The function of the mammalian brain depends on a continuous supply of O2 and glucose.
When the brain no longer receives either of these substances, loss of function occurs quickly (…

This review focuses on three levels of biodiversity: species, communities, and biomes.
Communities are assemblages of interacting species, such as spruce–fir forests or tallgrass …

Glutamate is the principal excitatory neurotransmitter of the central nervous system, but many
studies have expanded its functional repertoire by showing that glutamate receptors are …

… AJ Hansen is an assistant professor in wildlife habitat ecology in the Forest Science
Department, Hatfield Marine Science Center, Oregon State University, Newport, OR 97365. TA …

2,3-Dihydroxy-6-nitro-7-sulfamoyl-benzo(F)quinoxaline (NBQX) is an analog of the
quinoxalinedione antagonists to the non- N-methyl-D-aspartate (non-NMDA) glutamate receptor. …

Teaching and the Case Method delves into the special role of teacher and students in the
case method learning process. Schools that want to use the case method more effectively can …

… and predators and result in reduced nest success of several native species (Hansen and
Rotella 2002). PH Gude, AJ Hansen, and DA Jones (unpublished manuscript) found that 49% …

The widespread extinctions of large mammals at the end of the Pleistocene epoch have
often been attributed to the depredations of humans; here we present genetic evidence that …

Genetic analyses of permafrost and temperate sediments reveal that plant and animal DNA
may be preserved for long periods, even in the absence of obvious macrofossils. In Siberia, …

… (AJ Hansen et al., unpublished report). Of the 15 species analyzed, eight species in the
Massai Mara Reserve and one species in Amboseli declined significantly during this time. The …