Bryan p wallace (20 résultats)

Etat : As New. Unread book in perfect condition.

Etat : New.

Hardcover. Etat : Good. Good - Bumped and creased book with tears to the extremities, but not affecting the text block, may have remainder mark or previous owner's name - GOOD Standard-sized.

Etat : As New. Unread book in perfect condition.

Etat : New.

Hardcover. Etat : Very Good. Etat de la jaquette : N/A. xiv, 222pp. Laminated pictorial paper-covered boards. 8vo. Sun-faded spine, lightly rubbed spine heel. Internally neat, clean, bright and tight.

Etat : New. Brand New.

Etat : As New. Unread book in perfect condition.

Etat : New. Editor(s): Seminoff, Jeffrey Aleksandr; Wallace, Bryan. Num Pages: 368 pages, Illustrations (some col.), maps (some col.). BIC Classification: PSAF; WNCK. Category: (G) General (US: Trade). Dimension: 235 x 184 x 33. Weight in Grams: 456. . 2012. 2nd ed. hardcover. . . . .

Etat : New.

Etat : New. Editor(s): Seminoff, Jeffrey Aleksandr; Wallace, Bryan. Num Pages: 368 pages, Illustrations (some col.), maps (some col.). BIC Classification: PSAF; WNCK. Category: (G) General (US: Trade). Dimension: 235 x 184 x 33. Weight in Grams: 456. . 2012. 2nd ed. hardcover. . . . . Books ship from the US and Ireland.…

Etat : New. Print on Demand.

Etat : New. KlappentextrnrnThe oceanographic conditions that make the eastern Pacific an epicentre of sea turtle activity also promote massive artisanal and industrial fishing efforts that, coupled with illegal harvesting of eggs and turtles, have led to de.

Etat : New. pp. 400, Maps (Col.).

Etat : New. pp. 400 Illus., Maps (Col.).

Buch. Etat : Neu. Neuware - Sea turtles are flagship species for the world's oceans. They traverse international boundaries during their migrations, serve as vehicles for marine nutrients to terrestrial habitats, and embody the often tenuous relationship between human action and ecosystem health. The East Pacific Ocean is home to some of the most dynamic marine ecosystems, and the most unique sea turtles. Marine biodiversity within this massive ocean region abounds in mangrove estuaries, seagrass pastures, coral reefs, the open ocean, and many other habitats, with sea turtles often the most conspicuous species present. The distinctive traits of the Eastern Pacific have resulted in the smallest leatherbacks, a singular morph of the green turtle, dark and steeply domed olive ridleys, and the most cryptic hawksbills on the planet. Only now are we beginning to understand how these varieties have evolved. However, the oceanographic conditions that make this an epicenter of sea turtle activity also promote massive artisanal and industrial fishing efforts that, coupled with illegal harvesting of eggs and turtles, have led to declines of several turtle populations in the region. The essays and stories in Sea Turtles of the Eastern Pacific describe for the first time the history of this exploitation, as well as recent sea turtle conservation initiatives and scientific research in the region. The first third of the book considers the biology of the turtles, focusing on general overviews of current ecological management challenges facing the turtles' survival. The second third treats issues of marine policy related to turtle conservation. In conclusion, the book offers six compelling stories of conservation success. By the end, readers will have gained a in-depth view not only of these magnificent creatures, but also the people involved in research and conservation efforts in one of the most remarkable regions of our planet. …

hardcover. Etat : New. NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

Hard Cover. Etat : Very Good. Etat de la jaquette : Very Good. 8vo. 376 pp. inc. index.Very good in originalblack cloth gilt, negligible shelf wear, very good plus in original unclipped dustwrapper with sun fading to spine and part of rear cover otherwise very good Size: 8vo - over 7¾" - 9¾" tall.

Paperback / softback. Etat : New. This item is printed on demand. New copy - Usually dispatched within 5-9 working days.

Paperback. Etat : new. Paperback. The leatherback sea turtle (Dermochelys coriacea; leatherback) is the largest and most migratory of the world's turtles, with the most extensive geographic range of any living reptile. This highly specialized turtle is the only living member of the family Dermochelyidae. It exhibits reduced external keratinous structures: scales are temporary, disappearing within the first few months and leaving the entire body covered by smooth black skin. Dorsal keels streamline a tapered form. The species has a shallow genealogy and strong population structure worldwide, supporting a natal homing hypothesis. Gravid females arrive seasonally at preferred nesting grounds in tropical and subtropical latitudes, with the largest colonies concentrated in the southern Caribbean region and central West Africa. Non-breeding adults and sub-adults journey into temperate and subarctic zones seeking oceanic jellyfish and other soft-bodied invertebrates. Long-distance movements are not random in timing or location, with turtles potentially possessing an innate awareness of profitable foraging opportunities. The basis for high seas orientation and navigation is poorly understood. Studies of metabolic rate demonstrate marked differences between leatherbacks and other sea turtles: the "marathon" strategy of leatherbacks is characterized by relatively lower sustained active metabolic rates. Metabolic rates during terrestrial activities are well-studied compared with metabolic rates associated with activity at sea. The species faces two major thermoregulatory challenges: maintaining a high core temperature in cold waters of high latitudes and/or great depths, and avoiding overheating in some waters and latitudes, especially while on land during nesting. The primary means of physiological osmoregulation are the lachrymal glands, which eliminate excess salt from the body. The leatherback was re-classified in 2000 by the International Union for the Conservation of Nature (IUCN) Red List of Threatened Species as Critically Endangered. It remains vulnerable to a wide range of threats, including bycatch, ingestion of and entanglement in marine debris, take of turtles and eggs, and loss of nesting habitat to coastal processes and beachfront development. There is no evidence of significant current declines at the largest of the Western Atlantic nesting grounds, but Eastern Atlantic populations face serious threats and Pacific populations have been decimated. Incidental mortality in fisheries, implicated in the collapse of the Eastern Pacific population, is a largely unaddressed problem worldwide. Although sea turtles were among the first marine species to benefit from legal protection and concerted conservation effort around the world, management of contemporary threats often falls short of what is necessary to prevent further population declines and ensure the species' survival throughout its range. Successes include regional agreements that emphasize unified management approaches, national legislation that protects large juveniles and breeding-age adults, and community-based conservation efforts that offer viable alternatives to unsustainable patterns of exploitation. Future priorities should include the identification of critical habitat and priority conservation areas, including corridors that span multiple national jurisdictions and the high seas, the creation of marine management regimes at ecologically relevant scales and the forging of new governance patterns, reducing or eliminating causal factors in population declines (e.g., over-exploitation, bycatch), and improving management capacity at all levels. This item is printed on demand. Shipping may be from our UK warehouse or from our Australian or US warehouses, depending on stock availability.…