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Featured researches published by Robert J. Lilieholm.


Society & Natural Resources | 2010

Community Attitudes Toward Wildlife and Protected Areas in Ethiopia

Mekbeb E. Tessema; Robert J. Lilieholm; Zelealem Tefera Ashenafi; Nigel Leader-Williams

Across Africa, national policies that established protected areas (PAs) typically limited local use of wildlife and other resources. Over time, these policies have raised tensions with rural communities and today threaten to undermine conservation goals. This article examines community–PA relationships at four important sites in Ethiopia—a country of rich tradition with an unusual colonial past. Using focus groups and household surveys, we found that despite local tensions, most respondents held positive views toward wildlife and nearby PAs. Factors influencing positive views included receiving PA benefits, good relations with PA staff, higher education levels, being older, having a large family, diversified income sources, owning fewer livestock, and fewer incidents of wildlife conflicts. In contrast, the devolved control of PAs from federal to regional levels has not influenced community–PA relations as intended. Our results suggest that relations could be improved through involving communities in co-management arrangements, honoring resource tenure and use rights, providing benefits, and implementing conservation education programs.


Environmental Management | 1993

Stand density index applied to timber and goshawk habitat objectives in Douglas-fir

Robert J. Lilieholm; Winifred B. Kessler; Karren Merrill

Silvicultural guidelines are presented for the management of intermountain Douglas-fir (Pseudotsuga menziesii) stands for sawtimber production and goshawk (Accipiter gentilis) nesting habitat in the northern Rocky Mountains. Data from 14 goshawk nest stands in Douglas-fir forests on the Targhee National Forest in Idaho (Patla 1991) were used to characterize the range of stand conditions considered suitable for goshawk nesting. A density management regime is presented using Reinekes stand density index that includes a technical rotation designed to produce sawlogs with a single commercial thinning. On average timber-growing sites, stands reach goshawk habitat suitability when site height is 25 m at age 75 and provide 65 years of goshawk nesting habitat until the final harvest at age 140. Approximately 1320 m3/ha are harvested over the rotation. On higher-quality sites, rotation length declines from 140 to 85 years, of which roughly 35 years are suitable for goshawk nesting.


Agroforestry Systems | 1993

Reducing financial risk in agroforestry planning: a case study in Costa Rica*

L. H. Reeves; Robert J. Lilieholm

We used fluctuations in net income from alternative cropping systems to assess the financial risk associated with an agroforestry system. Mean-variance analysis was used to derive a set of minimum-risk farm plans for a 15-hectare farm in Costa Rica. Monocultural coffee production provided the highest expected net income, but also had the greatest economic risk. As risk was reduced, the optimal agroforestry system diversified to include other cropping systems in addition to the coffee monoculture. Risk aversion was, however, accompanied by significant reductions in expected net income for the cropping systems studied. The inclusion of additional cropping systems whose net incomes are negatively correlated with the systems considered here could help reduce the economic risk facing rural agriculturalists in this region.


Society & Natural Resources | 2013

Using Mixed Methods to Develop a Frame-Based Private Landowner Typology

Jessica S. Jansujwicz; Aram J. K. Calhoun; Jessica E. Leahy; Robert J. Lilieholm

An important goal of community-based management is to engage a wider network of stakeholders in conservation and management decisions. Using mixed methods, we constructed a frame-based private landowner typology to identify landowner response patterns to vernal pool conservation and management in Maine. Drawing on data from interviews and focus groups, we identified two opposing frames that described landowner views on vernal pools (personal gain and personal loss). A mail survey identified three groups of private landowners (Supportive, Uncertain, and Opposing) with similar sociodemographic and property variables but different aesthetic preferences, economic concerns, and views on property rights and conservation. Our results suggest that frame-based typologies are useful for enhancing communications with different landowner groups and in identifying trusted information sources and communication preferences. Our approach represents a critical first step toward understanding and integrating a range of landowner perspectives into conservation practice and enhancing private landowner cooperation in proactive planning.


Environmental Management | 1992

Pinelands national reserve: An intergovernmental approach to nature preservation

Robert J. Lilieholm; Jeff Romm

The Pinelands National Reserve was created in 1978 when private interests and federal, state, and local governments allied to protect 378,000 ha (935,000 acres) of New Jerseys Pine Barrens from encroaching development. An intergovernmental authority, the Pinelands Commission, manages the reserve by implementing a regional plan to guide development away from environmentally sensitive areas and into designated growth centers. Through transferable development rights, financial gains from development in growth centers are used to compensate owners and localities in the reserve who might otherwise have developed their lands.The national reserve strategy contrasts with other federal strategies for preserving unique environments in which the federal government exercises exclusive control (e.g., national parks, monuments, and recreation areas). This article describes the strategy applied in the Pinelands and discusses the conditions in which it may be more or less effective than other strategies used to protect unique or valued landscapes. It then compares the Pinelands model with the strategies and conditions of californias Redwood National Park and Point Reyes National Seashore to develop propositions about the circumstances in which one or another strategy is more likely to be viable. Finally, it applies these propositions to the possibilities for future forest preservation in New England.


Agroforestry Systems | 1991

Incorporating economic risk aversion in agroforestry planning

Robert J. Lilieholm; Laurence H. Reeves

The ability to use a knowledge of past market price fluctuations to reduce the risk of future financial returns is explored in the context of planning an agroforestry system with a cash crop component. It is demonstrated that if past crop price behavior is indicative of future price behavior, planting crops with stable and/or negatively correlated net revenues can reduce the variance of future net revenues and hence decrease the financial risks of agroforestry systems.


