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Book
Pollinisation : un équilibre en péril
Authors: ---
ISBN: 9782722606616 Year: 2024 Publisher: Paris : Collège de France,

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Abstract

Si la biodiversité est souvent comprise comme la variété des formes de vie, elle se caractérise aussi par la diversité des interactions entre les êtres vivants : compétition, coopération, prédation… Produit d’une longue coévolution, ces interactions maillent la surface de la Terre et font de la biodiversité le « tissu vivant de la planète », qui régule son fonctionnement. La crise de la biodiversité actuelle implique ainsi non seulement la disparition d’espèces, mais également celle, tout aussi grave, des interactions : le tissu vivant de la planète se distend. À travers l’étude révélatrice des interactions entre plantes à fleurs et pollinisateurs, l’autrice met en lumière le délitement progressif de ce maillage essentiel à la vie sur Terre. Pour inverser la tendance, elle propose de rétablir une autre forme d’interactions : celles entre l’humanité et le reste du vivant.


Book
Ecosystem collapse and recovery
Author:
ISBN: 9781108460200 9781108472739 9781108570022 9781108561105 Year: 2021 Publisher: Cambridge, UK : Cambridge University Press,

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There is a growing concern that many important ecosystems, such as coral reefs and tropical rain forests, might be at risk of sudden collapse as a result of human disturbance. At the same time, efforts to support the recovery of degraded ecosystems are increasing, through approaches such as ecological restoration and rewilding. Given the dependence of human livelihoods on the multiple benefits provided by ecosystems, there is an urgent need to understand the situations under which ecosystem collapse can occur, and how ecosystem recovery can best be supported. To help develop this understanding, this volume provides the first scientific account of the ecological mechanisms associated with the collapse of ecosystems and their subsequent recovery. After providing an overview of relevant theory, the text evaluates these ideas in the light of available empirical evidence, by profiling case studies drawn from both contemporary and prehistoric ecosystems. Implications for conservation policy and practice are then examined.


Book
Tree Rings and Natural Hazards : A State-of-Art
Authors: --- --- --- ---
ISBN: 9789048187362 9789048187355 Year: 2010 Publisher: Dordrecht Springer Netherlands Imprint Springer

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The initial employment of tree rings in natural hazard studies was simply as a dating tool and rarely exploited other environmental information and records of damage contained within the tree. However, these unique, annually resolved, tree-ring records preserve valuable archives of past earth-surface processes on timescales of decades to centuries. As many of these processes are significant natural hazards, understanding their distribution, timing and controls provides valuable information that can assist in the prediction, mitigation and defence against these hazards and their effects on society. Tree Rings and Natural Hazards provides many illustrations of these themes, demonstrating the application of tree rings to studies of snow avalanches, rockfalls, landslides, floods, earthquakes, wildfires and several other processes. Several of the chapters are "classic studies", others represent recent applications using previously unpublished material. They illustrate the breadth and diverse applications of contemporary dendrogeomorphology and underline the growing potential to expand such studies, possibly leading to the establishment of a range of techniques and approaches that may become standard practice in the analysis of natural hazards in the future.

Six degrés : que va-t-il se passer?
Authors: ---
ISBN: 9782100520398 2100520393 Year: 2008 Publisher: Paris : Dunod,

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Les scientifiques prédisent que la température moyenne augmentera de un à six degrés d'ici 2100. Que signifient ces chiffres, comment se traduiront-ils dans notre environnement et dans nos vies ? Pour la première fois, Mark Lynas décrit, degré par degré, l'évolution de la vie sur une planète plus chaude. Il nous révèle pourquoi l'ouest des États-Unis, le sud de l'Europe et l'Australie deviendront inhabitables. Il nous donne une idée du chaos et de la destruction qui nous attendent si aucune action vigoureuse n'est entreprise le plus tôt possible pour réduire l'émission des gaz à effet de serre. Il nous décrit enfin quelles mesures doivent être envisagées pour éviter le pire. Une lecture salutaire !


Book
Tropical forests in transition : ecology of natural and anthropogenic disturbance processes
Author:
ISBN: 3764326018 0817626018 3034872585 3034872569 Year: 1992 Volume: vol *2 Publisher: Basel Boston Berlin Birkhäuser Verlag

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