Indonesian Borneo Research Articles

<i>Corrigendum to</i>: Spatial correlates of forest and land fires in Indonesia

Biomass fires in Indonesia emit high levels of greenhouse gases and particulate matter, key contributors to global climate change and poor air quality in south-east Asia. In order to better understand the drivers of biomass fires across Indonesia over multiple years, we examined the distribution and probability of fires in Sumatra, Kalimantan (Indonesian Borneo) and Papua (western New Guinea) over four entire calendar years (2002, 2005, 2011 and 2015). The 4 years of data represent years with El Niño and La Niña conditions and high levels of data availability in the study region. Generalised linear mixed-effects models and zero-inflated negative binomial models were used to relate fire hotspots and a range of spatial predictor data. Geographic differences in occurrences of fire hotspots were evident. Fire probability was greatest in mixed-production agriculture lands and in deeper, degraded peatlands, suggesting anthropogenic activities were strong determinants of burning. Drought conditions in El Niño years were also significant. The results demonstrate the importance of prioritising areas of high fire probability, based on land use and other predisposing conditions, in effective fire management planning.

Male residency of Sunda Clouded Leopard Neofelis diardi (Cuvier, 1823) (Mammalia: Carnivora: Felidae) in a peat swamp forest, Indonesian Borneo

The Sunda Clouded Leopard Neofelis diardi is the apex predator on the island of Borneo, yet little is known of its ecology. We document the length of residency of male Sunda Clouded Leopards in Central Kalimantan, Indonesian Borneo. Over 10 years, camera trap data have been obtained in the Sebangau peat swamp forest in a study area of ~ 105km2. We identified 11 individuals (eight males, one female, and two with unknown sex), from 152 notionally independent photographs. On average, males remained in the study area for 39.3 months (SE 8.3), or 3.3 years (SE 0.7), ranging from less than a month of residency up to 71 months. Females were infrequently recorded, possibly as a result of human disturbance and/or high male densities. Our results reveal that even a 10-year dataset is inadequate to answer some basic ecological questions, emphasising the importance of long-term monitoring of this species.

Equifinality in the Smallholder Slot: Cash Crop Development in the Brazilian Amazon and Indonesian Borneo

This article presents a comparative ethnography of the smallholder agroforestry projects of an international environmental organization. Migrant ranchers in Brazil sell cattle from private properties in a heavily-deforested landscape. Indigenous farmers in Indonesia rely on subsistence food production on customary lands in a heavily-forested landscape. Despite these differences, the projects identify both migrant ranchers and indigenous farmers as “smallholders” and prescribe cash crop agroforestry as the solution to both their predicaments. In the face of expanding ranches and plantations, this cash crop solution accepts the destruction of forest ecosystems and livelihoods as inevitable, funneling smallholders into market agroforestry in agro-industrial landscapes. This article strengthens the case for comparative ethnography and challenges discursive conflations and political-economic biases of prevailing sustainable development policies.

Perceptions of Change: Adopting the Concept of Livelihood Styles for a More Inclusive Approach to ‘Building with Nature’

The world’s wetlands are threatened by deforestation, fires, agriculture, mining, overfishing, and human settlement. While policymakers strive for comprehensive technical solutions, sustainable solutions also require the active engagement of the people affected. To mobilize local human action, it is not enough to investigate the facts and figures of the biophysical natural landscape: we also need a better understanding of how local people perceive these changes. In this article, we adopt the concept of livelihood styles to explain the ways in which people construe a perspective of their aquatic environment with which they continuously, and according to a certain pattern, interact to make a living. Our study is based on a mixed-method study with data collected between 2005 and 2015 in the Mahakam Wetlands of Indonesian Borneo (Kalimantan). We found five distinct livelihood styles: investors, boatmen, breeders, traditional fishermen, and “indolent” fishermen, that each possess characteristics related to fishing practices, and found significant differences in their perceptions of water quality changes. As such, we demonstrate that perceptions and patterns of practice are interdependently related. Understanding perceptions through a livelihood styles approach provides an opening for policymakers to build with local people and nature towards a sustainable environment, both in Indonesia and beyond.

