Nenets migration in the landscape: impacts of industrial development in Yamal peninsula, Russia
© Degteva and Nellemann; licensee Springer. 2013
Received: 6 March 2013
Accepted: 4 June 2013
Published: 7 August 2013
Worldwide, traditional pastoralists are facing challenges of industrial development and competitive land use interfering with their nomadic lives. The Yamal peninsula in western Siberia, a homeland of nomadic Nenets reindeer herders, has been subjected to the Bovanenkovo gas field industrial development since the 1980s. We quantitatively assess how industrial development impacts Nenets migration routes and camp sites and discuss implications for their quality of life. In cooperation with herders, we mapped 21 migration routes and followed two reindeer herder brigades for 15 weeks in July 2008 to August 2009, providing insight into both the social and physical challenges facing Nenets herders. Terrain ruggedness, willow cover, migration routes and camp (chum) sites were recorded on 2 × 2 km grid cells on topographic maps. Rugged terrain with willows (31% of the study area), which is land particularly suitable and valuable for reindeer husbandry, contained nearly 61% of all migration routes. All clusters (>8 km2) of rugged terrain were used for grazing, migration and camp sites, reflecting few alternative land opportunities. Many 1- to 3-km narrow passages of such terrain created natural ‘bottlenecks’ for Nenets migrations in the Yamal landscape. These bottlenecks, used by three to six different reindeer brigades, are crucial for the herders, while competition for land with industrial developers within these areas is particularly high. The physical footprint of Bovanenkovo installations is small, but for the three herding units migrating through these bottlenecks, the industrial development resulted in blockage of two out of four possible routes, loss of major grazing areas and subsequent loss of access to at least 18 traditional camp sites and one sacred site along their traditional route. The combined actions of physical and social impacts from industrial development have reduced migration opportunities and the quality and access to natural resources in the herding cycle. This has thus affected the lives and well-being of indigenous herders in Yamal.
Traditional pastoralists are confronted with increasing competition and possible loss of seasonal pastures as infrastructure such as roads, pipelines, power lines and dams, along with urban development and settlement, interferes with migrations (UNEP 2001; Vistnes et al. 2009; Nkedianye et al. 2011; Raziq et al. 2011).
Across the past four decades, the Arctic, home to numerous indigenous peoples, has increasingly received attention for its rising role in the global energy and mineral supply (UNEP 2001, 2010). The Yamal-Nenets Autonomous Okrug - with approximately 90% of Russia's and 20% of the world's gas production - is strategically important for the Russian Federation and European energy supply (AMAP 2008). The Yamal peninsula is increasingly exposed to a network of developing infrastructure (Kumpula et al. 2012).
These regions are also a home to a diversity of both indigenous peoples and rich natural resources. Reindeer (Rangifer tarandus tarandus) husbandry has existed for over 2,000 years (Federova 2003), and at least 20 different Arctic indigenous people are still partly or fully nomadic and reliant on reindeer herding for their livelihoods, cultural identity and food security (Turi 2002).
As oil and gas production takes place across the traditional lands of indigenous hunters or herders, the development also influences wildlife and herders directly, such as by impacting migration patterns and range use (Stammler 2005, 2011; Forbes et al. 2009; Kumpula et al. 2011). Indeed, the vast majority of these developing complexes consist of expanding infrastructure networks comprising elevated gravel roads, pipelines, power lines, drill pads and production and support facilities, with related human traffic and transport, including vehicles and air traffic (Forbes 1999; Forbes et al. 2009; Kumpula et al. 2011; Magga et al. 2011). There is already substantial documentation of Rangifer avoidance to a range of human transportation and settlement infrastructure and subsequent habitat loss for wild reindeer and caribou, as well as semi-domesticated reindeer (Wolfe et al. 2000; Cameron et al. 2005; Vistnes and Nellemann 2009; Anttonen et al. 2011).
