Documents

Understanding the impacts of artificial night-time light on wild plants and natural vegetation requires linking the knowledge gained from over a century of experimental research on the impacts of light on plants in the laboratory and glasshouse with knowledge of the intensity, spatial distribution, spectral composition and timing of light in the night-time environment.

The geographic distributions of organisms are not static, but dynamic. Over time the ranges of species shift, expand, and contract. The distributions of higher taxonomic groups such as genera, families, orders, and classes also change because their geographic ranges simply reflect the cumulative distributions of all the included species.

The purpose of this draft Land Health Evaluation (LHE) report is to evaluate whether the Arizona Standards for Rangeland Health (Standards) are being achieved on the Teacup and Whitlow Allotment.

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Materials that meet the criteria of Freedom of Information Act exemptions are not posted on this website. Culturally sensitive materials not posted here fall under this criteria.

The concepts, principles, assumptions and fundamental rules of Failure Modes and Effects Analysis (FMEA) are introduced. An application to Cerro do Lobo tailings dam is presented, with the description of the system considered, the functionalities, the potential failure modes of each component, their corresponding root causes and the sequence of effects.

In this review we discuss the characteristics and distribution of microbiotic crusts in the rangelands of Australia, their roles in soil and ecological processes and the impacts of fire and grazing. Finally we propose a new system for classifying crusts into functional groups and identify areas requiring further investigation.

This document summarizes current understanding of climate variability, climate change, climate impacts, and possible solution choices for the climate challenge, all issues that are covered in greater depth in Assessment of Climate Change in the Southwest United States.

Many hundreds of species of birds typically migrate at night, and it is well known that fires and artificial lights attract birds during migration, particularly when the sky is cloudy and the ceiling is low.

The approach to tailings storage facilities must place safety first by making environmental and human safety a priority in management actions and on-the-ground operations.

The IFTDSS Planning cycle is designed with the fuels management employee in mind.