A programmable information system for management and analysis of aquatic species range data in California

The decline of species worldwide is both alarming and difficult to document due to a lack of reliable information on the geospatial extent and corresponding status of a given taxon. Freshwater habitats are disproportionately degraded globally with resultant declines in populations in freshwater...

Modern departures in fire severity and area vary by forest type, Sierra Nevada and southern Cascades, California, USA

Acute changes in ecological disturbance regimes can have major consequences for ecosystems and biota, including humans, living within them. Human suppression of fire in the western United States over the last century has caused notable changes to many ecosystems, especially in lower elevation,...

Evaluation of Water Rights to Reveal Hidden Patterns and Trends in Water Resources Management

California's current water management challenges are strongly influenced by the legacy of 19th century legal doctrines, which aim to maximize the appropriation of available water for human uses and benefits. As a consequence and over time, most of the water flowing through the state's rivers and...

Incorporating Climate Change in Flow Regime Alteration Studies in Hydropower Licensing

The U.S. Federal Energy Regulatory Commission has yet to mandate incorporation of anticipated climate change effects on hydropower system operations when assessing environmental impacts from the renewal of hydropower licenses. One stated reason is the lack of specific project-level specificity...

Simulating High-Elevation Hydropower with Regional Climate Warming in the West Slope, Sierra Nevada

Water systems in snowmelt-dominated hydroregions such as California’s Sierra Nevada mountains are sensitive to regional climate change, hydropower systems in particular. In this study, a water resources management model was developed for the upper west slope Sierra Nevada to understand the...

Modeling Economic Impacts of Environmental Flows in California's Yuba River Watershed

Managing rivers is becoming more challenging with increasing demand for better environmental flow regimes, just as demand for water for hydropower and water supply are increasing and water supplies are changing due to climate change. Restoration of freshwater ecosystems, such as in the Yuba...

Progress and challenges in freshwater conservation planning

  1. Freshwater ecosystems and their associated biota are among the most endangered in the world. This, combined with escalating human pressure on water resources, demands that urgent measures be taken to conserve freshwater ecosystems and the services they provide. Systematic conservation

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Objective classification of Navarro River salmon habitat: a watershed‐based critical habitat case study

  1. Prevailing freshwater conservation approaches in the USA stem from policy-based ecosystem management directives, science-based gap analyses, and legal interpretations of critical habitats. In California, there has been no systematic prioritization of freshwater habitats critical to the

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Monitoring freshwater, estuarine and near-shore benthic ecosystems with multi-sensor remote sensing

This special issue features 15 papers focused on the use of remote sensing as applied to various aspects of freshwater, estuarine and near-shore benthic ecosystems. The work described herein is diverse, ranging across spatial and temporal scales, and making use of optical, radar and lidar...

Perennial Pepperweed Infestation on the Cosumnes River Experimental Floodplain A Report to the California Bay-Delta Authority

Riparian floodplains present a unique challenge for restoration management, in that these are, by definition, dynamic, constantly changing ecosystems. As restoration projects are initiated and progress through time, both native and invasive species can become established. During the initial...

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