Most Arctic industrial development may be substantial locally but typically covers less than 1% to 2% of the territory in which development takes place (Vistnes and Nellemann 2009). Furthermore, several studies have shown that important grazing ranges are lost disproportionately and become unavailable, as development tends to target certain types of terrain for construction (Nellemann and Cameron 1998, 1996). Development has also been shown to impact much greater areas beyond that of the initial footprint, including abandonment of calving grounds by caribou and reindeer (Joly et al. 2006). While several valuable studies have assessed the situation for Nenets herders exposed to development, few quantitative data have actually shown to what extent this development actually impacts the reindeer herder migrations and access to grazing land and the ‘quality’ of pastures from the herder's point of view, in the seemingly vast landscape of the Nenets Autonomous Okrug (AO), Khanty-Mansi AO and Yamal-Nenets AO, Russia (Forbes et al. 2009; Stammler 2005, 2011; Behnke et al. 2011; Kumpula et al. 2011). A few studies have shown that some of the industrial development indeed does interfere with existing migrations (Forbes et al. 2009; Anttonen et al. 2011; Kumpula et al. 2011). However, the availability of alternative terrain suitable for migration and the numerous requirements of a nomadic society remain unclear, including the possible competition from industry for high-value locations.
The study was conducted in the Yamal peninsula, located in the Yamal-Nenets Autonomous Okrug (YNAO), in West Siberia, Russia. The peninsula is about 700 km long and 150 km wide. Yamal peninsula is characterized by an arctic plain, typically vegetated by dry, moist and wet graminoid tundra, interspersed with Betula sp. and predominantly Salix sp. communities (Forbes 1995; Forbes and Jeffries 1999). The area is a thermokarst arctic plain, with permafrost and cryogenic erosion, abundant with thaw lakes and polygons (Walker et al. 2009).
The area is crucial to the Nenets reindeer herders and their reindeer (Stammler and Wilson 2006; Forbes et al. 2009). According to official statistics, in the YNAO some 570,000 to 600,000 semi-domesticated reindeer are owned by over 14,500 nomadic people, including Nenets, Komi, Khanty and Selkup families (2010). Approximately 270,000 reindeer and about 1,000 fully nomadic households, comprising ca. 5,000 nomadic people, live on the Yamal peninsula (YNAO Statistics 2010).
Reindeer herding is organized in large enterprises, former sovkhozes - state managed agricultural farms. Each reindeer herding enterprise is composed of several brigades according to the number of the herds. Several herders are working together and migrating with their families all year around in a brigade. In addition, there are also a great number of private herders, which are also divided into units, to a certain extent comparable to the brigades. However, these private units are characterized by higher level of flexibility both in migration and social organisation. The private herders gather in larger units during insect infestations in mid-summer and split up in smaller family groups in late summer for the remaining year.
There is substantial diversity in herding traditions and migrations in the Yamal. Many Nenets herders begin their migrations from the wintering areas in the south in mid-late March. There is substantial variation concerning timing of the onset of migration, both for the individual units as well as among different brigades, with some starting both earlier and others later, dependent upon weather, total distance to summer pastures and dynamics and coordination with the migrations of other herders and the ecology of the reindeer (Dwyer and Istomin 2008; Istomin and Dwyer 2009, 2010). In early spring, in cold weather and favourable snow conditions for migration, Yamal herders can move up to 30 km on a good day, while later in summer, as snow melts, they typically move 4 to 7 km a day, sometimes as much as 10 to 12 km, following the best route in the terrain for the sleds. Distances travelled each day depend on a range of conditions including, but not limited to, availability of pastures, weather, distance to other herds and ground conditions.
The industrial development commenced in the late 1980s, slowed down after the disintegration of the USSR and subsequent financial crisis during the mid-1990s in Russia and then increased substantially again in 2004 when the world prices for hydrocarbon rose (Forbes et al. 2009; Kumpula et al. 2011).
The Bovanenkovo industrial complex (BIC) is composed of an extensive infrastructure network consisting of roads, gas fields, living quarters, production facilities, power and pipelines, and gravel pits and quarries, creating substantial dust (Forbes 1995; Myers-Smith et al. 2006).
