Download or read book Satellite monitored Movements and Dive Behavior of the Right Whale Eubalaena Glacialis in the Western North Atlantic written by Bruce R. Mate and published by . This book was released on 1992 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Satellite monitored Movements and Dive Behavior of the Right Whale Eubalaena Glacialis in the Western North Atlantic 1991 Results written by Bruce R. Mate and published by . This book was released on 1992 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Satellite Monitored Dive Characteristics of the Northern Right Whale Eubalaena Glacialis written by Sharon L. Nieukirk and published by . This book was released on 1992 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The western North Atlantic population of the northern right whale (Eubalaena glacialis) was severely depleted by whaling over the last century. Despite over fifty years of protection, fewer than four hundred individuals are believed to exist in the North Atlantic. Relatively little is known about the diving behavior, respiratory physiology, or diel activity of these whales, although such information could be useful in predicting population abundance and distribution in relation to food or environmental variables. Dive behavior data can be collected visually, but collection is limited to daylight hours, calm weather, and fortuitous encounters with study animals. Satellite-monitored radio tags offer the opportunity to collect data on individual whales' diving behavior continuously, over long distances and periods of time, and at relatively low cost. Thirteen North Atlantic right whales were tagged and monitored in the Gulf of Maine between 1989 and 1991. One male was tagged in 1989; two adult males, six adult females (two with calves) and one juvenile were tagged in 1990; one adult female (with a calf) and two juveniles were tagged in 1991. The duration of monitoring for the whales varied from
Download or read book Offshore Scientific Technical Publications written by and published by . This book was released on 1990 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MMS Today written by and published by . This book was released on 1991 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Right Whale Ecology in the Northwest Atlantic Ocean written by Mark F. Baumgartner and published by . This book was released on 2002 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ecology of the North Atlantic right whale (Eubalaena glacialis) was examined at three spatial scales during the summer and early fall on their northern feeding grounds. The diving and foraging behavior of right whales was investigated at spatial scales of hundreds to thousands of meters by tagging right whales with time-depth recorders to document their diving behavior. The vertical distributions of temperature, salinity and copepods were measured along the tagged whale's track with a conductivity-temperature-depth instrument (CTD) and an optical plankton counter (OPC). Right whales were observed diving to and presumably feeding on discrete layers of their primary prey. older stages of the calanoid copepod Calanus finmarchicus, aggregated just above the bottom mixed layer. Simultaneous visual and oceanographic surveys conducted in the lower Bay of Fundy and Roseway Basin were used to examine right whale distribution at spatial scales of tens of kilometers. Right whale occurrence was associated with greater depths and thicker bottom mixed layers in these regions. There was additional evidence of an association between right whales and ocean fronts in Roseway Basin. Right whale distribution was also examined on spatial scales of hundreds of kilometers by outfitting whales with satellite-monitored radio tags. Movements of the tagged whales were compared to climatological and remotely-sensed environmental datasets to elucidate habitat preferences. The tagged whales moved extensively throughout the Gulf of Maine and western Scotian Shelf where they frequented shallow basins with cold bottom waters, but avoided deep, comparatively warmer basins. Two of the right whale ecology studies described here depended on the OPC for measures of right whale prey distribution and abundance. A final study was conducted to investigate the response of the OPC to C. finmarchicus copepodite stage 5 (CS). Comparisons between collocated OPC casts and zooplankton net samples indicated that the OPC was adept at detecting C. finmarchicus C5. A calibration equation was developed to predict C. finmarchicus C5 abundance from OPC-derived particle abundance.
