Alisa W. Coffin

Alisa W. Coffin
United States Department of Agriculture | USDA · Agricultural Research Service (ARS)

PhD

About

47
Publications
18,477
Reads
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1,138
Citations
Introduction
My goal is to lead applied research projects on land change science and landscape ecosystem dynamics, addressing the complexities of coupled human and natural systems, including their resiliency and sustainability. In particular, my objectives include conducting applied geographic research focused on resource conservation issues, such as anthropogenic disturbance regimes in coastal and terrestrial ecosystems, their driving forces and ecological effects.
Additional affiliations
August 2017 - present
University of Georgia
Position
  • Professor
January 2015 - present
United States Department of Agriculture
Position
  • Research Ecologist
November 2013 - May 2014
Colorado Mesa University
Position
  • Professor (Associate)
Description
  • Lecturer of Geography. Spring 2014 -- World Regional Geography, Montrose, CO, campus.
Education
August 1999 - May 2009
University of Florida
Field of study
  • Geography
September 1990 - May 1993
Harvard University
Field of study
  • Landscape Architecture
August 1980 - October 1985
Rutgers, The State University of New Jersey
Field of study
  • Environmental Studies

Publications

Publications (47)
Article
Full-text available
Transportation infrastructure affects the structure of ecosystems, the dynamics of ecosystem function, and has direct effects on ecosystem components, including their species composition. Clearly, the construction of transport lines results in the direct destruction and removal of existing ecosystems, and the reconfiguration of local landforms. How...
Article
Full-text available
Precision agriculture (PA) is the application of management decisions based on identifying, quantifying, and responding to space-time variability. However, knowledge of crop pest responses to within-field environmental variability, and the spatial distribution of their natural enemies, is limited. Quantitative methods providing insights on how pest...
Article
Full-text available
Agriculture and natural systems interweave in the southeastern US, including Florida, Georgia, and Alabama, where topographic, edaphic, hydrologic, and climatic gradients form nuanced landscapes. These are largely working lands under private control, comprising mosaics of timberlands, grazinglands, and croplands. According to the “ecosystem service...
Article
Full-text available
Road networks form the basic transportation system for most of the world's inhabitants, stimulating local and regional economies. Scientific advances in recent years have revealed that this vast, growing, planetary construction boom has been occurring mostly in non-urban environments, and most aggressively in developing frontiers of tropical region...
Article
Full-text available
As part of a study identifying relationships between environmental variables and insect distributions within a bioenergy crop, giant miscanthus (Miscanthus x giganteus) samples were collected in October 2016 at 33 locations within a field in southeast Georgia, USA. At each location, one plant sample was collected every 3 to 4 m along a 15 m transec...
Article
Since 2013, the sorghum aphid (SA), Melanaphis sorghi (Theobald), has been a serious pest that hampers all types of sorghum production in the U.S. Known sorghum aphid resistance in sorghum is limited to a few genetic regions on SBI-06. In this study, a subset of the Sorghum Association Panel (SAP) was used along with some additional lines to identi...
Preprint
Since 2013, the sugarcane aphid (SCA), Melanaphis sacchari (Zehntner), has been a serious pest that hampers all types of sorghum production in the U.S. Our understanding of sugarcane aphid resistance in sorghum is limited to knowledge about a few genetic regions on chromosome SBI-06. In this study, a subset of the Sorghum Association Panel (SAP) wa...
Article
The US Department of Agriculture-Agricultural Research Service Southeast Watershed Research Laboratory (SEWRL) initiated a hydrologic research program on the Little River Experimental Watershed (LREW) in 1967. Long-term (52 years) streamflow data are available for nine sites, including rainfall-runoff relationships and hydrograph characteristics re...
Article
Full-text available
Cloudy conditions reduce the utility of optical imagery for crop monitoring. New constellations of satellites – including the RADARSAT Constellation Mission (RCM) and Sentinel-1A/B, both available under free and open data policies – can be used to create stacks of dense seasonal C-band Synthetic Aperture Radar (SAR) data. Yet to date, the contribut...
Article
Planned satellite launches will provide open access and operational L-band radar data streams at space-time resolutions not previously available. To further prepare, the Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) platform was used to observe cropland sites across the southern United States to support the development of L-band (24...
Article
Full-text available
