{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T15:42:15Z","timestamp":1775835735093,"version":"3.50.1"},"reference-count":29,"publisher":"Acoustical Society of America (ASA)","issue":"4","license":[{"start":{"date-parts":[[2020,10,27]],"date-time":"2020-10-27T00:00:00Z","timestamp":1603756800000},"content-version":"vor","delay-in-days":26,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2020,10,27]],"date-time":"2020-10-27T00:00:00Z","timestamp":1603756800000},"content-version":"tdm","delay-in-days":26,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Bundesamt f\u00c3\u00bcr Naturschutz","award":["Kapitel 1614"],"award-info":[{"award-number":["Kapitel 1614"]}]},{"name":"Bundesamt f\u00c3\u00bcr Naturschutz","award":["532 02 AWZ"],"award-info":[{"award-number":["532 02 AWZ"]}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2020,10,1]]},"abstract":"<jats:p>Porpoise echolocation parameters may vary depending on their acoustic habitat and predominant behavior. Research was conducted in the Wadden Sea, an acoustically complex, tidally driven habitat with high particle resuspension. Source levels and echolocation parameters of wild harbor porpoises were estimated from time-of-arrival-differences of a six-element hydrophone array. The back-calculated peak-to-peak apparent source level of 169\u2009\u00b1\u20095\u2009dB re 1 \u03bcPa was significantly lower than reported from Inner Danish Waters (\u221220\u2009dB) and British Columbia (\u22129\u2009dB) with narrower bandwidth. Porpoises therefore reduce their source level in the Wadden Sea under acoustically complex conditions suggesting an avoidance of cluttering.<\/jats:p>","DOI":"10.1121\/10.0002347","type":"journal-article","created":{"date-parts":[[2020,10,27]],"date-time":"2020-10-27T12:37:06Z","timestamp":1603802226000},"page":"EL382-EL387","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":11,"title":["No need to shout? Harbor porpoises (<i>Phocoena phocoena<\/i>) echolocate quietly in confined murky waters of the Wadden Sea"],"prefix":"10.1121","volume":"148","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1071-4640","authenticated-orcid":false,"given":"Michael","family":"D\u00e4hne","sequence":"first","affiliation":[{"name":"Deutsches Meeresmuseum 1 , Katharinenberg 14-20, 18439 Stralsund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tom","family":"B\u00e4r","sequence":"additional","affiliation":[{"name":"Deutsches Meeresmuseum 1 , Katharinenberg 14-20, 18439 Stralsund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anja","family":"Gallus","sequence":"additional","affiliation":[{"name":"Deutsches Meeresmuseum 1 , Katharinenberg 14-20, 18439 Stralsund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Harald","family":"Benke","sequence":"additional","affiliation":[{"name":"Deutsches Meeresmuseum 1 , Katharinenberg 14-20, 18439 Stralsund, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elisabeth","family":"Herold","sequence":"additional","affiliation":[{"name":"University Rostock 2 , Universit\u00e4tsplatz 1, 18055 Rostock, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Stilz","sequence":"additional","affiliation":[{"name":"3Haldenstra\u00dfe 14, 72379 Hechingen, Germany\u2008michael.daehne@meeresmuseum.de, tom.baer@meeresmuseum.de, anja.gallus@meeresmuseum.de, harald.benke@meeresmuseum.de, elisabeth.herold@uni-rostock.de, peter_stilz@web.de"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"231","published-online":{"date-parts":[[2020,10,27]]},"reference":[{"key":"2023080421595819300_c1","doi-asserted-by":"publisher","first-page":"1671","DOI":"10.1121\/1.421258","article-title":"A simplified formula for viscous and chemical absorption in sea water","volume":"103","year":"1998","journal-title":"J. Acoust. Soc. Am."},{"key":"2023080421595819300_c2","volume-title":"The Sonar of Dolphins","year":"1993"},{"key":"2023080421595819300_c3","doi-asserted-by":"publisher","first-page":"3699","DOI":"10.1121\/1.428221","article-title":"Transmission beam pattern and echolocation signals of a harbor porpoise (Phocoena phocoena","volume":"106","year":"1999","journal-title":"J. Acoust. Soc. Am."