We investigated the study area at two levels: (1) The locations of 21 migration routes were provided by local Nenets reindeer herders and derived from official data from the Russian administration in Salekhard and Yar-Sale, describing the large-scale migrations in the area. (2) At a more fine-scale level, one person followed reindeer herding units migrating through the BIC from 27 June to 26 August in 2008, and two persons followed two brigades from 1 July to 1 August in 2009. Migration routes, stops and camp sites were recorded using GPS or drawn on 1:100,000 topographic maps, along with the location of reindeer herders' crossing points of infrastructure and natural barriers. The names and numbers of brigades are anonymized for their protection throughout.
The distribution of gas extraction and transportation infrastructure was available from maps and two satellite image analyses (Oskal et al. 2010). LANDSAT satellite images were provided by Dr. Nancy G. Maynard of NASA Goddard Space Flight Centre, USA from 1987 to 2009 to map the gradual development of the Bovanenkovo industrial complex. For more updated information on infrastructure development, a comparison of various imagery and satellites has recently been produced (Kumpula et al. 2012). These data were not available to the authors during this study.
Information from herders was then cross-checked and compared with official maps and data and other land use representatives and for specific routes through and near the Bovanenkovo. Field records were based on map recordings and GPS to identify possible discrepancies, if any.
The distribution of rugged terrain (Nellemann and Thomsen 1994; Nellemann and Fry 1995), swamps and larger rivers are also major factors impacting herders, industrial developers and reindeer. Rugged terrain does not necessarily reflect steep or mountainous terrain, as the tundra plains are extremely flat, but reflect the undulating nature of the landscape where even slight undulations and changes in aspect have major effects on drainage and plant ecology. In the seemingly flat landscape of the Yamal peninsula, even slight differences in terrain of a few metres or even tens of centimetres can greatly influence drainage, vegetation and snow in winter, and hence plant phenology and forage conditions, as has been demonstrated on the flat North Slope coastal plain of Alaska (Nellemann and Thomsen 1994). Rugged or undulating terrain in an otherwise flat landscape firstly influences snowmelt, radiation and nutrient availability, and hence subsequently both vegetation distribution and plant phenology, which in terms affect reindeer grazing conditions (Nellemann and Thomsen 1994; Nellemann and Cameron 1998, 1996). Such terrain is also attractive to industrial developers as it comprises well-drained ground suitable for construction purposes (Nellemann and Cameron 1996). Rugged terrain is important to the herders for both travel and especially availability of dry camp sites and access to Salix sp. for firewood, an essential and critical resource in the everyday life of the herders. A unique feature of rugged terrain is that it supplies a wider range of resources - for herders and reindeer in different forms - within short horizontal distances.
We divided the entire study area into 2 × 2 km grid cells on 1:100,000 scale topographic maps with a contour interval of 20 m. The maps dated 1966 to 1987 also contained vegetation consisting of mainly willow (Salix sp.) communities and wetland tundra. The topographic maps were the only ones available to the authors at such detailed scale; topography and lakes matched well across borders on maps and images, even with decades in age between maps, reflecting slow changes even in an active thermokarst landscape. Here, terrain ruggedness indices (Nellemann and Thomsen 1994) were calculated on each grid cell. We also classified grid cells as having more or less than 25% willow cover as derived from the maps. Currently, as a result of climate change, the tundra is ‘greening’ through the growth and widening of willow communities (Forbes et al. 2010; Macias-Fauria et al. 2012). Indeed, for our analysis here, the maps are only used as an indication for a very rough description of areas with a relatively high abundance of willows, as they are likely expanding across the tundra. As willow communities are considered important for both reindeer and herders, we analysed the distribution and use, as given by the presence of migration routes in 1-km-wide belts, of rugged terrain with >25% occurrence of willows. We classified these grid cells further into developed (any infrastructure present) and undeveloped. We also registered all grid cells used for migration or camp sites. Chi-square analysis of rugged terrain was used to calculate use versus availability of different user categories.