Spirits out of place: relational landscapes and environmental change in East Kalimantan, Indonesia

AbstractThis article examines interaction with spirits among the Luangan, a group of shifting cultivators in Indonesian Borneo. Through examples of different forms of Luangan spirit interaction, it interrogates the relationship between the spirit world and the natural environment, with special reference to what happens when the latter undergoes dramatic change. Inspired by Eduardo Kohn's understanding of how the spirit world is semiotically embedded within the rainforest environment, I explore how relations with nonhumans reflect historical and ongoing experiences of life and sociality in the forest and human domain, while superimposing a virtual relational landscape upon the natural landscape. It is proposed that spirit communication offers a means of refiguring human lives and alleviating debilitation, and that recurrent rituals enable Luangans to virtually maintain relations with unseen beings of the local environment, even where it has been thoroughly transformed through oil palm cultivation.

Contested values and climate change mitigation in Central Kalimantan, Indonesia

Contested values and climate change mitigation in Central Kalimantan, Indonesia

Deforestation spillovers from oil palm sustainability certification

Environmental policies that impose restrictions within one location may be undermined or reinforced by ‘spillover effects,’ the movement of actors, processes, or knowledge to other locations. Such spillovers are an important consideration in the design of interventions seeking to reduce commodity driven deforestation. In these settings, global markets and mobile actors can move deforestation and conservation behaviors over large distances, complicating efforts to measure and manage spillovers. Here we quantify forest loss and conservation spillovers from the Roundtable on Sustainable Palm Oil (RSPO) certification system in Indonesian Borneo (Kalimantan). We examine whether spillovers from certification are transmitted through corporate groups (i.e. to non-certified, RSPO member-held plantations) or local agricultural markets (i.e. to lands near certified mills). We find that, from 2009 to 2016, spillovers from RSPO certification reduced deforestation within Indonesia’s forest estate, but increased deforestation in areas zoned for agricultural use. The private RSPO certification system has complemented public conservation by aligning de facto land cover with central government land zoning policy. Despite these benefits, aggregate avoided deforestation attributed to direct and spillover effects was statistically and substantively insignificant when compared to the total deforestation occurring inside all of Kalimantan’s oil palm concessions. While certification has reduced illegal deforestation, stronger sector-wide action appears necessary to ensure that oil palm production is no longer a driver of forest loss.

<p><strong><em>Dendrobium rubrostriatum</em></strong><strong>, A New Species of <em>Dendrobium</em> section <em>Aporum</em> from West Kalimantan, Indonesian Borneo</strong></p>

Dendrobium rubrostriatum (section Aporum) is described and illustrated from West Kalimantan, Indonesian Borneo. It is morphologically close to Dendrobium lobulatum, but differs in having strongly reflexed petals and dorsal sepal, linear-acute petals, a different shape lateral sepals, a mentum which is only 1.5 times longer than the column, lip that has a straight claw lacking an abrupt bend near the base, a different shape of lobules of mid-lobe, and the disc that has a glabrous callus that in the natural position considerably exceeds the column.

Beyond the community in participatory forest management: A governance network perspective

Governance of the environment and natural resources involves interests of multiple stakeholders at different scales. In community-based forest management, organisations outside of communities play important roles in achieving multiple social and ecological objectives. How and when these organisations play a role in the community-based forest management process remains a key question. We applied social network analysis to a case study in Indonesian Borneo to better understand the evolution of interactions between organisational actors, and with communities. NGOs featured most prominently in initiating the permit process, implementing management, and providing other support activities, while also being well-connected to donors and government actors. The network configurations indicated significant cooperation among organisations when initiating the community forest process, while bridging between village and organisational levels characterised all stages of the community forest process. While community-based forest management often evokes images of grassroots efforts and broad local capacity to manage forests, reality shows a more dynamic and heterogeneous picture and broader involvement of different actor types and motivations in Indonesia. These findings can be applied to other countries implementing and expanding their decentralised forest policies.

El Niño driven haze over the Southern Malaysian Peninsula and Borneo

The Southeast Asian (SEA) region is no stranger to forest fires - the region has been suffering from severe air pollution (known locally as ‘haze’) as a result of these fires, for decades. The fires in SEA region are caused by a combination of natural (the El Niño weather pattern) and manmade (slash-and-burn and land clearing for plantations) factors. These fires cause the emissions of toxic aerosols and pollutants that can affect millions of people in the region. Thus, this study aims to identify the impact of the SEA haze on the Southern region of the Malaysian Peninsula and Borneo region of East Malaysia using the entire air quality observation data at surface level in 2015. Overall, the concentration of PM10 was about two-fold higher during the haze period compared to non-haze period. The concentrations of CO, flux of CO and flux of BC were aligned with PM10 during the entire observation period. The wind field and cluster of trajectory indicated that the Southern Malaysian Peninsula and Borneo were influenced mainly from the wildfires and the combustion of peat soil in the Indonesian Borneo. This study finds that wildfires from Borneo impacted the Southern Malaysian Borneo more seriously than that from Sumatra region.

