S. Kyle McKay's research while affiliated with University of Georgia and other places

Publications (41)

Article
Global environmental factors (e.g., extreme weather, climate action failure, natural disasters, human environmental damage) increasingly threaten coastal communities. Shorelines are often hardened (seawalls, bulkheads) to prevent flooding and erosion and protect coastal communities. However, hardened shorelines lead to environmental degradation and...
Article
Advancing social equity has been implicitly and explicitly central to water resources policy for decades. Yet, equity remains largely outside of standard water resources planning and management practices. Inclusion of equity within water resources infrastructure is inhibited by barriers including an incomplete conceptual understanding of equity, a...
Article
Understanding species' associations with physical habitat conditions is a fundamental goal of ecology. For organisms that occupy lotic ecosystems, relationships to streamflow are of particular importance, but these associations are unstudied for most species. We tested the predictability of fish–microhabitat relationships in river shoals (shallow,...
Technical Report
Full-text available
Habitat suitability models have been widely adopted in ecosystem management and restoration to assess environmental impacts and benefits according to the quantity and quality of a given habitat. Many spatially distributed ecological processes require application of suitability models within a geographic information system (GIS). This technical repo...
Article
Full-text available
Urban streams can provide amenities to people living in cities, but those benefits are reduced when streams become degraded, potentially even causing harm (disease, toxic compounds, etc.). Governments and institutions invest resources to improve the values and services provided by urban streams; however, the conception, development, and implementat...
Technical Report
Full-text available
Oyster Reef Connectivity: Ecological Benefits and Associated Vulnerabilities
Article
Full-text available
Coastal communities around the world are facing increased coastal flooding and shoreline erosion from factors such as sea-level rise and unsustainable development practices. Coastal engineers and managers often rely on gray infrastructure such as seawalls, levees and breakwaters, but are increasingly seeking to incorporate more sustainable natural...
Article
Full-text available
Natural infrastructure (NI) development, including ecosystem restoration, is an increasingly popular approach to leverage ecosystem services for sustainable development, climate resilience, and biodiversity conservation goals. Although implementation and planning for these tools is accelerating, there is a critical need for effective post-implement...
Article
Full-text available
Understanding the effects of hydrology on fish populations is essential to managing for native fish conservation. However, despite decades of research illustrating streamflow influences on fish habitat, reproduction, and survival, biologists remain challenged when tasked with predicting how fish populations will respond to changes in flow regimes....
Poster
Full-text available
Recent results from two studies (of a three part project) evaluating 1) how ecological inference varies with hydraulic model complexity and 2) how model complexity influences environmental flow recommendations.
Article
In May 2020, the New York City (NYC) Mayor’s Office of Climate Resiliency (MOCR) began convening bi-weekly discussions, called the Rapid Research and Assessment (RRA) Series, between City staff and external experts in science, policy, design, engineering, communications, and planning. The goal was to rapidly develop authoritative, actionable inform...
Poster
Full-text available
Preliminary results of how varying the resolution and strategy of data collection and model complexity affected fish habitat availability and diversity and water management recommendations.
Article
Full-text available
Freshwater is essential to human communities and stream ecosystems, and governments strive to manage water to meet the needs of both people and ecosystems. Balancing competing water demands is challenging, as freshwater resources are limited and their availability varies through time and space. One approach to maintain this balance is to legally ma...
Article
Full-text available
Dams, road crossings, and water withdrawals extensively fragment rivers, and watersheds often contain hundreds or thousands of barriers, some of which no longer meet societal purposes. Accordingly, both conservationists and infrastructure managers are faced with the challenge of prioritizing barriers for repair, replacement, or removal. Candidate p...
Article
Full-text available
The ability to predictively link river hydrology to ecological effects (i.e., flow-ecology relationships) is central to understanding consequences of alternative freshwater management strategies and transparently making trade-offs. While myriad techniques for developing flow-ecology relationships exist, water managers are often concerned about not...
Article
Full-text available
Environmental management decisions increasingly rely on quantitative ecological models to forecast potential outcomes of management actions. These models are becoming increasingly complex through the integration of processes from multiple disciplines (e.g., linking engineering and ecological models). Understandably, these models are often viewed as...
Article
Freshwater migratory shrimp in Puerto Rico depend on watershed connectivity, from stream headwaters to the ocean, to complete their life cycle. Moreover, shrimp populations in different watersheds are known to be connected in an island‐wide metapopulation. However, low‐head dams paired with water intakes on streams draining the El Yunque National F...
Presentation
We compared monthly biomass of major primary producer types (macrophytes, benthic algae, filamentous algae, and phytoplankton) over the course of two years with metrics of streamflow. This presentation contains preliminary results from a 3-year study.
