Our knowledge of the structure and dispersal of "Plants, seeds and currents" in the Westindies tropical fruits and seeds is very limited up to the and Azores. Van der Pijl with his extensive know- present day, though richness of species and variety ledge of tropical plants offers a great selection of of forms is overwhelming in the tropical forests. detailed information on the subject" Principles of Morphology of tropical fruits and seeds has always dispersal in higher plants" (1972, and earlier pa- of botanists from many pers). The author who has earned most merits in attracted the curiosity countries and information may be obtained from the field of seed and fruit predation, chemical defenses of plants, and animal-plant interactions is books and publications concerned with taxonomy. Ulbrich's "Biologie der Friichte und Samen" Janzen. He and his collaborators have thrown new of tropical fruits and seeds (1928) gives examples light on this subject. Nonetheless, a large unknown and their dispersal methods. The two volumes by field still remains ahead of us, especially regarding Van der Roosmalen (1977) dealing with the de- a detailed knowledge of fruit and seed dispersal of scription of tropical plants were of utmost value to tropical plant species. me, as the area considered, Surinam, is close to The great opportunity for my own studies was Venezuelan Guiana and because both regions have the fruit and seed collection of Dr.
This volume summarises the result of an interdisciplinary research programme entitled `Rehabilitation of the Atmosphere of the New States of Germany - Effects on Terrestrial Ecosystems'. Before the unification of Germany, emission loads of SO2 and dust particles were up to 18-fold higher in East than in West Germany. However, emission rates have decreased significantly since reunification in 1990, due to the breakdown of a large number of industrial and particularly lignite- fired powerplants and the implementation of clean air technologies. In order to study the effects of these dramatic changes in atmospheric chemistry on terrestrial ecosystems, comprehensive field studies were conducted in pine forest ecosystems along an historic gradient of atmospheric deposition rates in the northeastern lowlands of Germany. The fast and dramatic reduction of dust particle and SO2 emissions offers a unique opportunity to test the role of SO2 and alkaline particle deposition with regard to changes or damage to forest ecosystems and whether the forest stands return to a state of resilience. In this respect, this ecosystem experiment can be looked upon as a roof experiment without a roof.
Author Dusty Pilot draws you into a realm of terror when he takes a quick look inside a cave leading far beneath a Costa Rican rainforest. After entering the cave he becomes lost, and the cave becomes a prison infested with thousands of bats, millions of cockroaches, huge spiders and centipedes. Making his way through the twisting maze of passages without food or water for 14 hours, and a dying flashlight, his story will grab your most primitive fears and crank them up, leaving you breathless. One last startling and unexpected twist (years later back in the United States) warns all of us about the dangers lurking in dark, damp, mysterious places beneath the Earth's crust.
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