Shauna BurnSilver

Evolution of models to support community and policy action with science: Balancing pastoral livelihoods and wildlife conservation in savannas of East Africa

We developed a “continual engagement” model to better integrate knowledge from policy makers, communities, and researchers with the goal of promoting more effective action to balance poverty alleviation and wildlife conservation in 4 pastoral ecosystems of East Africa. The model involved the creation of a core boundary-spanning team, including community facilitators, a policy facilitator, and transdisciplinary researchers, responsible for linking with a wide range of actors from local to global scales. Collaborative researcher−facilitator community teams integrated local and scientific knowledge to help communities and policy makers improve herd quality and health, expand biodiversity payment schemes, develop land-use plans, and fully engage together in pastoral and wildlife policy development. This model focused on the creation of hybrid scientific−local knowledge highly relevant to community and policy maker needs. The facilitation team learned to be more effective by focusing on noncontroversial livelihood issues before addressing more difficult wildlife issues, using strategic and periodic engagement with most partners instead of continual engagement, and reducing costs by providing new scientific information only when deemed essential. We conclude by examining the role of facilitation in redressing asymmetries in power in researcher−community−policy maker teams, the role of individual values and character in establishing trust, and how to sustain knowledge-action links when project funding ends.

Quantifying declines in livestock due to land subdivision

Abstract In Kajiado District, Kenya, ranches held communally by Maasai are being subdivided into individually owned parcels. Livestock owners know that herds on parcels that are too small cannot be viable, but the decline in the capacity of parcels to support livestock has not been quantified. We used ecosystem modeling to represent the effects of subdivision as Maasai group ranches were divided into 196, 10, 5, 3, and 1 km2 parcels. Within the spatially explicit, process-based Savanna ecosystem model, we used maps that constrained the movements of livestock to be within parcels. We also modeled cooperative grazing associations, giving groups of herders access to parcels composed of dispersed or contiguous 1 km2 parcels. Vegetatively productive areas had higher carrying capacities when isolated because resident animals did not compete with animals moving in seasonally from other areas. In a ranch of low but heterogeneous productivity, we saw a steady decline in capacity under subdivision, until 25% fewer livestock could be supported on the ranch of 1 km2 parcels relative to the intact ranch. On a ranch with both low productivity and heterogeneity, 20% fewer livestock were supported when parcels were still 10 km2. The most productive ranch studied saw small population changes with subdivision. Participation in grazing associations was helpful in the ranch intermediate in productivity and heterogeneity, but not other ranches. Subdivision of Kajiado lands might be inevitable, but our results show the relative benefits to stakeholders if land owners and policy makers act to maintain open or flexible access to individually held parcels.

Multiplex social ecological network analysis reveals how social changes affect community robustness more than resource depletion

Significance Social capital ties are ubiquitous in modern life. For societies with people and landscapes tightly connected, in variable or marginal ecosystems, and with unreliable market sectors, social relations are critical. Each relation is a potential source of food, information, cash, labor, or expertise. Here, we present an analysis of multiplex, directed, and weighted networks representing actual flows of subsistence-related goods and services among households in three remote indigenous Alaska communities exposed to both extreme climate change and industrial development. We find that the principal challenge to the robustness of such communities is the loss of key households and the erosion of cultural ties linked to sharing and cooperative social relations rather than resource depletion. Network analysis provides a powerful tool to analyze complex influences of social and ecological structures on community and household dynamics. Most network studies of social–ecological systems use simple, undirected, unweighted networks. We analyze multiplex, directed, and weighted networks of subsistence food flows collected in three small indigenous communities in Arctic Alaska potentially facing substantial economic and ecological changes. Our analysis of plausible future scenarios suggests that changes to social relations and key households have greater effects on community robustness than changes to specific wild food resources.

Using Coupled Simulation Models to Link Pastoral Decision Making and Ecosystem Services

Historically, pastoral people were able to more freely use the services their semi-arid and arid ecosystems provide, and they adapted to changes in ways that improved their well-being. More recently, their ability to adapt has been constrained due to changes from within and from outside their communities. To compare possible responses by pastoral communities, we modeled ecosystem services and tied those services to decisions that people make at the household level. We created an agent-based household model called DECUMA, joined that model with the ecosystem model SAVANNA, and applied the linked models to southeastern Kajiado District, Kenya. The structure of the new agent-based model and linkages between the models are described, and then we demonstrate the model results using a scenario that shows changes in Maasai well-being in response to drought. We then explore two additional but related scenarios, quantifying household well-being if access to a grazing reserve is lost and if access is lost but those most affected are compensated. In the second scenario, households in group ranches abutting the grazing reserve that lost access had large declines in livestock populations, less food energy from animal sources, increased livestock sales and grain purchases, and increased need for supplemental foods. Households in more distant areas showed no changes or had increases in livestock populations because their herds had fewer animals with which to compete for forage. When households neighboring the grazing reserve were compensated for the lease of the lands they had used, they prospered. We describe some benefits and limitations of the agent-based approach.

