Ryan A. Peek
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View article: Projected Increases in Climate Extremes Across Global Vertebrate Diversity Hotspots
Projected Increases in Climate Extremes Across Global Vertebrate Diversity Hotspots Open
Climate change intensifies periods of climate extremes globally, threatening biodiversity. Vertebrates vulnerable to climate extremes are identified by the International Union for Conservation of Nature, though future changes in these spec…
View article: Climate change scenarios forecast increased drought exposure for terrestrial vertebrates in the contiguous United States
Climate change scenarios forecast increased drought exposure for terrestrial vertebrates in the contiguous United States Open
Anthropogenic climate change is altering patterns of extreme weather events across the planet, with far-ranging consequences for biodiversity. Increases in the frequency, duration, and severity of droughts are anticipated to substantially …
View article: Chytrid infections exhibit historical spread and contemporary seasonality in a declining stream-breeding frog
Chytrid infections exhibit historical spread and contemporary seasonality in a declining stream-breeding frog Open
Species with extensive geographical ranges pose special challenges to assessing drivers of wildlife disease, necessitating collaborative and large-scale analyses. The imperilled foothill yellow-legged frog ( Rana boylii ) inhabits a wide g…
View article: Identifying drivers of population dynamics for a stream breeding amphibian using time series of egg mass counts
Identifying drivers of population dynamics for a stream breeding amphibian using time series of egg mass counts Open
The decline in amphibian populations is one of the starkest examples of the biodiversity crisis. For stream breeding amphibians, alterations to natural flow regimes by dams, water diversions, and climate change have been implicated in decl…
View article: Priorities for synthesis research in ecology and environmental science
Priorities for synthesis research in ecology and environmental science Open
Synthesis research in ecology and environmental science improves understanding, advances theory, identifies research priorities, and supports management strategies by linking data, ideas, and tools. Accelerating environmental challenges in…
View article: Correction: Classifying California’s stream thermal regimes for cold-water conservation
Correction: Classifying California’s stream thermal regimes for cold-water conservation Open
[This corrects the article DOI: 10.1371/journal.pone.0256286.].
View article: Corrigendum: Functional Flows in Groundwater-Influenced Streams: Application of the California Environmental Flows Framework to Determine Ecological Flow Needs
Corrigendum: Functional Flows in Groundwater-Influenced Streams: Application of the California Environmental Flows Framework to Determine Ecological Flow Needs Open
A corrected figure 3 was provided with labels for each Location of Interest (LOI 1 and LOI 2) in the correct position. The previously published figure had the labels incorrectly switched. LOI 1 (Michigan Bar) is located upstream (the yello…
View article: Application of Flow-Ecology Analysis to Inform Prioritization for Stream Restoration and Management Actions
Application of Flow-Ecology Analysis to Inform Prioritization for Stream Restoration and Management Actions Open
A key challenge in managing flow alteration is determining the severity and pattern of alteration associated with the degradation of biological communities. Understanding these patterns helps managers prioritize locations for restoration a…
View article: Functional Flows in Groundwater-Influenced Streams: Application of the California Environmental Flows Framework to Determine Ecological Flow Needs
Functional Flows in Groundwater-Influenced Streams: Application of the California Environmental Flows Framework to Determine Ecological Flow Needs Open
Environmental flows, or the practice of allocating water in river systems for ecological purposes, is a leading strategy for conserving aquatic species and improving river health. However, consideration of surface-groundwater connectivity …
View article: Identifying Functional Flow Linkages Between Stream Alteration and Biological Stream Condition Indices Across California
Identifying Functional Flow Linkages Between Stream Alteration and Biological Stream Condition Indices Across California Open
Large state or regional environmental flow programs, such as the one based on the California Environmental Flows Framework, rely on broadly applicable relationships between flow and ecology to inform management decisions. California, despi…
View article: Classifying California’s stream thermal regimes for cold-water conservation
Classifying California’s stream thermal regimes for cold-water conservation Open
Stream temperature science and management is rapidly shifting from single-metric driven approaches to multi-metric, thermal regime characterizations of streamscapes. Given considerable investments in recovery of cold-water fisheries (e.g.,…
View article: Flow modification associated with reduced genetic health of a river‐breeding frog, <i>Rana boylii</i>
Flow modification associated with reduced genetic health of a river‐breeding frog, <i>Rana boylii</i> Open
River regulation or flow modification—the hydrological alteration of flow by dams and diversions—has been implicated as a cause of fundamental change to downstream aquatic ecosystems. Flow modification changes the patterns and functionalit…
View article: Understanding community assembly rules in managed floodplain food webs
Understanding community assembly rules in managed floodplain food webs Open
Community assembly has been an important topic in ecological research and theory for over a century. Recently, restoration ecologists have emphasized the use of community assembly rules, such as environmental filtering, to better inform ma…
View article: A functional flows approach to selecting ecologically relevant flow metrics for environmental flow applications
A functional flows approach to selecting ecologically relevant flow metrics for environmental flow applications Open
The science and practice of environmental flows have advanced significantly over the last several decades. Most environmental flow approaches require quantifying the relationships between hydrologic change and biologic response, but this c…
View article: A Lentic Breeder in Lotic Waters: Sierra Nevada Yellow-Legged Frog (Rana sierrae) Habitat Suitability in Northern Sierra Nevada Streams
A Lentic Breeder in Lotic Waters: Sierra Nevada Yellow-Legged Frog (Rana sierrae) Habitat Suitability in Northern Sierra Nevada Streams Open
Yarnell, Sarah M., Peek, Ryan A., Keung, Neil, Todd, Brian D., Lawler, Sharon, Brown, Cathy (2019): A Lentic Breeder in Lotic Waters: Sierra Nevada Yellow-Legged Frog (Rana sierrae) Habitat Suitability in Northern Sierra Nevada Streams. Co…
View article: The ecological importance of unregulated tributaries to macroinvertebrate diversity and community composition in a regulated river
The ecological importance of unregulated tributaries to macroinvertebrate diversity and community composition in a regulated river Open
In regulated rivers, dams alter longitudinal gradients in flow regimes, geomorphology, water quality and temperature with associated impacts on aquatic biota. Unregulated tributaries can increase biodiversity in regulated environments by co…
View article: Flow modification associated with reduced genetic health of a river-breeding frog,<i>Rana boylii</i>
Flow modification associated with reduced genetic health of a river-breeding frog,<i>Rana boylii</i> Open
River regulation or flow modification—the hydrological alteration of flow by dams and diversions—has been implicated as a cause of fundamental change to downstream aquatic ecosystems. Flow modification changes the patterns and functionalit…
View article: A freshwater conservation blueprint for California: prioritizing watersheds for freshwater biodiversity
A freshwater conservation blueprint for California: prioritizing watersheds for freshwater biodiversity Open
Conservation scientists have adapted conservation planning principles designed for protection of habitats ranging from terrestrial to freshwater ecosystems. We applied current approaches in conservation planning to prioritize California wa…
View article: Missing the Boat on Freshwater Fish Conservation in California
Missing the Boat on Freshwater Fish Conservation in California Open
Population growth and increasing water‐use pressures threaten California's freshwater ecosystems and have led many native fishes to the brink of extinction. To guide fish conservation efforts, we provide the first systematic prioritization…