Gary P Johnson (Former Employee)
Science and Products
Filter Total Items: 29
Exploring genetic variation and population structure in a threatened species, Noturus placidus, with whole-genome sequence data Exploring genetic variation and population structure in a threatened species, Noturus placidus, with whole-genome sequence data
The Neosho madtom (Noturus placidus) is a small catfish, generally less than 3 inches in length, unique to the Neosho-Spring River system within the Arkansas River Basin. It was federally listed as threatened in 1990, largely due to habitat loss. For conservation efforts, we generated whole-genome sequence data from 10 Neosho madtom individuals originating from 3 geographically separated...
Authors
Lynsey K. Whitacre, Mark L. Wildhaber, Gary S. Johnson, Harly J. Durbin, Troy N. Rowan, Robert D. Schnabel, Tendai Mhlanga-Mutangadura, Vernon M. Tabor, Daniel Fenner, Jared E. Decker
Applying cumulative effects to strategically advance large‐scale ecosystem restoration Applying cumulative effects to strategically advance large‐scale ecosystem restoration
International efforts to restore degraded ecosystems will continue to expand over the coming decades, yet the factors contributing to the effectiveness of long‐term restoration across large areas remain largely unexplored. At large scales, outcomes are more complex and synergistic than the additive impacts of individual restoration projects. Here, we propose a cumulative‐effects...
Authors
Heida L. Diefenderfer, Gregory Steyer, Matthew C. Harwell, Andrew J LoSchiavo, Hilary A. Neckles, David M. Burdick, Gary E. Johnson, Kate E. Buenau, Elene Trujillo, John C. Callaway, Ronald M. Thom, Neil K. Ganju, Robert R. Twilley
From theoretical to actual ecosystem services: mapping beneficiaries and spatial flows in ecosystem service assessments From theoretical to actual ecosystem services: mapping beneficiaries and spatial flows in ecosystem service assessments
Ecosystem services mapping and modeling has focused more on supply than demand, until recently. Whereas the potential provision of economic benefits from ecosystems to people is often quantified through ecological production functions, the use of and demand for ecosystem services has received less attention, as have the spatial flows of services from ecosystems to people. However, new...
Authors
Kenneth J. Bagstad, Ferdinando Villa, David Batker, Jennifer Harrison-Cox, Brian Voigt, Gary W. Johnson
A methodology for adaptable and robust ecosystem services assessment A methodology for adaptable and robust ecosystem services assessment
Ecosystem Services (ES) are an established conceptual framework for attributing value to the benefits that nature provides to humans. As the promise of robust ES-driven management is put to the test, shortcomings in our ability to accurately measure, map, and value ES have surfaced. On the research side, mainstream methods for ES assessment still fall short of addressing the complex...
Authors
Ferdinando Villa, Kenneth J. Bagstad, Brian Voigt, Gary W. Johnson, Rosimeiry Portela, Miroslav Honzák, David Batker
The misconception of ecosystem disservices: How a catchy term may yield the wrong messages for science and society The misconception of ecosystem disservices: How a catchy term may yield the wrong messages for science and society
In their recent article, Shapiro and Báldi (2014) build on the long-running narrative of “ecosystem services and disservices” (e.g., Zhang et al., 2007 ; Lyytimäki et al., 2008), describing how nature yields both benefits and harms to society. These harms include crop pests, floods, landslides, wildfires, and zoonotic disease transmission, among others. While we agree with their argument...
Authors
Ferdinando Villa, Kenneth J. Bagstad, Brian Voigt, Gary W. Johnson, Ioannis N Athanasiadis, Stefano Balbi
Quantifying and valuing ecosystem services: An application of ARIES to the San Pedro River basin, USA Quantifying and valuing ecosystem services: An application of ARIES to the San Pedro River basin, USA
A large body of research exists that identifies and values ecosystem services - the benefits that ecosystems provide to humans (MA, 2005) - and their underlying ecological processes. However, the development of software decision support tools that integrate ecology, economics and geography that can be independently used within the public, private, academic and NGO sectors is a more...
