Barbara A Knuth

Barbara A Knuth
Cornell University | CU · Department of Natural Resources

About

138
Publications
23,726
Reads
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4,584
Citations
Citations since 2017
15 Research Items
1258 Citations
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2017201820192020202120222023050100150200
2017201820192020202120222023050100150200

Publications

Publications (138)
Article
Many women of childbearing age, and pregnant and nursing women in particular, do not consume enough seafood to derive optimal health benefits for themselves and their children. We sought to identify how seafood consumption advice could be designed to encourage pregnant women to eat recommended amounts of seafood. In three focus groups with pregnant...
Article
Sea lampreys (Petromyzon marinus) invaded the Great Lakes in the early twentieth century and caused considerable economic and ecological harm. People who fished the Great Lakes suffered crippling losses and successfully lobbied elected officials in Canada and the United States to create a sea lamprey control program which the Great Lakes Fishery Co...
Article
Throughout his career, Dr. Henry Regier’s science and scholarship includes numerous contributions that cross disciplines and inform policy. This review of examples of his politically-relevant science publications spans six decades. Regier’s publications emphasize themes that cross the various boundaries of expert-layperson, state actors-society, pu...
Article
Women of childbearing age (WCBA) are advised by state, tribal, and federal agencies to limit their consumption of certain fish, in part, because of concerns about the ingestion of methylmercury and its impact on the development of fetuses. We studied the fish-eating habits of WCBA who had a fishing license and lived near the Great Lakes, where merc...
Article
Resource users with different interests frequent public lands, resulting in opportunity for conflict. We examined the issue of interactions among wildlife trappers and dog owners by examining stakeholders’ socio-demographics, land usage, concerns, attitudes, and satisfaction with multiuse public land management for recreation with dogs and furbeare...
Article
The spread of fish pathogens and aquatic invasive species (AIS) is an ongoing challenge in the Great Lakes region. Bait dealers can prevent the spread of fish pathogens and AIS through their business practices and by educating their customers. Little is known, however, about whether and how they fulfill these roles. Licensed bait dealers in the Gre...
Article
Women of childbearing age (WCBA) can attain health benefits of fish consumption while minimizing risks by following state and federal fish consumption guidelines, but many women avoid fish out of concerns about mercury exposure. This study tested the impact of brochures, informed by communication theory and research, to promote healthy fish consump...
Article
Past research has suggested that urban anglers are a group at high risk of being exposed to contaminants from fish consumption. Fish consumption advisories have been used in many regions to encourage healthy fish-eating behaviors, but few studies have been designed to assess whether these advisories actually influence behavior as intended. We condu...
Article
Accurate estimates of the amount and type of fish people eat are necessary to determine the health benefits and risks of consuming fish, and to assess compliance with fish consumption guidelines issued for fish affected by chemical contaminants. We developed a web-based and mobile-phone-enabled diary methodology to collect detailed fish consumption...
Article
Urban anglers are considered a group at high risk of being exposed to contaminants from fish consumption. Past studies of urban anglers' fish consumption, however, have had significant limitations making it difficult to generalize their findings broadly and to assess the degree to which urban anglers are complying with advisory recommendations. We...
Article
States in the Great Lakes region of the United States issue fish consumption guidelines for women of childbearing age (WCBA) to help them minimize the health risks to themselves and their potential offspring from eating fish contaminated with chemicals. We used diary methods to study 1395 WCBA who purchased fishing licenses in the Great Lakes coast...
Article
The U.S. Environmental Protection Agency and many state advisory programs consider urban anglers at high risk of being exposed to contaminants through fish consumption because the urban poor may be dependent on fish they catch for food and lack access to non-contaminated fishing sites. Past research has supported this characterization of urban angl...
Article
Social conflicts among wildlife stakeholders can suggest possible new directions for wildlife management, including opportunities to expand the base of stakeholders supporting active management. In response to New York State Department of Environmental Conservation information needs, we examined potential conflicts between waterfowl hunters and wat...
Article
Fish consumption advisories are issued by the federal government for women of childbearing age (WCBA). These advisories make recommendations about the amount and types of fish that should be consumed to provide the greatest health benefits to women and their children while avoiding risks from chemical contaminants. We used diary methods to study fi...
Article
Full-text available
Ecosystem-based fisheries management (EBFM) is often discussed by fisheries managers and stakeholders as a potential goal. EBFM is based on a multi-species approach, which varies significantly from the single species fisheries management (SSFM) approach currently practiced under the U.S. Magnuson-Stevens Fishery Conservation and Management Act (MSF...
Article
The spread of aquatic invasive species (AIS) is an ongoing challenge in the Great Lakes region. Anglers play a pivotal role in preventing or contributing to the spread of these organisms. Anglers in the Great Lakes region were surveyed by mail during fall 2013 to assess their AIS-related awareness, knowledge, and concern as well as the actions they...
