David P. Braun

TL;DR: In this article, the authors proposed a method for assessing the degree of hydrologic alteration attributable to human influence within an ecosystem, referred to as the "Indicators of Hydrologic Alteration".

TL;DR: In this paper, the authors proposed a new approach for setting streamflow-based river ecosystem management targets and this method is called the "Range of Variability Approach" (RVA), which derives from aquatic ecology theory concerning the critical role of hydrological variability, and associated characteristics of timing, frequency, duration and rates of change, in sustaining aquatic ecosystems.

TL;DR: In this article, the threats to imperiled freshwater fauna in the U.S. were assessed through an experts survey addressing anthropogenic stressors and their sources, which pointed to altered sediment loads and nutrient inputs from agricultural nonpoint pollution; interference from exotic species; and altered hydrologic regimes associated with impoundment operations as the three leading threats nationwide, accompanied by many lesser but still significant threats.

TL;DR: In this article, the authors demonstrate use of the "Range of Variability Approach" for assessing hydrologic alteration at available streamgauge sites throughout a river basin, and illustrate a technique for spatially mapping the degree of hydrological alteration for river reaches at and between streamgaguge sites.

TL;DR: In this article, the authors argue that these assumptions rest on shaky ground, in particular on questionable concepts of causation, and that knowledge of them will result in more accurate interpretations of material records of past social conditions in any culture-historical setting.