The 1989 Exxon Valdez oil spill was a major perturbation of nearshore habitats of Prince William Sound, a wintering area for harlequin ducks (Histrionicus histrionicus). This research was designed to evaluate harlequin duck population recovery from the oil spill from 1995 to 1998, using a demographic approach to assess both...
The main objective of this project was to compare on-farm measurement techniques for estimating N-contributions from cover crops using 1) separated species lab tests (a standard experimental method), 2) bulked species lab tests, 3) fresh weight, 4) dry weight and 5) canopy height and density. We also recorded relative weed...
, ...............................................................G A. Waggoner 77
Lane County,
how Jim Floated In,
95
Anecdotes of Early Days, Samuel A. Clarke
Published July 1975. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published 2000. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published September 1973. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The biology of the two external Acarapis mites of honey bees,
Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler
was studied. It was observed that both Acarapis species have similar
developmental period (8-9 days) with males emerging earlier than
females.
Mite load and infestation rate of A. dorsalis decreased as bees...