Article
Fish consumption advisories are issued by states, tribes, and federal agencies to provide guidance to consumers about eating sport-caught fish potentially affected by chemical contaminants. Previous work has found that while anglers report being aware that advisories are available, awareness and use of specific advisory recommendations is low. This...
Article
Several studies show that most women do not consume enough fish during pregnancy (and afterward) to derive the maximum health benefits for themselves and their babies, according to the USDA guidelines. We engaged in a two-part study to better understand what might be done to encourage women of childbearing age to eat healthy fish-a mail survey of w...
Article
Full-text available
We consider the implications of public trust administration principles for collaborative fish and wildlife management. Collaboration can increase the capacity of agencies to provide fish- and wildlife-related benefits but increases the ties of agencies to some stakeholders—potentially privileging those stakeholders’ needs. We conducted two case stu...
Conference Paper
A recent report from the National Academies outlined an ecosystem services approach for assessing the impacts associated with broad ecosystem-level changes linked to human activity. Using a similar ecosystem services framework to situate research, management, and outreach regarding inland fisheries can broaden the ways scientists, managers, policy...
Conference Paper
In the New England and Mid-Atlantic regional fishery management councils, the practice of Ecosystem-Based Fisheries Management (EBFM) is an evolving component of fisheries management, resulting in discussion about how EBFM influences and is perceived by stakeholders. The research objective for this study was: To explore the factors, including socia...
Conference Paper
Ecosystem-based fisheries management considers the interactions between the physical, biological, and human components of ecosystems. We focused on how communication between fisheries stakeholders in the New England and Mid-Atlantic regions influences the potential for regional fishery management council adoption of ecosystem-based fisheries manage...
Article
Classifications of recreational anglers have focused on factors that may not be easily influenced by fishery managers, such as fishing specialization, desired experiences, and fishing conditions. To provide managers with a more managerially relevant classification of angler groups, we used the 2007 New York statewide angler survey and hierarchical...
Book
Full-text available
As the Gulf of Mexico recovers from the Deepwater Horizon oil spill, natural resource managers face the challenge of understanding the impacts of the spill and setting priorities for restoration work. The full value of losses resulting from the spill cannot be captured, however, without consideration of changes in ecosystem services--the benefits d...
Conference Paper
All eight states surrounding the Great Lakes produce fish consumption advisories for sport-caught fish. These advisories suggest that people should limit their consumption of certain fish due to contaminants such as mercury and PCBs. Past research has shown that anglers are generally aware of the advisories, and some report reducing consumption and...
Article
Resolution of urban and suburban deer problems often depends on learning and co-management. Local newspapers may reflect the learning occurring in a community. Past authors have identified 4 primary types of learning (technical, conceptual, social, and political). We studied newspaper content related to deer management for insights about the types...
Chapter
This chapter focuses on Internet-based social networking and collective action models of citizen science. More specifically, it explores the potential of collective action and social networking theory to improve project designs and thus extend impacts beyond the traditional program goals. The chapter first explains how citizen science functions as...
Article
Full-text available
he returned full-time to the department faculty. Mark's boundless curiosity and wide-ranging professional interests defined his career. His work integrated fisheries science, aquatic ecology, hydrology, and systems theory. Among his diverse pursuits, Mark developed approaches for habitat evaluation and cumulative impact assessment, conducted studie...
Article
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We examined the evolution of four public wildlife management issues using theories from collective action, social networks, and social constructionism to understand key roles and perspectives among stakeholders engaged in collective actions related to wildlife management policies. We conducted semi-structured telephone interviews with 50 key stakeh...
Article
Authors have documented a "research-implementation gap" in conservation. Research intended to inform conservation practice often does not, and practice often is not informed by the best science. We used the literature on policy learning (i.e., literature attributing policy change to learning) to structure a study of how practice is informed by scie...
Conference Paper
Previous studies demonstrate that news media influence agenda-setting on policy issues for the general public, and that content analysis of newsprint is a useful approach to determining public perspectives on policy issues. However, little attention had been paid to public perception of ecosystem-based management until Bengston’s (2001) news media...
Conference Paper
Fisheries professionals are called upon to provide leadership in many ways, in the context of the work environment interacting with colleagues, in decision-making processes while advocating for fisheries resources and/or fisheries stakeholders, and in service to others in our lives inside and outside of the workplace. Leadership may take many forms...
Article
Full-text available
Our research explored patterns in the development of social networks serving as the foundation for collaborative conservation. We conducted four case studies of conservation efforts associated with State Wildlife Action Plans in the United States. Data were collected on conservation objectives, key players, and their roles and interactions. Network...
