Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Gregory S. Campbell"'
Autor:
Elizabeth A. Becker, Karin A. Forney, Bruce J. Thayre, Amanda J. Debich, Gregory S. Campbell, Katherine Whitaker, Annie B. Douglas, Anita Gilles, Ryan Hoopes, John A. Hildebrand
Publikováno v:
Frontiers in Marine Science, Vol 4 (2017)
Managing marine species effectively requires spatially and temporally explicit knowledge of their density and distribution. Habitat-based density models, a type of species distribution model (SDM) that uses habitat covariates to estimate species dens
Externí odkaz:
https://doaj.org/article/041533d6359141828f0bd2eabc09a981
Publikováno v:
Canadian Journal of Zoology. 94:505-515
The harbor porpoise (Phocoena phocoena (L., 1758)) used to be common in Puget Sound, Washington, but virtually disappeared from these waters by the 1970s. We conducted systematic aerial line-transect surveys (17 237 km total effort) for harbor porpoi
Autor:
Ryan Hoopes, Gregory S. Campbell, John A. Hildebrand, Anita Gilles, Annie B. Douglas, Katherine Whitaker, Bruce J. Thayre, Karin A. Forney, Amanda J. Debich, Elizabeth A. Becker
Publikováno v:
Frontiers in Marine Science, Vol 4 (2017)
Managing marine species effectively requires spatially and temporally explicit knowledge of their density and distribution. Habitat-based density models, a type of species distribution model (SDM) that uses habitat covariates to estimate species dens
Autor:
Marie A. Roch, Melissa S. Soldevilla, E. Elizabeth Henderson, John A. Hildebrand, Sean M. Wiggins, Gregory S. Campbell
Publikováno v:
The Journal of the Acoustical Society of America. 124:609-624
The spectral and temporal properties of echolocation clicks and the use of clicks for species classification are investigated for five species of free-ranging dolphins found offshore of southern California: short-beaked common (Delphinus delphis), lo
Autor:
Richard L. Campbell, Gregory S. Campbell, Kevin D. Heaney, Gerald L. D’Spain, John A. Hildebrand, Tyler A. Helble
Publikováno v:
The Journal of the Acoustical Society of America, vol 134, iss 3
Passive acoustic monitoring of marine mammal calls is an increasingly important method for assessing population numbers, distribution, and behavior. A common mistake in the analysis of marine mammal acoustic data is formulating conclusions about thes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77a0da33c7353c1a1d7d595b86d90c13
https://escholarship.org/uc/item/7h91p6fb
https://escholarship.org/uc/item/7h91p6fb
Publikováno v:
The Journal of the Acoustical Society of America. 111(6)
Steller sea lion (Eumetopias jubatus) mothers and pups establish and maintain contact with individually distinctive vocalizations. Our objective was to develop a robust neural network to classify females based on their mother-pup contact calls. We ca
Publikováno v:
The Journal of the Acoustical Society of America. 125:2677-2677
Dall’s porpoise (Phocoenoides dalli) echolocation clicks have not been widely recorded. Concurrent with visual observations, acoustic recordings of free‐ranging Dall’s porpoise were made offshore of southern California using a towed hydrophone
Publikováno v:
The Journal of the Acoustical Society of America. 108:2541-2541
Steller sea lions (Eumetopias jubatus) breed and rear their young in coastal rookeries dispersed along the northern tier of the North Pacific. Population densities are high and no allomaternal behavior occurs, providing strong selection pressure for