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Pendant un an, jour après jour, David Haskell a observé un mètre carré de verdure, niché au beau milieu d'une forêt des Appalaches. Au fil des saisons, le voilà qui scrute le sol à la loupe et, patiemment, ausculte le vivant : les tritons, les mousses, les lucioles... Une pluie diluvienne, le passage d'un cerf... Et l'espace restreint de sa contemplation, son « mandala », se révèle un monde à part entière, plein de mystères insoupçonnés. Dans une atmosphère de recueillement digne du Walden de Thoreau, il décrit l'infinie ingéniosité des lois de la nature et interroge la place de l'homme en son cœur, signant un magnifique condensé d'histoire naturelle et de méditation philosophique.

Old growth forest ecology --- Old growth forests --- Natural history --- Seasons --- Nature observation --- Philosophy of nature --- Haskell, David George

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For decades, conservation and research initiatives in tropical forests have focused almost exclusively on old-growth forests because scientists believed that these "pristine" ecosystems housed superior levels of biodiversity. With Second Growth, Robin L. Chazdon reveals those assumptions to be largely false, bringing to the fore the previously overlooked counterpart to old-growth forest: second growth. Even as human activities result in extensive fragmentation and deforestation, tropical forests demonstrate a great capacity for natural and human-aided regeneration. Although these damaged landscapes can take centuries to regain the characteristics of old growth, Chazdon shows here that regenerating-or second-growth-forests are vital, dynamic reservoirs of biodiversity and environmental services. What is more, they always have been. With chapters on the roles these forests play in carbon and nutrient cycling, sustaining biodiversity, providing timber and non-timber products, and integrated agriculture, Second Growth not only offers a thorough and wide-ranging overview of successional and restoration pathways, but also underscores the need to conserve, and further study, regenerating tropical forests in an attempt to inspire a new age of local and global stewardship.

Reforestation. --- Forest ecology. --- Forest ecosystems --- Forests and forestry --- Ecology --- Forestation --- Reafforestation --- Forest conservation --- Revegetation --- Afforestation --- Tree planting --- Tropics --- Equatorial regions --- Equatorial zones --- Subtropical regions --- Subtropics --- Tropical regions --- Tropical zones --- Zones, Equatorial --- Zones, Tropical --- Earth (Planet) --- Ecology. --- Tropical forests --- Natural regeneration --- Deforestation --- History --- Regenerative ability --- Forest management --- forest, nature, regeneration, deforestation, environment, conservation, tropics, ecology, science, old growth, biodiversity, ecosystem, landscapes, carbon cycling, nutrients, succession, degradation, timber, agriculture, commodities, holocene, climate variability, global warming, nonfiction, stewardship, reforestation, hydrology, water, natural resources, hurricanes, fire, wind damage, riverbank, logging, animal abundance, hunter gatherer, soil, seed dispersal, pollination.