Distribution of migration routes and industrial barriers
The official migration routes of reindeer herding brigades were closely spaced from winter areas across the Ob Bay, running further from the southern part of the Yamal peninsula northwards approximately in parallel to the west and east coasts (Figure 2 ). The figure also shows routes of herding brigades in the northern part of the peninsula - north from the Kharasavey River, the so-called Seyakha tundra, where migrations are shorter and often circulate. The same migration patterns are used by private herders; however, their migrations are not formalised by the official land tenure system. Figure 1 also shows the distribution of private reindeer herder units exercising very short migrations in Novy Port area and in Seyakha tundra. In total, Figure 2 covers the migration routes from 36 brigades and a substantial number of private reindeer units, giving a total of over 1,000 households of nomadic reindeer herders in the Yamal peninsula.
In general, in the western and southwestern part of Yamal, brigades and private units migrate mainly in parallel routes (with some diversity); however, the closest units also often have to maintain distance to other herders to avoid mixing different herds during grazing, when they follow the same routes, especially through bottlenecks in the terrain.
Figure 4 also shows some of the ongoing and publicly available planned infrastructure development for the near future. These, in turn, will substantially increase the interferences of a large share of migration routes across the peninsula.
Use and availability of rugged, elevated terrain by reindeer herders
Land use was mapped in greater detail in the extended Bovanenkovo study area (Figure 4). Here, 21 migration routes, currently exercised by 15 reindeer herding units, were identified and drawn on 1:100,000 topographic maps.
Patch size and connectivity of patches influenced choice of migration routes (Figure 4). The selection of rugged terrain was even further evident at larger scales when observing use of larger clusters of rugged terrain with willows. Of the remaining 49% of rugged terrain with willows, only 1% (nine cells) was not part of a larger cluster of rugged terrain. Of individual patches with >8 km2 (>2 contiguous cells), absolutely all patches (100%) were used for migration, although comprising <30% of the study area.
The width or length of the patches also influenced their use for migration by creating bottlenecks for migration (Figure 4). In at least nine locations, >3 brigades had to use the same corridors to move from one patch to another, which are generally less than 4 km wide and sometimes as narrow as 1 km only, with the actual natural crossing point being much, much smaller. These corridors were up 20 km long. As is seen further below, these narrow corridors or ‘bottlenecks’ made the herders particularly sensitive to development of any infrastructure placement crossing or targeting such elevated terrain in the otherwise flat wet tundra.
Changes in development (land use) 1987 to 2009 in the Bovanenkovo core study area
In this area, four migration routes of two brigades and one private herding unit were used prior to the industrial development (Figure 7). However, after the industrial development took place, the two northernmost routes were physically blocked, and only the two rather close routes in the southern part of the Bovanenkovo industrial complex are still possible. Here, brigade 4 had to cross three roads in 2008 and one additional road in 2009, a total of four sand and paved roads, in addition to a major elevated site just at the crossing point of a pipeline.
Additional file 1: Reindeer herders crossing Bovanenkovo industrial complex and roads with their reindeer during migration. (WMV 9 MB)
This was even more obvious inside the actual Bovanenkovo gas field. Here, for several critical passages on elevated land through wet marshes, several parallel pipelines and roads and even buildings were physically placed directly in the only possible narrow passages for migration across long stretches as much as approximately 21 km, targeting the same limited drier land.
The former northernmost migration route had fewer stretches with crossing infrastructure. However, due to higher abundance of marshes and impassable wetlands, the options for migration were more limited. Indeed, this route was physically blocked by the placement of a plant and large quarry in one bottleneck, rendering the entire northernmost route useless. This route was normally used on the way from the summer pastures to the winter and sometimes towards the summer pastures by the private unit in particularly dry years where travelling was possible in this wetter terrain. This was opposed to the primary routes to the south where travel was possible in most conditions, but also here including some very narrow critical stretches.
