{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T07:34:40Z","timestamp":1768721680052,"version":"3.49.0"},"reference-count":22,"publisher":"Springer Science and Business Media LLC","issue":"4","license":[{"start":{"date-parts":[[1987,6,1]],"date-time":"1987-06-01T00:00:00Z","timestamp":549504000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polar Biol"],"published-print":{"date-parts":[[1987,6]]},"DOI":"10.1007\/bf00287419","type":"journal-article","created":{"date-parts":[[2004,11,12]],"date-time":"2004-11-12T00:10:02Z","timestamp":1100218202000},"page":"231-235","source":"Crossref","is-referenced-by-count":56,"title":["Density- and sound speed contrasts in sub-Arctic zooplankton"],"prefix":"10.1007","volume":"7","author":[{"given":"Johannes W.","family":"K\ufffdgeler","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stig","family":"Falk-Petersen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\ufffdge","family":"Kristensen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fritz","family":"Pettersen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John","family":"Dalen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","reference":[{"key":"CR1","doi-asserted-by":"crossref","first-page":"426","DOI":"10.1121\/1.1906621","volume":"22","author":"VC Anderson","year":"1950","unstructured":"Anderson VC (1950) Soundscattering from a fluid sphere. J Acoust Soc Am 22:426?431","journal-title":"J Acoust Soc Am"},{"key":"CR2","first-page":"811","volume":"18","author":"P Beamish","year":"1971","unstructured":"Beamish P (1971) Quantitative measurements of acoustic scattering from zooplanktic organisms. Deep-Sea Res 18:811?822","journal-title":"Deep-Sea Res"},{"key":"CR3","first-page":"105","volume-title":"Sample design, in zooplankton sampling","author":"RM Cassie","year":"1968","unstructured":"Cassie RM (1968) Sample design, in zooplankton sampling. Tranter DJ, Fraser JH (eds) Unesco Press, Paris, pp 105?121"},{"key":"CR4","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1080\/00364827.1981.10414517","volume":"66","author":"H CHR Eilertsen","year":"1981","unstructured":"Eilertsen H CHR, Falk-Petersen S, Hopkins CCE, Tande K (1981) Ecological investigations on the plankton community of Balsfjorden, Northern Norway: the study area, topography and environmental parameters. Sarsia 66:25?34","journal-title":"Sarsia"},{"key":"CR5","doi-asserted-by":"crossref","first-page":"103","DOI":"10.1016\/0022-0981(81)90065-4","volume":"49","author":"S Falk-Petersen","year":"1981","unstructured":"Falk-Petersen S (1981) Ecological investigations on the plankton community of Balsfjorden, Northern Norway: Seasonal changes in body weight and the main biochemical composition of Thysanoessa inermis (Kr\u00f8yer), T. raschii (M. Sars) and Meganyctiphanes norvegica (M. Sars) in relation to environmental factors. J Exp Mar Biol Ecol 49:103?120","journal-title":"J Exp Mar Biol Ecol"},{"key":"CR6","doi-asserted-by":"crossref","first-page":"209","DOI":"10.1016\/0022-0981(81)90158-1","volume":"54","author":"S Falk-Petersen","year":"1981","unstructured":"Falk-Petersen S, Gatten RR, Sargent JR, Hopkins CCE (1981) Ecological investigations on the zooplankton community of Balsfjorden, Northern Norway: Seasonal changes in the lipid class composition of Meganyctiphanes norvegica (M. Sars), Thysanoessa raschii (M. Sars) and T. inermis (Kr\u00f8yer). J Exp Mar Biol Ecol 54:209?224","journal-title":"J Exp Mar Biol Ecol"},{"key":"CR7","first-page":"191","volume":"5","author":"S Falk-Petersen","year":"1981","unstructured":"Falk-Petersen S, Hopkins CCE (1981) Zooplankton sound scattering layers in North Norwegian fjords. Interactions between fish and krill shoals in a winter situation in Ullsfjorden and \u00d8ksfjorden. Kieler Meeresforsch Sonderh 5:191?201","journal-title":"Kieler Meeresforsch Sonderh"},{"key":"CR8","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1080\/00364827.1985.10420620","volume":"70","author":"S Falk-Petersen","year":"1985","unstructured":"Falk-Petersen S, Kristensen \u00c5 (1985) Acoustic assessment of krill stocks in Ullsfjorden, North Norway. Sarsia 70:83?90","journal-title":"Sarsia"},{"key":"CR9","doi-asserted-by":"crossref","first-page":"44","DOI":"10.1121\/1.381503","volume":"62","author":"CF Greenlaw","year":"1977","unstructured":"Greenlaw CF (1977) Backscattering