Biologist to head US Forest Service

Development history and bibliography of the US Forest Service crown-condition indicator for forest health monitoring.

Comprehensive assessment of individual-tree crown condition by the US Department of Agriculture, Forest Service, Forest Inventory and Analysis (FIA) Program has its origins in the concerns about widespread forest decline in Europe and North America that developed in the late 1970s and early 1980s. Programs such as the US National Acid Precipitation Assessment Program, US National Vegetation Sur...

Usda Forest Service

USDA Forest Service

Wildland fire is an important disturbance agent in the western US and globally. However, the natural role of fire has been disrupted in many regions due to the influence of human activities, which have the potential to either exclude or promote fire, resulting in a ‘‘fire deficit’’ or ‘‘fire surplus’’, respectively. In this study, we developed a model of expected area burned for the western US ...

A radiation biologist looks to the future.

Once again we stand on a pinnacle of time. Backward we look to a year that has gone. Forward we look to the year ahead. Except that this particular pinnacle also separates the centuries and the millennia. Everyone, in every field, is taking stock: Where have we been and where are we going? We celebrate 100 years of radiation research. As the nineteenth century became the twentieth, X-rays had a...

Philosophy of a Biologist *

A quarter century is, indeed, a rather brief period to allow for the development of a philosopher, and yet, though I make no claim to such a title, I choose to preface the little I have to say by stating that it might be termed the "philosophy of a biologist." Perhaps I should also add that I can hardly qualify as a biologist, since my activities throughout the period in question have been-conf...