Article
Full-text available
Here we provide an empirical hydrologic foundation to inform water management decisions in the El Yunque National Forest (EYNF) in eastern Puerto Rico. Tropical watershed hydrology has proven difficult to quantify due to high rainfall variability, high evapotranspiration rates, variation in forest canopy interception and storage, and uncertain hydr...
Article
Full-text available
This study examines the impact of projected land use changes in the context of growing production of industrial wood pellets coupled with expected changes in precipitation and temperature due to the changing climate on streamflow in a watershed located in the northeastern corner of the Oconee River Basin. We used the Soil and Water Assessment Tool...
Technical Report
Full-text available
Natural resource managers frequently face difficult decisions, many of which involve diverse stakeholders, competing objectives, multiple management options, and uncertainty of outcomes. Participatory decision-making has emerged as an effective approach for addressing such decisions. This approach hinges on stakeholder engagement-a process that inc...
Article
Full-text available
A ground penetrating radar (GPR) and root excavation study were conducted to determine the efficacy of GPR for estimating subsurface tree root volume. The survey was conducted in sandy soil, which is favorable for GPR imaging. The tree was a loblolly pine (Pinus taeda) that was isolated from other trees to minimize outside influences. GPR antenna f...
Article
Full-text available
Well-informed river management decisions rely on an explicit statement of objectives, repeatable analyses, and a transparent system for assessing trade-offs. These components may then be applied to compare alternative operational regimes for water resource infrastructure (e.g., diversions, locks, and dams). Intra- and inter-annual hydrologic variab...
Article
Water resources and transportation infrastructure such as dams and culverts provide countless socio-economic benefits; however, this infrastructure can also disconnect the movement of organisms, sediment, and water through river ecosystems. Trade-offs associated with these competing costs and benefits occur globally, with applications in barrier ad...
Article
Freshwater management requires balancing and tradingoff multiple objectives, many of which may be competing. Ecological needs for freshwater are often described in terms of environmental flow recommendations (e.g., minimum flows), and there are many techniques for developing these recommendations, which range from hydrologic rules to multidisciplin...
Article
Hydrologic connectivity is critical to the structure, function, and dynamic process of river ecosystems. Dams, road crossings, and water diversions impact connectivity by altering flow regimes, behavioral cues, local geomorphology, and nutrient cycling. This longitudinal fragmentation of river ecosystems also increases genetic and reproductive isol...
Conference Paper
Dams, road crossings, and water diversions disconnect watersheds for fish movement and migration. The cumulative effect of these structures can be substantial, even when individual barriers have negligible impact. Rivers may be reconnected through dam removal and other means of fish passage improvement (e.g., fish ladders). Here, we apply a graph-t...
Article
Woody riparian vegetation provides numerous ecological benefits such as stabilizing streambanks, storing and cycling nutrients, shading streams and providing habitat for wildlife. However, vegetation also increases hydraulic roughness and reduces the effective flow area, resulting in an increased water surface elevation for a given streamflow. Bala...
Technical Report
Full-text available
OVERVIEW: Managers and practitioners working to restore ecosystems require means to analyze complex trade-offs in a quantifiable, rational, consistent, and transparent manner. Metrics are measurable properties that quantify the degree to which objectives have been achieved. In this way, metrics measure progress toward goals and objectives, raise aw...
Article
Full-text available
As demand on freshwater resources increases, managers are increasingly tasked with identifying water withdrawal, storage, and management strategies that minimize impacts on aquatic species. Identifying critical features of the flow regime that sustain particular ecological processes can be difficult due to site and species-specific characteristics....
Article
Full-text available
Under rapid land use change, high demand on freshwater ecosystem services, and a growing appreciation for the value of functioning ecosystems, the Appalachian Piedmont has developed a multi-million dollar stream restoration industry. A comprehensive understanding of ecosystem structure, function, and process is necessary to effectively plan, design...
Article
Full-text available
OVERVIEW: This technical note seeks to clarify concepts of metric development and application for U.S. Army Corps of Engineers (USACE) ecosystem restoration projects. Metrics are herein defined as measurable system properties that quantify the degree of achieving objectives. Metric lexicon, types, and policies are reviewed to adequately provide rea...

Citations

... Water may be allocated equitably, distributed equitably, and even accessed equitably, but if people are unable to derive benefits from it, the end result is not social equity. So, water equity should be judged by the final situation of people, and the distribution of the totality of benefits from water (Peña 2011). Irrespective of the region in an IWS situation, the consumers mostly secure their water supply through storing water during the time of supply. ...