Download or read book Surveillance Monitoring and Management of North Atlantic Right Whales Eubalaena Glacialis in Cape Cod Bay Massachusetts written by Moira W. Brown and published by . This book was released on 2000 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1993-12 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Satellite Telemetry and Humpback Whales written by Amy Kennedy and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation has been prepared in manuscript format and contains four individual papers. Each paper/chapter is formatted for the journal to which it has been, or will be, submitted. In the first manuscript, “From Whaling to Tagging: The evolution of knowledge regarding humpback whales in their North Atlantic breeding grounds”, I describe the evolution of humpback whale research from the days of Yankee whaling to the most recent satellite telemetry project in the West Indies breeding grounds. The humpback whales that over-winter in the West Indies are part of one of the most heavily studied whale populations in the world; projects conducted in this area have served as models for humpback whale research world-wide. This manuscript will be submitted for publication in Mammal Review in 2014. In my second manuscript, “Local and migratory movements of humpback whales satellite tracked in the North Atlantic Ocean”, I report the results of a satellite telemetry project that was conducted in the winters of 2008 through 2012 in the breeding areas of Silver Bank (Dominican Republic) and Guadeloupe (French West Indies). The results from this project add a level of detail to the current knowledge about North Atlantic humpback whale habitat use, migration, and population structure that could not be obtained without current satellite tagging technology. This paper has been reviewed and accepted for publication by the Canadian Journal of Zoology and will be published by November, 2013 ii In my third manuscript, “Individual variation in movements of humpback whales satellite tracked in the eastern Aleutian Islands and Bering Sea”, I report the results from a satellite telemetry project conducted off Dutch Harbor, (Alaska, USA) in the summers of 2007 through 2011. Satellite telemetry from this project showed the fine-scale use of foraging habitat in a North Pacific feeding ground. Additionally, a long-distance, within-season travel event was recorded in 2010, prompting speculation about the humpback population structure throughout the Bering Sea. This manuscript has been reviewed and accepted for publication by Endangered Species Research and will be published by November, 2013. In the fourth manuscript, “Assessing implantable satellite tag extrusion using light sensors”, I report the results of a novel approach for remotely quantifying tag rejection; the use of tag-mounted light sensors to indicate extrusion rate. The data for this paper were collected during a 2011 follow-up study aimed at assessing the behavioral and physiological responses of Gulf of Maine humpback whales to current tagging methods. Tag diagnostic technology like this, while still being developed, could significantly improve future telemetry work by updating tag design and placement methods to increase overall project efficiency. This paper has been accepted as a poster presentation at the 20th Biennial Conference on the Biology of Marine Mammals (December 2013, Dunedin New Zealand). It will be updated with the results from the 2013 Gulf of Maine tagging field season and submitted to a peer reviewed journal in 2014.
Download or read book A Leviathan of Our Own written by Warren D. Allmon and published by . This book was released on 2004 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surveillance Monitoring and Management of North Atlantic Right Whales eubalaena Glacialis in Cape Cod Bay Massachusetts written by Massachusetts. Division of Marine Fisheries and published by . This book was released on 1999 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: ...Report on the results of the research activities on the Right Whales in 1999...
Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1832 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Right Whales written by Robert L. Brownell and published by . This book was released on 1986 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: 24 papers on the distribution of right whales and on historical whaling of the species.
Download or read book Analysis of Scarring on North Atlantic Right Whales Eubalaena Glacialis written by Amy R. Knowlton and published by . This book was released on 2005 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In this report we provide the results of a third examination of the scarring data and several new analyses aimed at assessing trends in entanglement rates from 1980-2002. We will evaluate if with these analyses, it may be possible to monitor the effectiveness of future gear modifications and other changes in fishing practice. However, it must be noted that entanglement rates may be influenced by many different factors. When the value of these analyses as monitoring tools are evaluated, there will be discussion in light of their limitations. One important aspect of the entanglement issue that cannot be discerned from this, or any other study, is the geographic location where entanglement interaction occurred"--Introduction.
Download or read book Surveillance Monitoring and Management of North Atlantic Right Whales Eubalaena Glacialis in Cape Cod Bay Massachusetts written by Moira W. Brown and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acoustic Communication in the North Atlantic Right Whale Eubalaena Glacialis written by Susan Elizabeth Parks and published by . This book was released on 2003 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this thesis is the use of sound for communication by the North Atlantic right whale (Eubalaena glacialis). The surface active group (SAG) is the predominant social interaction in this species for which use of sound has been documented. Different group compositions in SAGs indicate that both potentially reproductive and non-reproductive groups have been combined under one label. Sound production in SAGs suggests that females form and maintain the groups by producing Scream calls. Males produce Upcalls to advertise their presence as they come into a group or when the female is on a dive. Males may use Gunshot sounds as threat signals to other males in the group or potentially as reproductive advertisement signals to the female. Some calves produce Warble sounds in SAGs. This may be limited to female calves. This description of acoustic activity in the groups adds to the picture of the SAGs as complex interactions between individuals, rather than simple groups with only one whale producing all the sounds to attract other whales to the group. Playback experiments demonstrate that right whales can use sounds from SAGs to locate the groups. Male right whales approached both North Atlantic and Southern right whale SAG playbacks. Female right whales only approached Southern right whale playbacks. Anatomical modeling resulted in a frequency range of hearing for the right whale (10 Hz - 22 kHz) that is consistent with the sounds that they produce and overlaps the frequency range of most anthropogenic noise sources. This combination of research provides a thorough description how North Atlantic right whales use sound in SAGs and how increasing levels of noise in the oceans may impact right whales in these groups.
Download or read book Right Whales Eubalaena Glacialis in the Western North Atlantic written by Martie J. Crone and published by . This book was released on 1990 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
