Daniel C. Miller

University of Notre Dame | ND · Keough School of Global Affairs

Trees on farms are often overlooked in agricultural and natural resource research and policy in Sub-Saharan Africa. This article addresses this gap using data from the Living Standards Measurement Study-Integrated Surveys on Agriculture in five countries: Ethiopia, Malawi, Nigeria, Tanzania, and Uganda. Trees on farms are widespread. On average, al...

National political context is widely understood to be an important factor shaping the ecological and socio-economic impacts of protected areas (PAs) and other conservation interventions. Despite broad recognition that national political context matters, however, there is little systematic understanding about how and why it matters, particularly in...

Citizens, governments, and donors are increasingly demanding better evidence on the eff ectiveness of development policies and programs. Eff orts to ensure such accountability in the forest sector confront the challenge that the results may take years, even decades, to materialize, while forest-related interventions usually last only a short period...

Halting global biodiversity loss is central to the Convention on Biological Diversity and United Nations Sustainable Development Goals, but success to date has been very limited. A critical determinant of success in achieving these goals is the financing that is committed to maintaining biodiversity; however, financing decisions are hindered by con...

Forest protected areas (FPAs) remain a core strategy in efforts to advance global sustainability goals. Information on the effectiveness of this strategy in delivering environmental and socio-economic benefits is accumulating rapidly. Here, we review recent literature to assess current knowledge on FPA impacts, focusing on studies examining the gov...

Capacity development is crucial for enduring conservation success. Recent scholarship has called for a systems perspective based on input from local stakeholders to better understand and develop conservation capacity. However, few studies have adopted such an approach to explore interactions among capacities or how capacity development needs and pr...

Forests can help rural households cope with food insecurity challenges in the face of climate change while also sequestering carbon and advancing other sustainability objectives in low- and middle-income countries (LMICs). As such, participation in the forestry sector can contribute to achieving the Sustainable Development Goals (SDGs), especially...

The incorporation of trees on farms can help to improve livelihoods and build resilience among small-holder farmers in developing countries. On-farm trees can help gen- erate additional income from commercial tree harvest as well as contribute significant environmental benefits and ecosystem services to increase resiliency. Long-term benefits from...

Knowledge of what conservation interventions improve biodiversity outcomes, and in which circumstances, is imperative. Experimental and quasi‐experimental methods are increasingly used to establish causal inference and build the evidence base on the effectiveness of interventions, but their ability to provide insight into how and under what conditi...

Bending the curve on biodiversity loss will require increased conservation funding and a wiser resource allocation. Local conservation practitioner expertise will be vital in decision-making processes related to funding. Yet, the integration of their insights into funder priorities and strategies is often insufficient, particularly in countries whe...

Bending the curve on biodiversity loss will require increased conservation funding and a wiser resource allocation. Local conservation practitioner expertise will be vital in decision-making processes related to funding. Yet, the integration of their insights into funder priorities and strategies is often insufficient, particularly in countries whe...

Automated text categorization methods are of broad relevance for domain experts since they free researchers and practitioners from manual labeling, save their resources (e.g., time, labor), and enrich the data with information helpful to study substantive questions. Despite a variety of newly developed categorization methods that require substantia...

Addressing poverty is an urgent global priority. Many of the world's poor and vulnerable people live in or near forests and rely on trees and other natural resources to support their livelihoods. Effectively tackling poverty and making progress toward the first of the United Nations 2030 Sustainable Development Goals to “end poverty in all its form...

Understanding the contribution of forests to poverty alleviation and human well-being has never been more important. The effects of the COVID-19 pandemic are erasing gains in poverty reduction achieved over the past several decades. At the same time, climate change is increasing the frequency of extreme weather events and natural disasters, especia...

Background Agroforestry bridges the gap that often separates agriculture and forestry by building integrated systems to address both environmental and socio-economic objectives. Existing empirical research has suggested that agroforestry—the integration of trees with crops and/or livestock—can prevent environmental degradation, improve agricultural...

