Conservation Easements Research Articles

Climate mitigation potential of natural climate solutions and clean energy on The Nature Conservancy properties in California, USA.

Natural climate solutions (NCS) and transitioning to clean energy can reduce greenhouse gases and contribute to mitigating climate change. Private landowners with large holdings, such as conservation organizations like The Nature Conservancy, have set ambitious goals to reduce net emissions and increase sequestration on their lands by implementing NCS. We assessed the potential carbon dioxide-equivalent (CO2e) reduction from feasible NCS, specifically implementing new restoration and agricultural management activities, and transitions to clean energy on The Nature Conservancy, California chapter's fee-owned and conservation easement properties. We compared the total CO2e reduction from potential new NCS activities to the impact from ongoing NCS activities, the chapter's 2030 goal, and the state's reduction goal for natural and working lands to understand how the organization can contribute to climate mitigation. We found that implementing NCS on 37 fee-owned properties (63,175 MTCO2e year -1) and clean energy on 10 fee-owned properties (488 MTCO2e year -1) combined would not reach the chapter's 2030 goal (72,000 MTCO2e year -1), and there can be tradeoffs between maximizing CO2e reduction and protecting conservation values. However, ongoing changes to forest management on a single conservation easement property, where another non-profit harvests timber and sells carbon credits, currently contributes 147,749 MTCO2e year -1, more than two times the 2030 goal and representing 7.4% of the state's annual goal. Our results suggest that The Nature Conservancy, California chapter would need to implement NCS on some of the conservation easements or consider future land protection deals with carbon rich ecosystems or high impact NCS to reach their CO2e reduction goal.

How to Conserve the Biodiversity on Collective Land in National Park: Conservation Easements in China

Conservation easements (CEs) are used as a conservation mechanism to conserve the biodiversity and ecosystem on private land, and are receiving increasing attention around the world. Most of the literature mainly focused on the contribution of CE to private land conservation in the U.S. and other countries, while its role in collective land conservation remains underreported. China planned to build the world’s largest national parks (NPs) and faced the conflict between nature conservation and social development. As a private and voluntary conservation tool, CEs have the potential to fill the conservation gap, reduce conservation costs, promote adaptive management, and incentivize sustainable national park construction. We reviewed the recent CE practices in Qianjiangyuan, Wuyishan and Nanshan National Parks. The local government and NP administration drove its practices in China’s NPs, whereas non-profit organizations have few opportunities to participate. Furthermore, due to the current legislation’s lack of explicit specifications regarding CEs, the provisions outlined in the CE agreement were insufficiently constructed and did not align with the unique circumstances of the park. Thus, the implementation of the National Park Act serves as a fitting means to introduce the CE in China.

The Kerch Peninsula in Transition: A Comprehensive Analysis and Prediction of Land Use and Land Cover Changes over Thirty Years

This study presents an in-depth analysis of land use and land cover change on the Kerch Peninsula over a period spanning three decades. Convolutional neural networks were employed in conjunction with satellite imagery analysis to map and quantify the changes in land use and cover. This revealed significant trends and transformations within the peninsula’s landscape. The analysis revealed a notable increase in urban expansion, particularly at the expense of natural ecosystems. Furthermore, there was a notable reversion of agricultural lands to grasslands, driven by economic downturns and reduced agricultural activity. These land cover changes underscore the urgency of implementing sustainable land management policies. The study recommends the establishment of conservation easements to protect remaining natural ecosystems, the initiation of reforestation programs to restore degraded lands, and the development of comprehensive water management strategies to address the peninsula’s hydrological challenges. Furthermore, the study underscores the pivotal importance of integrating change analysis and predictive modeling to anticipate future land cover scenarios and inform effective land management strategies. The model developed through this research, which employs advanced remote sensing and GIS technologies, provides a robust framework for understanding and managing land use and land cover change. This model can serve as a reference for similar regions globally, offering insights that can inform sustainable land use practices and policy decisions. The findings of this study have implications that extend beyond the Kerch Peninsula. They provide insights that can inform the management of land use changes and the conservation of natural landscapes in regions facing comparable socio-economic and environmental challenges.

