Understanding the Politics and Governance of Climate Change Loss and Damage

This introduction to the 2023 special issue of Global Environment Politics brings questions related to politics and political processes to the forefront in the study of climate change loss and damage. The aim of avoiding the detrimental impacts of climate change has been at the heart of the international response to global climate change for more than thirty years. Yet the development of global governance responses to climate change loss and damage—those impacts that we cannot, do not or choose not to prevent or adapt to—has only over the last decade become a central theme within the discussions under the United Nations Framework Convention on Climate Change (UNFCCC). Loss and damage has also become a research topic of growing importance within an array of disciplines, from international law to the interdisciplinary environmental social sciences. However, the engagement of scholars working in the fields of political science and international relations has been more limited so far. This is surprising because questions about how to best respond to loss and damage are fundamentally political, as they derive from deliberative processes, invoke value judgments, imply contestation, demand the development of policies, and result in distributional outcomes. In this introduction we describe the context and contributions of the research articles in the special issue. By drawing on a wide range of perspectives from across the social sciences, the articles render visible the multifaceted politics of climate change loss and damage and help to account for the trajectory of governance processes

Feeding island dreams: exploring the relationship between food security and agritourism in the Caribbean

Caribbean islands have increasingly turned to tourism as a pathway for economic advancement, often to the detriment of other industries, particularly agriculture. The influx of millions of tourists to these island destinations increases food demand, escalates food importation, and oftentimes results in food insecurity. Agritourism, an alternative tourism form, has been proposed as a way to stimulate domestic food production and increase food security. This article provides a selective examination of the possibilities of relationships between agritourism and food security in the context of a specific Caribbean island: New Providence, Bahamas. Drawing from semi-structured interviews and site visits with over sixty farmers, we focus on the experiences of three farms that have attempted to engage in agritourism, with different approaches, levels of success, and potential impacts on food security. We find that the potential for agritourism to transform food security for Caribbean islands is constrained by demand and the consumption standards of both residents and tourists. The type of agritourism that has thus far proven to be most appealing to tourists is unachievable for the majority of farmers, has inconsequential contributions to island food security, and privileges wealthy farmers. Unfortunately, in its current form, agritourism is not yet a viable solution for the food security issues of New Providence, let alone other Caribbean islands

Interacting adaptation constraints in the Caribbean highlight the importance of sustained adaptation finance

Adaptation to ever intensifying climate change is of paramount importance to reduce its impacts, in particular for those at the frontlines of climate change such as the Caribbean Small Island Developing States (SIDS). However, a range of constraints make it harder to plan and implement adaptation and thus hinder adaptation progress. Here, we provide an assessment on regional perceptions of adaptation constraints and avenues to overcome them based on a mixed-method approach, combining an online survey and semi-structured interviews with adaptation experts from Caribbean SIDS. We find that finance is the largest constraint being faced which closely interacts with information, human capacity and governance constraints throughout the entire adaptation process. Such interacting constraints can lead to vicious cycles profoundly hindering adaptation and therefore need to be addressed in parallel. Our results highlight how adaptation actors at the national level, in particular national governments, have a key role to play when overcoming constraints for the implementation of adaptation projects at the local level, alongside regional and international organisations.Peer Reviewe

Policies and mechanisms to address climate-induced migration and displacement in Pacific and Caribbean small island developing states

Purpose – This study aims to assess policies and mechanisms in Caribbean and Pacific small island developing states (SIDS) that address climate-induced migration and displacement. The migration of communities away from vulnerable regions is highly likely to be an adaptation strategy used in low-elevation SIDS, as the impacts of climate change are likely to result in significant loss and damage, threatening their very territorial existence. SIDS must ensure that residents relocate to less vulnerable locations and may need to consider international movement of residents. Ad hoc approaches to migration and displacement may result in increased vulnerability of residents, making the development and enforcement of comprehensive national policies that address these issues a necessity. Design/methodology/approach – Interviews with United Nations Framework Convention on Climate Change (UNFCCC) negotiators for SIDS as well as analysis of secondary data, including Intended Nationally Determined Contributions, are utilized to determine policies and mechanisms in place that focus on climate-induced migration and displacement. Findings – While climate change is acknowledged as an existential threat, few SIDS have policies or mechanisms in place to guide climate-induced migration and displacement. Potential exists for migration and displacement to be included in policies that integrate disaster risk reduction and climate change adaptation along with national sustainable development plans. Regional bodies are beneficial to providing guidance to SIDS in the development of nationally appropriate frameworks to address climate-induced migration and displacement. Originality/value – Existing gaps in policies and mechanisms and challenges faced by SIDS in developing strategies to address climate-induced migration and displacement are explored. Best practices and recommendations for strategies for SIDS to address migration and displacement are provided