Reducing Illegal Logging through a Chainsaw Buyback and Entrepreneurship Program at Gunung Palung National Park

Gunung Palung National Park in Indonesian Borneo, home to 2,500 Bornean orangutans (Pongo pygmaeus ssp. wurmbii), suffers from severe deforestation that is caused by illegal logging. This article aims to analyze the success of an innovative entrepreneurship program in reducing illegal logging in Gunung Palung National Park. This program combines voluntary chainsaw buybacks with capital investment for former loggers to launch a business of their choice. To analyze the success of this entrepreneurship program, we measured two parameters: (1) transitions of former loggers to sustainable alternative livelihoods and (2) reductions in the number of loggers who log actively inside the park. The average monthly income for participating business partners was 2,923,333 rupiah or $209 USD for new partners who had participated for less than one year and 3,357,778 rupiah or $240 for established partners who had participated for more than one year. This income is about the minimum wage for the local area. The failure rate of the program—defined as the partners that returned to logging—was only 6%, or 3 out of 50 partners. Successful forest conservation, however, requires addressing additional factors beyond reducing the access to logging equipment.

From canals to the coast: dissolved organic matter and trace metal composition in rivers draining degraded tropical peatlands in Indonesia

Abstract. Worldwide, peatlands are important sources of dissolved organic matter (DOM) and trace metals (TMs) to surface waters, and these fluxes may increase with peatland degradation. In Southeast Asia, tropical peatlands are being rapidly deforested and drained. The blackwater rivers draining these peatland areas have high concentrations of DOM and the potential to be hotspots for CO2 release. However, the fate of this fluvial carbon export is uncertain, and its role as a trace metal carrier has never been investigated. This work aims to address these gaps in our understanding of tropical peatland DOM and associated elements in the context of degraded tropical peatlands in Indonesian Borneo. We quantified dissolved organic carbon and trace metal concentrations in the dissolved and fine colloidal (<0.22 µm) and coarse colloidal (0.22–2.7 µm) fractions and determined the characteristics (δ13C, absorbance, fluorescence: excitation-emission matrix and parallel factor – PARAFAC – analysis) of the peatland-derived DOM as it drains from peatland canals, flows along the Ambawang River (blackwater river) and eventually mixes with the Kapuas Kecil River (whitewater river) before meeting the ocean near the city of Pontianak in West Kalimantan, Indonesia. We observe downstream shifts in indicators of in-stream processing. An increase in the δ13C of dissolved organic carbon (DOC), along with an increase in the C1∕C2 ratio of PARAFAC fluorophores, and a decrease in SUVA (specific UV absorbance) along the continuum suggest the predominance of photo-oxidation. However, very low dissolved oxygen concentrations also suggest that oxygen is quickly consumed by microbial degradation of DOM in the shallow layers of water. Blackwater rivers draining degraded peatlands show significantly higher concentrations of Al, Fe, Pb, As, Ni and Cd compared to the whitewater river. A strong association is observed between DOM, Fe, As, Cd and Zn in the dissolved and fine colloid fraction, while Al is associated with Pb and Ni and present in a higher proportion in the coarse colloidal fraction. We additionally measured the isotopic composition of lead released from degraded tropical peatlands for the first time and show that Pb originates from anthropogenic atmospheric deposition. Degraded tropical peatlands are important sources of DOM and trace metals to rivers and a secondary source of atmospherically deposited contaminants.

‘Only Gold can Become Hope’: Resource Rushes and Risky Conviviality in Indonesian Borneo

ABSTRACT This paper intervenes in recent works that have put hope and affect at the heart of their analysis to study development dynamics, particularly the exploitation of mineral resources. Framing hope as a modality of connecting with the world, I explore how villagers affected by a gold rush in Indonesian Borneo constantly refined and reworked their hope in dialogue with human and non-human others to create an affective, corporeal, yet highly risky state of conviviality. Guided by my ethnography, I develop the concept of risky conviviality to capture the contradictions involved in people’s engagements with the promises and pitfalls of capitalist developments and foreground the affective, interpersonal aspect of these developments as ends in themselves. By revealing the affective, embodied nature of hope’s end-point and the profoundly relational character of both hope and its end-point, risky conviviality expands anthropological understandings of what hope entails in people’s engagements with capitalist endeavours.