Collaborative Management on the Eastern Slopes: The Waldron Ranch Grazing Cooperative and Conservation Easement Motivations

Biodiversity conservation is at an inflection point. With the crises of biodiversity loss and climate change, novel strategies are needed to conserve ecosystems under a variety of property regimes. In southwestern Alberta, the Waldron Ranch Grazing Cooperative and the Nature Conservancy of Canada (NCC) have collaborated to use conservation easements (CEs) to place over 30,000 acres (12,140 hectares) of endangered grassland under perpetual protection. Waldron Ranch provides a unique case study, not only due to the size of the total CE, but also the cooperative structure that requires 72 Albertan ranchers to agree on restricting their productivity for conservation protections. We interviewed four individuals from the Cooperative and NCC to understand the motivations, values, and impacts that influenced the CE placement. Key themes include historic sustainable management and minimal impacts to livelihoods, with economic benefits being crucial for CE enrollment, which contrasts with findings from existing literature. Considering these, we expand on the critical role of landowner values and fears when using CEs as a tool for private land conservation. We argue that environmental nongovernmental organizations (eNGOs) need to deeply understand the social complexities that exist on private landscapes if voluntary collaborations are pursued for conservation benefits.

Unpacking conservation easements' assessed land use designations and their implications for realizing biodiversity protection

AbstractNative ecosystem and biodiversity loss from land use conversion into human‐modified landscapes are evident in the United States and globally. In addition to public land conservation, there is an increase in private land conservation through conservation easements (CEs) across exurban landscapes. Not every CE was established strictly for biodiversity protection and permitted land uses can increase human modification. No research of which we are aware has examined the actual tax assessor's land use designations (LUDs) through time. We constructed granular CE datasets (GCED) of CEs and their parcels' tax assessment LUDs for 1997–2008/2009, based on original data from 12 counties in six US states. Using the GCED, we examined patterns in the LUDs, with implications for land uses that could impact CE biological outcomes. We show that LUDs on exurban private conservation lands were predominately residential and agricultural, with increased residential over time. Critically, the LUDs lack a biological conservation exempt designation/category. There is no consistent trend in association between the primary CE reason and its parcel's LUD, suggesting that they coincide in some circumstances but in others, the CE may be a response to contravene the LUD. The majority of the first CE reasons are focused on open space preservation, except in some counties where agricultural land uses and agricultural CEs are associated. The economically and human‐focused LUD is one of many social factors that should be considered in a classification system for private land conservation and CEs more specifically. These results prompt the land conservation, conservation biology, and environmental planning communities to explore assessed land uses' impact on biodiversity conservation objectives.

A hypothesis test for detecting spatial patterns in categorical areal data

The vast growth of spatial datasets in recent decades has fueled the development of many statistical methods for detecting spatial patterns. Two of the most commonly studied spatial patterns are clustering, loosely defined as datapoints with similar attributes existing close together, and dispersion, loosely defined as the semi-regular placement of datapoints with similar attributes. In this work, we develop a hypothesis test to detect spatial clustering or dispersion at specific distances in categorical areal data. Such data consists of a set of spatial regions whose boundaries are fixed and known (e.g., counties) associated with a categorical random variable (e.g. whether the county is rural, micropolitan, or metropolitan). We propose a method to extend the positive area proportion function (developed for detecting spatial clustering in binary areal data) to the categorical case. This proposal, referred to as the categorical positive areal proportion function test, can detect various spatial patterns, including homogeneous clusters, heterogeneous clusters, and dispersion. Our approach is the first method capable of distinguishing between different types of clustering in categorical areal data. After validating our method using an extensive simulation study, we use the categorical positive area proportion function test to detect spatial patterns in Boulder County, Colorado USA biological, agricultural, built and open conservation easements.