Article
Effectiveness of government natural resource agencies depends on the capabilities of their employees. These capabilities may be maintained or enhanced through professional development activities, including involvement in scientific societies. The authors studied factors that influence whether U.S. Fish and Wildlife Service and U.S. Geological Surve...
Conference Paper
Understanding trends in fishing participation and angler interests can help inform the direction of future management programs. The Vermont Department of Fish and Wildlife has conducted three statewide angler surveys over the past 20 years to learn more about the fishing experiences and types of fishing opportunities desired by anglers fishing in V...
Article
Full-text available
Effective methods to identify areas and people prone to human–wildlife conflicts help wildlife and land managers develop strategies that minimize unwanted human–wildlife interactions. We combined landscape variables (i.e., housing density, habitat quality) with data on local land use practices and sociodemographics from a mail survey of 730 landown...
Article
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ABSTRACT  Managers and other stakeholders may rely on wildlife-related risk communication campaigns to prevent or reduce risks associated with human-wildlife conflict. The operating environment or the sphere of activity within which a campaign functions can influence a campaign's ability to achieve outcomes. Between 1 May 2005 and 30 October 2005,...
Article
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We explored factors influencing people's perceptions of human–wildlife interactions in residential areas, reporting interactions to authorities, and potential conservation implications. Data were obtained from a mail survey of 1,439 landowners. We used logistic regression to predict probabilities of having non-positive perceptions and reporting int...
Article
Purpose – The purpose is to show that the influx of new seasonal and year-round residents to the small towns located in and around protected areas has numerous implications for governance associated with land management and regional planning including reconciling the competing values of wilderness (amenity vs. livelihood, motorized vs. non-motorize...
Article
Full-text available
The northeastern United States is influenced by the atmospheric deposition of mercury. Subsequent integration of methylmercury into aquatic food webs results in contamination levels in fish that are high enough to present health concerns for humans who consume fish. Resource and sampling limitations have hindered a comprehensive understanding of me...
Article
Education programs designed to reduce conflicts between American black bears (Ursus americanus) and humans are often implemented by diverse groups of wildlife practitioners who may devote significant resources to these programs, yet little has been done to characterize the content, structure, and effectiveness of these programs. We review 6 educati...
Article
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New York State's Adirondack Park is home to an estimated 6,000 black bears (Ursus americanus), about 75% of the state's total population. Human–bear interactions at the Park's nearly 100 campgrounds are commonplace. Some interactions are conflicts that include risks to personal safety and property damage. Between 19 June 2003 and 18 August 2003, we...
Article
Membership in scientific societies is an avenue biologists may use to enhance their professional capabilities. We studied factors influencing federal biologists' membership in scientific societies, including the American Fisheries Society. We conducted an Internet survey of 3,755 U.S. Fish and Wildlife Service and 932 U.S. Geological Survey profess...
Article
We conducted case studies of three successful examples of collaborative, community-based natural resource conservation and development. Our purpose was to: (1) identify the functions served by interactions within the social networks of involved stakeholders; (2) describe key structural properties of these social networks; and (3) determine how thes...
Article
Full-text available
Outreach programs are interventions that have the potential to influence the unique context of human–wildlife conflict as well as the political, economic, and social systems within which human–wildlife conflict occurs. However, evaluation of these programs is limited. The purpose of this research was to determine a human–wildlife conflict outreach...
Article
Compromises in biodiversity and biotic integrity from human development alter native wildlife communities. Anecdotal evidence suggests that increases in residential development contribute to increases in human–wildlife interactions; however, little empirical research has addressed this issue. We tested whether housing density could be used to indic...
Article
Full-text available
Invasions of nonnative species such as zebra mussels can have both ecological and economic consequences. The economic impacts of zebra mussels have not been examined in detail since the mid-1990s. The purpose of this study was to quantify the annual and cumulative economic impact of zebra mussels on surface water-dependent drinking water treatment...
Article
Certain species of wildlife cause considerable damage and therefore receive management attention. Traditional management methods rely on lethal control, but fertility control is increasingly being advocated as a more humane alternative. Because wildlife management decisions are influenced by citizen input, it is important to understand what makes p...
Article
Full-text available
Negative human–black bear interactions in New York's Adirondack Park campgrounds pose risk management challenges. Communication is one tool available to modify human behavior and reduce associated risks, but knowledge of constructs influencing risk perception among key stakeholder groups is needed to design effective risk communication approaches....
Article
The levels of dioxins/furans, polychlorinated biphenyls (PCBs), and chlorinated pesticides were determined in farmed salmon for eight regions in Europe, North America, and South America, in salmon fillets purchased in 16 cities in Europe and North America, and in five species of wild Pacific salmon. Upon application of US Environmental Protection A...
Article
A fish consumption health advisory has existed for New York Lake Ontario sport-caught fish since 1978. Our study objectives were to evaluate the effectiveness of the advisory for reaching potential target audiences and to identify appropriate advisory content, style, and dissemination methods using a risk communication planning model as an evaluati...
