A5055196243- Fish Ecology and Management Studies
- Freshwater macroinvertebrate diversity and ecology
- Hydrology and Sediment Transport Processes
- Soil and Water Nutrient Dynamics
- Aquatic Invertebrate Ecology and Behavior
- Hydrology and Watershed Management Studies
- Isotope Analysis in Ecology
- Wildlife Ecology and Conservation
- Fire effects on ecosystems
- Fish Biology and Ecology Studies
- Fish biology, ecology, and behavior
- Soil erosion and sediment transport
- Environmental DNA in Biodiversity Studies
- Species Distribution and Climate Change
- Wastewater Treatment and Nitrogen Removal
- Land Use and Ecosystem Services
- Water Quality and Resources Studies
- Marine and fisheries research
- Animal Ecology and Behavior Studies
- Water Quality Monitoring Technologies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Coastal wetland ecosystem dynamics
- Identification and Quantification in Food
- Archaeology and Natural History
- Ecology and Vegetation Dynamics Studies
Idaho State University
2015-2024
Government Communications Headquarters
2017
Utah State University
2016
United States Geological Survey
2016
Oregon State University
2005-2016
Oklahoma Biological Survey
2012
University of Oklahoma
2012
University of Maine
2012
University of Wisconsin–Madison
2012
Simon Fraser University
2012
Summary 1. Streams and their adjacent riparian zones are closely linked by reciprocal flows of invertebrate prey. We review characteristics these prey subsidies strong direct indirect effects on consumers recipient food webs. 2. Fluxes terrestrial invertebrates to streams can provide up half the annual energy budget for drift‐feeding fishes such as salmonids, despite fact that input occurs principally in summer. Inputs appear highest from closed‐canopy with deciduous vegetation vary markedly...
Habitat alteration and biotic invasions are the two leading causes of global environmental change biodiversity loss. Recent innovative experiments have shown that habitat disturbance can drastic effects cascade to adjacent ecosystems by altering flow resource subsidies from donor systems. Likewise, exotic species could alter affect distant food webs, but very few studies tested this experimentally. Here we report evidence a large-scale field experiment in northern Japan invasion nonnative...
The distribution and abundance of bull trout (Salvelinus confluentus) spawning were affected by geomorphology hyporheic groundwater - stream water exchange across multiple spatial scales in streams the Swan River basin, northwestern Montana. Among tributary streams, redds increased with area alluvial valley segments that longitudinally confined geomorphic knickpoints. all segment types, primarily found these bounded segments, which possessed complex patterns extensive upwelling zones. Bull...
An experiment in >1000 river and riparian sites found spatial patterns controls of carbon processing at the global scale.
Dams impound the majority of rivers and provide important societal benefits, especially daily water releases that enable on-peak hydroelectricity generation. Such “hydropeaking” is common worldwide, but its downstream impacts remain unclear. We evaluated response aquatic insects, a cornerstone river food webs, to hydropeaking using life history–hydrodynamic model. Our model predicts aquatic-insect abundance will depend on basic life-history trait—adult egg-laying behavior—such open-water...
Measurements of groundwater–stream water interactions are increasingly recognized as important to understanding the ecology fishes and other organisms in stream riparian ecosystems. However, standard measurement techniques often feasible only at small spatial scales, areas with easy access, or systems relatively fine substrata. We developed simple new for installing minipiezometers obtaining estimates vertical hydraulic gradient, conductivity, specific discharge gravel cobble streambeds that...
Physical characteristics of riverine habitats, such as large wood abundance, pool geometry and riparian vegetation cover, surface flow conditions, have traditionally been thought to constrain fish production in these ecosystems. Conversely, the role food resources (quantity quality) controlling has received far less attention consideration, though they can also be key productivity drivers. Traditional freshwater web illustrations typically conveyed notion that most is produced within local...
Nearly all ecosystems have been altered by human activities, and most communities are now composed of interacting species that not co‐evolved. These changes may modify interactions, energy material flows, food‐web stability. Although structural to widely reported, few studies linked such dynamic attributes patterns flow. Moreover, there tests stability theory in highly disturbed intensely managed freshwater ecosystems. Such synthetic approaches needed for predicting the future trajectory...
Large dams have been constructed on rivers to meet human demands for water, electricity, navigation, and recreation. As a consequence, flow temperature regimes altered, strongly affecting river food webs ecosystem processes. Experimental high-flow dam releases, i.e., controlled floods, implemented the Colorado River, U.S.A., in an effort reestablish pulsed flood events, redistribute sediments, improve conditions native fishes, increase understanding of how operations affect physical...