Authors
Kenneth J. Bagstad, Darius J. Semmens, Ferdinando Villa, Gary Johnson
Real-time continuous nitrate monitoring in Illinois in 2013 Real-time continuous nitrate monitoring in Illinois in 2013
Many sources contribute to the nitrogen found in surface water in Illinois. Illinois is located in the most productive agricultural area in the country, and nitrogen fertilizer is commonly used to maximize corn production in this area. Additionally, septic/wastewater systems, industrial emissions, and lawn fertilizer are common sources of nitrogen in urban areas of Illinois. In...
Authors
Kelly L. Warner, Paul J. Terrio, Timothy D. Straub, Donald Roseboom, Gary P. Johnson
Spatial dynamics of ecosystem service flows: a comprehensive approach to quantifying actual services Spatial dynamics of ecosystem service flows: a comprehensive approach to quantifying actual services
Recent ecosystem services research has highlighted the importance of spatial connectivity between ecosystems and their beneficiaries. Despite this need, a systematic approach to ecosystem service flow quantification has not yet emerged. In this article, we present such an approach, which we formalize as a class of agent-based models termed “Service Path Attribution Networks” (SPANs)...
Authors
Kenneth J. Bagstad, Gary W. Johnson, Brian Voigt, Ferdinando Villa
Modelling ecosystem service flows under uncertainty with stochiastic SPAN Modelling ecosystem service flows under uncertainty with stochiastic SPAN
Ecosystem service models are increasingly in demand for decision making. However, the data required to run these models are often patchy, missing, outdated, or untrustworthy. Further, communication of data and model uncertainty to decision makers is often either absent or unintuitive. In this work, we introduce a systematic approach to addressing both the data gap and the difficulty in...
Authors
Gary W. Johnson, Robert R. Snapp, Ferdinando Villa, Kenneth J. Bagstad
Control-Structure Ratings on the Fox River at McHenry and Algonquin, Illinois Control-Structure Ratings on the Fox River at McHenry and Algonquin, Illinois
The Illinois Department of Natural Resources-Office of Water Resources operates control structures on a reach of the Fox River in northeastern Illinois between McHenry and Algonquin. The structures maintain water levels in the river for flood-control and recreational purposes. This report documents flow ratings for hinged-crest gates, a broad-crested weir, sluice gates, and an ogee...
Authors
Timothy D. Straub, Gary P. Johnson, Jon Hortness, Joseph R. Parker
Ground-Water Flow Model for the Spokane Valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho Ground-Water Flow Model for the Spokane Valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho
This report presents a computer model of ground-water flow in the Spokane Valley-Rathdrum Prairie (SVRP) aquifer in Spokane County, Washington, and Bonner and Kootenai Counties, Idaho. The aquifer is the sole source of drinking water for more than 500,000 residents in the area. In response to the concerns about the impacts of increased ground-water withdrawals resulting from recent and...
Authors
Paul A. Hsieh, Michael E. Barber, Bryce A. Contor, Md. Akram Hossain, Gary S. Johnson, Joseph L. Jones, Allan H. Wylie
Suspended-sediment yields and stream-channel processes on Judy's Branch watershed in the St. Louis Metro East region in Illinois Suspended-sediment yields and stream-channel processes on Judy's Branch watershed in the St. Louis Metro East region in Illinois
Judy's Branch watershed, a small basin (8.64 square miles) in the St. Louis Metro East region in Illinois, was selected as a pilot site to determine suspended-sediment yields and stream-channel processes in the bluffs and American Bottoms (expansive low-lying valley floor in the region). Suspended-sediment and stream-chan-nel data collected and analyzed for Judy's Branch watershed are...