Does Pastoralists' participation in the management of national parks in northern Norway contribute to adaptive governance?

Norwegian protected areas have historically been managed by central, expertise bureaucracy; however, a governance change in 2010 decentralized and delegated the right to manage protected areas to locally elected politicians and elected Sami representatives in newly established National Park Boards. We explore how this new governance change affects adaptive capacity within the reindeer industry, as the reindeer herders are now participating with other users in decision-making processes related to large tracts of protected areas in which they have pasture access. Aspects within adaptive capacity and resilience thinking are useful as complementary dimensions to a social-ecological system framework (Ostrom 2007) in exploring the dynamics of complex adaptive social-ecological systems. The National Park Board provides a novel example of adaptive governance that can foster resilient livelihoods for various groups of actors that depend on protected areas. Data for this paper were gathered primarily through observation in National Park Board meetings, focus groups, and qualitative interviews with reindeer herders and other key stakeholders. We have identified certain aspects of the national park governance that may serve as sources of resilience and adaptive capacity for the natural system and pastoral people that rely on using these areas. The regional National Park Board is as such a critical mechanism that provides an action arena for participation and conflict resolution. However, desired outcomes such as coproduction of knowledge, social learning, and increased adaptive capacity within reindeer husbandry have not been actualized at this time. The challenge with limited scope of action in the National Park Board and a mismatch between what is important for the herders and what is addressed in the National Park Board become important for the success of this management model.

Large-Scale Movements of Large Herbivores Livestock following changes in seasonal forage supply

Large-scale movements allow large herbivores to cope with changes in seasonal forage supply. Pastoralists use mobility to convert low-value ephemeral forage into high-value livestock. Transhumant pastoralists may move livestock less than ten to hundreds of kilometres. In semi-arid tropical sites, water and forage shortages in the dry season cause pastoral livestock to move to water or key resource areas. In temperate summers, livestock may be moved to higher-elevation snow-free meadows. In winters, animals may be moved lower to warmer sites, or to mountain valleys protected from steppe winds. Despite the recognised value of mobility, pastoral mobility is being reduced around the world. Changes in the mobility of three pastoral groups are reviewed, the Aymara of the South-American highlands, Mongolians, and the Maasai of Kenya and Tanzania, for which quantitative results are given. The Maasai of Kajiado District, Kenya are subdividing some group ranches into individually owned parcels. In subdivided Osilalei Group Ranch, herders moved an average of 5.6 km per day, whereas in undivided northern Imbirikani, herders moved 12.5 km per day. Residents of northern Imbirikani accessed more green vegetation the more they moved, whereas those in subdivided southern Imbirikani did not. Maasai selected areas with more heterogeneous vegetation during the dry season than found at their permanent households. In modelling, subdividing to 100-ha parcels allowed Eselengei Group Ranch to support 25% fewer livestock by mass, even though the area remained the same. For any pastoralist, the costs of mobility must be weighed against benefits, but pastoralists have demonstrated flexibility in their mobility, if constraints such as human population growth and limitations in land access are not too great. We show that pastoralists have successfully evolved methods of herding livestock to access adequate forage in areas of variable climate

Nutritional Status of Maasai Pastoralists under Change

This study assesses the nutritional status of Maasai pastoralists living in a period of great social, economic and ecological changes in Kajiado County, southern Kenya. Data on weight, height, skinfolds, and circumferences were collected from 534 individuals in the year 2000. The data were used to describe mean differences in human nutrition between ages, sexes, and within and among three Group Ranches. Nutritional data and diet recall data were compared with past studies of Maasai nutrition from 1930 to 2000. Results indicate that nutritional status is poor and has remained so despite numerous changes to the social-ecological system including livelihood diversification, sedentarization, human population growth and decreased access to vegetation heterogeneity. Imbirikani Group Ranch had better access to infrastructure and markets and some measures of nutritional status were better than for individuals in other group ranches. However, nutritional status remains poor despite transitioning to greater market integration.

Integrated Assessment of the Dynamics, Stability and Resilience of the Inner Mongolian Grazing Ecosystems

