Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Alexander S Conrad"'
Autor:
Susanna B Blackwell, Outi M Tervo, Alexander S Conrad, Mikkel H S Sinding, Rikke G Hansen, Susanne Ditlevsen, Mads Peter Heide-Jørgensen
Publikováno v:
PLoS ONE, Vol 13, Iss 6, p e0198295 (2018)
Changes in climate are rapidly modifying the Arctic environment. As a result, human activities-and the sounds they produce-are predicted to increase in remote areas of Greenland, such as those inhabited by the narwhals (Monodon monoceros) of East Gre
Externí odkaz:
https://doaj.org/article/319eee6587504a42837b3f01dd1c6fa7
Autor:
Susanna B Blackwell, Christopher S Nations, Aaron M Thode, Mandy E Kauffman, Alexander S Conrad, Robert G Norman, Katherine H Kim
Publikováno v:
PLoS ONE, Vol 12, Iss 11, p e0188459 (2017)
During summer 2012 Shell performed exploratory drilling at Sivulliq, a lease holding located in the autumn migration corridor of bowhead whales (Balaena mysticetus), northwest of Camden Bay in the Beaufort Sea. The drilling operation involved a numbe
Externí odkaz:
https://doaj.org/article/7a005b32ea5c4f6eb685341816078cac
Autor:
Mads Peter Heide-Jørgensen, Susanna B. Blackwell, Outi M. Tervo, Adeline L. Samson, Eva Garde, Rikke G. Hansen, Manh Cu’ò’ng Ngô, Alexander S. Conrad, Per Trinhammer, Hans C. Schmidt, Mikkel-Holger S. Sinding, Terrie M. Williams, Susanne Ditlevsen
Publikováno v:
Frontiers in Marine Science, Vol 8 (2021)
One of the last pristine marine soundscapes, the Arctic, is exposed to increasing anthropogenic activities due to climate-induced decrease in sea ice coverage. In this study, we combined movement and behavioral data from animal-borne tags in a contro
Externí odkaz:
https://doaj.org/article/2a7e671242f8464d98cc6498b757a6c9
Autor:
Ludovic Tenorio-Hallé, Alexander S. Conrad, Susanna B. Blackwell, Aaron Thode, Robert G. Norman, Katherine H. Kim
Publikováno v:
The Journal of the Acoustical Society of America, vol 150, iss 3
Measurements from bottom-mounted acoustic vector sensors, deployed seasonally between 2008 and 2014 on the shallow Beaufort Sea shelf along the Alaskan North Slope, are used to estimate the ambient sound pressure power spectral density, acoustic tran
Autor:
Ludovic Tenorio-Hallé, Aaron M. Thode, Marc O. Lammers, Alexander S. Conrad, Katherine H. Kim
Publikováno v:
The Journal of the Acoustical Society of America. 151(1)
Acoustic vector sensors allow estimating the direction of travel of an acoustic wave at a single point by measuring both acoustic pressure and particle motion on orthogonal axes. In a two-dimensional plane, the location of an acoustic source can thus
Autor:
Eva Garde, Susanna B. Blackwell, Heide-Jørgensen Mads Peter, Outi M. Tervo, Alexander S. Conrad, Susanne Ditlevsen, Rikke G. Hansen, Adeline L. Samson
Publikováno v:
Tervo, O M, Blackwell, S B, Ditlevsen, S, Conrad, A S, Samson, A L, Garde, E, Hansen, R G & Heide-Jørgensen, M P 2021, ' Narwhals react to ship noise and airgun pulses embedded in background noise ', Biology Letters, vol. 17, no. 11, 20210220 . https://doi.org/10.1098/rsbl.2021.0220
Biology Letters
Biology Letters
Anthropogenic activities are increasing in the Arctic, posing a threat to niche-conservative species with high seasonal site fidelity, such as the narwhalMonodon monoceros. In this controlled sound exposure study, six narwhals were live-captured and
Autor:
Katherine H. Kim, Megan C. Ferguson, Kathleen M. Stafford, Susanna B. Blackwell, Catherine L. Berchok, Alexander S. Conrad, Tiago Reis Marques, Aaron Thode
Publikováno v:
The Journal of the Acoustical Society of America. 149(5)
Funding for the ASAMM project is from Bureau of Ocean Energy Management (BOEM) Interagency Agreements M07RG13260 and M11PG00033 (C. Monnett, R. Denton, and C. Fairfield). Funding for the NOAA mooring and analysis is from BOEM: CHAOZ–M09PG00016 (C.
Autor:
Alexander S. Conrad, Danielle Harris, Len Thomas, Katherine H. Kim, Susanna B. Blackwell, Tiago Reis Marques, Aaron Thode, C. S. Oedekoven
TAM thanks partial support by Centro de Estatistica e Aplicações, Universidade de Lisboa (funded by FCT—Fundação para a Ciência e a Tecnologia, Portugal, through the project UID/MAT/00006/2013). Various methods for estimating animal density fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::439ad8c138fc4cbe7490fc5b51a3d263
https://hdl.handle.net/10023/23572
https://hdl.handle.net/10023/23572
Autor:
Katherine H. Kim, Lauren A. Freeman, Rylan King, Alexander S. Conrad, Emma Ozanich, Brian J. Zgliczynski, Peter Gerstoft, Aaron Thode, Simon Freeman
Publikováno v:
The Journal of the Acoustical Society of America, vol 149, iss 2
Detecting acoustic transients by signal-to-noise ratio (SNR) becomes problematic in nonstationary ambient noise environments characteristic of coral reefs. An alternate approach presented here uses signal directionality to automatically detect and lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd787ab9a7ca5adb27742ed98169fd19
https://escholarship.org/uc/item/9js277xp
https://escholarship.org/uc/item/9js277xp
Autor:
Susanna B. Blackwell, Katherine H. Kim, C. S. Oedekoven, Tiago Reis Marques, Koen Bröker, Danielle Harris, Aaron Thode, Alexander S. Conrad, Len Thomas
Publikováno v:
The Journal of the Acoustical Society of America, vol 147, iss 3
Over 500 000 automated and manual acoustic localizations, measured over seven years between 2008 and 2014,were used to examine how natural wind-driven noise and anthropogenic seismic airgun survey noise influence bowheadwhale call densities (calls/km
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7c6520d71615f960d7937a9a5446693
https://escholarship.org/uc/item/68j8h5p1
https://escholarship.org/uc/item/68j8h5p1