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3 resultados encontrados para: AUTOR: Metcalfe, Sarah E.
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Resumen en: Inglés |
Resumen en inglés

Perceptions of climate change, the impacts of and responses to climatic variability and extreme weather are explored in three communities in the Yucatan Peninsula, Mexico, in relation to livelihood resilience. These communities provide examples of the most common livelihood strategies across the region: small-scale fisheries (San Felipe) and semi-subsistence small-holder farming (Tzucacab and Calakmul). Although the perception that annual rainfall is reducing is not supported by instrumental records, changes in the timing of vital summer rainfall and an intensification of the mid-summer drought (canicula) are confirmed. The impact of both droughts and hurricanes on livelihoods and crop yields was reported across all communities, although the severity varied. Changes in traditional milpa cultivation were seen to be driven by less reliable rainfall but also by changes in Mexico’s agricultural and wider economic policies. Diversification was a common adaptation response across all communities and respondents, resulting in profound changes in livelihood strategies. Government attempts to reduce vulnerability were foundto lack continuity, be hard to access and too orientated toward commercial scale producers. Population growth, higher temperatures and reduced summer rainfall will increase the pressures on communities reliant on small-scale farming and fishing, and a more nuanced understanding of both impacts and adaptations is required for improved livelihood resilience. Greater recognition of such local-scale adaptation strategies should underpin the developing Mexican National Adaptation Policy and provide a template for approaches internationally as adaptation becomes an increasingly important part of the global strategy to cope with climate change.

Quaternary environmental change in the tropics / Edited by Sarah E. Metcalfe and David J. Nash
Metcalfe, S. E. (ed.) ; Nash, David J. (coed.) ;
Chichester, West Sussex, UK : John Wiley & Sons, Inc. , 2012
Clasificación: 551.60901 / QU3
Bibliotecas: Chetumal
SIBE Chetumal
ECO030008014 (Disponible)
Disponibles para prestamo: 1
Índice | Resumen en: Inglés |
Resumen en inglés

The global climate changes that led to the expansion and contraction of high latitude ice sheets during the Quaternary period were associated with equally dramatic changes in tropical environments. These included shifts in vegetation zones, changes in the hydrology and ecology of lakes and rivers, and fluctuations in the size of mountain glaciers and sandy deserts. Until recently it was thought that such changes were triggered by fluctuations in the distribution of polar ice cover. Now there is increasing recognition that the tropics themselves have acted as drivers of global climate change over a range of timescales, with the oceans playing a key role. The aim of Quaternary Environmental Change in the Tropics is to provide a synthesis of the changes that occurred in tropical terrestrial and marine systems during the Pleistocene and Holocene, complementing data-derived reconstructions with output from state-of-the-art climate models. It is targeted at final-year undergraduate students and research specialists, but will provide an introduction to tropical Quaternary research for a variety of other readers.


Contents in Brief
List of contributors
I Global contexts
1 Introduction
2 Contemporary climate and circulation of the tropics
II Regional environmental change
3 Tropical oceans
4 Africa
5 India, Arabia and adjacent regions
6 China and Southeast Asia
7 Australia and the southwest Pacific
8 Latin America and the Caribbean
III Global syntheses
9 Modelling of tropical environments during the Quaternary
10 Historical environmental change in the tropics
11 Past environmental changes, future environmental challenges

Computerised environmental modelling: a practical introduction using excel / J. Hardisty, D. M. Taylor and S. E. Metcalfe
Hardisty, J. (1955-) ; Taylor, D. M. (coaut.) ; Metcalfe, S. E. (coaut.) ;
Chichester, England : John Wiley and Sons , 1993
Clasificación: 333.7 / H37
Bibliotecas: Chetumal
SIBE Chetumal
ECO030004533 (Disponible) , ECO030001231 (Disponible)
Disponibles para prestamo: 2