Publications
Below is a list of WERC's peer-reviewed publications. If you are searching for a specific publication and cannot find it in this list, please contact werc_web@usgs.gov
Filter Total Items: 3745
Stylites, a vascular land plant without stomata absorbs CO2 via its roots Stylites, a vascular land plant without stomata absorbs CO2 via its roots
Photosynthetic organs of most higher plants normally have access to atmospheric CO2 through stomatal pores which also serve as variable valves to control the loss of H2O vapour which accompanies CO2 uptake1. The acquisition of stomata is commonly thought to have been a crucial development permitting ‘conquest’ of land and direct access of plants to atmospheric CO2. Only in desert stem...
Authors
Jon E. Keeley, C.B. Osmond, J.A. Raven
Search theory and convergent spore morphology Search theory and convergent spore morphology
No abstract available.
Authors
Jon E. Keeley
Distribution and abundance of manatees along the northern coast of the Gulf of Mexico Distribution and abundance of manatees along the northern coast of the Gulf of Mexico
A review of historical and recent records of manatee (Trichechus manatus) sightings along the coast of the northern Gulf of Mexico indicates that their numbers have declined in Texas, but increased in Louisiana and Mississippi. This is due to their extirpation in Mexico and dramatic increase along the southern Big Bend coast of northwestern peninsular Florida. The distribution of...
Authors
J. A. Powell, G. B. Rathbun
Redwood Creek channel maps Redwood Creek channel maps
No abstract available at this time
Authors
Mary Ann Madej
Channel changes at cross sections in Redwood Creek, California Channel changes at cross sections in Redwood Creek, California
No abstract available at this time
Authors
N. Varnum
Simulated effects of transplant removal from the River Mountains bighorn herd II Simulated effects of transplant removal from the River Mountains bighorn herd II
No abstract available at this time
Authors
C. L. Douglas
Post-fire recovery of California coastal sage scrub Post-fire recovery of California coastal sage scrub
Postfire regeneration of the shrub and herb vegetation on eight coastal slopes of California coastal sage scrub was studied in the first two growing seasons after fire. All shrub species resprouted with the exception of the suffrutescent Lotus scoparius, though it is not known if this species was alive prior to the fire. It was estimated that 70% of the prefire shrub populations...
Authors
Jon E. Keeley, Sterling C. Keeley
Breeding biology of Pacific white-fronted geese Breeding biology of Pacific white-fronted geese
Nesting ecology of Pacific white-fronted geese (Anser albifrons frontalis) was studied on a 9.9-km2 area on the Yukon-Kuskokwim (Y-K) Delta, Alaska, during 1977-79. Availability of nesting habitat varied considerably among years because of differences in time of snow- and icemelt. Mean clutch size was 3.7 eggs in the late spring thaw year and 5.2 and 5.7 eggs in early snowmelt years...
Authors
Craig R. Ely, Dennis G. Raveling
Simulated effects of transplant removal from the River Mountains bighorn herd II Simulated effects of transplant removal from the River Mountains bighorn herd II
No abstract available at this time
Authors
C. L. Douglas, D.M. Leslie
New raptor banding station at Pt. Diablo, Golden Gate National Recreation Area, California Second Biennial Conference of Research in California's National Parks New raptor banding station at Pt. Diablo, Golden Gate National Recreation Area, California Second Biennial Conference of Research in California's National Parks
No abstract available at this time
Authors
J. A. Howell, W. Shor