Abstract This paper presents results from an ecological assessment of land use and climate change in the Inner Mongolia Autonomous Region. Using a combination of fieldwork, rangeland monitoring, and simulation analyses, this study tackles the socio-economic issues faced by pastoralists in this region, focusing on linkages between climate, land use and human welfare. Employing a systems approach, we use the SAVANNA ecosystem simulation model to examine the long-term effects of anthropogenic pressures on the biophysical system. Our model demonstrates that in order to maintain grassland sustainability, climate variations must be considered by land managers making decisions on grazing. Our model indicates that traditional ways of nomadic herding, where nomads were able to move their herds in response to changing distributions of available forage, would be more adaptive in spatially and temporally variable climate and foraging conditions. In contrast, increased sedentarisation and restrictions on grazing movements imposed by political boundaries or fenced croplands may endanger sustainability by reducing options for adaptive grazing tactics. We suggest that new grazing systems must be developed to mitigate these changes in land use and land tenure. Keywords: degradation, ecosystem modeling, integrated assessment, land use change, SAVANNA, sedentary and nomadic herding systems Introduction The Inner Mongolian Autonomous Region (IMAR), in China, has seen a shift from the traditional nomadic herding system still observed in neighbouring Mongolia to a more sedentary form of land use in the last sixty years. There has been an increase in human population as well, stemming from both intrinsic population growth and immigration. The consequences of these changes have resulted in degradation, which not only limits available resources needed for an expanding population, but has increased the amount of dust storms (Zhou et al. 2002, Liu et al. 2003). There has also been a decline in the traditional understanding of the land, resulting from land tenure change and an influx of immigrant populations, as well as changes in land use, including increased cultivation to support the influx of people. Furthermore, this region is vulnerable to changes in climate, which could have a compounding effect on the ecosystem when coupled with existing land use changes. We conducted an integrated assessment to understand the anthropogenic and biophysical stresses on the Inner Mongolian steppe ecosystem, which considered aspects of land use, vegetation, climate and policy perspectives. This article is a compilation of our results, where we assessed the long-term ecological consequences of land use and climate change in the IMAR by conducting fieldwork, rangeland monitoring and simulation analyses. Field studies were conducted to understand the socioeconomic issues faced by the people in this region, focusing on linkages between climate and human land use and the resulting effects on human welfare and land use. Based upon this empirical information, we used a systems approach with the SAVANNA ecosystem simulation model to examine the long-term effect of these anthropogenic pressures on the biophysical system. The modelling exercises demonstrated that in order to maintain grassland sustainability, climate variations must be considered by land managers making decisions on grazing. If predicted climate change occurs, which could include a drier and warmer temperature regime, stocking rates must be adjusted in response to changes in the timing and amount of forage production. The modelling simulations indicated that traditional ways of nomadic herding, where nomads were able to move their herds in response to changing distributions of available forage, would be more adaptive in spatially and temporally variable climate and foraging conditions. In contrast, increased sedentarisation and restrictions on grazing movements imposed by political boundaries or fenced croplands may endanger sustainability by reducing options for adaptive grazing tactics. …

Linking Pastoralists to a Heterogeneous Landscape

Experience gained inlooking at land-use change issues over recent decades has shown that human land-use strategies impact and are simultaneously impacted by ecological patterns and processes. In this chapter, we provide an example of a methodology to quantify the linkages between people and environment in a communal resource landscape and detect the impacts of landscape patterns on human land use. Pastoral production strategies in semiarid regions were predicated historically on opportunistic and extensive livestock movements in search of grazing and water across heterogeneous landscapes. However, macroscale political-economic factors that drive land subdivision and economic sedentarization compromise the ability of herders to maintain large-scale and opportunistic grazing patterns by fragmenting the landscape. We used remote sensing, GIS, GPS, and household socioeconomic surveys to: (1) identify a methodology to quantify the ecological heterogeneity of pastoral landscapes in Kajiado District, Kenya, (2) identify the daily spatial scale of pastoral resource use, and (3) illustrate the degree of seasonal variability inherent in this example of a semiarid pastoral system. We defined landscape heterogeneity using NDVI images for wet and dry periods of the year, a 1-km resolution digital elevation model, and a soils layer. We merged heterogeneity layers for wet/dry NDVI, elevation, and soils to form six combinations of heterogeneity indices, then used Monte Carlo assessments to quantify the degree of selection pastoralists made for landscape heterogeneity. Daily pathways did not reveal selection within seasons. Daily path lengths were related to the degree of subdivision and economic sedentarization of households. Integrating annual grazing pathways into these analyses will be a key to better depicting pastoralists’ relationships with landscape heterogeneity.

Arctic sustainability research: toward a new agenda

ABSTRACT The Arctic is among the world’s regions most affected by ongoing and increasing cultural, socio-economic, environmental and climatic changes. Over the last two decades, scholars, policymakers, extractive industries, local, regional and national governments, intergovernmental forums, and non-governmental organizations have turned their attention to the Arctic, its peoples and resources, and to challenges and benefits of impending transformations. The International Conference on Arctic Research Planning (ICARP) has now transpired three times, most recently in April 2015 with ICARP III. Arctic sustainability is an issue of increasing concern within the Arctic and beyond it, including in ICARP endeavors. This paper reports some of the key findings of a white paper prepared by an international and interdisciplinary team as part of the ICARP-III process, with support from the International Arctic Science Committee Social and Human Sciences Working Group, the International Arctic Social Sciences Association and the Arctic-FROST research coordination network. Input was solicited through sharing the initial draft with a broader network of researchers, including discussion and feedback at several academic and community venues. This paper presents a progress report on Arctic sustainability research, identifies related knowledge gaps and provides recommendations for prioritizing research for the next decade.