Blue And Fin Whale Acoustics And Ecology Off Antarctic Peninsula
DOWNLOAD
Download Blue And Fin Whale Acoustics And Ecology Off Antarctic Peninsula PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Blue And Fin Whale Acoustics And Ecology Off Antarctic Peninsula book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Blue And Fin Whale Acoustics And Ecology Off Antarctic Peninsula
DOWNLOAD
Author : Ana Širović
language : en
Publisher:
Release Date : 2006
Blue And Fin Whale Acoustics And Ecology Off Antarctic Peninsula written by Ana Širović and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Baleen whales categories.
Blue whales (Balaenoptera musculus) and fin whales (B. physalus) in the Southern Ocean were subjects of extensive whaling industry during the twentieth century. Their current population numbers remain low, making population monitoring using traditional visual surveys difficult. Both blue and fin whales produce low frequency, regularly repeated calls and are suitable for acoustic monitoring. Eight continuously recording acoustic recorders were deployed off the Western Antarctic Peninsula (WAP) between March 2001 and February 2003. Ranges to calling blue and fin whales were calculated using hyperbolic localization and multipath arrivals up to the distances of 200 and 56 km., respectively. Calls of both species had high intensity, blue whales calls had the average source level 189±3dB re: 1[mu]Pa at 1 meter and the average fin whale call source level was 189±4dB re: 1[mu]Pa at 1 meter. Automatic call detection methods were used for analysis of calling blue and fin whale seasonal presence and habitat preferences. Blue whale calls were detected year round (on average 177 days/year) with peak calling in March and April and a secondary peak in October and November. Fin whale calling rates were seasonal with calls detected between February and June (on average 51 days/year) with a peak in May. During the entire deployment period, detected calls from both species showed negative correlation with sea ice concentrations. Baleen whale sounds were recorded during multiple cruises off the Antarctic Peninsula using sonobuoys. Recordings from two fall cruises off the WAP were used for analyses of habitat preferences of calling blue and fin whales. The presence of calling blue whales was positively correlated with bottom depth and sea surface temperature and negatively correlated with krill biomass in the top 100 meters and abundance of the rest of the zooplankton at depth (101-300 meters). Locations of fin whale calls were associated with a deep trough area and high Chl-a concentrations. Distribution of baleen whale calls recorded in the Scotia Sea (east of the Antarctic Peninsula) indicated that fin whales occur in open water, and blue, southern right (Eubalaena australis), minke (B. bonaerensis), and humpback whales (Megaptera novaeangliae) occur near islands or close to the ice edge.
Ethology And Behavioral Ecology Of Mysticetes
DOWNLOAD
Author : Christopher W. Clark
language : en
Publisher: Springer Nature
Release Date : 2022-07-02
Ethology And Behavioral Ecology Of Mysticetes written by Christopher W. Clark and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-07-02 with Science categories.
In this book, an international team of leading marine mammal scientists, with a remarkably diverse set of backgrounds and areas of expertise, lead you through a synthesis of current knowledge on baleen whales. Baleen whales are the largest animals ever to have lived on this planet. They also have the lowest and most intense voices on Earth, most likely evolved to take advantage of ocean acoustic transmission conditions so as to be detectable across ocean basins. Some baleen whales can live to be 150-200 years old. They migrate many thousands of kilometers between feeding and breeding areas. They produce songs and calls that serve as behavioral foundations for establishing, maintaining and expanding their cultural identities. To conclude that we know the behavioral limits of these large brained, long-lived animals would be naïve. As baleen whale scientists, we are still beginning to comprehend the enormous complexities and natural histories of these remarkable animals. Today, the fact that whales sing is known throughout much of the world. This awareness started 50 years ago with the publication and popularization of a collection of humpback song recordings that motivated research into baleen whale behavioral ethology. In this book’s chapters, a reader’s experiences will stretch from learning about baleen whale laryngeal anatomy associated with their different voices to learning about the vast ocean areas over which their voices can be heard and the emerging complexities of their culturally defined societies. These are accompanied by chapters on the fundamental ethological contexts of socializing, migrating, and foraging. Two common themes permeate the book. One theme highlights the phenomenal increase in scientific knowledge achieved through technological advancements. The other theme recognizes the impacts of human-made activities on ocean acoustic environments and the resultant influences on the health and survival of individual whales and their populations. Although the book is intentionally ambitious in its scope, as scientists, we fully recognize that baleen whale science is still in its infancy. Many profound revelations await discovery by cohorts of young, multi-talented explorers, some of whom are stretching their wings in this volume and some of whom are reading these scientific stories for the first time.
