Bulletin (Southern California Academy of Sciences) articles from April 2004

Bulletin (Southern California Academy of Sciences) archives from April 2004

Arvicoline rodents from Kokoweef Cave, Ivanpah Mountains, San Bernardino County, California.
April 1, 2004... Abstract.--A late Pleistocene/early Holocene faunal assemblage from Kokoweef Cave (San Bernardino County, California) includes a diverse assemblage of gastropods, reptiles, birds, and mammals. Chronological control for the site consists of a...

The role of biotic and abiotic variables in determining demographic processes in an Eelgrass Meadow.
April 1, 2004... Abstract.--Using principal component analysis among biotic and abiotic variables we found coherent subsets of variables that explain biological processes such as growth, mortality and recruitment in a seagrass (Zostera marina) meadow. The...

Tropical fish species as indicator of 1997-1998 El Nino in Bahia de San Quintin, Baja California, Mexico.
April 1, 2004... Abstract.--The 1997-1998 El Nino event was characterized by rapid development, strength, and record high sea-surface temperatures in the eastern equatorial Pacific. Mobile organisms such as fishes with a tropical distribution showed a shift...

The spray nozzle of the bombardier beetle, Brachinus favicollis Erwin.
April 1, 2004... Abstract.--The Bombardier beetle (Brachinus sp., Metrius sp., Stenaptinus sp.) has been often studied due to its ability to synthesize and spray a hot, noxious combination of benzoquinones and oxygen. Abdomens of Brachinus favicollis collected...

Observations of the acoustic behavior of Hoplosphyrum boreale (Scudder): a common scaly cricket of Southern California.
April 1, 2004... Abstract.--We describe observations of the acoustic behavior of the scaly cricket Hoplosphyrum boreale (Scudder), a common scaly-cricket (Orthoptera: Gryllidae: Mogoplistinae) of southern California and the desert southwest. The long-range...

Muskrats and sage pondweed in Valle de Mexicali: opportunistic feeding on a spontaneous resource.(Research Notes)
April 1, 2004... Muskrats (Ondatra zibethicus) inhabit irrigation canals and agricultural drains in the Valle de Mexicali, Mexico (adjacent to the Imperial Valley, California) (Mellink 1995). Although local food sources have not been investigated, they are...