A5040153089- Fish Ecology and Management Studies
- Aquatic Invertebrate Ecology and Behavior
- Hydrology and Sediment Transport Processes
- Wildlife Ecology and Conservation
- Freshwater macroinvertebrate diversity and ecology
- Fish biology, ecology, and behavior
- Marine and fisheries research
- Hydrology and Watershed Management Studies
- Animal Ecology and Behavior Studies
- Marine Biology and Ecology Research
- Ecology and Vegetation Dynamics Studies
- Flood Risk Assessment and Management
- Archaeology and Natural History
- Fish Biology and Ecology Studies
- Crustacean biology and ecology
- Species Distribution and Climate Change
- Marine Biology and Environmental Chemistry
- Environmental DNA in Biodiversity Studies
- Geology and Paleoclimatology Research
United States Geological Survey
2021-2025
North Carolina State University
2025
Mississippi State University
2021-2024
University of Missouri
2015-2021
Virginia Tech
2016-2018
ABSTRACT Hydrologic connectivity is a crucial determinant of aquatic ecosystem services, governing the exchange nutrients, sediments, chemicals, and biota. Various indices metrics exist for quantifying hydrologic across diverse environments scales. However, existing methodologies often fail to adequately capture lateral between lakes streams vast, low‐relief, multi‐lake floodplain systems. This study introduces novel approach specifically tailored connecting within expansive Lower...
Rehabilitation of large Anthropocene rivers requires engagement diverse stakeholders across a broad range sociopolitical boundaries. Competing objectives often constrain options for ecological restoration whereas fewer competing may exist in subset tributaries. Further, tributaries contribute toward building “portfolio” river ecosystem assets through physical and biological processes that present opportunities to enhance the resilience fishes. Our goal is review roles enhancing mainstem fish...
We designed a flexible protocol for monitoring fish species richness in nonwadeable rivers. Nine sites were sampled seasonally with six gears two physiographic regions Missouri (USA). Using resampling procedures and mixed-effects modeling, we quantified compositional overlap among gears, identified efficient gear combinations, evaluated performance across seasons. detected 25–75 per sample 89 185 fish. On average, no single >62% of observed species, but an optimized, integrated-gear four...
Abstract Understanding relationships between habitat associations for individuals and factors that limit populations is a primary challenge managers of stream fishes. Although use by can provide insight into the adaptive significance selected microhabitats, not all parameters will be significant at population level, particularly when distributional patterns partially result from degradation. We used underwater observation to quantify microhabitat selection an imperiled fish, Candy Darter...
Abstract The transformations of fish assemblages caused by reservoir cascades can be severe at the reach scale, but basin‐scale effects are less clear. However, prevailing river concepts provide a framework for predicting effects. To determine if predictions made River Continuum Concept relative to function sustained in temperate transformed into cascade, we examined longitudinal trends distribution functional traits over 23 reservoirs Tennessee River, U.S.A. In all, 115 species were...
Abstract Conservation practitioners increasingly recognize the conservation value of tributaries for supporting mainstem, large‐river specialist fishes. A tributary’s discharge at its mouth is a coarse indicator richness specialists found within tributary, but relative influences regional dispersal and local habitat underpinning this species–discharge relationship are often unknown. We sampled fishes sites two nonwadeable Missouri Mississippi rivers with contrasting prairie (Grand River) vs....
Abstract Aim Conserving stream biota could require strategies that preserve habitats conveying resistance to ecological impacts of changing land use and climate. Retrospective analyses species’ responses anthropogenic disturbances can inform such strategies. We developed a hierarchical framework contrast environmental conditions underlying persistence versus extirpation an imperilled fish, Candy Darter ( Etheostoma osburni ), over decades use. The decline E. may broadly represent the...
Large tributaries may help sustain large-river fish populations by mitigating fish-habitat losses within the highly modified great rivers of Mississippi River basin. These are likely most beneficial for species specializing on non-degraded habitat some portion their life histories. Few great-river tributaries, however, have been surveyed using methods that comprehensively target all species, resulting in uncertainty or bias reported composition many tributary assemblages. We report important...
Abstract Conservation prioritization frameworks are used worldwide to identify species at greatest risk of extinction and allocate limited resources across regions, species, populations. can be impeded by ecological knowledge gaps data deficiency, especially in freshwater inhabiting highly complex aquatic ecosystems. Therefore, we developed a flexible approach that calculates species' imperilment based on the conservation principles resiliency, redundancy, representation (i.e., “three R's”)....
The covert habits of Cryptobranchus alleganiensis (Eastern Hellbender) make direct field observations their behavior difficult. Here I provide the first video documentation in situ predation by a hellbender on spawning aggregation stream fishes. Both targeting fish and diurnal activity are behaviors rarely documented among hellbenders. present observation, however, supports previously described patterns elevated late spring hypothesized to be associated with increased foraging-activity meet...
Bigheaded carp Hypophthalmichthys spp.are invasive species native to Asia expanding in the Mississippi River Basin North America.An understanding of spatiotemporal distribution and aggregation is key establishing when where focus surveillance designed monitor expansion, managing harvest programs curb population densities.We applied a two-stage hurdle model assess three aspects bigheaded ecology: distribution, relative abundance, aggregation.Stage 1 was binary 0/1 that represented fish...
Crayfish serve critical roles in aquatic ecosystems as engineers, omnivores, and prey. It is unclear how increasingly frequent extreme-flow events warming air temperatures will affect crayfish populations, partly because there are few long-term monitoring datasets. Using a unique 10-y dataset, we asked 1) whether recruitment of crayfishes summer responded to temperature during spring brooding growing periods 2) responses were similar among 3 co-occurring species. Golden (Faxonius luteus...