Collective participation in conservation easements in rural China: Evidence from the Qianjiangyuan National Park

Conservation easements (CE), as an emerging conservation strategy in China, have gained successful collective participation within the Qianjiangyuan National Park with all its collectively-owned forestlands under easements. This study uses an analytical framework developed from the social-ecological systems (SES) framework to explore systemic inter-dependencies among social, economic, political, and natural processes that contextualize the agreements and patterns of interaction where collective participation is achieved. The results indicate that broader-scale variables under socio-ecological contexts, by affecting the resource system, government system, actor system variables, and their interactions, play a more important role in CE participation than sole individual variables. At the regional scale, changing socio-political factors have influenced rural communities' resource utilization and reduced economic dependency on logging activities, facilitating CE adoption. Within the focal action situation, collective participation was achieved under the rural governance system in which actors interact to form community-level consensus through rural self-governance and consultation, influenced by the mobilizing power of the authority. The case study in China demonstrates the feasibility of using CE as a forest co-management strategy in densely populated protected areas under a common-property regime and the necessity of considering both regional-scale factors and local dynamics in CE design and implementation.

Understanding variation in impacts from private protected areas across regions and protection mechanisms to inform organizational practices.

Private land protection is an important and growing tool to address biodiversity loss and climate change. Thus, better empirical evidence on the effectiveness of private land protection and organizational practices, such as targeting of lands for protection and choice of protection mechanism (i.e., fee simple land acquisition and conservation easements), is needed. We addressed this gap by estimating the impacts of The Nature Conservancy's (TNC) (a large nongovernmental organization with relatively decentralized management) conservation land acquisitions and easements from 1988 to 2016 in three regions of the United States (Mid-Atlantic, New England and New York, and California). We estimated impact in terms of avoided conversion by comparing natural land cover on 3179 protected parcels with matched unprotected parcels. Nineteen of 21 ecoregional plans used threats of agriculture and development to identify priorities for protection. When regions and protection mechanisms were pooled, on average there was no evidence of avoided conversion from 1988 to 2016. Accounting for mechanisms, TNC land acquisitions avoided conversionand easements did not. TNC's easements on parcels acquired by conservation partners did avoid conversion. Limitations of these results include focus on a singlemeasure of impact, inability to capture future avoided conversion, and low land cover change accuracy in California. Our results suggest that private land protection managers who seek to avoid land conversion in the near to medium term should increase focus on areas with higher threats. Special attention should be paid to strengthening accountability and the role of partners, improving or clarifying how easements are used, and facilitating the flow of resources to work with the greatest potential impact.

Supplement to conservation easements, not replacement, is the appropriate role of habitat leasing

Supplement to conservation easements, not replacement, is the appropriate role of habitat leasing

The contribution of private land conservation to 30x30 in Germany

In line with Target 3 of the Kunming-Montreal Global Biodiversity Framework, the European Union (EU) aims to protect 30% of its land and sea by 2030 (known as 30x30). Germany has been a vocal supporter of this goal in the international arena but has yet to achieve sufficient protected area coverage domestically. We estimate that Germany needs to report an additional 4.65 million hectares of protected land to achieve 30x30. This article examines the potential of privately protected areas (PPAs) and other effective area-based conservation measures (OECMs) to contribute to this goal. We explore the German Federal Nature Conservation Act and identify the legal hurdles for the designation and recognition of PPAs. Furthermore, we argue that OECMs have the potential to contribute significantly to 30x30 in Germany. We estimate that close to one million hectares of land could be classified as OECMs and outline potentially qualifying sites. In conclusion, we discuss the prerequisites for upscaling private land conservation in Germany, focusing on required conditions for establishing OECMs and incentivising conservation easements and long-term conservation leases through national funding programmes.

