Cultivation of the Floor of Lake Chad: A Response to Environmental Hazard in Eastern Borno, Nigeria

Kolawole, Are

doi:10.2307/633850

Cited by 13 publications

(3 citation statements)

References 2 publications

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“…Since this time, this northern pool of the lake has been occasionally and partially inundated. The drought episodes over the region and the lake recession have profoundly modified the natural resources in the basin and around the lake (Kolawole, 1988;Sarch, 1996Sarch, , 2001. More recently, insufficiently documented analyses of satellite data have been used to illustrate a supposed disappearing Lake Chad (Coe and Foley, 2001;NASA, 2010), an idea that has persisted in part because of the lack of published ground observations.…”

Section: Introductionmentioning

confidence: 97%

Recent changes in Lake Chad: Observations, simulations and management options (1973–2011)

Lemoalle

Bader

Leblanc

et al. 2012

Global and Planetary Change

111

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Section: Introductionmentioning

confidence: 97%

Recent changes in Lake Chad: Observations, simulations and management options (1973–2011)

Lemoalle

Bader

Leblanc

et al. 2012

Global and Planetary Change

111

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“…Few studies have investigated the recent variations of its two basins individually [2,20]. The drought episodes in the region have profoundly modified the natural resources in the basin and around the lake [21][22][23], and a re-evaluation of Lake Chad's water resources is necessary. Since the lake's separation into two individual parts during [1973][1974][1975], open water has persisted only in the southern basin, mostly near the Chari delta [2].…”

Section: Introductionmentioning

confidence: 99%

Monitoring Recent Fluctuations of the Southern Pool of Lake Chad Using Multiple Remote Sensing Data: Implications for Water Balance Analysis

2017

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Abstract:The drought episodes in the second half of the 20th century have profoundly modified the state of Lake Chad and investigation of its variations is necessary under the new circumstances. Multiple remote sensing observations were used in this paper to study its variation in the recent 25 years. Unlike previous studies, only the southern pool of Lake Chad (SPLC) was selected as our study area, because it is the only permanent open water area after the serious lake recession in [1973][1974][1975]. Four satellite altimetry products were used for water level retrieval and 904 Landsat TM/ETM+ images were used for lake surface area extraction. Based on the water level (L) and surface area (A) retrieved (with coinciding dates), linear regression method was used to retrieve the SPLC's L-A curve, which was then integrated to estimate water volume variations (∆V). The results show that the SPLC has been in a relatively stable phase, with a slight increasing trend from 1992 to 2016. On annual average scale, the increase rate of water level, surface area and water volume is 0.5 cm year −1 , 0.14 km 2 year −1 and 0.007 km 3 year −1 , respectively. As for the intra-annual variations of the SPLC, the seasonal variation amplitude of water level, lake area and water volume is 1.38 m, 38.08 km 2 and 2.00 km 3 , respectively. The scatterplots between precipitation and ∆V indicate that there is a time lag of about one to two months in the response of water volume variations to precipitation, which makes it possible for us to predict ∆V. The water balance of the SPLC is significantly different from that of the entire Lake Chad. While evaporation accounts for 96% of the lake's total water losses, only 16% of the SPLC's losses are consumed by evaporation, with the other 84% offset by outflow.

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“…While the Lake Chad crisis clearly has various environmental or ecological dimensions, academic studies have consistently interpreted these as centred on the frontier-style expropriation of land and water resources by elites and state authorities (Mustapha 2014;Watts 2018;also Okolie 1995), rather than on changes in Lake levels or environmentally-induced scarcities. Finally, numerous studies point not just to tensions resulting from environmental changes, including changing Lake levels, in the region but also shared resource management systems and shifts in livelihood strategies and mobility and settlement patterns (Fougou and Abdourahamani 2018;Kolawole 1988;Rangé and Abdourahamani 2014;Sarch and Birkett 2000).…”

Section: A Narrative Without Scientific Foundationmentioning

confidence: 99%

Understanding the Politics of Climate Security Policy Discourse: The Case of the Lake Chad Basin

Daoust

Selby

2022

Geopolitics

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Understanding the politics of climate security policy discourse: the case of the Lake Chad BasinPolicy discourse on the conflict and security implications of climate change has repeatedly found it to be overstated, misleading, and out of line with the balance of scientific evidence. However, the reasons for this recurring science-policy divide have not yet been systematically investigated. To explore this issue, we examine the case of Lake Chad, which over the last decade has become a poster child for climate conflict. We seek to understand and explain how this climate security narrative has gained such traction. Drawing on interviews and documentary analysis we examine the key practices, interests and hierarchies underpinning the narrative's rise and reproduction, and show that it is essentially a political construct, reflecting a combination of questionable epistemic manoeuvres and geopolitical, economic and climate mitigation agendas. Our findings suggest the need for change, and increased caution, in how the climate security community engages with scientific evidence.

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Cultivation of the Floor of Lake Chad: A Response to Environmental Hazard in Eastern Borno, Nigeria

Cited by 13 publications

References 2 publications

Recent changes in Lake Chad: Observations, simulations and management options (1973–2011)

Recent changes in Lake Chad: Observations, simulations and management options (1973–2011)

Monitoring Recent Fluctuations of the Southern Pool of Lake Chad Using Multiple Remote Sensing Data: Implications for Water Balance Analysis

Understanding the Politics of Climate Security Policy Discourse: The Case of the Lake Chad Basin

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