Aralkum - a Man-Made Desert: The Desiccated Floor of the Aral Sea (Central Asia) (Ecological Studies)
Having been the fourth largest lake on the globe roughly 50 years ago, today the Aral Sea no longer exists. Human activities caused its desiccation and the formation of a huge new desert, the Aralkum, which can be regarded as one of the greatest ecological catastrophes and - at the same time - the largest primary succession experiment of mankind. This volume brings together the results of international and interdisciplinary long-term studies on the new desert ecosystem and is divided into four main sections. The first section provides an overview of the physical characteristics of the area and covers geological, pedological, geomorphological and climatological aspects and their dynamics, especially dust-storm dynamics. The second focuses on the biotic aspects and highlights the spatial and temporal patterns of the flora and fauna. In the third section studies and projects aiming to combat desertification by phytomelioration and to develop strategies for the conservation of biodiversity are presented. The book is rounded off with a section providing a synthesis and conclusions.
US and Mexican Navy Diver Mission
VERACRUZ, Mexico (July 22, 2010) Navy Diver 2nd Class Troy Crowder, assigned to Company 2-6 of Mobile Diving and Salvage Unit (MDSU) 2, and a Mexican navy diver search the sea floor during a salvage recovery exercise. MDSU-2 is participating in Navy Diver-Southern Partnership Station, a multinational exercise to increase interoperability through diving operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Chris Lussier/Released)
The king Alphonse V of Aragon's soldiers have dug in 1420 a stair in the rocky cliff on which the Bonifacio town is built. The idea was to climb as quickly as possible from sea level the 185 steps to be able to conquer the village. They failed but the stair remained. We could not visit the stair but took a picture from the cliff, at maximum possible depth of field (which explains ISO 400 and 1/50 exposure time)
Let s visit a habitat shallow and deep,
and boiling hot, where acids seep,
and frigid and pressured and mountainy-steep,
Come explore the sea!
Examine odd critters, enormous and tiny,
sunlit reef toasty and arctic ice briny,
jelly-ish, delicate, venomy, spiny,
They all live in the sea!
What sea creature literally spills its guts when disturbed?
Why do bottlenose dolphins wear sponges on their heads?
Dive in to find the answers to these questions and along the way discover some of the incredible ways ocean creatures forage for food, capture prey, trick predators, and protect their young in this collection of witty poems and astonishing facts.
A glossary of scientific terms, notes on the poetic forms used, and resources for more information about ocean creatures are included at the back of the book. Stunning block prints by Leslie Evans enhance and enliven the colorful underwater tour.
2011 Parents' Choice Award
2011 American Academy for the Advancement of Science Summer Recommended Reading List
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