In order to validate its soil moisture products, the NASA Soil Moisture Active Passive (SMAP) mission utilizes sites with permanent networks of in situ soil moisture sensors maintained by independent calibration and validation partners in a variety of ecosystems around the world. Measurements from each core validation site (CVS) are combined in a w...
Article
Full-text available
Dissolved organic matter (DOM) represents an essential component of the carbon cycle and controls biogeochemical and ecological processes in aquatic systems. The composition and reactivity of DOM are determined by the spatial distribution of its sources and its residence time in a watershed. While the effects of agricultural land cover on DOM quali...
Article
Although numerous and varied users harvest, trade, and consume nontimber forest products (NTFPs), relatively little is known about the organization of the markets for these products and the market value or contribution to local and regional economies. In this article, we review and synthesize economic research and information on the markets and mar...
Article
Second generation biofuels, such as perennial grasses, have potential to provide biofuel feedstock while growing on degraded land with minimal inputs. Perennial grasses have been reported to sequester large amounts of soil organic carbon (SOC) in the Midwestern United States (USA). However, there has been little work on biofuel and carbon sequestra...
Article
Full-text available
Studies show that agricultural land requires investment in the habitat management of non-cropped areas to support healthy beneficial arthropods and the ecosystem services they provide. In a previous small plot study, we manually counted blooms over the season, and found that plots providing greater numbers of flowers supported significantly higher...
Article
Full-text available
Interest and focus on development of renewable biofuels has been increasing over the past decade leading to the introduction of a wide cadre of renewable feedstocks. As a result, numerous perennial warm-season grasses have been introduced and management practices evaluated to determine their suitability as biofuel feedstocks. “Merkeron” napier gras...
Chapter
Full-text available
Nontimber forest products (NTFPs) encompass a broad variety of edible, woodbased, decorative, and medicinal goods derived from various plant and fungus parts (Chamberlain et al. 1998). NTFPs provide signifcant economic benefts to users in the United States; however, many of these values have not been systematically researched or quantifed (Alexande...
Article
Full-text available
The economically important brown stink bug, Euschistus servus (Say) (Hemiptera: Pentatomidae), is a native pest of many crops in southeastern United States and insecticide applications are the prevailing method of population suppression. To elucidate biological control of E. servus populations, we investigated two egg predators' (red imported fire...
Article
Full-text available
Landscape factors can significantly influence arthropod populations. The economically important brown stink bug, Euschistus servus (Say) (Hemiptera: Pentatomidae), is a native mobile, polyphagous and multivoltine pest of many crops in southeastern United States and understanding the relative influence of local and landscape factors on their reprodu...
Article
Full-text available
Marginal agricultural land provides opportunities to diversify landscapes by producing biomass for biofuel, and through floral provisioning that enhances arthropod-mediated ecosystem service delivery. We examined the effects of local spatial context (adjacent to woodland or agriculture) and irrigation (irrigation or no irrigation) on wildflower blo...
Article
Full-text available
Conservation tillage (CsT) involves management that reduces soil erosion by maintaining crop residue cover on farm fields. Typically, both infiltration and soil organic matter increase over time with CsT practices. We compared the impact of a commonly used CsT practice, strip tillage (ST), to conventional tillage (CT) management on soil nitrogen (N...
Article
Full-text available
Pesticide volatilization and deposition with precipitation is widely documented and has been connected to adverse ecological impact. Here we describe a 3-yr study of current use and legacy pesticides in event-based rain samples within a 123-ha agricultural watershed. Crops in farm fields were documented quarterly with data used to estimate target c...
Article
Full-text available
With global increases in the production of cellulosic biomass for fuel, or biofuel, concerns over potential negative effects of using land for biofuel production have promoted attention to concepts of agricultural landscape design that sustainably balance tradeoffs between food, fuel, fiber, and conservation. The Energy Independence Security Act (E...
Article
Full-text available
Dedicated energy crops and crop residues will meet herbaceous feedstock demands for the new bioeconomy in the Central and Eastern USA. Perennial warm-season grasses and corn stover are well-suited to the eastern half of the USA and provide opportunities for expanding agricultural operations in the region. A suite of warm-season grasses and associat...