Indeed, as much as 18 chum sites were lost, as well as at least one sacred site. A Nenets sacred place had been physically made into a major sand/quarry pit. While the offering/praying site itself had been marked by wooden pegs in a circle of 6 m, the entire surrounding area had turned into an industrial excavation. From the point of view of the industrial workers, the sacred place was ‘preserved’, believing that this was limited to the actual offering/praying site; however, the herders felt that it was desecrated. Such sites are particularly sensitive, as there may be sacred hills, creeks or rocks far beyond that of an actual offering site. This is but one example of the very different perceptions of the landscape between the herders and modern society. The authors have noted many such similar examples in different parts of the world, including in North America and the Nordic countries, where traditional indigenous sacred sites used to offer gifts in gratitude for the land and its blessings - typically including an entire valley or calving ground - are merely regarded by modern society as a site-specific localized spot, which is limited to where the offering was placed near a rock, similar to the physical limitations of a church yard or church. Traditional landowner views amongst Europeans and westerners - or in most urbanized societies - are contrasted by the spiritual relationship between the herders and the land incorporating much greater areas and a perception based on user right - not land ownership - a concept among many traditional indigenous peoples which would be considered a sacrilege or impossible. Another factor is simply that the cognitive maps and understanding of the landscape may be very different between herders and the industrial planners (Istomin and Dwyer 2009). Increased dialogue here will be important (Stammler and Peskov 2008).
Reindeer husbandry in Yamal is still based on fully nomadic lives, as families of herders migrate by reindeer and sledges from one camp site to the next. This migration is neither random nor fully predetermined but is rather based on a holistic system of reindeer herding knowledge which incorporates a range of ecological, socio-economic and cultural considerations of the people in the landscape and implications for the well-being of the herders, envisioning the risks and opportunities from day to day (Istomin and Dwyer 2010; Behnke et al. 2011). Reindeer herders' mental modelling and perception of the landscape need to be better understood, although some aspects have been discussed elsewhere (Istomin and Dwyer 2010; Behnke et al. 2011).
The herders consider it crucial for the health of their reindeer to reach the coast of the Yamal peninsula after their long migration from the winter pastures in the south (Figure 2). Herders claim that reindeer change behaviour and become ‘more healthy’ even within days upon reaching the coast (Andrey Serotetto, Khasova Pujko and Olga Khudi, personal communication), where they graze on a variety of plants, particularly in the 5-km coastal zone. Coastal vegetation is usually abundant in salt and minerals and is known to influence quality of forage for both reindeer and geese (Staaland et al. 1983; Spaans and Postma 2001; Ngai and Jefferies 2004). Many coastal plants in the near-coastal zone of the Arctic have higher contents of many important minerals like phosphorous, magnesium, calcium and sodium, compared to inland forage plants like Carex aquatilis (Gadallah and Jefferies 1995; Ngai and Jefferies 2004). Animals require minerals as structural components of organs and tissues, as co-factors or activators in enzyme and hormone systems and as components in body fluids and tissues (Sharma et al. 2007). Re-supply of minerals to deficient animals may produce near-immediate responses in body vigour (Sharma et al. 2007). Access to coastal vegetation might therefore be crucial for reindeer also in Yamal.
Furthermore, the coast is also important for the reindeers' relief from insects during the mosquito and botfly (Oestridae) infestation periods from July to mid-August (Gerhart et al. 1996; Stammler 2005). Although reindeer in Yamal are managed and gathered during insect harassment, they cannot graze freely during the infestations, except during windy days or at the coast. Access to the coastal zone is therefore of major importance to both herders and reindeer alike, as the short period at the coast allows herders to rest and reindeer to graze without insect stress and subsequently restore body and fat reserves during summer (Gerhart et al. 1996). Hence, the turnaround at the coast provides an important part of the traditional way of herding, closely coinciding with the natural cycle and ecology of the reindeer (Stammler 2005; Dwyer and Istomin 2008).
The role of rugged terrain for forage quality and insect relief
Rugged terrain reflects a particularly rich resource for herders and reindeer alike. For reindeer and caribou, rugged terrain is characterized not only by greater forage biomass, which is a result of greater influx of sunlight on southerly exposed slopes, greater nutrient flows and micro-topographic diversity, hence enhanced conditions for plant growth (Nellemann and Thomsen 1994). Such terrain also provides greater variation in plant communities, snow melt, plant phenology and hence forage quality and diversity within short distances. Such terrain is used and selected extensively during calving in Canada and Norway (Nellemann and Cameron 1998, 1996; Vistnes and Nellemann 2001).
