3. Producción
Browse
3 results
Search Results
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, Overlooked legacies: climate vulnerability and risk as incrementally constructed in the municipal drinking water system of Lima, Peru (1578–2017)(Elsevier, 2021-03-05)This article analyzes “not knowing” and overlooked or invisibilized information related to the drinking water system in Lima, Peru, a rapidly expanding megacity of the Global South in a region considered to be at high risk to climate related hazards. Within this system, unavailable, or disregarded information exists for a range of topics, from quantitative information about reservoir levels to more qualitative concerns about decision-making and administration. Currently, information made publicly available focuses on end users, specifically: census data on percent of homes connected to the municipal network and statistics comparing consumption patterns across neighborhoods. This deflects attention from topics related to water supply (expansion of urban hydraulic reach, infrastructure investment), and decision-making and control. However, this article considers a type of “not knowing” underlying all of the above, which is the forgotten or overlooked development of Lima's drinking water system over time. It presents results of a study of the history of this system from its origins in the 16th century through modernization in the early- and mid-20th century, concluding with infrastructure investment in the era of climate change. It focuses on continuities in the spatial orientation of water infrastructure as well as long-term conflicts over its administration, to demonstrate how the current system is the result of a centuries-long process of accretion, rather than a system designed to serve the current urban population. Finally, it concludes with a discussion of the significance of this infrastructural and conceptual inertia for understandings of Lima's water risk and vulnerability. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A 121-ka record of Western Andean fluvial response to suborbital climate cycles recorded by rhythmic grain size variations of the Lima fluvial fan(John Wiley and Sons Ltd, 2024-06-30)A complete, fluvial stratigraphic record for the last glacial period of the Western Andes in Peru is not available due to preservation issues and spatial variability in sedimentation. Deposits are typically restricted to incomplete records of fluvial terraces or localised occurrences of alluvial fans and landslides. These landforms are thought to have formed under a regime of climate cyclicity controlling increases in precipitation. Because of the fragmented preservation of these deposits, as well as dating uncertainties, it remains unclear if orbital climate cycles, such as the precession cycle, or suborbital cycles, such as the wet Heinrich events, are driving Andean sedimentation. In this paper, we try to answer this question through a sedimentological–stratigraphical analysis of a much more complete sedimentary sequence than usually found in the region. We present the results of a grain size analysis of 5000 clasts and 13 new luminescence ages of a 52-m-long, stratigraphic section of the Lima fluvial fan in Peru. Bayesian age–depth modelling resulted in a robust chronostratigraphic framework and derived sedimentation rates. The stratigraphic record registered sedimentation from 121.7 ± 4 to (Formula presented.) ka. Three major sedimentation periods occurred between 121.7 to (Formula presented.), 87 ± 1 to (Formula presented.), and (Formula presented.) to (Formula presented.) ka. These periods registered various unconformities and coarsening–fining upward sequences which chronologically correlate to suborbital pluvial periods, recognised from speleothems and lake records, that drove fluvial deposition. They also correlate with the timing of other recognised sedimentation events throughout the Western Andes. Marine regression resulted in fan progradation and not in incision. The Lima fan stratigraphy represents therefore the most complete, last glacial fluvial record for the Peruvian Western Andes to date and it highlights the potential of fluvial fans as recorders of suborbital climate variability. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Corrupting Climate Change Institutions from the Inside: Systemic Collusion in the Peruvian Forest Governance(Elsevier BV, 2023-11-28)This article aims to contribute to the literature on natural resource corruption by analyzing the subnational political economy behind the little enforcement of anticorruption policies. Building on the political ecology approach to corruption, this article focuses on how economic and political interest colludes in a hybrid or ambivalent system that reproduces over and over corrupt practices. Zooming on the subnational case of Ucayali, we find four main factors contributing to understanding the poor enforcement of subnational governments of new forest regulations to reduce deforestation. The first one is infrastructural capacity, which is essential to understand the issue at hand, but it alone is insufficient to comprehend the systemic corruption in the forest sector. A second factor is the decentralization process and the subnational political economy. Our analysis shows the importance of economic and political dynamics at the subnational level in shaping national anti-corruption and deforestation reforms. A third element to consider is the divergent perspectives on the development of the Amazon. While in Peru, the environmental sector has witnessed significant growth at the national level, it still holds limited political influence. Conversely, positions advocating for economic activities that adversely impact the Amazon forest, such as extensive agriculture, exert more control over the region. A fourth factor is the historical marginalization of indigenous groups, who can serve as valuable allies in driving reforms.