ORCID Profile
0000-0003-4536-3000
Current Organisation
University of Kansas
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Publisher: University of Chicago Press
Date: 06-2022
DOI: 10.1086/720071
Publisher: Wiley
Date: 13-04-2020
DOI: 10.1002/WAT2.1436
Abstract: Streamflow observations can be used to understand, predict, and contextualize hydrologic, ecological, and biogeochemical processes and conditions in streams. Stream gages are point measurements along rivers where streamflow is measured, and are often used to infer upstream watershed‐scale processes. When stream gages read zero, this may indicate that the stream has dried at this location however, zero‐flow readings can also be caused by a wide range of other factors. Our ability to identify whether or not a zero‐flow gage reading indicates a dry fluvial system has far reaching environmental implications. Incorrect identification and interpretation by the data user can lead to inaccurate hydrologic, ecological, and/or biogeochemical predictions from models and analyses. Here, we describe several causes of zero‐flow gage readings: frozen surface water, flow reversals, instrument error, and natural or human‐driven upstream source losses or bypass flow. For these ex les, we discuss the implications of zero‐flow interpretations. We also highlight additional methods for determining flow presence, including direct observations, statistical methods, and hydrologic models, which can be applied to interpret causes of zero‐flow gage readings and implications for reach‐ and watershed‐scale dynamics. Such efforts are necessary to improve our ability to understand and predict surface flow activation, cessation, and connectivity across river networks. Developing this integrated understanding of the wide range of possible meanings of zero‐flows will only attain greater importance in a more variable and changing hydrologic climate. This article is categorized under: Science of Water Methods Science of Water Hydrological Processes Water and Life Conservation, Management, and Awareness
Publisher: Oxford University Press (OUP)
Date: 09-2023
Publisher: Wiley
Date: 28-08-2020
DOI: 10.1002/WAT2.1473
Abstract: Conceptual models underpin river ecosystem research. However, current models focus on continuously flowing rivers and few explicitly address characteristics such as flow cessation and drying. The applicability of existing conceptual models to nonperennial rivers that cease to flow (intermittent rivers and ephemeral streams, IRES) has not been evaluated. We reviewed 18 models, finding that they collectively describe main drivers of biogeochemical and ecological patterns and processes longitudinally (upstream‐downstream), laterally (channel‐riparian‐floodplain), vertically (surface water‐groundwater), and temporally across local and landscape scales. However, perennial rivers are longitudinally continuous while IRES are longitudinally discontinuous. Whereas perennial rivers have bidirectional lateral connections between aquatic and terrestrial ecosystems, in IRES, this connection is unidirectional for much of the time, from terrestrial‐to‐aquatic only. Vertical connectivity between surface and subsurface water occurs bidirectionally and is temporally consistent in perennial rivers. However, in IRES, this exchange is temporally variable, and can become unidirectional during drying or rewetting phases. Finally, drying adds another dimension of flow variation to be considered across temporal and spatial scales in IRES, much as flooding is considered as a temporally and spatially dynamic process in perennial rivers. Here, we focus on ways in which existing models could be modified to accommodate drying as a fundamental process that can alter these patterns and processes across spatial and temporal dimensions in streams. This perspective is needed to support river science and management in our era of rapid global change, including increasing duration, frequency, and occurrence of drying. This article is categorized under: Water and Life Nature of Freshwater Ecosystems Water and Life Stresses and Pressures on Ecosystems Science of Water Hydrological Processes
Publisher: American Geophysical Union (AGU)
Date: 13-02-2020
DOI: 10.1029/2020EO139902
Abstract: Nonperennial rivers are a major—and growing—part of the global river network. New research and science-based policies are needed to ensure the sustainability of these long-overlooked waterways.
Publisher: Oxford University Press (OUP)
Date: 07-12-2022
Abstract: Rivers that do not flow year-round are the predominant type of running waters on Earth. Despite a burgeoning literature on natural flow intermittence (NFI), knowledge about the hydrological causes and ecological effects of human-induced, anthropogenic flow intermittence (AFI) remains limited. NFI and AFI could generate contrasting hydrological and biological responses in rivers because of distinct underlying causes of drying and evolutionary adaptations of their biota. We first review the causes of AFI and show how different anthropogenic drivers alter the timing, frequency and duration of drying, compared with NFI. Second, we evaluate the possible differences in bio ersity responses, ecological functions, and ecosystem services between NFI and AFI. Last, we outline knowledge gaps and management needs related to AFI. Because of the distinct hydrologic characteristics and ecological impacts of AFI, ignoring the distinction between NFI and AFI could undermine management of intermittent rivers and ephemeral streams and exacerbate risks to the ecosystems and societies downstream.
Publisher: MDPI AG
Date: 22-01-2020
DOI: 10.3390/SU12030819
Abstract: In recent years, researchers have begun to adopt a perspective evaluating “winners and losers” regarding the consumption and value of ecosystem services. “Winners” tend to benefit from the ecosystem service and “losers” absorb most associated costs. Our study focuses on water use in Oklahoma (USA) and a plan to ert water from the Kiamichi River in southeastern Oklahoma for consumption at residences in the Oklahoma City metropolitan area. Our study is, in part, a follow-up from an initial 2013 survey of Oklahoma City residents and residents of the Kiamichi. For this paper, a survey was distributed within the state of Oklahoma to evaluate changes to ecosystem service willingness to pay and valuation. This survey also included an experimental element assessing if exposure to additional information about ecosystem services influenced respondents on ecosystem service valuation, or willingness to pay. Our results generally aligned with those found in the 2013 survey. Oklahoma City residents are not aware of where their water is coming from and are not willing to pay to protect ecosystem services, despite an overall increase in activism. Our results indicate that a smaller number of significant factors determining willingness to pay for ecosystem service maintenance were identified than the study in 2013. Exposure to additional information had no effect on peoples’ preferences. We found that public opinion surrounding environmental support is context-specific, political conservatism may not always impede valuation of environmental protections. We conclude that cultural, moral, and political values interact in their influence on expressions of valuation and willingness to pay for ecosystem services.
Publisher: MDPI AG
Date: 13-07-2020
DOI: 10.3390/W12071980
Abstract: Rivers that cease to flow are globally prevalent. Although many epithets have been used for these rivers, a consensus on terminology has not yet been reached. Doing so would facilitate a marked increase in interdisciplinary interest as well as critical need for clear regulations. Here we reviewed literature from Web of Science database searches of 12 epithets to learn (Objective 1—O1) if epithet topics are consistent across Web of Science categories using latent Dirichlet allocation topic modeling. We also analyzed publication rates and topics over time to (O2) assess changes in epithet use. We compiled literature definitions to (O3) identify how epithets have been delineated and, lastly, suggest universal terms and definitions. We found a lack of consensus in epithet use between and among various fields. We also found that epithet usage has changed over time, as research focus has shifted from description to modeling. We conclude that multiple epithets are redundant. We offer specific definitions for three epithets (non-perennial, intermittent, and ephemeral) to guide consensus on epithet use. Limiting the number of epithets used in non-perennial river research can facilitate more effective communication among research fields and provide clear guidelines for writing regulatory documents.
No related grants have been discovered for Michelle H Busch.