California Water Blog –
California is a hot spot for endemic species, those found nowhere else in the world. Among these species are 20 kinds of salmon and trout. That is an astonishing number considering California is also literally a hot-spot in terms of summer temperatures and that these salmonids are cold-water adapted. These 20 endemic are joined by 12 other species with broader distributions, north along the Pacific Coast. In California, native salmon and trout are at the southern end of the range. They survive here because mountains intercept rain and snow in the cooler months of the year and the powerful California Current keeps the ocean and coast cool year-round. The big question is: can California’s diverse salmon and trout continue to persist in the face of a warming climate and declining coldwater resources?
We think the answer to this question is yes. But first, the bad news. A new report issued by the Center for Watershed Sciences and California Trout has found that nearly 75% of the state’s salmon and trout (salmonids) could be extinct within the next 100 years. Nearly 45% could meet the same fate in just 50 years if present trends continue. The good news is that the report shows that most of these fishes can continue to persist if appropriate actions are taken.
The report, State of the Salmonids II: Fish in Hot Water, was officially released on May 16th. Originally conceived as an update on a report published in 2008, this report contains new information on how to maintain resilient populations. The report explores three important questions: 1) what is the status of all California salmonids, both individually and collectively, 2) what are the major factors responsible for their present status, and 3) how can California’s salmonids be saved from extinction? To answer these questions, we conducted a thorough literature review and interviewed more than 70 species experts from fishery management agencies over a 14-month period. Based on this research and interviews, the authors generated a full scientific account for each species. Each account was then peer reviewed by at least one, and often two or more, species experts.