Urban protected areas are faced with numerous pressures from intensified land uses that jeopardize their sustainability, particularly in Central America where there is an abundance of areas managed for conservation yet limited financing. An understanding of the factors that influence public support for fee programs is of paramount importance but di...

Capacity development is critical to long-term conservation success, yet we lack a robust and rigorous understanding of how well its effects are being evaluated. A comprehensive summary of who is monitoring and evaluating capacity development interventions, what is being evaluated and how, would help in the development of evidence-based guidance to...

Globally, Brazil is one of the most important producers of wood products from forest plantations. Climatic conditions suitable for high productivity coupled with strong market demand and other factors have led to a marked increase in the area devoted to forest plantations in the country. Wood production from these plantations has brought important...

Major advances have been made over the past two decades in our understanding of the contribution forests and trees outside forests make to human well-being across the globe. Yet this knowledge has not always been incorporated into broader poverty and development policy agendas. The result is a missed opportunity to effectively and sustainably reach...

Background Agroforestry, the intentional integration of trees or other woody perennials with crops or livestock in production systems, is being widely promoted as a conservation and development tool to help meet the 2030 UN Sustainable Development Goals. Donors, governments, and nongovernmental organizations have invested significant time and resou...

The COVID‐19 pandemic, its impact on the global economy, and current delays in the negotiation of the post‐2020 global biodiversity agenda of the Convention on Biological Diversity heighten the urgency to build back better for biodiversity, sustainability, and well‐being. In 2019, the Intergovernmental Science‐Policy Platform on Biodiversity and Ec...

A COVID-19 járvány világszerte drámai és soha nem látott hatást gyakorolt az egészségügyre és a gazdaságra. Sok kormány gazdasági mentőcsomagot állít össze, hogy segítse a normális működéshez való visszatérést, ám az IPBES (Biológiai Sokféleség és Ökoszisztéma-szolgáltatás Kormányközi Testület) 2019-ben elfogadott Globális Felmérése szerint a gazda...

Planting trees has long been a major forest improvement and management activity globally. Forest plantations take years, even decades to mature and establish. Yet most national and international projects to support plantations are of relatively short duration, which presents a major challenge to near-term accountability as well as assessment of lon...

Secure property rights are widely understood as critical for socio-economic development and sustainable land management in forested areas. Policies and programs, ranging from devolution of specific resource rights to formal land titling, have therefore been implemented to strengthen forest tenure and property rights in countries around the world. D...

The Global Forest Expert Panel on Forests and Poverty chaired by Daniel C Miller prepared a scientific synthesis report and accompanying policy brief launched online on 15 October 2020, in the run-up to the International Day for the Eradication of Poverty. A total of 21 Panel members from 10 countries and an additional 33 experts contributed to and...

Poor and vulnerable people often depend on the use of natural resources and, in many regions, they are able to harness forest goods and services to manage and mitigate risk, especially in the face of crises. To secure and improve this vital function of forests, we need to adequately protect, manage and restore forests and duly consider forests and...

Forest landscapes are complex socio-environmental systems. The degree to which forests support human livelihoods, and humans affect forest ecology, depends in part on the spatial relationship between people and forests. Here, we estimate the number of people who live in and around forests globally. We combined forest cover and human population dens...

Trees on farms provide livelihood benefits to households across Africa. To date, however, evidence on how such trees affect household well-being over time remains lacking. Evidence is especially sparse at the national level where it has particular value for policymaking. To address this knowledge gap, we use nationally representative panel data fro...

The COVID-19 pandemic has caused dramatic and unprecedented impacts on both global health and economies. Many governments are now proposing recovery packages to get back to normal, but the 2019 Intergovernmental Science-Policy Platform for Biodiversity and Ecosystem Services Global Assessment indicated that business as usual has created widespread...

Urban growth in low- and middle-income countries has intensified the need to expand sanitation infrastructure, especially in informal settlements. Sanitation approaches for these settings remain understudied, particularly regarding multidimensional social-ecological outcomes. Guided by a conceptual framework (developed in parallel with this study)...