Although numerous studies have attempted to place species of interest within the context food webs, such efforts generally occurred at small scales or disregard potentially important spatial heterogeneity. If web approaches are be employed manage species, needed that evaluate multiple habitats and associated webs interactions in which these participate. Here, we quantify sustain rearing salmon steelhead a floodplain landscape Methow River, Washington, USA, location where restoration has been...
Quintas-Soriano, C., J. Brandt, K. Running, C. V. Baxter, D. M. Gibson, Narducci, and A. Castro. 2018. Social-ecological systems influence ecosystem service perception: a Programme on Ecosystem Change Society (PECS) analysis. Ecology 23(3):3. https://doi.org/10.5751/ES-10226-230303
ABSTRACT Landscape perspectives in riverine ecology have been undertaken increasingly the last 30 years, leading aquatic ecologists to develop a diverse set of approaches for conceptualizing, mapping and understanding ‘riverscapes’. Spatiotemporally explicit rivers their biota nested within socio‐ecological landscape now provide guiding principles inland fisheries watershed management. During two decades, scientific literature on riverscapes has increased rapidly, indicating that term...
ABSTRACT The geomorphic template of streams and rivers exerts strong controls on the structure function aquatic ecosystems. However, relationships between stream geomorphology ecosystem are not always clear have been investigated equally across spatial scales. In montane regions, often alternate canyon‐confined segments unconfined floodplain segments. Yet, few studies evaluated how this pattern influences Here, we compared five confined river to paired in terms allochthonous inputs, primary...
Abstract We review the ecology and conservation of three lesser-known chars (genus Salvelinus): Dolly Varden (S. malma), white-spotted char leucomaenis), bull trout confluentus). is distributed across northern Pacific Rim co-occurs with at southern extremes its range. In contrast, are naturally isolated, former restricted to North America latter in northeastern Asia. Though range overlaps two other chars, it most closely related Arctic alpinus), whereas sister taxa. Each species exhibits...
Abstract Introductions of nonnative salmonids, such as rainbow trout Oncorhynchus mykiss and brown Salmo trutta , have affected native fishes worldwide in unforeseen undesirable ways. Predation other interactions with been hypothesized contributing to the decline (including endangered humpback chub Gila cypha ) Colorado River, Grand Canyon. A multiyear study was conducted remove fish from a 15‐km segment River near Little confluence. We evaluated how sediment, temperature, prey availability,...
We investigated the midterm effects of wildfire (in this case, five years after fire) varying severity on periphyton, benthic invertebrates, emerging adult aquatic insects, spiders, and bats by comparing unburned sites with those exposed to low (riparian vegetation burned but canopy intact) high (canopy completely removed) wildfire. observed no difference in periphyton chlorophyll a or ash-free dry mass among different burn categories did observe significantly greater biomass invertebrates...
The River Continuum Concept (RCC) predicts that food webs (and, in particular, invertebrates) of rivers temperate, forested drainages should exhibit a longitudinal gradient from reliance on terrestrially derived organic matter (e.g., seasonally shed leaves) the headwaters to autochthonous sources algae) mid-orders, suspended material larger rivers. This prediction has been evaluated by comparisons macroinvertebrate communities terms functional feeding groups (FFGs), but such an approach...
Rivers and streams contribute to global carbon cycling by decomposing immense quantities of terrestrial plant matter. However, decomposition rates are highly variable large-scale patterns drivers this process remain poorly understood. Using a cellulose-based assay reflect the primary constituent detritus, we generated predictive model (81% variance explained) for cellulose across 514 globally distributed streams. A large number variables were important predicting decomposition, highlighting...
We estimated past and future hydrographs patterns of ecosystem metabolism in a fifth-order river the western United States, where water use climate change are both expected to alter hydrology immediate future. first reconstructed unregulated hydrograph estimate how current has been altered. Due consumptive use, 95% as irrigation, discharge during summer (July-September) was 70% lower than would occur if unregulated. then predicted including effects change; magnitude flow changes were minor...
The effects of wildfire can alter the structure stream insect assemblages. Post-fire shifts to dominance by r-strategist taxa could drive increases in productivity primary consumer and predatory insects, but this possibility has not been explicitly investigated. Likewise, extent duration such might be mediated fire severity, hypothesis also evaluated. We report results from a comparative study that examined mid-term (5–10 y post-fire) varying severity on assemblage composition measured terms...
Summary 1. Streams are highly connected to their landscapes and so easily altered by multiple stressors that affect both uplands riparian zones, the streams themselves. These include dams diversions, channelisation, deforestation, water pollution, biological invasions climate change. 2. We review research conducted in Hokkaido Island, northern Japan, which measured effects of many these on stream food webs fluxes invertebrates from zone feed aquatic terrestrial consumers. About half energy...