Environmental Management | 2010

An Assessment of Land Conservation Patterns in Maine Based on Spatial Analysis of Ecological and Socioeconomic Indicators

Christopher S. Cronan; Robert J. Lilieholm; Jill Tremblay; Timothy Glidden

Given the nature of modern conservation acquisitions, which often result from gifts and opportunistic purchases of full or partial property rights, there is a risk that the resulting mosaic of conserved resources may not represent a coherent set of public values and benefits. With different public and private entities engaged in land conservation, one would further expect that each organization would apply separate goals and criteria to the selection and acquisition of its conservation portfolio. This set of circumstances raises an important question: what is the aggregate outcome of this land conservation process? Retrospective assessments provide a means of reviewing cumulative historical decisions and elucidating lessons for improving future conservation strategies. This study used GIS-based spatial analysis to examine the relationships of private and public conservation lands in Maine to a variety of landscape metrics in order to determine the degree to which these lands represent core ecological and socioeconomic values that are meaningful to a wide cross-section of citizens. Results revealed that the gains of past conservation efforts in Maine are counter-balanced to some extent by apparent gaps in the existing fabric of conservation holdings. Conservation lands capture a representative sample of diverse habitat, provide a large measure of protection for multiple conservation values and indicators, and offer an unusual mix of outdoor recreational opportunities for residents and visitors alike. Yet, the majority of parcels are relatively small and isolated, and thus do not provide contiguous habitat blocks that offset ongoing processes of landscape fragmentation. Furthermore, the majority of area associated with many of the ecological metrics examined in this report is located outside the boundaries of current conservation holdings. The under-represented metrics identified in this investigation can be viewed as potential targets for new strategic conservation initiatives.


WIT Transactions on Ecology and the Environment | 2009

Resource use, dependence and vulnerability: community-resource linkages on Alaska's Tongass National Forest

E. T. Mekbeb; Robert J. Lilieholm; D. J. Blahna; L. E. Kruger

Understanding how rural communities use and depend upon local natural resources is a critical factor in developing policies to sustain the long-term viability of human and natural systems. Such “community-resource” linkages are particularly important in Alaska, where rural communities – many of them comprised of indigenous Alaskan Natives – are highly dependent upon local resources found on public lands. Alaskan communities utilize forests in many ways. To better understand these coupled “social-ecological” systems, we combined socio-economic data from the 2000 U.S. Census with timber permit data from the USDA Forest Service to describe communities and their use of forest resources. Our results suggest that private access to public resources is an important feature of Alaskan communities, and that continued access is likely to be a key factor in sustaining human systems on the landscape. As a result, public land managers should give special consideration to local resource use when making policy decisions.


Environmental Management | 2012

Impact of Demographic Trends on Future Development Patterns and the Loss of Open Space in the California Mojave Desert

Peter Gomben; Robert J. Lilieholm; Manuel Gonzalez-Guillen

During the post-World War II era, the Mojave Desert Region of San Bernardino County, California, has experienced rapid levels of population growth. Over the past several decades, growth has accelerated, accompanied by significant shifts in ethnic composition, most notably from predominantly White non-Hispanic to Hispanic. This study explores the impacts of changing ethnicity on future development and the loss of open space by modeling ethnic propensities regarding family size and settlement preferences reflected by U.S. Census Bureau data. Demographic trends and land conversion data were obtained for seven Mojave Desert communities for the period between 1990 and 2001. Using a spatially explicit, logistic regression-based urban growth model, these data and trends were used to project community-specific future growth patterns from 2000 to 2020 under three future settlement scenarios: (1) an “historic” scenario reported in earlier research that uses a Mojave-wide average settlement density of 3.76 persons/ha; (2) an “existing” scenario based on community-specific settlement densities as of 2001; and (3) a “demographic futures” scenario based on community-specific settlement densities that explicitly model the Region’s changing ethnicity. Results found that under the demographic futures scenario, by 2020 roughly 53% of within-community open space would remain, under the existing scenario only 40% would remain, and under the historic scenario model the communities would have what amounts to a deficit of open space. Differences in the loss of open space across the scenarios demonstrate the importance of considering demographic trends that are reflective of the residential needs and preferences of projected future populations.


Journal of Sustainable Forestry | 2015

Evaluating the Impacts of Forest Management Policies and Community-Level Institutions in the Buffer Zone of Chitwan National Park, Nepal

Jared R. Stapp; Robert J. Lilieholm; Suraj Upadhaya; Tora Johnson

A Master Plan for Nepal’s Forestry Sector (MPFS), enacted in 1989, and subsequent legislation laid the foundation for modern community-based forest management in Nepal. In 2014, the MPFS reached the end of its 25-yr lifespan, after successfully ushering in significant institutional changes that fundamentally transformed the management of Nepal’s forests, mostly through devolving management and benefits from the national level to local communities. Here, we use the 25-yr anniversary of the MPFS to explore forest cover trends in the buffer zone surrounding Chitwan National Park (CNP). Landsat imagery was used for the years 1989, 2005, and 2013 to compute a normalized difference vegetation index (NDVI) to analyze trends in forest cover for 36 buffer zone village development committees (VDCs). The analysis, covering approximately 1,267 km2, found that since the MPFS was enacted, there was first a continued decrease in forest cover, followed by a significant recovery. These data offer insight into the success of modern community-based forest management policies and supporting institutions, and provide a model for other efforts to conserve forest resources in Nepal and elsewhere.

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Terry L. Sharik

Michigan Technological University

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Aaron R. Kelson

Economic Research Service

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