Atlantic Fleet Active Sonar Training
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2008
Atlantic Fleet Active Sonar Training written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Integrated Ecosystem Studies Of Western Antarctic Peninsula Continental Shelf Waters And Related Southern Ocean Regions
DOWNLOAD
Author : Eileen Elizabeth Hofmann
language : en
Publisher:
Release Date : 2004
Integrated Ecosystem Studies Of Western Antarctic Peninsula Continental Shelf Waters And Related Southern Ocean Regions written by Eileen Elizabeth Hofmann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Continental shelf categories.
Listening To Whales
DOWNLOAD
Author : Rianna Elizabeth Burnham
language : en
Publisher:
Release Date : 2018
Listening To Whales written by Rianna Elizabeth Burnham and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
The acoustic sense is vital to all life processes for whales. It defines their 'active space', and the extent and nature of interactions with their surroundings. Yet, we are still learning the basics of most species' acoustic behaviours and vocal repertoires. The ecology of gray whales (Eschrichtius robustus) is well known, however vocal behaviours are not well described outside of breeding lagoons. Bottom-stationed acoustic monitoring devices were deployed in Clayoquot Sound, west coast Vancouver Island to explore acoustics use outside of these areas. During migration the use of low frequency moan calls are prevalent, perhaps for group cohesion, with lead whales guiding followers. During the summer more inter-group calls (knocks, upsweeps) are employed. Here I explored the use of 'motherese' calls between cow-calf pairs, and how this may mirror the weaning process. Photoperiod, increased ambient noise, threat perception, and vessel and aircraft presence elicited acoustic responses. Calling was also altered by social, behavioural, and physiological state. These results begin to show gray whales to be acoustically sensitive, with highly nuanced vocalising behaviours. Acoustic methods afford monitoring at times and in places that would otherwise be impossible, and lends themselves to the study of rare or cryptic species. Ocean gliders with passive acoustic capacity were used to explore deep-coastal and shelf-break waters for large whale species. Humpback whales (Megaptera novaeangliae) were common on the shelf, whereas calls from fin (Balaenoptera physalus), blue (Balaenoptera musculus), sperm (Physeter macrocephalus), and possibly sei whales (Balaenoptera borealis) were heard in more offshore locations. Concurrent habitat data steams help establish area use and importance to these species. The surveys focus on submarine canyons that are thought to aggregate prey. Calls denote whale presence, whereas call type may suggest behaviour and habitat use. Calls described for feeding and breeding were heard for fin and blue whales, with distinct temporal distribution. Acoustic techniques complement other ecological methods and can fill existing knowledge gaps in whale life histories. It can also help quantify the effect of human activities on whale populations and ocean soundscapes. These findings will inform management actions. I provide examples of management links to acoustic-ecological research.
Dissertation Abstracts International
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2006
Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Dissertations, Academic categories.
Listening In The Ocean
DOWNLOAD
Author : Whitlow W. L. Au
language : en
Publisher: Springer
Release Date : 2016-02-25
Listening In The Ocean written by Whitlow W. L. Au and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-02-25 with Science categories.
This title brings to light the discoveries and insights into the lives of many marine species made possible over the last decade by passive acoustic recorders (PAR). Pop-ups, ARF, HARP, EAR, Bprobe, C-POD Atag, and Dtag are the acronyms of some of the many PARs that have changed our understanding of how marine animals live and strive in the ocean. Various types of PARs are used by different investigators in different areas of the world. These recorders have accumulated copious amounts of very important data, unveiling previously unknown information about large marine animals. Temporal, seasonal and spatial distribution patterns have been uncovered for many marine species. There have been many discoveries, new understandings and insights into how these animals live in and utilize the ocean and the importance of acoustics in their lives. Listening Within the Ocean summarizes these important discoveries, providing both a valuable resource for researchers and enjoyable reading for non-professionals interested in marine life.
Innovation And Discoveries In Marine Soundscape Research
DOWNLOAD
Author : Bob Dziak
language : en
Publisher: Frontiers Media SA
Release Date : 2022-04-04
Innovation And Discoveries In Marine Soundscape Research written by Bob Dziak and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-04 with Science categories.
The Stocks Of Whales
DOWNLOAD
Author : Neil Alison Mackintosh
language : en
Publisher:
Release Date : 1965
The Stocks Of Whales written by Neil Alison Mackintosh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Whales categories.
The Azores Marine Ecosystem An Open Window Into North Atlantic Open Ocean And Deep Sea Environments
DOWNLOAD
Author : Telmo Morato
language : en
Publisher: Frontiers Media SA
Release Date : 2021-01-25
The Azores Marine Ecosystem An Open Window Into North Atlantic Open Ocean And Deep Sea Environments written by Telmo Morato and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-25 with Science categories.