... Two papers in this special series (Kaushal et al. 2022) demonstrate the need and value of early, meaningful stakeholder engagement in restoring urban streams and mitigating stream degradation. Scoggins et al. (2022) build on both the experiences of organizers, facilitators, and participants in the place-based case studies of the SUSE5 meeting and the authors' years of professional experiences to articulate a vision for how we can elevate the role of community stakeholders in urban stream restorations. Importantly, their vision involves working to concurrently restore the ecological integrity of the stream ecosystem and repair racial and socio-economic inequities suffered by communities living around the stream. ...
... However, the assumption made here that variation from natural conditions can be expected to be detrimental to native species is both intuitive and well-founded (Poff and Zimmerman, 2010). Additionally, current interest in instream flows is likely to elucidate flow-ecology relationships, including potential thresholds of human alteration to aquatic systems (Freeman et al. 2022). Thus, laying the framework for hydroecological risk assessment now could guide research and application in the near future, as hydroecological understanding and predictive capabilities increase. ...
... This study has several important limitations, partly due to the short time frame of study planning and implementation that was necessary to address the urgent question of how people were using UGS during the early stages of the COVID-19 pandemic; the timeliness of these results enabled us to share them with the NYC Mayor's Office of Climate Resiliency (MOCR) Rapid Research and Assessment (RRA) series (Kyrkjebo et al., 2021) for consideration in COVID-19 response planning. Our recruitment method was employed to receive responses rapidly, with the tradeoff of obtaining a relatively large but biased sample in a short time period. ...
... Implementing e-flows effectively requires considering the social, political, and economic factors (i.e., local/cultural water use, knowledge, and traditions; public and political support; funding, etc.) in concert with traditional biophysical aspects (i.e., hydrographs, flow-ecology relationships, etc.; Arthington, Kennen, et al., 2018;Jackson et al., 2015). However, despite this recognition of the need to incorporate social, political, and economic factors in e-flows frameworks, integration is still lacking (Anderson et al., 2019;Chappell et al., 2020). In water-limited systems, the challenge of addressing these factors is exacerbated because it involves balancing complex trade-offs between supporting freshwater ecosystem function through e-flows while not disrupting societal water needs. ...
... Across the United States there are millions of culverts at road-stream crossings, allowing 18 for safe transport across waterways and flood management (Martin 2019, McKay et al 2020. 19 ...
... A large interagency study of streams within the Lake Superior Basin of Minnesota developed a classification system (Cai et al. 2015) that was used to compute environmental flow statistics (Herb et al. 2015a) and develop models (Herb et al. 2015b) to examine changes to stream communities based on predicted climate and landscape changes in Minnesota (Herb et al. 2015c). In addition, McKay et al. (2019) used modeled flow data to develop flow-ecology relations for streams in the Minnesota River Basin and applied relations to six future land-use scenarios. Finally, Poff and Allan (1995) found significant relations between hydrologic factors computed from measured streamflow data and fish assemblage data collected in Minnesota and Wisconsin that could not be explained by zoogeographic constraints; of the nine sites in Minnesota, seven were part of the Minnesota River Basin in southern Minnesota. ...
... In the past, ground penetrating radar technology has been widely used in root character detection to understand the growth status of vegetation, including thick-root system structure, thick-root diameter, thick-root biomass and thick-root volume (Hruska et al., 1999;Wu et al., 2014;Ohashi et al., 2019), confirming the feasibility of using GPR technology to detect roots. Thus, using GPR technology to detect root systems and estimate the mechanical function of a root system on slope reinforcement has promising application prospects (Butnor et al., 2003;Raz et al., 2013;Zhu et al., 2014;Butnor et al., 2016;Simms et al., 2017). ...
... Multivariate network analysis, unlike standard species richnessbased multifunctionality methods that aggregate measures of ecosystem functions (Bradford et al., 2014), allows us to trace and investigate each relationship to the level of individual species, traits, or functional groups. Such transparency helps to reduce the risk of the phenomenon called "the black box" that is often used as a metaphor in the context of ecological research where the internal workings of the systems are not clear and cannot be readily understood (Herman et al., 2019). The transparency of connections as presented in our multivariate network analysis helps explaining the complexity behind ecosystem multifunctionality and can promote the use of ecosystem multifunctionality framework among decision-makers. ...
... Evaluating the efficiency of these 4 actions for improving community involvement in urban stream restoration could lead to improved outcomes. Omission of any actions, or foregoing the engagement of strong community stakeholders, may compromise the integrity of community or stream restoration outcomes (Crawford et al. 2017). ...