Bird records for the Saddle Bag Mountain area of Lincoln and Tillamook Counties

The results of 703 observations are given; most of these were made in the 1930's by James Macnab, Jane Claire Dirks-Edmunds, Dorothy McKey-Fender, and others. These results are the most comprehensive throughout the year for any site above 1,000 ft in Lincoln County and hint that bird communities at sites above 1,400 ft are less diverse than sites nearer sea level. However, many more systematic observations throughout the year are needed to elucidate the significance of elevation on bird diversity. Two marshes on Saddle Bag Mountain are the only locations where Common Snipe appear to nest in Lincoln County

Patterns of abundance and habitat associations of earthworms in remnant forests of the Willamette Valley, Oregon

Among the most pervasive introduced animal taxa in North America are earthworms in the family Lumbricidae. Understanding their patterns of abundance is important in evaluating their potential impact on the native earthworm fauna. We examined the relationship of the abundance of introduced and native earthworm species, and compared soil and vegetative attributes associated with their abundance in five remnant forests (Alderman, Belleview, Helmick, Mallard and Mission Bottom) within the Willamette Valley, Oregon, located between the Cascade Range and the Coast Ranges, USA. We detected two genera of native earthworms, Toutellus (78.5% of native earthworms) and Argilophilus (21.5%), collectively, in 7% of the excavated soil samples. We detected non-native lumbricids at all five remnants, in 86% of the samples, and we estimated an average of 1136 kg of lumbricids/ha in the top 25cm of soil. We found a positive association between counts of lumbricids and the percent of organic matter and moisture content. Greater depth of surface organic matter and sloped terrain were associated with the presence of Toutellus. We found a positive association between abundance (counts/sample) of lumbricids and Toutellus. We found no direct evidence that the introduced earthworm fauna was impacting native earthworm species, although we failed to detect numerous native species that are presumed to be present in the Willamette Valley. We recommend an experimental approach, coupled with field observations that allow the estimation of species-specific detection probabilities, for future research into the potential impacts of introduced earthworms on the native fauna. This topic deserves further attention given the ubiquity of introduced earthworms in North America

Checklist of beetles (Coleoptera) of Canada and Alaska. Second edition

Volume: 360Start Page: 1End Page: 4