GREEN-TREE RETENTION IN HARVEST UNITS: BOON OR BUST FOR BIODIVERSITY? i n s i d e How Much to Retain?.................................................... 3 What Pattern to Retain? .............................................. 3 A Forest Patch for a Lifeboat ..................................... 4 Demonstrating the Power of Experimental Studies ................................................... 5

Small rural Alaskan communities face many challenges surrounding rapid social and ecological change. The role of local subsistence resources may change over time because of changes in social perception, economic need, and cultural patterns of use. We look at the Bering Sea’s Pribilof Islands, comprising two very small communities, and investigate the relationship between the local residents and...

The ratiometric indicators 2 0,7 0-bis-(2-carboxyethyl)-5-(and-6)-carboxyfluorescein and Fura-2 were employed to examine, respectively, intracellular pH (pHi) and calcium ([Ca]i) changes evoked by anoxia in cultured postnatal rat hippocampal neurons at 378C. Under both HCO3 /CO2and HEPES-buffered conditions, 3-, 5or 10-min anoxia induced a triphasic change in pHi consisting of an initial fall i...

The course of intracellular pH (pHi) was followed in superfused (36 degrees C) single glomus (type I) cells of the freshly dissociated adult rat carotid body. The cells had been loaded with the pH-sensitive fluorescent dye 2',7'-(2-carboxyethyl)-5 (and -6)-carboxyfluorescein. The high K(+)-nigericin method was used for calibration. The pHi of the glomus cell at pHo 7.40, without CO2, was 7.23 +...

The role of private health insurance (PHI) within the Australian health-care system is urgently in need of comprehensive review. Two decades of universal health cover under Medicare have meant a change in the function of PHI, which is not reflected in policies to support PHI nor in the public debate around PHI. There is increasing evidence that the series of policy adjustments introduced to sup...

Antigen-presenting macrophages (M phi) were derived from day 7 cultures of bone marrow stem cells using L cell conditioned medium. The adherent bone marrow-derived macrophages (BMM phi) were 100% esterase-positive, 95% positive for C3 receptors, 93% positive for Fc receptors, and 95% actively phagocytic. Indirect immunofluorescence using anti-Ia monoclonal antibodies resulted in 60% Ia-positive...