Keeping the Perpetual in Florida's Conservation Easements

Hundreds of millions of dollars are being invested in the protection of the Florida Wildlife Corridor and other environmentally sensitive lands. One of the primary tools being used to accomplish this protection is the perpetual conservation easement, which is touted to landowners and the public as providing a permanent guarantee that the subject lands will never be developed. There is a very real danger, however, that perpetual conservation easements in Florida may not, in fact, be perpetual, and the protections put in place today will vanish over time—along with the public funds invested therein—as government and nonprofit holders “release” the easements in the face of economic, political, and development pressures. Florida landowners may also find themselves unable to benefit from the subsidies offered through federal tax incentive and purchase programs due to an inability to qualify for those programs, which mandate that strict limits be placed on the release or extinguishment of conservation easements. This Article raises the alarm regarding the potential lack of durability of conservation easements in Florida, and explains the significant disconnect between what landowners and the public are being told about the permanence of conservation easements and the realities of existing law. This article also seeks to address these problems by recommending two steps that should be taken now to ensure that perpetual conservation easements in Florida will, in fact, be perpetual: (i) revise Florida law to place clear limits on the extinguishment or amendment of perpetual conservation easements, as has been done in several other states, and (ii) draft conservation easements to make clear that the grantor, the grantee, and their successors in interest are bound by the easement terms. With hundreds of landowners reportedly waiting to grant perpetual conservation easements to protect the Florida Wildlife Corridor, the time to act is now.

Landowners' Perceptions of Conservation Easements: Implications for Effective Persuasive Communication

Landowners' Perceptions of Conservation Easements: Implications for Effective Persuasive Communication

Conservation easements – project selection criteria for quarries in Europe

Conservation easements – project selection criteria for quarries in Europe

Perceptions of Missouri Landowners With Land Trust Conservation Easements: Motivations, Challenges and Suggestions

Conservation easements are a legal tool to preserve and manage private lands. Understanding the factors that influence private landowners to place their land under a conservation easement provides important information for policy-makers and land conservation professionals. Our study sought to identify the perceptions of first-generation conservation easement Missouri landowners. We conducted 16 semi-structured interviews in summer and fall of 2020. Our inductive thematic analysis revealed four major themes including landowner motivations and benefits, disincentives, process challenges, and participant suggestions. We found that landowners place their property under conservation easement because of the enjoyment and recreation opportunities that it provides, and they feel the land use restrictions associated with conservation easements are both a motivation and a disincentive. Our results can be used to inform conservation easement processes and policies, as well as improve efforts by land trusts to make the tool more accessible to landowners.

Spatial Analysis of the Attributes of Working Forest Conservation Easements in the State of Georgia

Working forest conservation easements (WFCEs) are increasingly used to protect working forests. However, their attributes such as forest management activities, landowner goals, landscape features, and land uses vary significantly. Understanding the trends and patterns in these attributes is essential to comprehend the conservation, ecological, and economic implications of WFCEs. This study analyzed the spatial relationships of easement attributes by examining WFCEs managed by three easement-holding organizations in Georgia, by text-mining the attributes from the contracts and the baseline reports. Results revealed a strong spatial correlation in the distribution of WFCEs concerning landowners’ goals, land use types, recreational opportunities, and forest management activities. Similarly, significant clusters of WFCEs were identified near state-protected forestlands to maintain habitat connectivity. The findings help understand the concentrations and variations of easement attributes and serve as a working guide to landowners and easement-holding organizations to locate and strategically target easements in Georgia.

Assessing golden‐winged warbler dispersal habitat in a highly parcelized landscape

AbstractGolden‐winged warblers (Vermivora chrysoptera) are facing population declines in the southern Appalachian Mountains. Breeding habitat loss is considered one of the primary reasons for golden‐winged warbler declines in the region. Expanding breeding habitat availability in a manner that promotes population expansion across an interconnected network of habitat patches is particularly problematic in a landscape dominated by private land ownership. We assessed the connectivity of golden‐winged warbler breeding habitat in a 29,680‐ha landscape with 5,664 ownership parcels between 2 state‐owned game lands in northwestern North Carolina, USA, in fall 2021. We created a connectivity map and provided examples of 3 means of prioritizing parcels for golden‐winged warbler habitat maintenance and management based on dispersal distances of fledglings that could return the following spring with prior familiarity of potential nesting areas. Prioritized parcels can guide land acquisition and conservation easement development as well as active management. Despite being highly parcelized, the area has both well‐connected and disjointed clusters of core habitat patches, but habitat management on privately owned parcels would be needed to connect core habitat patches to enable dispersing golden‐winged warbler fledglings to encounter potential breeding habitat that they could use the following spring.