spectra of preserved zooplankton. J Acoust Soc Am 62:44?52","journal-title":"J Acoust Soc Am"},{"key":"CR10","doi-asserted-by":"crossref","first-page":"226","DOI":"10.4319\/lo.1979.24.2.0226","volume":"242","author":"CF Greenlaw","year":"1979","unstructured":"Greenlaw CF (1979) Acoustical estimation of zooplankton populations. Limnol Oceanogr 242:226?242","journal-title":"Limnol Oceanogr"},{"key":"CR11","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1121\/1.381326","volume":"61","author":"RK Johnson","year":"1977","unstructured":"Johnson RK (1977) Sound scattering from a fluid sphere revisited. J Acoust Soc Am 61:375?377","journal-title":"J Acoust Soc Am"},{"key":"CR12","unstructured":"Kils U (1979a) Aspects of physiological ecology of Euphausia superba. Int Counc Explor Sea Coop Res Rep Ser B 1979\/L:3"},{"key":"CR13","first-page":"207","volume":"27","author":"U Kils","year":"1979","unstructured":"Kils U (1979b) Preliminary data on volume, density and cross section area of Antarctic krill, Euphausia superba. Meeresforschung 27:207?209","journal-title":"Meeresforschung"},{"key":"CR14","unstructured":"Kristensen \u00c5 (1983) Acoustic classification of zooplankton. Dr. Ing Thesis\/ELAB Rep STF44 A83 187. University of Trondheim, Norway"},{"key":"CR15","doi-asserted-by":"crossref","unstructured":"Kristensen \u00c5, Dalen J (1986) Acoustic estimation of abundance and size distribution of zooplankton. J Acoust Soc Am (in press)","DOI":"10.1121\/1.394055"},{"key":"CR16","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S0065-2881(08)60471-X","volume":"7","author":"J Mauchline","year":"1969","unstructured":"Mauchline J, Fisher LR (1969) The biology of euphausiids. Adv Mar Biol 7:1?454","journal-title":"Adv Mar Biol"},{"key":"CR17","first-page":"3","volume":"43","author":"N Payne","year":"1964","unstructured":"Payne N, Stephenson CE (1964) Measuring the density of polyolefins. An improved gradient column. Mat Rep Standards 43:3?7","journal-title":"Mat Rep Standards"},{"key":"CR18","doi-asserted-by":"crossref","first-page":"687","DOI":"10.1016\/0198-0149(79)90041-4","volume":"26","author":"RL Piper","year":"1979","unstructured":"Piper RL (1979) Euphausiids distribution and biomass determined acoustically at 102 kHz. Deep-Sea Res 26:687?702","journal-title":"Deep-Sea Res"},{"key":"CR19","doi-asserted-by":"crossref","first-page":"745","DOI":"10.2331\/suisan.45.745","volume":"54","author":"M Suzuki","year":"1979","unstructured":"Suzuki M (1979) Thermal characteristics of the Antarctic krill (Euphausia superba). Bull Japn Soc Sci Fish 54:745?751","journal-title":"Bull Japn Soc Sci Fish"},{"key":"CR20","doi-asserted-by":"crossref","first-page":"693","DOI":"10.1139\/f80-087","volume":"37","author":"DD Sameoto","year":"1980","unstructured":"Sameoto DD (1980) Quantitative measurements of euphausiids using a 120 kHz sounder and their in situ orientation. Can J Fish Aquat Sci 37:693?702","journal-title":"Can J Fish Aquat Sci"},{"key":"CR21","first-page":"1","volume":"70","author":"OH Saelen","year":"1950","unstructured":"Saelen OH (1950) The hydrography of some fjords in North Norway. Troms\u00f8 Mus \u00c5rsh 70:1?93","journal-title":"Troms\u00f8 Mus \u00c5rsh"},{"key":"CR22","first-page":"77","volume-title":"Zooplankton sampling","author":"M Vannucci","year":"1968","unstructured":"Vannucci M (1968) Loss of organisms through the meshes. In: Tranter DJ, Fraser JH (eds) Zooplankton sampling. Unesco Press, Paris, pp 77?86"}],"container-title":["Polar Biology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/BF00287419.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/article\/10.1007\/BF00287419\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/BF00287419","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,4,8]],"date-time":"2019-04-08T17:13:31Z","timestamp":1554743611000},"score":1,"resource":{"primary":{"URL":"http:\/\/link.springer.com\/10.1007\/BF00287419"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1987,6]]},"references-count":22,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1987,6]]}},"alternative-id":["BF00287419"],"URL":"https:\/\/doi.org\/10.1007\/bf00287419","relation":{},"ISSN":["0722-4060","1432-2056"],"issn-type":[{"value":"0722-4060","type":"print"},{"value":"1432-2056","type":"electronic"}],"subject":[],"published":{"date-parts":[[1987,6]]}}}