• ucsantabarbara twitter avatar
    A new construction project on campus aims to ‘pave’ the way for updated utilities & better infrastructure at #UCSB. https://t.co/FkRmgpo8LC
    3 hours 45 min ago
  • UCSBgauchos twitter avatar
    WWP: Gauchos End The Day With A Dominate Win And A Close Loss https://t.co/U0mHxrjEPb
    1 day 1 hour ago
  • UCSBgauchos twitter avatar
    WBB: Gauchos Share The Cape In All-Around 74-62 Win Over Hawai'i On Super Hero Night https://t.co/7JozUy4Wi1
    1 day 2 hours ago
  • UCSBgauchos twitter avatar
    Vincent Hits 1,000 Point Mark But UCSB Loses at UC Riverside, 65-55 https://t.co/rvtR2CFZwU
    1 day 3 hours ago
  • ArtsandLectures twitter avatar
    Tune in to @prairie_home to hear @odonovanaoife & pals performing songs from #lalaland! Now on KCLU
    1 day 4 hours ago
  • UCSBgauchos twitter avatar
    WBB: FINAL UCSB 74 - Hawaii 62 Gauchos rack up season-best 4th straight win, improve to 9-9 (4-1). Edelman 19pts 6reb, Toler 17pts off bench
    1 day 4 hours ago
  • UCSBgauchos twitter avatar
    WBB: We're inside the last minute of regulation, Toler with 10 points in the final quarter. 71-60 UCSB 46.1 remaining.
    1 day 4 hours ago
  • UCSBgauchos twitter avatar
    WBB: Gauchos roar off the first 8pts and Hawaii needs to talk about it! 58-45 UCSB 7:54 remaining in the fourth quarter.
    1 day 5 hours ago
  • UCSBgauchos twitter avatar
    WBB: End of Third Quarter UCSB 50 - Hawaii 45 Hernandez goes for 8pts in 3Q. Gaucho pep band is ready for the fourt… https://t.co/VDP5Er1MZ1
    1 day 5 hours ago
  • UCSBgauchos twitter avatar
    WBB: Gauchos respond to a mini Hawaii run with a Durr and-one, and back-to-back 3's from Hernandez. 45-37 UCSB 4:56 left in 3Q.
    1 day 5 hours ago
  • UCSBgauchos twitter avatar
    WBB: Halftime UCSB 31 - Hawaii 26 Edelman with team highs 10pts and 3rebs. Gauchos a 14-8 pts in paint advantage, 11-2 off turnovers.
    1 day 5 hours ago
  • UCSBgauchos twitter avatar
    WBB: Toler with an emphatic chase down block from behind! She has first 2 buckets for UCSB in 2Q. 27-19 Gauchos, 4:21 before halftime.
    1 day 5 hours ago
  • UCSBgauchos twitter avatar
    WBB: End of First Quarter UCSB 23 - Hawaii 15. Porter leads all scorers with 9pts, 3/4 from downtown. Gauchos 11pts from 5 Hawaii turnovers.
    1 day 6 hours ago
  • UCSBgauchos twitter avatar
    WBB: Gauchos sink their first 4 from the field, 3/3 from downtown and lead 18-9 at 1Q media break. Porter 2/2 for trey, Edelman doing work.
    1 day 6 hours ago
  • brenucsb twitter avatar
    Growing an interest in nature: #UCSB students & Edible Campus Project plant seeds of sustainability in preschoolers https://t.co/dyoiFtroWo
    1 day 11 hours ago

ROCKFISH POPULATIONS DECLINING SAY RESEARCHERS

Tuesday, October 6, 1998 - 17:00
Santa Barbara, CA

Rockfish populations off the Southern and Central California coast have severely declined in recent years, according to marine biologists from the University of California, Santa Barbara.

A study headed by biologist Milton Love of the Marine Science Institute at UC Santa Barbara is using several techniques to examine the status of economically important bottom fishes offshore in California. The study is part of a cooperative research project being conducted with the U.S. Geological Survey's Biological Resources Division.

While the numbers of many rockfish species have declined precipitously, one in particular -- bocaccio -- might be listed as an endangered species if it were a land animal since the populations of bocaccio have dropped down to 8 to 10 percent of their 1960 numbers, explained Love.

Rockfishes, which encompass approximately 70 species in California, have formed major fisheries -- both recreational and commercial -- in California waters since the 19th century, according to Love.

Love's research included over 50 dives using the two-person submarine Delta. He surveyed extensive rock outcrops in waters between 100 and 1,200 feet deep and found that many of the areas, even those over 100 miles from shore, harbored very few large rockfishes.

"The direct observations we made from the Delta were particularly unsettling," said Love. "It is strange to travel over acres of excellent rockfish habitat, including rock outcrops with large crevices and caves, and see almost no large fishes."

Love also analyzed rockfish data compiled by coastal electrical power generating stations which corroborated his submarine research. The resultshave been published in the recent volume 96 of the 1998 Fishery Bulletin, a publication of the National Oceanic and Atmospheric Administration of the U.S. Department of Commerce.

He explained that these results are particularly useful because they are based on unbiased samples of water taken in by the power plants. The data spanned 17 years (from 1977-1993) and comprised a minimum of several surveys per month.

Love said that the decline of rockfish is a relatively long term phenomenon that has been occurring for decades, but has increased since the late 1970s.

Love's findings are supported by similar studies (of the central Calfornia Coast) being conducted by Mary Yoklavich of the National Marine Fisheries Service. "With the exception of small, isolated rock outcrops that likely serve as natural refuges for these fishes in deep water, we too have found very few large aggregations of these important fishes," said Yoklavich.

Love and Yoklavich note that many of these areas contain swarms of small rockfishes, perhaps because the larger rockfishes that feed on the small fishes are gone. "For example, we surveyed over a mile of rocky reef at Lausen Knoll near Newport Beach in Southern California and found only three fishes larger than about 15 inches," said Love. "In the past this was a major fishing ground for large rockfishes, but now they are essentially gone."

The researchers point to overfishing and poor survival of larval rockfish as the reasons for the decline. The rockfish larvae are not surviving because plankton, their food supply, has declined due to the warming of the ocean. "Basically the (rockfish) larvae are starving to death," said Love. "They never survive the larval stage."

Both Love and Yoklavich voiced concern that the numbers of adult rockfishes of some species may have reached levels so low that recovery of the populations may be quite difficult. They said this demonstrates the need to set aside areas where fishing is not allowed to help conserve and maintain these populations.