforts to bring white abalone — a species of sea snail — back from the brink of extinction.

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My job is to write about the wonders and challenges of our coast and oceans, but I’ll admit: Before this story, I had no idea what an abalone looked like...

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The California coast once teemed with millions of white abalone. Overfishing, warming oceans and predators devastated the species. Almost all are gone. Now scientists are trying to save this mysterious sea snail.

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Scientists are celebrating a population boom among endangered white abalone being raised at the UC Davis Bodega Marine Lab as they approach the day they can begin introducing captive-bred sea snails into their natural ocean habitat — perhaps later this year or next.

Read More in the Santa Rosa Press Democrat