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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.
Pollination. --- Biodiversity conservation. --- Pollinisation. --- Perturbations écologiques. --- Biodiversité --- Conservation des ressources.
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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.
Ecological disturbances. --- Ecosystem management. --- Wildlife reintroduction. --- Perturbations écologiques --- Gestion des écosystèmes. --- Animaux --- Réintroduction.
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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.
Tree-rings --- Trees --- Environmental geomorphology --- Natural disasters --- Ecological disturbances --- Dendrochronology. --- Natural disasters. --- Environmental sampling --- Trees. --- Forest ecology --- Arbres --- Géomorphologie de l'environnement --- Catastrophes naturelles --- Perturbations écologiques --- Dendrochronologie --- Echantillonnage (Ecologie) --- Ecologie forestière --- Ecology --- Research --- Environmental aspects --- Cernes --- Ecologie --- Recherche --- Aspect de l'environnement --- Géomorphologie de l'environnement --- Perturbations écologiques --- Ecologie forestière --- EPUB-LIV-FT LIVECOLO LIVTERRE SPRINGER-B --- Forest ecology.
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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 !
Global warming --- Réchauffement de la Terre --- Réchauffement de la Terre --- Environnement --- Politique de l'environnement. --- Gaz à effet de serre --- Climat --- Diversité des espèces --- Perturbations écologiques --- Catastrophes naturelles. --- Global warming. --- Environmental policy. --- Environment --- Effets du réchauffement de la Terre --- Réduction --- Changements --- Aspect médical. --- Effets du climat. --- Effect of global warming on. --- Ecology --- Gaz à effet de serre --- Diversité des espèces --- Perturbations écologiques --- Réduction
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Ecologie van het regenwoud --- Equatorial forest ecology --- Forêt pluviale -- Écologie --- Forêts pluviales -- Écologie --- Rain forest ecology --- Regenwoud -- Ecologie --- Tropical rain forest ecology --- Écocomplexes des forêts pluviales --- Écologie de la forêt pluviale --- Écologie des forêts pluviales --- Écosystèmes des forêts pluviales --- Rain forest ecology. --- Ecological disturbances --- Nature --- Ecologie des forêts pluviales --- Perturbations écologiques --- Homme --- Effect of human beings on. --- Influence sur la nature --- 581.526.422.2 --- 630*4 --- -Ecological disturbances --- -Disturbance ecology --- Disturbances, Ecological --- Ecological perturbations --- Ecosystem disturbances --- Ecosystem perturbations --- Environmental disturbances --- Environmental perturbations --- Perturbations, Ecological --- Ecology --- Rain forests --- Forest ecology --- Tropical rain forest formations --- Forest injuries and protection --- Effect of human beings on --- -Tropical rain forest formations --- 630*4 Forest injuries and protection --- 581.526.422.2 Tropical rain forest formations --- -Equatorial forest ecology --- Disturbance ecology --- Ecologie des forêts pluviales --- Perturbations écologiques --- Anthropogenic effects on nature --- Ecological footprint --- Human beings --- Anthropogenic soils --- Human ecology --- Influence on nature --- Man - Influence on nature.
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