P.M. Johnson | Geology Reports

USGS1997

Migration by radio-tagged pacific golden-plovers from hawaii to Alaska, and their subsequent survival

Many Pacific Golden-Plovers ( Pluvialis fulva ) and other shorebirds winter in the Hawaiian Islands. This is the first landfall for mid-Pacific migrants after overwater flights of 4,000 km or more from Alaska (Johnson et al. 1989, Johnson and Connors 1996). Previous findings (sightings of marked birds and wing-length measurements) showed Alaska affinities for golden-plovers wintering in Hawaii (Johnson and Connors 1996), but there had been no attempt to demonstrate movements between the two regions using radiotelemetry. We made such an effort in spring 1996 by radio-tagging plovers on wintering grounds in Hawaii just before their migration. Some of these birds were later found at three sites in Alaska, including a breeding ground,

The Auk↗

USGS1994

Total water withdrawals in Mississippi, 1990

During 1990, the amount of water withdrawn from ground- and surface-water sources in Mississippi was about 3,600 Mgal/d (million gallons per day). Of this amount, 91 percent, or 3,300 Mgal/d, was withdrawn from freshwater sources. Of the total freshwater withdrawals, about 82 percent, or 2,700 Mgal/d, was withdrawn from ground-water sources. Total water withdrawals in Mississippi in 1990 for eight categories of use were as follows: irrigation, 1,900 Mgal/d; thermoelectric power, 700 Mgal/d; aquaculture, 400 Mgal/d; public supply, 320 Mgal/d; industrial and mining, 270 Mgal/d; domestic, 33 Mgal/d; commercial, 16 Mgal/d; and livestock, 16 Mgal/d. Overall, total withdrawals increased by 20 percent from 1985 to 1990, although the total population decreased about 2 percent. During the same period, total freshwater withdrawals increased by about 17 percent. Total saline with- drawals increased by about 60 percent from 1985 due to an increase in salin withdrawals for thermo- electric power generation. Total fresh and saline surface-water withdrawals decreased by about 6 percent from 1985, due to decrease in surface-water withdrawals for irrigation. Fresh ground-water withdrawals in Mississippi increased by about 33 percent, primarily due to an increase in irrigation. Since 1960, total ground- and surface-water with- drawals increased 70 percent for the same period. Irrigation had the greatest increase in with- drawals since 1960, with a 269 percent increase. Public supply had the second greatest, with a 178 percent increase.

Open-File Report↗