In Yamal peninsula, rugged terrain (Figure 4) also provides slight elevations making these areas more attractive as insect relief habitat, while smaller snow banks on the north side of very small bluffs make them attractive to reindeer for cooling and insect relief. This is also true for the flat areas in between, with permafrost coming as close to the surface as 15 to 20 cm in Yamal, providing cooling areas for reindeer in warm days. In the summer, the lower-lying rich nutritious pastures are used in the cool weather, while the dry elevated areas, preferably lichen-free and located close to the camp sites, are needed in hot weather during insect harassment, as the herd is running in circles as a protection. The herd may even approach human infrastructure in the search of insect relief (Skarin et al. 2004). Likewise in Yamal, herders may provide protection for the reindeer against insects by making smoke screens or spraying modern chemicals.
The pasture quality, as viewed by the reindeer herders, is therefore not simply measured by standing biomass, plant phenology or carrying capacity, but valuable pastures also provide a wide range of alternative range qualities in order for reindeer and herders to respond to different weather and social conditions - a variety typical of rugged terrain. The ‘good’ summer pastures provide enough water for the people and animals in the years of dry summers with low precipitation and also an opportunity for people to travel by sledges through the landscape during the unusual extremely rainy summers. The cluster of rugged terrain located northwest of the Bovanenkovo industrial complex is particularly valuable to both reindeer and herders alike due to the diversity of assets such as insect relief, availability of migration routes in different weather, camp sites and plant diversity.
All of these aspects of the slightly rugged terrain in an otherwise flat landscape are deeply appreciated by the herders and in their selection of stopping points along the migration, and when they move the herds around to graze from the camp sites.
The role of rugged terrain for migrations to the coast
In spite of the seemingly vast undeveloped landscape, virtually all parts of the Yamal peninsula are used for reindeer migrations. The migration routes illustrated here (Figures 2, 4 and 7) only represent a portion of those present, but nonetheless comprise a dense, closely delineated system of migration routes and an intrinsic advanced system of avoiding mixing with other herds while still finding terrain passable and suitable for migration. Indeed, as was evident in the extended as well as the core Bovanenkovo area, there were a highly limited number of suitable passages for herds of reindeer. While the area seemingly is vast, there are few corridors suitable for reindeer herders' migrations. The traditional nedermas - Nenets migration trails - connect and run through all of these patches of rugged terrain, enabling them to access camp sites with all their requirements, corral sites and good grazing areas on their way to the coast.
Indeed, pulling sledges with all camp equipment across the tundra in summer results in high friction on the ground. This is particularly difficult in dry weather and when the reindeer are weak following a long migration and winter; selection of less strenuous routes therefore becomes very important for both the herders and their reindeer.
The natural features of the local landscape are also considered and used by herders in their daily management. For instance, the rivers may also help as natural borders in managing the herd. Rugged terrain also provides a greater abundance of camp sites.
Use of rugged terrain for camp sites
The elevated sites so typical of rugged terrain (Figure 2) in an otherwise very flat landscape also provide a good focal point for herders moving the reindeer herd anything from a few hundred metres up to 6 km away, thus avoiding both trampling and overgrazing near chum sites. The drier ground is also very important as herders may have to corral or round up the herd up to several times and keep them close to camp. In low-lying terrain, erosion and trampling during corral activities would become a serious problem. Indeed, on the eastern part of the Yamal peninsula, some brigades have to migrate almost every day because chum sites would turn into mud and swamp after one or two corral activities.
Hence, the rugged terrain provides a range of opportunities enabling the herders to cope with changing conditions in weather, ranges or social issues by providing more resources and a greater diversity in range characteristics, alternative migration corridors, availability of camp sites, access to fire wood and much more within short horizontal distances. The rugged terrain - limited in extent on the coastal plain - provides a very important resource to the herders by improving the quality of life and facilitating herding practices.