Article
Dry sanitation (DS) may be part of the solution to water scarcity, water quality deterioration and lack of resources to provide or maintain waterborne sewage systems. However, the worldwide paucity of large-scale, urban case studies makes assessment of DS as a potential urban water management strategy difficult. Urban DS viability depends in part o...
Article
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Centralized waterborne sanitation faces serious social, economic and environmental sustainability challenges. Dry sanitation (DS) may ease some of those, but it is not known whether DS can be a viable solution at large scales and in urban settings. We assessed DS viability in a broad range of large scale and urban contexts in Mexico. Here, we synth...
Article
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Contaminants in farmed Atlantic and wild Pacific salmon raise important questions about the competing health benefits and risks of fish consumption. A benefit-risk analysis was conducted to compare quantitatively the cancer and noncancer risks of exposure to organic contaminants in salmon with the (n-3) fatty acid-associated health benefits of salm...
Article
Full-text available
Levels of omega-3 (n-3) and omega-6 (n-6) fatty acids and lipid-adjusted concentrations of polychlorinated biphenyls (PCBs), dioxins, toxaphene, and dieldrin were determined in 459 farmed Atlantic salmon, 135 wild Pacific salmon, and 144 supermarket farmed Atlantic salmon fillets purchased in 16 cities in North America and Europe. These were the sa...
Article
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We reported recently that several organic contaminants occurred at elevated concentrations in farmed Atlantic salmon compared with concentrations of the same contaminants in wild Pacific salmon [Hites et al. Science 303: 226-229 (2004)]. We also found that polychlorinated biphenyls (PCBs), toxaphene, dieldrin, dioxins, and polybrominated diphenyl e...
Article
The American Fisheries Society's 2005-2009 Strategic Plan is a revision of the 1999-2004 Strategic Plan and has features that are similar to the earlier Plan. It is organized around three focus areas that are identical to the "major goals" detailed in the 1999-2004 Strategic Plan. Each focus area contains a series of goals ("subgoals" in the previo...
Article
We have shown recently that levels of persistent, bioaccumulative contaminants (polychlorinated biphenyls, dioxins, and several chlorinated pesticides) are significantly higher in farmed than in wild salmon and that European farm-raised salmon have significantly greater toxic contaminant loads than those raised in North and South America. In this p...
Article
The Theory of Reasoned Action can be used to predict the types of information that will influence attitudes toward and support for novel suburban deer (Odocoileus spp.) management techniques such as contraception. Information that is relevant to individuals' "behavioral beliefs" about the important outcomes of contraception is most likely to be inf...
Article
Community-based management (CBM) has progressed from the conceptual fringe to the dialogical heart of environmental management. Despite its rhetorical popularity, limited quantitative data exist on factors influencing local involvement. A quantitative survey of three Venezuelan fishing villages resulted in a predictive model of willingness to parti...
Article
We compared the motivations and preferences of men and women toward citizen participation in wildlife-related decisions. Data were collected via a mail survey of past participants in New York State Department of Environmental Conservation citizen participation processes completed between 1992 and 1999. We explored gender differences in motivations...
Article
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The annual global production of farmed salmon has increased by a factor of 40 during the past two decades. Salmon from farms in northern Europe, North America, and Chile are now available widely year-round at relatively low prices. Salmon farms have been criticized for their ecological effects, but the potential human health risks of farmed salmon...
Article
We define aquatic stewardship as "the moral obligation to care for aquatic environments, and the actions undertaken to provide that care." We suggest that fostering a citizenry committed to aquatic stewardship will require education and communication programs that focus on awareness and knowledge of aquatic systems and their importance to overall e...
Article
Fish consumers may incur benefits and risks from eating fish. Health advisories issued by states, tribes, and other entities typically include advice about how to limit fish consumption or change other behaviors (e.g., fish cleaning or cooking) to reduce health risks from exposure to contaminants. Eating fish, however, may provide health benefits....
Article
We compared the views of community leaders in the Hudson River Valley, New York State, to identify different perspectives on ecosystem restoration of the Hudson River estuary. We found three distinct types of community leaders. All thought ecosystem restoration was important, but they varied on which specific actions were more important to implemen...
Article
Full-text available
In addition to political partnerships. less-explored components of community-based management (CBM) are knowledge partnerships that blend expert opinion and local ecological wisdom into a comprehensive wellspring for environmental decision making. The exclusion through omission of local input in knowledge construction is a consequence of widespread...
Article
The authors explored how citizens reasoned to decide which management options were most appropriate for addressing concerns about an overpopulation of Canada geese in Rockland County, New York. Data were collected through a set of in-depth, semistructured interviews. The reasons respondents offered in support of management alternatives, and the ass...