Results 171 to 180 of about 1,522 (208)
Some of the next articles are maybe not open access.
Acoustic reflectivity of a harbor porpoise Phocoena phocoena
The Journal of the Acoustical Society of America, 2019Acoustic backscatter measurements were conducted on a stationary harbor porpoise (Phocoena phocoena) under controlled conditions. The measurements were made with the porpoise in the broadside aspect using three different types of signals as follows: (1) a 475-ms linear frequency-modulated (FM) pulse with a frequency range from 23 to 160 kHz; (2) a ...
Whitlow W L, Au +2 more
openaire +2 more sources
Spatial Impact of Wind Farm Construction on Harbor Porpoise Detectability
2023To combat impacts of climate change, offshore wind farm construction is accelerating globally. Accompanying increases in construction activity have raised concerns about associated noise impacts on acoustically sensitive species, including harbor porpoises (Phocoena phocoena).
Van Geel, Nienke C.F. +10 more
openaire +4 more sources
Hiatal Hernia in a Harbor Porpoise (Phocoena phocoena)
Journal of Wildlife Diseases, 1993We observed the displacement of the first compartment of the stomach through the diaphragmatic hiatus into the thoracic cavity in an immature harbor porpoise (Phocoena phocoena). This hiatal hernia, coupled with a severe pneumonia, contributed to the emaciation and death of the animal.
openaire +2 more sources
Mechanical properties of the harbor porpoise lung, Phocoena phocoena
Respiration Physiology, 1979The pressure-volume and pressure-flow characteristics of the excised lungs of 5 harbor porpoise were determined. It was found that: (1) in comparison to terrestrial mammals the lung volume relative to body weight is large, (2) the lungs are capable of emptying to less than 17% of total lung capacity, (3) peak expiratory flowrates of 5 to 10 vital ...
G L, Kooyman, E E, Sinnett
openaire +2 more sources
Notes on a Specimen of the Harbor Porpoise
Journal of Mammalogy, 1957On May 20, 1955, a small whale was washed ashore at Stillwater Cove, Pebble Beach, Monterey County, California (36°34′N, 121°56′W). Thomas N. Fast, Dr. Elliot C. Williams, and Eric Barham from the Hopkins Marine Station of Stanford University secured the animal while it was still alive and brought it back to the laboratory where it was identified as a ...
openaire +1 more source
Behavioral Reactions of Harbor Porpoise to Pile-Driving Noise
2012Pile driving of large steel monopiles in offshore waters has increased rapidly in recent years due to the expanding development of offshore wind energy. In particular, Phocoena phocoena (harbor porpoise) has been the focus of attention with respect to a possible negative impact.
Tougaard, Jakob; id_orcid 0000-0002-4422-7800 +4 more
openaire +3 more sources
Impacts of Anthropogenic Sounds on Phocoena phocoena (Harbor Porpoise)
2012Anthropogenic underwater sound in the seas and oceans is increasing. Phocoena phocoena (harbor porpoise) is sensitive to underwater sound because of its very acute hearing, wide hearing frequency range, and high responsiveness to sounds. The detection of sounds by animals and the degree to which sounds have an effect on animals involve the ...
Ronald, Kastelein, Nancy, Jennings
openaire +2 more sources
Harbor Porpoises and Gill Nets in the Gulf of Maine
Conservation Biology, 1993In many areas of their range, harbor porpoise (Phocoenaphocoena) populations are either depleted or in decline; incidental catches in commercial fisheries are often implicated as a factor in these declines (Gaskin 1984). Harbor porpoises have disappeared from parts of the Baltic Sea, the southern North Sea, and portions of the central California coast (
Andrew J. Read +3 more
openaire +1 more source
The stomach of the harbor porpoise Phocoena phocoena (L.)
Canadian Journal of Zoology, 1972The morphological and cytological characteristics of the stomach of the harbor porpoise (Phocoena phocoena (L.)) are described from dissections and histological preparations. The stomach consists of the following three compartments: forestomach, with keratinized stratified squamous epithelium and well-developed muscularis externa; main stomach, with ...
openaire +2 more sources
Prey capture by harbor porpoises
2009The harbor porpoise (Phocoena phocoena) is a small toothed whale living mostly in coastal waters. There are large, but unknown, numbers in the inner Danish waters. Four are in captivity at Fjord & Bælt, Kerteminde, Denmark, one of which was born here in 2006.
Miller, Lee, Verfuss, Ursula
openaire +1 more source