Menu
Contact Us Search

Science Spotlight

Science Institute News

rss

Recent accomplishments of CDFW's scientific community


California Fish and Game Journal, Issue 102-4

California Fish and Game Journal, Issue 102-4

The latest issue of California Fish and Game, CDFW’s scientific journal, is now available online. This century-old quarterly journal contains peer-reviewed scientific literature that explores and advances the conservation and understanding of California’s flora and fauna.

A photo of the world’s first radio tagged tricolored blackbird (Agelaius tricolor) graces the cover of this issue of California Fish and Game. The bird was tagged as part of a study, the results of which are published as “Breeding chronology, movements, and life history observations of tricolored blackbirds in the California Central Coast” by Wilson et al. The tricolored blackbird is currently under review for listing under both the California and Federal endangered species acts.

Also in this issue, Overton et al. offers a fascinating observation of predation by Peregrine falcons on an endangered California Ridgway’s rail (Rallus obsoletus obsoletus), the result of environmental extremes and a series of species interactions.

Other papers published in this issue look at a predictive model for commercial catch of white seabass (Atractoscion nobilis); fecundity and reproductive potential of wild female Delta Smelt (Hypomesus transpacificus); and updated information on the length-weight relationships (LWR) and length-length relationships (LLR) and condition factors for pelican barracuda (Sphyraena idiastes) in the Gulf of California.

New in this issue is a section called “From the Archives,” which reprints articles from past issues to provide historical perspective on topics still relevant today. The first article in this series comes from Volume I, Issue I, dated 1914. It asserts that natural resources must be conserved for the use and enjoyment of the public.

Download the entire Fall Issue 102 in high resolution, or browse individual articles in low resolution.


California Native Plant Week

California Native Plant Week

California hosts approximately 6,500 different kinds of plants that occur naturally in the state, and many of these are found nowhere else in the world. Some of these plants are so rare or have been so impacted by human influence that they are at risk of permanent extinction from the wild and have been protected by state and federal laws. The California Department of Fish and Wildlife’s (CDFW) Native Plant Program is developing and implementing standardized and repeatable monitoring plans for ten state and federally listed plant species on nine CDFW Ecological Reserves throughout the state. This work is funded by a federal grant awarded in 2015.

a man kneels to look at wildflowers

One of the plants being monitored is Butte County meadowfoam (Limnanthes floccosa ssp. californica), which occurs at North Table Mountain Ecological Reserve, north of Oroville in Butte County. The reserve is on an elevated basalt mesa that was created by ancient lava flows and supports a rare type of vernal pool called Northern Basalt Flow Vernal Pools. There were only 498 Butte County meadowfoam plants found on the reserve this spring. The reserve also supports a high diversity of other plant species that erupt with bright colors in the spring and attract hordes of visitors.

Another plant being monitored is the endangered Slender-petaled thelypodium (Thelypodium stenopetalum) that occurs at Baldwin Lake Ecological Reserve, in the San Bernardino Mountains near Big Bear. The reserve is in a unique environment known as the pebble plains, which only occur in Big Bear Valley and nearby Holcomb Valley. The pebble plains were formed when glaciers receded during the Pleistocene age and mainly consist of clay soils overlain by a layer of orange and white quartzite pebbles. Slender-petaled thelypodium only grows in this rare pebble plain habitat, and only 15 plants were found on the reserve last spring. Other rare plant species such as the endangered bird-foot checkerbloom (Sidalcea pedata) are found on the reserve and in the surrounding pebble plain habitat.

The monitoring project also includes plants at Little Red Mountain, Boggs Lake, Loch Lomond, Stone Ridge, Phoenix Field, Pine Hill and Apricum Hill Ecological Reserves. The grant is funded through January 2018 and the Native Plant Program has applied for another grant to continue this project.



Recent Posts

  • Science Spotlight: Studying a “Foundation Species” in the Shadow of Mount Shasta Posted last week
    CDFW Environmental Scientist Brian Ehler measures the hind-foot length on a fawn captured near Medicine Lake for a mule deer study. CDFW Environmental Scientist Brian Ehler measures the hind-foot length on a fawn captured near Medicine Lake for a mule ...
  • Wire Cages and Hard Work Help Prevent Extinction of a Rare Native Plant Posted 2 weeks ago
    Lassics lupine grows under protective cages. Richard Macedo, Habitat Conservation Planning Branch Chief constructs a cage to protect rare, endangered Lassics lupine. Lassics lupine grows under protective cages. Biologists from three government natural resource agencies banded together this summer in an unusual ...
  • Bat Week Begins! Posted 3 weeks ago
    California leaf-nosed bats. CDFW photo by retired biologist Andy Moore. Hundreds of bats in flight. ©Dave Feliz, all rights reserved. Little brown bat with white-nose syndrome. US Fish and Wildlife Service photo. Townsend's big-eared bat in flight. National Park Service photo. The last ...
  • New issue of California Fish and Game scientific journal Posted last month
    The latest issue of CDFW’s scientific journal, California Fish and Game, is now available online. A bighorn sheep (Ovis canadensis) is featured on the cover of Volume 103, Issue 2. This is to honor the life of well-known wildlife biologist ...
  • Drinker Installation Benefits Bighorn and Other Desert Species Posted last month
    Volunteers from the Society for the Conservation of Bighorn Sheep install the second of three 2,300-gallon water tanks to provide water for wildlife in the Southern California desert. SCBS volunteer Glenn Sudmeier and Steve Marschke install plumbing fixtures for the ...
Read More »

CDFW Science Institute logo