},{"key":"2023080421595819300_c4","doi-asserted-by":"publisher","first-page":"275","DOI":"10.3354\/meps10538","article-title":"Baltic Sea harbour porpoise populations: Status and conservation needs derived from recent survey results","volume":"495","year":"2014","journal-title":"Mar. Ecol. Prog. Ser."},{"key":"2023080421595819300_c5","doi-asserted-by":"publisher","first-page":"1867","DOI":"10.1007\/s00265-010-0998-9","article-title":"Dynamic adjustment of biosonar intensity to habitat clutter in the bat Macrophyllum macrophyllum (Phyllostomidae","volume":"64","year":"2010","journal-title":"Behav. Ecol. Sociobiol."},{"key":"2023080421595819300_c6","doi-asserted-by":"publisher","first-page":"42","DOI":"10.1016\/j.biocon.2018.06.031","article-title":"Basin-scale distribution of harbour porpoises in the Baltic Sea provides basis for effective conservation actions","volume":"226","year":"2018","journal-title":"Biol. Conserv."},{"key":"2023080421595819300_c7","first-page":"443","article-title":"Noise affects porpoise click detections\u2014The magnitude of the effect depends on logger type and detection filter settings","volume":"28","year":"2018","journal-title":"Bioacoustics"},{"key":"2023080421595819300_c8","first-page":"1","article-title":"Click communication in harbour porpoises Phocoena phocoena","volume":"20","year":"2010","journal-title":"Bioacoustics"},{"key":"2023080421595819300_c9","doi-asserted-by":"publisher","first-page":"2514","DOI":"10.1121\/1.4816578","article-title":"Methodology and results of calibration of tonal click detectors for small odontocetes (C-PODs)","volume":"134","year":"2013","journal-title":"J. Acoust. Soc. Am."},{"key":"2023080421595819300_c10","doi-asserted-by":"publisher","first-page":"351","DOI":"10.1578\/AM.41.3.2015.351","article-title":"Exposing grey seals as horses and scientists as human","volume":"41","year":"2015","journal-title":"Aquat. Mamm."},{"key":"2023080421595819300_c11","doi-asserted-by":"publisher","first-page":"e59284","DOI":"10.1371\/journal.pone.0059284","article-title":"Clicking in shallow rivers: Short-range echolocation of irrawaddy and ganges river dolphins in a shallow, acoustically complex habitat","volume":"8","year":"2013","journal-title":"PLoS One"},{"key":"2023080421595819300_c12","doi-asserted-by":"publisher","first-page":"2493","DOI":"10.1121\/1.426951","article-title":"Target detection by an echolocating harbor porpoise (Phocoena phocoena","volume":"105","year":"1999","journal-title":"J. Acoust. Soc. Am."},{"key":"2023080421595819300_c13","doi-asserted-by":"publisher","first-page":"e0162069","DOI":"10.1371\/journal.pone.0162069","article-title":"Highly directional sonar beam of narwhals (Monodon monoceros) measured with a vertical 16 hydrophone array","volume":"11","year":"2016","journal-title":"PLoS One"},{"key":"2023080421595819300_c14","doi-asserted-by":"publisher","first-page":"e63763","DOI":"10.1371\/journal.pone.0063763","article-title":"Clicking in a killer whale habitat: Narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli","volume":"8","year":"2013","journal-title":"PLoS One"},{"key":"2023080421595819300_c15","doi-asserted-by":"publisher","first-page":"1783","DOI":"10.1121\/1.3075600","article-title":"Feeding at a high pitch: Source parameters of narrow band, high-frequency clicks from echolocating off-shore hourglass dolphins and coastal Hector's dolphins","volume":"125","year":"2009","journal-title":"J. Acoust. Soc. Am."},{"key":"2023080421595819300_c16","doi-asserted-by":"publisher","first-page":"1085","DOI":"10.1017\/S0025315408000416","article-title":"Harbour porpoise (Phocoena phocoena) static acoustic monitoring: Laboratory detection thresholds of T-PODs are reflected in field sensitivity","volume":"88","year":"2008","journal-title":"J. Mar. Biol. Assoc. UK"},{"key":"2023080421595819300_c17","doi-asserted-by":"publisher","first-page":"1251","DOI":"10.1111\/1365-2435.13073","article-title":"Continued source level reduction during attack in the low-amplitude bat Barbastella barbastellus prevents moth evasive flight","volume":"32","year":"2018","journal-title":"Funct. Ecol."