Ecological Effects of an Artificial Island, Rincon Island, Punta Gorda, California PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Ecological Effects of an Artificial Island, Rincon Island, Punta Gorda, California PDF full book. Access full book title Ecological Effects of an Artificial Island, Rincon Island, Punta Gorda, California by G. F. Johnson. Download full books in PDF and EPUB format.
Author: G. F. Johnson
Publisher:
ISBN:
Category : Artificial island
Languages : en
Pages : 116
Get Book Here
Book Description
This study documents marine ecological conditions at Rincon Island, located approximately 0.8 kilometer offshore between Ventura and Santa Barbara, California, in a depth of 14 meters. The island, which was constructed between 1957 and 1958 to serve as a permanent platform for oil and gas production, is particularly suitable for ecological study. Habitat features associated with the armor rock and concrete tetrapods surrounding the island support a 'microecosystem' which differs in biotic composition from surrounding natural bottom areas. A major part of the study was devoted to analysis of seasonal dynamics in biotic composition. Permanent transects extending from the high intertidal to natural bottom were established normal to each of the four cardinal sides of the island. All macrobiota were censused in duplicate 1-square meter quadrats along each transect during each of the four seasons. Data analysis indicated that many species exhibit significant variability in abundance from one season to the next. In general, the findings indicate a rich and varied fauna and flora associated with the high-relief solid substrate of Rincon Island which differs substantially from the more depauperate natural bottom habitats in the area.
Author: G. F. Johnson
Publisher:
ISBN:
Category : Artificial island
Languages : en
Pages : 116
Get Book Here
Book Description
This study documents marine ecological conditions at Rincon Island, located approximately 0.8 kilometer offshore between Ventura and Santa Barbara, California, in a depth of 14 meters. The island, which was constructed between 1957 and 1958 to serve as a permanent platform for oil and gas production, is particularly suitable for ecological study. Habitat features associated with the armor rock and concrete tetrapods surrounding the island support a 'microecosystem' which differs in biotic composition from surrounding natural bottom areas. A major part of the study was devoted to analysis of seasonal dynamics in biotic composition. Permanent transects extending from the high intertidal to natural bottom were established normal to each of the four cardinal sides of the island. All macrobiota were censused in duplicate 1-square meter quadrats along each transect during each of the four seasons. Data analysis indicated that many species exhibit significant variability in abundance from one season to the next. In general, the findings indicate a rich and varied fauna and flora associated with the high-relief solid substrate of Rincon Island which differs substantially from the more depauperate natural bottom habitats in the area.
Author: California. State Earthquake Investigation Commission
Publisher:
ISBN:
Category : Earthquakes
Languages : en
Pages : 218
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1072
Get Book Here
Book Description
Author: U. Seeliger
Publisher: Springer Science & Business Media
ISBN: 3540672281
Category : Science
Languages : en
Pages : 394
Get Book Here
Book Description
Coastal and marine ecosystems, some severely degraded, other still pristine, control rich resources of inshore environments and coastal seas of Latin America's Pacific and Atlantic margins. Conflicts between the needs of the region's nations and diminishing revenues and environmental quality have induced awareness of coastal ecological problems and motivated financial support for restoration and management. The volume provides a competent review on the structure, processes and function of 22 important Latin American coastal marine ecosystems. Each contribution describes the environmental settings, biotic components and structure of the system, considers trophic processes and energy flow, evaluates the modifying influence of natural and human perturbations, and suggests management needs. Although the focus of the book is on basic ecological research, the results have application for coastal managers.
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1064
Get Book Here
Book Description
Author: Sara Oldfield
Publisher: World Conservation Union
ISBN: 9782831703909
Category : Nature
Languages : en
Pages : 214
Get Book Here
Book Description
Found in a variety of forms, cacti and other succulents have elicited widespread interest and tremendous popularity worldwide. Although the subject of a certain amount of debate, about 10,000 species are recognized as belonging to the succulent group. Of these, an estimated 2,000 are threatened with global extinction in the wild and many more are regionally or nationally threatened mainly due to habitat destruction and collection for international trade.This Action Plan brings together from around the world current information on population status, threats and conservation of this particularly important group of plants. Prepared with conservationists, scientists, governments, protected area managers and grant-awarding bodies in mind, it suggests priorities for action and encourages collaboration among interested parties at all levels.
Author: James M. Keith
Publisher:
ISBN:
Category : Biotic communities
Languages : en
Pages : 86
Get Book Here
Book Description
Author: United States. Environmental Protection Agency. Office of Enforcement
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 800
Get Book Here
Book Description
Author: David L. Evans
Publisher: SUNY Press
ISBN: 9780887068966
Category : Science
Languages : en
Pages : 502
Get Book Here
Book Description
This work takes a fresh, modern approach to investigate and explain the predator and prey relationships of insects and spiders, the major terrestrial fauna on earth. Devoted to broad and in-depth analysis of arthropod defenses against predators, the book's approach is both experimentally and theoretically based with major emphasis on evolution, predator strategies and tactics, and prey defensive adaptations and behaviors. The authors explain such topics as cryptic and aposematic coloration, the conflict between sexual and survival needs, web spider prey choice and evolution of prey counter defenses, predator-prey interactions and the origins of intelligence, bird predatory tactics, and caterpillar defense strategies. Also examined is the use of timing for fitness and survival, evolutionary gamesmanship in the predatory bat-moth relationship, colony defense by aper wasps, startle as a defense by moths, aggregation as a defense, chemicals as defenses, plant chemicals as defenses, and venoms as defenses. The authors illustrate each topic with numerous specific well-documented examples presented in a clear, readable style.
Author: Marjorie Johnson
Publisher:
ISBN: 9781893619227
Category : Rio Grande Valley (Colo.-Mexico and Tex.)
Languages : en
Pages : 400
Get Book Here
Book Description