Authors
Timothy D. Straub, Gary P. Johnson, Donald P. Roseboom, Carlos R. Sierra
Science and Products
Filter Total Items: 29
Exploring genetic variation and population structure in a threatened species, Noturus placidus, with whole-genome sequence data Exploring genetic variation and population structure in a threatened species, Noturus placidus, with whole-genome sequence data
The Neosho madtom (Noturus placidus) is a small catfish, generally less than 3 inches in length, unique to the Neosho-Spring River system within the Arkansas River Basin. It was federally listed as threatened in 1990, largely due to habitat loss. For conservation efforts, we generated whole-genome sequence data from 10 Neosho madtom individuals originating from 3 geographically separated...
Authors
Lynsey K. Whitacre, Mark L. Wildhaber, Gary S. Johnson, Harly J. Durbin, Troy N. Rowan, Robert D. Schnabel, Tendai Mhlanga-Mutangadura, Vernon M. Tabor, Daniel Fenner, Jared E. Decker
Applying cumulative effects to strategically advance large‐scale ecosystem restoration Applying cumulative effects to strategically advance large‐scale ecosystem restoration
International efforts to restore degraded ecosystems will continue to expand over the coming decades, yet the factors contributing to the effectiveness of long‐term restoration across large areas remain largely unexplored. At large scales, outcomes are more complex and synergistic than the additive impacts of individual restoration projects. Here, we propose a cumulative‐effects...
Authors
Heida L. Diefenderfer, Gregory Steyer, Matthew C. Harwell, Andrew J LoSchiavo, Hilary A. Neckles, David M. Burdick, Gary E. Johnson, Kate E. Buenau, Elene Trujillo, John C. Callaway, Ronald M. Thom, Neil K. Ganju, Robert R. Twilley
From theoretical to actual ecosystem services: mapping beneficiaries and spatial flows in ecosystem service assessments From theoretical to actual ecosystem services: mapping beneficiaries and spatial flows in ecosystem service assessments
Ecosystem services mapping and modeling has focused more on supply than demand, until recently. Whereas the potential provision of economic benefits from ecosystems to people is often quantified through ecological production functions, the use of and demand for ecosystem services has received less attention, as have the spatial flows of services from ecosystems to people. However, new...
Authors
Kenneth J. Bagstad, Ferdinando Villa, David Batker, Jennifer Harrison-Cox, Brian Voigt, Gary W. Johnson
A methodology for adaptable and robust ecosystem services assessment A methodology for adaptable and robust ecosystem services assessment
Ecosystem Services (ES) are an established conceptual framework for attributing value to the benefits that nature provides to humans. As the promise of robust ES-driven management is put to the test, shortcomings in our ability to accurately measure, map, and value ES have surfaced. On the research side, mainstream methods for ES assessment still fall short of addressing the complex...
Authors
Ferdinando Villa, Kenneth J. Bagstad, Brian Voigt, Gary W. Johnson, Rosimeiry Portela, Miroslav Honzák, David Batker
The misconception of ecosystem disservices: How a catchy term may yield the wrong messages for science and society The misconception of ecosystem disservices: How a catchy term may yield the wrong messages for science and society
In their recent article, Shapiro and Báldi (2014) build on the long-running narrative of “ecosystem services and disservices” (e.g., Zhang et al., 2007 ; Lyytimäki et al., 2008), describing how nature yields both benefits and harms to society. These harms include crop pests, floods, landslides, wildfires, and zoonotic disease transmission, among others. While we agree with their argument...
Authors
Ferdinando Villa, Kenneth J. Bagstad, Brian Voigt, Gary W. Johnson, Ioannis N Athanasiadis, Stefano Balbi
Quantifying and valuing ecosystem services: An application of ARIES to the San Pedro River basin, USA Quantifying and valuing ecosystem services: An application of ARIES to the San Pedro River basin, USA
A large body of research exists that identifies and values ecosystem services - the benefits that ecosystems provide to humans (MA, 2005) - and their underlying ecological processes. However, the development of software decision support tools that integrate ecology, economics and geography that can be independently used within the public, private, academic and NGO sectors is a more...