Sanitation remains a global challenge, both in terms of access to toilet facilities and resource intensity (e.g., energy consumption) of waste treatment. Overcoming barriers to universal sanitation coverage and sustainable resource management requires approaches that manage bodily excreta within coupled human and natural systems. In recent years, n...

Background Understanding how the conservation of nature can lead to improvement in human conditions is a research area with significant growth and attention. Progress towards effective conservation requires understanding mechanisms for achieving impact within complex social-ecological systems. Causal models are useful tools for defining plausible p...

Binding resource constraints in many low- and middle-income countries aggravate food insecurity risk in the face of climate change. To help mitigate such risk and increase food security, international development agencies have invested billions of dollars in climate-smart agriculture (CSA) programs over the past decade. However, rigorous evidence o...

Climate-smart agriculture (CSA) is increasingly important for advancing rural development and environmental sustainability goals in developing countries. Over the past decade, the international community has committed billions of dollars to support various practices under the banner of CSA. Despite this effort, however, CSA adoption remains low in...

Agroforestry is widely promoted for delivering not only the main food security objective of climate-smart agriculture (CSA) but also increasing resilience and mitigating climate change. Yet rigorous estimates of the impact of this pathway on agricultural yields in CSA interventions remain limited. Here we analyze maize yield effects of agroforestry...

Binding resource constraints in many developing countries aggravate food insecurity risk in the face of climate change. To help mitigate such risk and increase food security, international development agencies have invested billions of dollars in climate-smart agriculture (CSA) programs over the past decade. However, rigorous evidence on the food s...

The role of forests in supporting current consumption and helping people cope with seasonal, climatic, and other stressors is increasingly well understood. But can forests help rural households climb out of poverty? And can forests provide a pathway to prosperity that includes more widely shared economic benefits and improvements in other aspects o...

Sanitation is often viewed as an unmentionable social obligation. Efficiently delivering this public good may involve use of ecosystem services, such as pollutant assimilation in wetlands, yet sanitation need not only consume: recovered resources (nutrients, organic matter and water) may enhance multiple ecosystem services, thereby expanding the va...

Improved knowledge of long-term social and environmental trends and their drivers in coupled human and natural systems is needed to guide nature and society along a more sustainable trajectory. Here we combine common property theory and experimental impact evaluation methods to develop an approach for analyzing long-term outcome trajectories in soc...

This file includes Figures A-AE, Tables A-I and references for supporting information citations. (DOCX)

Machine learning promises to advance analysis of the social and ecological impacts of forest and other natural resource policies around the world. However, realizing this promise requires addressing a number of challenges characteristic of the forest sector. Forests are complex social-ecological systems (SESs) with myriad interactions and feedbacks...

Background Agroforestry bridges the gap that often separates agriculture and forestry by building integrated systems that address both environmental and socio-economic objectives. Agroforestry can improve the resiliency of agricultural systems and mitigate the impacts of climate change. Existing research suggests that integrating trees on farms can...

Background Forests provide an essential resource to the livelihoods of an estimated 20% of the global population. The contribution of forest ecosystems and forest-based resources to poverty reduction is increasingly emphasized in international policy discourse and conservation and development investments. However, evidence measuring the effect of f...

Los bosques y los árboles contribuyen de muchas formas a reducir la inseguridad alimentaria, apoyando medios de vida sostenibles y mitigando la pobreza. En el informe de la FAO sobre el Estado de los bosques del mundo 2014 (SOFO 2014; FAO, 2014a) se subraya que, para casi un tercio de la población mundial, la madera es la principal fuente de energí...

Supplementary Methods The response variable: biodiversity decline at the country scale Our analysis required us to measure changes in biodiversity status at the scale of sovereign countries but the standard measure we used of biodiversity change (change in Red List status 3,31,32) applies to species. An algorithm to convert species-level change to...

This corrects the article DOI: 10.1038/nature24295. The correction is a simple change in the abstract, where the subeditors had wrongly changed the description of the study period. The correct period is that described in the Methods: funding levels and socioeconomic predictors for 1992-2003 were used to explain biodiversity change for 1996-2008 (20...