Impacts and competition for land by industrial development
Additional file 2: Nenets migrations and crossing of river in Bovanenkovo industrial complex, Yamal, Russia. (WMV 13 MB)
Herders also called the area west and northwest of the Bovanenkovo field the ‘Green peninsula’, meaning that the particularly good pasture land could only be accessed through the migration passages but which might become bottlenecks due to industrial development, since the surrounding wet areas are too wet for access. Once again, these natural funnelling passages for migration are of major importance for the herders.
The islands of rugged terrain on the Yamal tundra are also valuable during autumn, where the ridges and bluffs provide lichens for the reindeer, and herders often try to limit grazing on these sites in spring so as to protect them for the autumn migration. In particular, the area allocated for BIC used to be very valuable for the herders of brigade X during early autumn grazing (end of August), as the elevated grounds provide abundance of lichens. These ridges are no longer accessible to any of the brigades or the private herders due to industrial infrastructure on the very same elevated terrain features (Nellemann and Cameron 1998, 1996).
In the near future the impact of BIC on the reindeer herders is projected to increase, as the development will intensify with more drilling pads, construction of connecting pipelines, the railway extended towards the gas field and port of Kharasavey, and the proposed port at Sabetta (Figure 2).
Our results ostensibly show that even apparently minor industrial development in a seemingly vast and generally flat landscape like the Yamal peninsula may directly affect the availability of critical migration passages in the landscape, creating bottlenecks for the nomadic herders. Furthermore, industrial development targets the same crucial rugged and elevated terrain that is so valuable to reindeer herders and their animals. The physical footprint of Bovanenkovo installations is small, but for the three herding units migrating through these bottlenecks, the industrial development resulted in blockage of two out of four possible routes, loss of major grazing areas and subsequent loss of access to at least 18 traditional camp sites and one sacred site along their traditional route. Herders and their livestock actively select and follow these patches of rugged and elevated terrain that are scattered across the landscape. Industrial development may subsequently directly interfere with the accessibility of such terrain during migration and the associated land use by Nenets herders and may even jeopardize entire migration systems or delay their timing by blocking traditionally used migration corridors. The industrial development also interferes with the herders' quality of life by not only impacting their migratory cycles, but also the resources available to them in the landscape. As climate change is also rapidly accelerating in the Arctic, continued industrial development will further compromise the ability of the herders to adapt. Indeed, an early break-up of rivers further south in the early stages of migration could either hinder or delay migrations and herders' ability to reach the coast in a timely fashion. Continued industrial development will threaten the cycles of herding even more and reduce the options available to herders, in spite of the will and knowledge of these people to adapt to changing conditions.
The project is a part of IPY EALAT-RESEARCH: Reindeer Herders Vulnerability Network Study: Reindeer pastoralism in a changing climate, supported by Research Council of Norway grant number 176078/S30. We would like to thank Nenets reindeer herders in Yamal-Nenets AO for sharing their knowledge and information about nomadic use of the Yamal landscape. Very special appreciation to Prof. Svein D. Mathiesen for support in the field work in Yamal. A thanks also to reindeer herders Nyadma Khudi, Nina Khudi and Khasova Pujko, Igor Slepushkin, Andrey Serotetto and Konstantin Oschepkov for their valuable assistance. Special thanks also to the local people in the villages of Yar-Sale and Seyakha and in the city of Salekhard for sharing knowledge and hosting researchers. Dr. Nancy Maynard and Mr. Alvaro Ivanoff at NASA Goddard Space Flight Centre, Washington DC, USA are acknowledged for providing the LANDSAT images from July 1987 to 2009 from the research area of Yamal. A special thanks also to Riccardo Pravettoni at UNEP GRID Arendal for unique assistance with graphics. Thank you also to Professor Konstantin Klokov, St. Petersburg State University for assistance and support. We also thank Philip Burgess for making comments on an early draft version of the article. Photos were taken by Anna Degteva and Svein D. Mathiesen. Videos courtesy of Mathiesen and edits by P. Burgess.
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