Ecological research. Gatewayed to ecolog-l@umdd.umd.edu. Readers: 14000 (0.2%) {59%} Mesgs per month/day: 523/17 {49%} Crossposting: 8% {35%} Megs per month/day: 1.0/0.033 {56%} Sites reciving this Group: 62% Cost ratio ($US/month/rdr): 0.04