Conference Paper
With global increases in the production of cellulosic biomass for fuel, or “biofuel,” concerns over potential negative effects of using land for biofuel production have promoted attention to concepts of agricultural landscape design that sustainably balance tradeoffs between food, fuel, fiber, and conservation. The southeastern region of the USA ha...
Technical Report
Full-text available
This report summarizes baseline land-cover change information for four time intervals from between 1973 and 2000 for the Gulf Coastal Plains and Ozarks Landscape Conservation Cooperative (LCC). The study used sample data from the USGS Land Cover Trends dataset to develop estimates of change for 10 land-cover classes in the LCC. The results show tha...
Article
Full-text available
The continued growth of off-highway vehicle (OHV) activities – demonstrated by the dramatic increase in OHV sales, number of users, and areas experiencing OHV use – has elevated concerns about their ecological effects, the impacts on wildlife, and the sustainability of OHV use on secondary and tertiary road networks. Conflicts between visitors and...
Article
Full-text available
Livelihoods and lifestyles of people throughout the world depend on essential goods and services provided by marine and coastal ecosystems. However, as societal demand increases and available ocean and coastal space diminish, better methods are needed to spatially and temporally allocate ocean and coastal activities such as shipping, energy product...
Conference Paper
Measures of road density and distance-to-road are instructive for modeling the effects of roads on land cover change. Mostly these are post-hoc analyses summarizing cases where change has already occurred, and generally these are related to clearly detectable deforestation events. By improving our knowledge of the road network/land use change dynam...
Conference Paper
Background/Question/Methods Regional economic development and the development of transportation networks are known to be strongly correlated. For landscape ecologists, road networks are indicators of human use. There are numerous ecological effects of roads, which are exacerbated as road networks develop. Studies describing the relationships betwe...
Conference Paper
Background/Question/Methods The off highway road network makes up approximately 53% (1.6 million miles) of all roads in the United States. While providing access, this network also fragments the landscape spatially and temporally. However the vast majority of road related research has targeted paved roads; limited research done on unpaved roads foc...
Conference Paper
Background/Question/Methods Human urges to access land, land resources, and other humans drive the propagation of roads. Human access almost inevitably causes ecological disturbance. In order to understand disturbance trends, therefore, we need to understand the spatial evolution of human access; this spatial approach is more accessible and data...
Thesis
Full-text available
Roads are known to have numerous ecological effects. It is postulated that networks of roads have cumulative ecological effects that are unaccounted for in the analysis of single road effects. Common ways researchers account for road networks include the calculation of road density or distance-to-road metrics. Transportation network analysis provid...
Article
In Florida, boaters often have close encounters with Florida manatees (Trichechus manatus latirostris), a protected marine mammal. Manatee protection zones are established to regulate boating traffic in coastal areas where manatees may be at risk of injury. Public debate over the demarcation of the zones is acrimonious. The Boating and Waterways Ma...
Article
TP-160 is a 129-page illustrated report by Charles Sidman, Tim Fik, Robert Swett, Bill Sargent, James Fletcher, Susan Fann, David Fann, and Alisa Coffin. It documents the methods, procedures, and results of a map-based mail survey that was distributed to Brevard County boaters to obtain seasonal information about their boating preferences, use prof...
Book
Full-text available
The Greater Everglades Ecosystem comprises a vast swath of wetlands beginning in central Florida with the headwaters of the Kissimmee River and continuing southward through Lake Okeechobee and then to Florida Bay (Davis 1943). The ecosystem runs some 450 km, north to south, and over 100 km east to west, comprising almost 30,000 km 2 of total area....

Questions

Question (1)
Question
I am working with a time series of MODIS LST data on a Windows platform and would like some good "handbook" information on how best to work with this data. Can anyone suggest manuals, chapters, articles or listservs that address issues that arise while working with MODIS data?

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Projects

Projects (6)
Archived project
To evaluate the potential for reducing environmental impacts in agricultural production systems while increasing productivity and water and nutrient use efficiency.