Adaptation constraints in scenarios of socio-economic development

The article processing charge was funded by the Open Access Publication Fund of Humboldt-Universität zu Berlin.Climate change adaptation is paramount, but increasing evidence suggests that adaptation action is subject to a range of constraints. For a realistic assessment of future adaptation prospects, it is crucial to understand the timescales needed to overcome these constraints. Here, we combine data on documented adaptation from the Global Adaptation Mapping Initiative with national macro indicators and assess future changes in adaptation constraints alongside the Shared Socioeconomic Pathways, spanning a wide range of future socio-economic development scenarios. We find that even in the most optimistic scenario, it will take until well after 2050 to overcome key constraints, which will limit adaptation for decades to come particularly in vulnerable countries. The persistence of adaptation constraints calls for stringent mitigation, improved adaptation along with dedicated finance and increasing efforts to address loss and damage. Our approach allows to ground truth indicators that can be further used in climate modelling efforts, improving the representation of adaptation and its risk reduction potential.Peer Reviewe

Global Evidence of Constraints and Limits to Human Adaptation

Constraints and limits to adaptation are critical to understanding the extent to which human and natural systems can successfully adapt to climate change. We conduct a systematic review of 1,682 academic studies on human adaptation responses to identify patterns in constraints and limits to adaptation for different regions, sectors, hazards, adaptation response types, and actors. Using definitions of constraints and limits provided by the Intergovernmental Panel on Climate Change (IPCC), we find that most literature identifies constraints to adaptation but that there is limited literature focused on limits to adaptation. Central and South America and Small Islands generally report greater constraints and both hard and soft limits to adaptation. Technological, infrastructural, and ecosystem-based adaptation suggest more evidence of constraints and hard limits than other types of responses. Individuals and households face economic and socio-cultural constraints which also inhibit behavioral adaptation responses and may lead to limits. Finance, governance, institutional, and policy constraints are most prevalent globally. These findings provide early signposts for boundaries of human adaptation and are of high relevance for guiding proactive adaptation financing and governance from local to global scales

Zeb1 modulates hematopoietic stem cell fates required for suppressing acute myeloid leukemia

Zeb1, a zinc finger E-box binding homeobox epithelial-mesenchymal (EMT) transcription factor, confers properties of ‘stemness’, such as self-renewal, in cancer. Yet little is known about the function of Zeb1 in adult stem cells. Here, we used the hematopoietic system, as a well-established paradigm of stem cell biology, to evaluate Zeb1 mediated regulation of adult stem cells. We employed a conditional genetic approach using the Mx1-Cre system to specifically knockout (KO) Zeb1 in adult hematopoietic stem cells (HSCs) and their downstream progeny. Acute genetic deletion of Zeb1 led to rapid onset thymic atrophy and apoptosis driven loss of thymocytes and T cells. A profound cell-autonomous self-renewal defect and multi-lineage differentiation block was observed in Zeb1 KO HSCs. Loss of Zeb1 in HSCs activated transcriptional programs of deregulated HSC maintenance and multi-lineage differentiation genes, and of cell polarity, consisting of cytoskeleton, lipid metabolism/lipid membrane and cell adhesion related genes. Notably, Epithelial cell adhesion molecule (EpCAM) expression was prodigiously upregulated in Zeb1 KO HSCs, which correlated with enhanced cell survival, diminished mitochondrial metabolism, ribosome biogenesis, and differentiation capacity and an activated transcriptomic signature associated with acute myeloid leukemia (AML) signaling. ZEB1 expression was downregulated in AML patients and Zeb1 KO in the malignant counterparts of HSCs - leukemic stem cells (LSCs) - accelerated MLL-AF9 and Meis1a/Hoxa9-driven AML progression, implicating Zeb1 as a tumor suppressor in AML LSCs. Thus, Zeb1 acts as a transcriptional regulator in hematopoiesis, critically co-ordinating HSC self-renewal, apoptotic and multi-lineage differentiation fates required to suppress leukemic potential in AML

Solenogam: A new detector array for γ-ray and conversion-electron spectroscopy of long-lived states in fusion-evaporation products

A new detector array, Solenogam, has been developed at the Australian National University Heavy Ion Accelerator Facility. Coupled initially to the SOLITAIRE 6.5 T, gas-filled, solenoidal separator, and later to an 8 T solenoid, the system enables the study of long-lived nuclear states through -ray and conversion-electron spectroscopy in a low-background environment. The detector system is described and results from the commissioning experiments are presented.The authors are grateful to the academic and technical staff of the Department of Nuclear Physics (Australian National University) and the Heavy Ion Accelerator Facility for their continued support. This re- search was supported by the Australian Research Council through grant numbers FT100100991, DP120101417, DP14102986, and DP140103317. M.S.M.G., A.A., B.J.C., J.T.H.D., T.J.G., B.Q.L., and T.P. acknowledge the support of the Australian Government Research Training Program. Support for the ANU Heavy Ion Accelerator Facility operations through the Australian National Collaborative Research Infrastructure Strategy (NCRIS) program is acknowledge