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In a time of increasing land enclosures sparked by large-scale environmental initiatives and agricultural expansion, this paper examines local and global contestations over the value of forest on an Indonesian forest frontier. Engaging with recent debates on carbon forestry, the paper problematises the emerging initiatives of ' Reducing Emissions from Deforestation and Forest Degradation' known as REDD+ in the province of West Kalimantan, Indonesia. The paper argues that the general rush to implement REDD+ without intimate knowledge of the political landscape of resource struggle is in danger of generating new enclosures of land that may be easily appropriated by local elites, thus excluding less fortunate sections of local society. The paper shows how divergent interpretations of REDD+ are triggering land disputes, and how powerful actors readily appropriate REDD+ discourses as a tool to support divergent claims of land ownership. Government and villagers, through overlapping and contradictory engagements, negotiate REDD+ initiatives with global environmental actors and private plantation companies. The paper highlights the implications of these local realities for the successes of REDD+. The Kalimantan case highlights some of the dilemmas of carbon mitigation initiatives experienced in frontier regions throughout Southeast Asia, places that have become prime battlefronts of large-scale climate change initiatives and agrarian expansion. [ABSTRACT FROM AUTHOR]

Aim: Our aim was to collect sightings data on oceanic manta rays (Mobula birostris) within the Raja Ampat Archipelago to better understand their population dynamics within the region. These data were compared with environmental variables to seek correlates that may explain any variations in observed sightings frequency. Combined, it is hoped this knowledge will be used to aid effective management of this species in the region. Location: Raja Ampat Archipelago, West Papua, Indonesia. Methods: We collected and catalogued photo‐identification of individuals to create a sightings database. To generate estimates of abundance, survival, sighting probability and recruitment to the population, we used a POPAN mark–recapture model. We considered time‐varying and fixed values for each parameter and possible covariate relationships of the El Niño–Southern Oscillation (ENSO) and sex. Results: A total of 588 individuals were identified over six years, of which 72.4% were female, and 28.2% of individuals were resighted. There was an exponential increase in sightings during the 2015–2016 ENSO event despite constant effort; significant correlation was found between sightings and the multivariate ENSO index and with sea surface temperatures but not with chlorophyll‐a. Mark–recapture analysis shows a clear relationship between ENSO and entry probability, and the most parsimonious model estimated a superpopulation size N of 1875 individuals. Main conclusion: Oceanic manta ray distributions appear to be impacted by ENSO‐related climate phenomena. Our findings on the relationship of ENSO to manta sightings and distribution indicate that oceanic manta rays are likely sensitive to large‐scale climatic variability. This illustrates the potential impacts of climate change on oceanic manta populations and the need to consider climate impacts in developing management strategies. Continued photo‐ID, tagging and population genetics would greatly enhance knowledge and help develop management strategies that bolster conservation of the species. [ABSTRACT FROM AUTHOR]

The future for Reducing Emissions from Deforestation and Forest Degradation Plus ( REDD+) in Papua New Guinea ( PNG) is uncertain. Logging companies have been accessing land via a controversial legal framework called Special Agricultural Business Lease, while conservation non-government organisations are struggling to find schemes to stop the deforestation. REDD+ has been the new favoured approach. However, there are as yet only a few pilot projects, several of which are in areas without large-scale logging. Whether REDD+ has a future in PNG is difficult to know. It may come to share the fate of the portable sawmill - a technology previously assumed to promote sustainable community logging, but is now adopted by the commercial logging industry and providing new challenges to conversation efforts. This article argues that to understand the possibility for successfully implementing REDD+, it is necessary to look at the development of the forestry sector in the widest possible terms. This involves analysing the different competing actors, technologies and forms of social organisation that are employed to gain control of species deemed valuable to either conservation or commercial resource exploitation. [ABSTRACT FROM AUTHOR]

Blue carbon ecosystems are key for successful global climate change mitigation; however, they are one of the most threatened ecosystems on Earth. Thus, this study mapped the climatic and human pressures on the blue carbon ecosystems in Indonesia using multi-source spatial datasets. Data on moderate resolution imaging spectroradiometer (MODIS) ocean color standard mapped images, VIIRS (visible, infrared imaging radiometer suite) boat detection (VBD), global artificial impervious area (GAIA), MODIS surface reflectance (MOD09GA), MODIS land surface temperature (MOD11A2), and MODIS vegetation indices (MOD13A2) were combined using remote sensing and spatial analysis techniques to identify potential stresses. La Niña and El Niño phenomena caused sea surface temperature deviations to reach −0.5 to +1.2 °C. In contrast, chlorophyll-a deviations reached 22,121 to +0.5 mg m−3. Regarding fishing activities, most areas were under exploitation and relatively sustained. Concerning land activities, mangrove deforestation occurred in 560.69 km2 of the area during 2007–2016, as confirmed by a decrease of 84.9% in risk-screening environmental indicators. Overall, the potential pressures on Indonesia's blue carbon ecosystems are varied geographically. The framework of this study can be efficiently adopted to support coastal and small islands zonation planning, conservation prioritization, and marine fisheries enhancement. [ABSTRACT FROM AUTHOR]