Emerging challenges for sustainable development and forest conservation in Sarawak, Borneo.

The forests of Borneo—the third largest island on the planet—sustain some of the highest biodiversity and carbon storage in the world. The forests also provide vital ecosystem services and livelihood support for millions of people in the region, including many indigenous communities. The Pan-Borneo Highway and several hydroelectric dams are planned or already under construction in Sarawak, a Malaysian state comprising part of the Borneo. This development seeks to enhance economic growth and regional connectivity, support community access to services, and promote industrial development. However, the implications of the development of highway and dams for forest integrity, biodiversity and ecosystem services remained largely unreported. We assessed these development projects using fine-scale biophysical and environmental data and found several environmental and socioeconomic risks associated with the projects. The highway and hydroelectric dam projects will impact 32 protected areas including numerous key habitats of threatened species such as the proboscis monkey (Nasalis larvatus), Sarawak surili (Presbytis chrysomelas), Bornean orangutans (Pongo pygmaeus) and tufted ground squirrel (Rheithrosciurus macrotis). Under its slated development trajectory, the local and trans-national forest connectivity between Malaysian Borneo and Indonesian Borneo would also be substantially diminished. Nearly ~161 km of the Pan-Borneo Highway in Sarawak will traverse forested landscapes and ~55 km will traverse carbon-rich peatlands. The 13 hydroelectric dam projects will collectively impact ~1.7 million ha of forest in Sarawak. The consequences of planned highway and hydroelectric dams construction will increase the carbon footprint of development in the region. Moreover, many new road segments and hydroelectric dams would be built on steep slopes in high-rainfall zones and forested areas, increasing both construction and ongoing maintenance costs. The projects would also alter livelihood activities of downstream communities, risking their long-term sustainability. Overall, our findings identify major economic, social and environmental risks for several planned road segments in Sarawak—such as those between Telok Melano and Kuching; Sibu and Bintulu; and in the Lambir, Limbang and Lawas regions—and dam projects—such as Tutoh, Limbang, Lawas, Baram, Linau, Ulu Air and Baleh dams. Such projects need to be reviewed to ensure they reflect Borneo’s unique environmental and forest ecosystem values, the aspirations of local communities and long-term sustainability of the projects rather than being assessed solely on their short-term economic returns.

Automated Plantation Mapping in Southeast Asia Using MODIS Data and Imperfect Visual Annotations

Expansion of large-scale tree plantations for commodity crop and timber production is a leading cause of tropical deforestation. While automated detection of plantations across large spatial scales and with high temporal resolution is critical to inform policies to reduce deforestation, such mapping is technically challenging. Thus, most available plantation maps rely on visual inspection of imagery, and many of them are limited to small areas for specific years. Here, we present an automated approach, which we call Plantation Analysis by Learning from Multiple Classes (PALM), for mapping plantations on an annual basis using satellite remote sensing data. Due to the heterogeneity of land cover classes, PALM utilizes ensemble learning to simultaneously incorporate training samples from multiple land cover classes over different years. After the ensemble learning, we further improve the performance by post-processing using a Hidden Markov Model. We implement the proposed automated approach using MODIS data in Sumatra and Indonesian Borneo (Kalimantan). To validate the classification, we compare plantations detected using our approach with existing datasets developed through visual interpretation. Based on random sampling and comparison with high-resolution images, the user’s accuracy and producer’s accuracy of our generated map are around 85% and 80% in our study region.

Spatial correlates of forest and land fires in Indonesia

Biomass fires in Indonesia emit high levels of greenhouse gases and particulate matter, key contributors to global climate change and poor air quality in south-east Asia. In order to better understand the drivers of biomass fires across Indonesia over multiple years, we examined the distribution and probability of fires in Sumatra, Kalimantan (Indonesian Borneo) and Papua (western New Guinea) over four entire calendar years (2002, 2005, 2011 and 2015). The 4 years of data represent years with El Niño and La Niña conditions and high levels of data availability in the study region. Generalised linear mixed-effects models and zero-inflated negative binomial models were used to relate fire hotspots and a range of spatial predictor data. Geographic differences in occurrences of fire hotspots were evident. Fire probability was greatest in mixed-production agriculture lands and in deeper, degraded peatlands, suggesting anthropogenic activities were strong determinants of burning. Drought conditions in El Niño years were also significant. The results demonstrate the importance of prioritising areas of high fire probability, based on land use and other predisposing conditions, in effective fire management planning.