Habitat leasing as an alternative to affirmative conservation easements in conserving wildlife on private lands

Habitat leasing as an alternative to affirmative conservation easements in conserving wildlife on private lands

Estimating the parcel-level impacts of agricultural conservation easements on farmland loss using satellite data in New England

The rapid loss of farmland to development has long been a concern of policymakers and conservation non-profits globally. In the United States, agricultural conservation easements are a widespread policy tool used to protect farmland from conversion to development in perpetuity. However, the extent to which these easements reduce farmland loss to development within their boundaries is rarely studied at the spatial scale at which easement adoption decisions are made: the individual parcel. Our case study from six New England states uses a rich dataset of 1.97 million parcels, novel estimates of annual parcel-level land cover change from 1988 to 2016, and a quasi-experimental research design to estimate the extent to which 3959 farmland easements avoided conversion of cropland to development. We examine and discuss the suitability of remote sensing data and quasi-experimental matching methods for impact assessments in this geographic and political context. Our empirical results suggest that agricultural conservation easements have reduced farmland loss to development. The magnitude of avoided farmland loss is small (0.0067% ± 0.0019% of parcel area per annum), largely because of a low background rate of farmland loss across New England (0.0027% of total area per annum). Our findings suggest that the spatial allocation of farmland easements has historically not prioritized the highest-threat locations where impacts would be most noticeable, as allocation is driven by a diverse range of goals in addition to avoiding farmland loss.

A hypothesis test for detecting distance-specific clustering and dispersion in areal data

Spatial clustering detection has a variety of applications in diverse fields, including identifying infectious disease outbreaks, pinpointing crime hotspots, and identifying clusters of neurons in brain imaging applications. Ripley’s K-function is a popular method for detecting clustering (or dispersion) in point process data at specific distances. Ripley’s K-function measures the expected number of points within a given distance of any observed point. Clustering can be assessed by comparing the observed value of Ripley’s K-function to the expected value under complete spatial randomness. While performing spatial clustering analysis on point process data is common, applications to areal data commonly arise and need to be accurately assessed. Inspired by Ripley’s K-function, we develop the positive area proportion function (PAPF) and use it to develop a hypothesis testing procedure for the detection of spatial clustering and dispersion at specific distances in areal data. We compare the performance of the proposed PAPF hypothesis test to that of the global Moran’s I statistic, the Getis–Ord general G statistic, and the spatial scan statistic with extensive simulation studies. We then evaluate the real-world performance of our method by using it to detect spatial clustering in land parcels containing conservation easements and US counties with high pediatric overweight/obesity rates.

Why Agree to a Forest Easement? Perception of the Residents about the Adaptation of the Conservation Easement in Qianjiangyuan National Park

Conservation easements (CEs) were introduced in the Chinese context to resolve the conflict between rural land use and area-based conservation measures. As conservation easements are usually set on private lands, little is known about their adaptation to the collective land tenure. We introduced a social-psychological aspect to sustainable livelihoods (SL) for an integrated decision-making mechanism to assess rural residents’ motivations for granting CEs. We surveyed farmers in the Qianjiangyuan National Park pilot area in order to explore how tangible factors, i.e., the livelihood assets, and intangible factors, i.e., farmers’ perceptions of the livelihood environment, affected their true feeling of conservation easements. Results suggested that CEs that were adapted to the collectively-owned forestland followed a well-established grassroots democracy but sacrificed the CE’s diversity in restricted uses tailored to specific landowners and properties. Institutional capital and perception of the economic environment appeared most important to affect farmers’ acceptance of CEs. Furthermore, the livelihood assets affected farmers’ perception of the livelihood environment, and their acceptance of CEs affected the perception of policy outcomes. Overall, our findings demonstrate the acceptance of conservation easements as a livelihood strategic choice and strengthen the importance of securing economic rights in the changing institutional environment.