Author: Publisher:
ISBN:
Category : Killer whale
Languages : en
Pages : 12
Book Description
Identification of Habitats of Special Importance to Resident Killer Whales (Orcinus Orca) Off the West Coast of Canada
Author: Habitats of Special Importance to Resident Killer Whales (Orcinus Orca) of the West Coast of Canada
Author: John Kenneth Baker FordPublisher:
ISBN:
Category : Killer whale
Languages : en
Pages : 57
Book Description
Information in Support of the Identification of Critical Habitat for Transient Killer Whales (Orcinus Orca) Off the West Coast of Canada
Author: Canadian Science Advisory SecretariatPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Information in Support of the Identification of Critical Habitat for Transient Killer Whales (Orcinus Orca) Off the West Coast of Canada
Author: Information in support of the identification of critical habitat for transient killer whales (Orcinus orca) off the West Coast of Canada
Author: John Kenneth Baker FordInformation in Support of the Identification of Critical Habitat for Transient Killer Whales (Orcinus Orca) Off the West Coast of Canada
Author: John Kenneth Baker FordPublisher:
ISBN:
Category : Killer whale
Languages : en
Pages : 46
Book Description
Before-After Control-Impact (BACI) Studies in the Ocean
Author: Edward UrbanPublisher: Frontiers Media SA
ISBN: 2889719480
Category : Science
Languages : en
Pages : 239
Book Description
Identifying and Comparing Important Areas for Marine Sustainable Use and Conservation
Author: Sofie Van ParijsPublisher: Frontiers Media SA
ISBN: 2832548644
Category : Science
Languages : en
Pages : 342
Book Description
The ocean is under increasing threat from the expansion of human activities. The combined impacts of these threats as well as the potential impacts of climate change and ocean acidification have placed thousands of species at risk of extinction, and have impaired the structure, function, productivity and resilience of marine ecosystems. Currently, some parts of the world's oceans are significantly impacted, yet are without any form of effective management. Only a small proportion of the oceans are within protected area systems. Globally, measures are being taken to increase protection and sustainable management, but application is uncoordinated and not always effective. In order to support effective policy action by countries and competent international and regional organizations, it is critical to build a sound understanding of the most ecologically and biologically important ocean areas that support healthy marine ecosystems so that the necessary steps to ensure the long-term function and resilience of these systems can be taken.
Killer Whales
Author: John K. B. FordPublisher: UBC Press
ISBN: 0774844302
Category : Nature
Languages : en
Pages : 106
Book Description
This new edition of this best-selling book presents updated results ofover twenty-five years of killer whale research in British Columbia andWashington. Intended for both whale enthusiasts and researchers, itcontains the latest information on killer whale natural history andpresents a catalogue of close to 300 photographs of"resident" killer whales as well as a genealogical registrythat enables readers to identify individual killer whales and theirfamily groups. The technique of photographing the dorsal fin and greysaddle patch of whales has revolutionized the study of killer whales,allowing researchers to follow individuals over the course of manyyears.
Southern Resident Killer Whales (Orcinus Orca)
Author: Deborah A. GilesPublisher:
ISBN: 9781321016574
Category :
Languages : en
Pages :
Book Description
This dissertation concerns the southern resident killer whales (Orcinus orca), a genetically isolated population of fish-eating killer whales that frequent the international waters of the Salish Sea between the United States and Canada in the eastern Pacific Ocean. Research was conducted from June 1 to October 31, 2007 and from June 7 to October 31, 2008, between geographic coordinates: 48°12' to 49° N latitude by 122°43' to 123°50° W longitude. The southern resident killer whale population has experienced multiple fluctuations since population surveys were initiated by the Center for Whale Research (CWR) in the mid 1970's. In November 2005, the U.S. National Oceanic and Atmospheric Administration's National Marine Fisheries Service (NMFS), Northwest Regional Office listed the southern resident killer whales as an endangered distinct population segment of the species Orcinus orca under the United States Endangered Species Act (ESA). Several risk factors including reductions in the quantity and quality of prey (salmon), exposure to persistent toxins, and disturbance from vessel presence and associated noise were identified as contributing to the decline of this already small population. With the listing under the ESA, critical habitat was designated in the inland waters around the U.S. San Juan Islands, Washington State and the Canadian Gulf Islands, British Columbia, Canada. Chapter one, Managing Vessel-based Killer Whale Watching: A Critical Assessment of the Evolution from Voluntary Guidelines to Regulations in the Salish Sea, provides background on the southern resident killer whales and the robust international whale watching industry in the region. This chapter also provides a detailed history of local, state, federal and international vessel laws and guidelines for watching whales in the Salish Sea. Chapter two, Non-invasive methods to study southern resident killer whales and vessel compliance with regulations, describes a novel equipment package, consisting of a differential GPS integrated with a digital compass and laser rangefinder that allowed me to collect accurate geo-referenced locations and behavioral data on whales and vessels throughout the whale's critical habitat. To improve both the spatial and temporal data on whale-vessel interactions, the information collected with this equipment was used to assess vessel compliance with local, state and federal laws and the regionally accepted best-practices Be Whale Wise Guidelines. Chapter three, The effects of vessels on group cohesion and behavior of southern resident killer whales (Orcinus orca), discusses research investigating changes in killer whale group cohesion in response to vessel density, distance and mode of operation. Future cetacean studies would benefit from using the equipment and methods presented here, especially in areas that are not conducive to land-based theodolite collected data.