Rapid growth in environmental research (Li & Zhao 2015) presents a potential wealth of information for conservation decision‐making. Evidence synthesis methods (e.g. systematic maps, reviews, meta‐analyses) (Pullin & Knight 2009) are critical for garnering actionable insight from published research, yet come with high resource demands (time and fun...

To achieve global food security, we need to approximately double food production over the coming decades. Conventional agriculture is the mainstream approach to achieving this target but has also caused extensive environmental and social harms. The consensus is that we now need an agriculture that can “multi-functionally” increase food production w...

Background Property rights to natural resources comprise a major policy instrument in efforts to advance sustainable resource use and conservation. Debate over the relative effectiveness of different property rights regimes in reaching these goals remains controversial. A large, diverse, and rapidly growing body of literature investigates the links...

Background Forests provide an essential resource that support the livelihoods of an estimated 20% of the global population. Forests are thought to serve in three primary roles to support livelihoods: subsistence, safety nets, and pathways to prosperity. While we have a working understanding of how poor people depend on forests in individual sites a...

The relationship between forests and people is of substantial interest to peoples and agencies that govern and use them, private sector actors that seek to manage and profit from them, NGOs who support and implement conservation and development projects, and researchers who study these relationships and others. The term 'forest-dependent people' is...

Background Global policy initiatives and international conservation organizations have sought to emphasize and strengthen the link between the conservation of natural ecosystems and human development. While many indices have been developed to measure various social outcomes to conservation interventions, the quantity and strength of evidence to sup...

Too many studies go unread. Collate them to enable synthesis and guide decision-making in sustainability, urge Madeleine C. McKinnon and colleagues.

International conservation donors have spent at least $3.4 billion to protect biodiversity and stem tropical deforestation in Africa since the early 1990s. Despite more than two decades of experience, however, there is little research on the effect of this aid at a region-wide scale. Numerous case studies exist, but show mixed results. Existing res...

Background Property rights to natural resources comprise a major policy instrument for those seeking to advance sustainable resource use and conservation. Despite decades of policy experimentation and empirical research, however, systematic understanding of the influence of different property rights regimes on resource and environmental outcomes re...

There is little systematic knowledge about the nature, extent, and trends of international aid for projects that link biodiversity conservation and development goals. This study uses a new dataset to analyze spatial and temporal patterns of such aid globally over the past three decades. Results reveal significant donor selectivity in aid allocation...

The News & Analysis stories “Fragile wetland will test Turkey's resolve in protecting biodiversity” and “For scientists, protests morph into fight for academic freedom” (J. Bohannon, 26 July, p. [332][1]) deserve to be set in a wider context. Turkey is covered by three global biodiversity

This dissertation advances theoretical and empirical knowledge at an especially challenging research frontier: that of the social and ecological impacts of international aid within and around national parks and other protected areas in low-income tropical countries. Systematic knowledge of these impacts, the relationships among them, and the causal...

Inadequate funding levels are a major impediment to effective global biodiversity conservation and are likely associated with recent failures to meet United Nations biodiversity targets. Some countries are more severely underfunded than others and therefore represent urgent financial priorities. However, attempts to identify these highly underfunde...

It is generally recognized that addressing the ongoing loss of global biodiversity requires a substantial increase in funding for conservation activities, particularly in developing countries. An increasing interest in Payment Mechanisms for Ecosystem Services (PES) begs the question of whether a focus on developing payment mechanisms will also red...

There is little systematic knowledge about the magnitude and allocation of international funding flows to support biodiversity conservation in the developing world. Using the newly released AidData compilation, we present a comprehensive assessment of official donor assistance for biodiversity during 1980–2008. We find that biodiversity aid increas...

Funding for conservation is limited, and its investment for maximum conservation gain can likely be enhanced through the application of relevant science. Many donor institutions support and use science to pursue conservation goals, but their activities remain relatively unfamiliar to the conservation-science community. We examined the priorities an...