Download e-book for iPad: Coastal Dunes: Ecology and Conservation by M. L. Martínez, Norbert P. Psuty

By M. L. Martínez, Norbert P. Psuty

ISBN-10: 3540740015

ISBN-13: 9783540740018

In this publication, coastal dune experts from tropical and temperate latitudes disguise a large set of themes, together with: geomorphology, group dynamics, ecophysiology, biotic interactions and environmental difficulties and conservation. The booklet bargains ideas for destiny learn, choosing correct subject matters the place designated wisdom remains to be missing. It additionally identifies administration instruments that may advertise and hold the wealthy range of the dune environments within the context of continuous coastal development.

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Extra resources for Coastal Dunes: Ecology and Conservation

Sample text

G. ), act to reduce the flow and transport more slowly so that there is often a gradual downwind reduction in transport and asymmetric dunes are formed with the short slope on the downwind (lee slope) side (Hesp 2002). 2 Tropical Versus Temperate Foredune Trends and Morphologies While it may be seen from the brief discussion above that a significant number of factors influence incipient (and subsequently) established foredune morphology, plant morphology and density and dominant mode of growth are critical factors, since these strongly influence sediment transport and deposition within plant canopies.

A. Hesp fields (Lam Cong Dinh 1998), although local information suggests that these dunes were formerly vegetated (and most probably a different dune type) prior to defoliation during the Vietnam War. Extensive parabolic and transgressive dune fields occur in NE Queensland and the Northern Territory in both tropical monsoon and savannah climates (Pye 1983a–c; Lees et al. 1990; Shulmeister and Lees 1992; Shulmeister et al. 1993; Swan 1979b). Massive transgressive dune fields and very large foredune plains have developed all along the tropical coast of Brazil (De Lacerda et al.

The larger transgressive dune ridges are primary and secondary coastal dunes that have developed during times of shoreline erosion but with sufficient sand transferred inland to maintain a net positive sediment budget. This was the situation that created the transition at the junction of the coastal and fluvial topographies, and the alternation of sediment supply has been repeated several times to create the larger foredune ridges cutting through the low curving abandoned foredunes. Some of the inland ridges remained actively-transgressing inland with blowouts and parabolic dune forms despite being separated from the sand source at the shoreline, thereby becoming a complex of secondary dune forms.

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Coastal Dunes: Ecology and Conservation by M. L. Martínez, Norbert P. Psuty

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