},{"key":"2023080421595819300_c18","doi-asserted-by":"publisher","first-page":"287","DOI":"10.1111\/brv.12001","article-title":"Estimating animal population density using passive acoustics","volume":"88","year":"2013","journal-title":"Biol. Rev."},{"key":"2023080421595819300_c19","doi-asserted-by":"publisher","first-page":"863","DOI":"10.1121\/1.1918212","article-title":"Shallow-water transmission","volume":"34","year":"1962","journal-title":"J. Acoust. Soc. Am."},{"issue":"12","key":"2023080421595819300_c20","doi-asserted-by":"publisher","first-page":"2362","DOI":"10.1111\/2041-210X.13097","article-title":"Estimating effective detection area of static passive acoustic data loggers from playback experiments with cetacean vocalisations","volume":"9","year":"2018","journal-title":"Methods Ecol. Evol."},{"key":"2023080421595819300_c21","article-title":"Volume absorption and volume reverberation due to microbubbles and suspended particles in a ray-based sonar performance model","year":"2004"},{"key":"2023080421595819300_c22","doi-asserted-by":"publisher","first-page":"e90824","DOI":"10.1371\/journal.pone.0090824","article-title":"In-air evoked potential audiometry of grey seals (Halichoerus grypus) from the North and Baltic Seas","volume":"9","year":"2014","journal-title":"PLoS One"},{"key":"2023080421595819300_c23","doi-asserted-by":"publisher","first-page":"230","DOI":"10.1111\/j.1748-7692.2010.00379.x","article-title":"High-density areas for harbor porpoises (Phocoena phocoena) identified by satellite tracking","volume":"27","year":"2011","journal-title":"Mar. Mammal Sci."},{"key":"2023080421595819300_c24","first-page":"275","article-title":"Characteristics of echolocation signals used by a harbour porpoise (Phocoena phocoena) in a target detection experiment","volume":"28","year":"2002","journal-title":"Aquat. Mamm."},{"key":"2023080421595819300_c25","first-page":"343","article-title":"Structure of harbour porpoise (Phocoena phocoena) click train signals","volume-title":"The Biology of the Harbour Porpoise","author":"Read","year":"1997"},{"key":"2023080421595819300_c26","doi-asserted-by":"publisher","first-page":"823","DOI":"10.1242\/jeb.022137","article-title":"Echolocation by two foraging harbour porpoises (Phocoena phocoena","volume":"212","year":"2009","journal-title":"J. Exp. Biol."},{"key":"2023080421595819300_c27","doi-asserted-by":"publisher","first-page":"3385","DOI":"10.1242\/jeb.01786","article-title":"Spatial orientation in echolocating harbour porpoises (Phocoena phocoena)","volume":"208","year":"2005","journal-title":"J. Exp. Biol."},{"key":"2023080421595819300_c28","doi-asserted-by":"publisher","first-page":"56","DOI":"10.1242\/jeb.02618","article-title":"Echolocation signals of wild harbour porpoises, Phocoena phocoena","volume":"210","year":"2007","journal-title":"J. Exp. Biol."},{"key":"2023080421595819300_c29","doi-asserted-by":"publisher","first-page":"1441","DOI":"10.1016\/j.cub.2016.03.069","article-title":"Ultra-high foraging rates of harbor porpoises make them vulnerable to anthropogenic disturbance","volume":"26","year":"2016","journal-title":"Curr. Biol."}],"container-title":["The Journal of the Acoustical Society of America"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.aip.org\/asa\/jasa\/article-pdf\/148\/4\/EL382\/15348319\/el382_1_online.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/pubs.aip.org\/asa\/jasa\/article-pdf\/148\/4\/EL382\/15348319\/el382_1_online.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.aip.org\/asa\/jasa\/article-pdf\/148\/4\/EL382\/15348319\/el382_1_online.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,5,27]],"date-time":"2025-05-27T19:14:35Z","timestamp":1748373275000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.aip.org\/jasa\/article\/148\/4\/EL382\/997201\/No-need-to-shout-Harbor-porpoises-Phocoena"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,10,1]]},"references-count":29,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2020,10,1]]}},"URL":"https:\/\/doi.org\/10.1121\/10.0002347","relation":{},"ISSN":["0001-4966","1520-8524"],"issn-type":[{"value":"0001-4966","type":"print"},{"value":"1520-8524","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2020,10]]},"published":{"date-parts":[[2020,10,1]]}}}