Native species in California's estuaries are expected to experience greater declines as invasive species interact with climate change, according to a study from the University of California, Davis.
Native species in California's estuaries are expected to experience greater declines as invasive species interact with climate change, according to a study from the University of California, Davis.
The study, published in the Ecological Society of America's journal, Ecology, said these declines are expected not only because of climate-related stressors, but also because of the expanding influence of new invasive predators whose impacts are occurring much farther up the estuary.
"Our study found that climate change and biological invasions can interact in coastal estuaries in unpredictable ways," said lead author Benjamin Rubinoff, a Ph.D. student in the UC Davis Department of Environmental Science and Policy when the research was conducted. "This increased risk of predation makes it difficult for native species that are already dealing with increasingly stressful environmental conditions."
The researchers tested the influence of environmental stress and predation on sessile invertebrates in Tomales Bay, California during the summer of 2019. Sessile invertebrates are animals without backbones that attach to reefs or seagrasses and barely move, such as bryozoans and ascidians. Their predators include sea stars, crabs, and snails, among other species.
Read more at University of California - Davis
Image: Study lead author Ben Rubinoff holds a sea lemon, a predatory nudibranch that eats sponges, at Tomales Bay in Northern California. (Credit: Courtesy Ben Rubinoff)