First inland record of bull shark Carcharhinus leucas (Carcharhiniformes: Carcharhinidae) in Indonesian Borneo

An individual of bull shark Carcharhinus leucas (Müller & Henle, 1839) with c. 600-700 mm of total length was caught and photographed on 2019 in Barito River, South Kalimantan province, Indonesia. This finding is considered as a first inland record of C. leucas in Indonesian Borneo (Kalimantan). Collecting data using citizen science is needed to asses the occurence of C. leucas and evaluate the importance of riparian system in Kalimantan waters as nursery area or ranging habitat for this species.

Using soundscapes to investigate homogenization of tropical forest diversity in selectively logged forests

Abstract Selective logging in tropical forests changes the local number of animal species (alpha diversity), but it also likely affects species turnover (beta diversity). Whilst such changes are documented in many ecosystems under different disturbances, they are poorly understood in selectively logged tropical forests. By using soundscape recordings across broad spatial scales, we measured soundscape saturation and dissimilarity of pairs of soundscapes, as a proxy of alpha and beta diversity, respectively, in selectively logged and protected tropical forest in Indonesian Borneo. Soundscapes of selectively logged forests were more homogeneous than the soundscapes of never logged forest, and that soundscape saturation of protected forest was higher during the day and lower at night in comparison with selective logging concessions. Synthesis and applications. Selectively logged forests act as an important reservoir of biodiversity. Optimizing such production forests for biodiversity conservation requires the consideration of the total continuous area that is assigned to selective logging, and spatial arrangement of annual cutting blocks, as these could affect beta diversity and its recovery.

Cost-benefit based prioritisation of orangutan conservation actions in Indonesian Borneo

Each year an estimated US$20–30 million is spent by government and non-government organisations in efforts to conserve the Bornean orangutan. However, recent population analysis reveals that these efforts have been unable to reduce species decline. A major aim of the Indonesian National Action Plan for orangutan conservation is to “improve in-situ conservation as the principal activity ensuring the orangutan's survival in its native habitats”. This paper summarises and examines current investment in conservation activities and provides recommendations on the strategic allocation of funds for future conservation. The cost data of major conservation initiatives, including orangutan rescue and rehabilitation, habitat protection, habitat restoration and community education, was collated from non-government agency annual reports and primary literature. A recent population density and distribution model, and reports documenting the effectiveness of conservation strategies for the species were then used to calculate population trends in the presence and absence of interventions. Using an open-access cost-effectiveness resource allocator tool, we investigate expenditure and program performance. We then provide recommendations on how to strategically allocate conservation funding to future programs to ensure maximum effectiveness.

Certification, good agricultural practice and smallholder heterogeneity: Differentiated pathways for resolving compliance gaps in the Indonesian oil palm sector

Enhancing smallholder compliance with sustainability standards and good agricultural practices features prominently on the global sustainability agenda. Operating in a sector that bears intense public scrutiny, Indonesia’s oil palm smallholders are especially confronted by pressures to enhance their environmental performance. Because smallholders experience differentiated compliance barriers however, it is widely recognized that for the purpose of more effectively prioritizing and targeting the necessary intervention support, smallholder heterogeneity needs to be better understood. This is especially the case for independent – in contrast to ‘plasma’ - oil palm smallholders, for whom corporate technical, input and financial support is comparatively inaccessible. Through multivariate analysis, this article contributes to these needs by developing a typology of independent oil palm smallholders in Indonesian Borneo. We subsequently model the predicted probabilities of different types of smallholders complying with Indonesia’s major national sustainability standard and select indicators of good agricultural practice. This analysis reveals structural compliance gaps, which threatens to restrict smallholder access to formal markets in future. In showing that intervention strategies to resolve these compliance gaps can be more impactful when these are adapted to smallholder livelihood assets, portfolios and strategies, this article points to the importance of more explicitly accounting for socio-economic differentiation when addressing contemporary smallholder upgrading challenges. With results however revealing how local entrepreneurs and elites complicit in regulatory evasion and illegal land encroachments play a significant role in the sub-sector, local political resistance to initiatives that aim to bring the sub-sector above board can be anticipated. This highlights how institutional building needs to be more explicitly incorporated into the design of smallholder-centric intervention strategies; through, for example, the adoption of more integrative landscape-level planning approaches.