Authors
Kenneth J. Bagstad, Darius J. Semmens, Ferdinando Villa, Gary Johnson
Real-time continuous nitrate monitoring in Illinois in 2013 Real-time continuous nitrate monitoring in Illinois in 2013
Many sources contribute to the nitrogen found in surface water in Illinois. Illinois is located in the most productive agricultural area in the country, and nitrogen fertilizer is commonly used to maximize corn production in this area. Additionally, septic/wastewater systems, industrial emissions, and lawn fertilizer are common sources of nitrogen in urban areas of Illinois. In...
Authors
Kelly L. Warner, Paul J. Terrio, Timothy D. Straub, Donald Roseboom, Gary P. Johnson
Spatial dynamics of ecosystem service flows: a comprehensive approach to quantifying actual services Spatial dynamics of ecosystem service flows: a comprehensive approach to quantifying actual services
Recent ecosystem services research has highlighted the importance of spatial connectivity between ecosystems and their beneficiaries. Despite this need, a systematic approach to ecosystem service flow quantification has not yet emerged. In this article, we present such an approach, which we formalize as a class of agent-based models termed “Service Path Attribution Networks” (SPANs)...
Authors
Kenneth J. Bagstad, Gary W. Johnson, Brian Voigt, Ferdinando Villa
Modelling ecosystem service flows under uncertainty with stochiastic SPAN Modelling ecosystem service flows under uncertainty with stochiastic SPAN
Ecosystem service models are increasingly in demand for decision making. However, the data required to run these models are often patchy, missing, outdated, or untrustworthy. Further, communication of data and model uncertainty to decision makers is often either absent or unintuitive. In this work, we introduce a systematic approach to addressing both the data gap and the difficulty in...
Authors
Gary W. Johnson, Robert R. Snapp, Ferdinando Villa, Kenneth J. Bagstad
Control-Structure Ratings on the Fox River at McHenry and Algonquin, Illinois Control-Structure Ratings on the Fox River at McHenry and Algonquin, Illinois
The Illinois Department of Natural Resources-Office of Water Resources operates control structures on a reach of the Fox River in northeastern Illinois between McHenry and Algonquin. The structures maintain water levels in the river for flood-control and recreational purposes. This report documents flow ratings for hinged-crest gates, a broad-crested weir, sluice gates, and an ogee...
Authors
Timothy D. Straub, Gary P. Johnson, Jon Hortness, Joseph R. Parker
Ground-Water Flow Model for the Spokane Valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho Ground-Water Flow Model for the Spokane Valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho
This report presents a computer model of ground-water flow in the Spokane Valley-Rathdrum Prairie (SVRP) aquifer in Spokane County, Washington, and Bonner and Kootenai Counties, Idaho. The aquifer is the sole source of drinking water for more than 500,000 residents in the area. In response to the concerns about the impacts of increased ground-water withdrawals resulting from recent and...
Authors
Paul A. Hsieh, Michael E. Barber, Bryce A. Contor, Md. Akram Hossain, Gary S. Johnson, Joseph L. Jones, Allan H. Wylie
Suspended-sediment yields and stream-channel processes on Judy's Branch watershed in the St. Louis Metro East region in Illinois Suspended-sediment yields and stream-channel processes on Judy's Branch watershed in the St. Louis Metro East region in Illinois
Judy's Branch watershed, a small basin (8.64 square miles) in the St. Louis Metro East region in Illinois, was selected as a pilot site to determine suspended-sediment yields and stream-channel processes in the bluffs and American Bottoms (expansive low-lying valley floor in the region). Suspended-sediment and stream-chan-nel data collected and analyzed for Judy's Branch watershed are...
Authors
Timothy D. Straub, Gary P. Johnson, Donald P. Roseboom, Carlos R. Sierra