The vast majority of terrestrial plant species live in symbiosis with arbuscular mycorrhizal fungi (AMF). AMF and plants live in complex networks, with roots of individual plants hosting multiple AMF, and single AMF colonizing multiple plants concurrently. Through the exchange of resources, the two partners of this symbiosis can have...
Evolutionary interactions across levels of biological organization contribute to a variety of fundamental processes including genome evolution, reproductive mode transitions, species diversification, and extinction. Evolutionary theory predicts that so-called “selfish” genetic elements will proliferate when the host effective population size (N[subscrit]e) is small, but direct tests of this prediction remain...
Evolutionary interactions across levels of biological organization contribute to a variety of fundamental processes including genome evolution, reproductive mode transitions, species diversification, and extinction. Evolutionary theory predicts that so-called “selfish” genetic elements will proliferate when the host effective population size (N[subscrit]e) is small, but direct tests of this prediction remain...
Full Text:
Diversifies in
Small, but not Large, Experimental Populations of
Caenorhabditis briggsae
WendyS. Phillips1
Evolutionary interactions across levels of biological organization contribute to a variety of fundamental processes including genome evolution, reproductive mode transitions, species diversification, and extinction. Evolutionary theory predicts that so-called “selfish” genetic elements will proliferate when the host effective population size (N[subscrit]e) is small, but direct tests of this prediction remain...
As the demand for community mental health services grows, more and more counselors-in-training are being asked to face the challenge of working with high needs clients, including clients with Borderline Personality Disorder (BPD). Counselors-in-training are entering therapeutic relationships with high-risk clients without training specifically covering BPD client's unique needs. This...
Three studies were conducted related to the measurement and impact of
stream sediment fecal coliform (FC) bacteria on stream water quality. In part one
an enumeration technique for sediment FC was defined and statistically
characterized. This characterization necessitated the development of a sample
splitting mechanism, which was found to split...
This report is one of a series issued in cooperation with the Army-Navy-Civil Committee on Aircraft Design Criteria under the supervision of the Aeronautical Board. Information reviewed and reaffirmed March 1956.
Chemical and microbial soil properties were assessed in paired unfertilized and urea fertilized (>89 g N·m–2) plots in 13 second-growth Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands distributed throughout western Washington and Oregon. A decade following the termination of fertilization, fertilized plots averaged 28% higher total N in the O layer...