February 12, 2018 — A U.S. District Court judge recently ruled that the federal government’s catch limit for California’s central stock of anchovy — currently 25,000 metric tons — is far too high.
But instead of weighing all the facts, the judge ignored them, shunned the established precedent of deference to federal agencies’ scientific determinations and instead endorsed the flawed arguments of the advocacy group Oceana.
So what happened?
It’s a well-accepted fact that the anchovy population on the West Coast has extreme natural variations in abundance, even without fishing. To account for these wild swings, scientists reduced the overfishing limit of 100,000 tons by 75 percent, setting the annual catch limit at 25,000 metric tons. The Pacific Fishery Management Council’s Science and Statistical Committee approved the numbers as “best available science” and the National Marine Fisheries Service agreed, recognizing that the anchovy resource ranges from peaks of more than two million tons to orders of magnitude lower and quickly jumps back up again.
In California, the anchovy fishery declined in the 1980s due to adverse market conditions and landings have averaged less than 10,000 tons a year ever since. But this fishery is still important because it keeps the local fleet on the water and processing plant doors open when no other fish are available.
Regardless, environmentalists began lobbying the council in 2015 to curtail California’s anchovy catch limit after one advocacy group funded a new research paper that reassessed the basis for anchovy management — a 1991 study based on egg and larval data that represented long-term average biomass abundance, not a single-year stock assessment. Because the reassessment had virtually no adult anchovy biological data from recent years to correlate, the authors had to make assumptions. They concluded that the anchovy population had collapsed, with current biomass estimated at only about 15,000 tons coast-wide.
But other scientists challenged the findings, in part because the new estimate excluded Mexico where a substantial portion of the stock resides, and it also omitted nearshore waters where fishermen were reporting masses of anchovy.
Richard Parrish, retired from NMFS after decades of experience with anchovy, critiqued the paper and stated, “The biomass estimates in the paper cannot be used to estimate the 2016 biomass of the northern stock of anchovy…” He continued, “Clearly, with northern anchovy a five-year-old biomass estimate is not significantly better at estimating current biomass than a 25-year-old biomass estimate.” That statement was included in the Administrative Record (AR) for the Oceana lawsuit, but the judge ignored it.
In 2016, the council sponsored a data-poor workshop where internationally recognized scientists reviewed the new egg-larval analysis along with other available data and also rejected the study’s findings. As one member said, “The estimate did not pass the straight face test.”
Here’s why: the new assessment did not consider anchovy fishery landings, which in 2015 totaled about 64,000 tons, only 17,000 tons in California (still under the 25,000 ton catch limit) and the rest from Mexico. As Parrish pointed out, “Clearly, the absolute minimum biomass estimate for 2015, assuming that the fishery caught every last anchovy in the population, would be 64,114 tons. If fishermen took 50 percent of the biomass, based on recorded landings, the estimate would be 128,000 tons and if they took only 20 percent of the biomass, the estimate would be 320,000 tons, massively above the study’s assertions.”
Read the full opinion piece at the Santa Cruz Sentinel