Covering approximately 10,000 km² the Sundarbans in the Northern Bay of Bengal is the largest contiguous mangrove forest on earth. Mangroves forests are highly productive and diverse ecosystems, providing a wide range of direct ecosystem services for resident populations. In addition, mangroves function as a buffer against frequently occurring cyclones; helping to protect local settlements including the two most populous cities of the world, Kolkata and Dhaka, against their worst effects. While large tracts of the Indian Sundarbans were cleared, drained and reclaimed for cultivation during the British colonial era, the remaining parts have been under various protection regimes since the 1970s, primarily to protect the remaining population of Bengal tigers (Panthera tigris ssp. tigris). In view of the importance of such forests, now severely threatened worldwide, we trace the areal change that the Indian Sundarbans have undergone over the last two-and-a-half centuries. We apply a multi-temporal and multi-scale approach based on historical maps and remote sensing data to detect changes in mangrove cover. While the mangroves’ areal extent has not changed much in the recent past, forest health and structure have. These changes result from direct human interference, upstream development, extreme weather events and the slow onset of climate change effects. Moreover, we consider the role of different management strategies affecting mangrove conservation and their intersection with local livelihoods.

Climatic differences between monsoonal and cold-arid parts of the South Asian mountain arc account for the uncertainty regarding regional variations in glacier retreat. In this context, the upper Indus Basin of Ladakh, sandwiched between the Himalayan and Karakoram ranges, is of particular interest. The aims of the present study are threefold: to map the glaciers of central and eastern Ladakh, to describe their regional distribution and characteristics in relation to size and topography, and to analyze glacier changes in the selected ranges over the past five decades. The study is based on multi-temporal remote sensing data (Corona and Landsat), supported and validated by several field campaigns carried out between 2007 and 2016. A glacier inventory was carried out for the complete study area, which was subdivided into nine sub-regions for comparison. In general, the glaciers of Ladakh are characterized by their high altitude, as 91% terminate above 5200 m, and by their relatively small size, as 79% of them are smaller than 0.75 km² and only 4% are larger than 2 km². The glaciated area of central Ladakh totaled 997 km² with more than 1800 glaciers in 2002.

There is a growing recognition of the contribution of the cryosphere to human societies. This is especially important in the Hindu Kush Himalaya (HKH), where poverty and vulnerability are high and climate change impacts on the cryosphere are strong. However, there is a lack of synthesized knowledge about the contributions of the cryosphere to high mountain communities. This paper uses a cryosphere service framework—a derivative of the ecosystem service concept—to classify different goods and services provided by the cryosphere. Case studies were selected using an adapted systematic review methodology. These studies were then synthesized and examined through the lens of critical political ecology. The review shows that while the cryosphere provides a whole range of goods and services for mountain communities, not all of these are well documented. Material services like the supply of water for irrigation and agriculture, and disservices such as disasters, are better documented than non-material services like the spirituality of landscapes. The majority of the case studies do not use an interdisciplinary lens. While some studies on irrigation discuss the physical basis and human organization of irrigation, the literature on disasters mostly focuses on the physical processes and at most generalized loss and damage assessments. Further, most case studies do not use the critical epistemologies needed to examine how politics, power, and intersectionality influence societal responses to changes in the cryosphere. The paper suggests that future studies adopt interdisciplinary collaboration to understand human impacts and adaptive responses through critical political ecology frameworks.