Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Records 1 - 7 / 7

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    Humpback and minke whale acoustic presence with reference to fish sounds and ambient noise levels at Saba Bank, Caribbean Windward Dutch Islands
    Risch, D. ; Haan, D. de - \ 2016
    IMARES (Report / IMARES C067/16) - 22
    megaptera novaeangliae - whales - acoustics - sounds - netherlands antilles - monitoring - saba - megaptera novaeangliae - walvissen - geluidsleer - geluiden - nederlandse antillen - monitoring - saba
    The Antillean Island chain is a known breeding and calving ground for North Atlantic humpback whales (Megaptera novaeangliae). However, while most research efforts for this species have focused on the largest aggregation of whales, located on Silver Bank, off the northern coast of the Dominican Republic, there are still significant knowledge gaps with respect to humpback whale movements along the Antillean Island chain. Even less is known about the spatio-temporal distribution of other marine mammal and fish species in the region. This report summarizes analysis results of acoustic data (10-8000 Hz effective analysis bandwidth recorded at a 25% duty cycle), recorded on the north east of Saba Bank from October 2011 to April 2012. The results show the consistent presence of humpback whales in the vicinity of Saba Bank during their winter breeding season, occasional presence of minke whales and the presence of sound producing fish assemblages. Humpback whale song occurred from the end of December to the end of the recording period in April. From February to April humpback whale song was recorded on more than 89 % of all recording days, though it occurred most frequently in March. All recording days in March showed song presence, with an average of 8.5 ± 2.8 (mean ± SE) hours of recorded song per day. In contrast, for minke whale (Balaenoptera acutorostrata) 48 pulse trains (n = 32) were detected less frequently between February to April 2012. A variety of unidentified fish sounds were present throughout the recordings. Although the occurrence of these sounds was not quantified, notable fish choruses (e.g. grouper spp. Epinephelinae) consisting of one to two distinct pulsed calls in the frequency range of 100 - 600 Hz were documented from October to December 2011 in particular. The results of this pilot project highlight the feasibility of using passive acoustic monitoring (PAM) to explore year-round marine mammal and fish presence and distribution in otherwise understudied and remote field sites.
    Blue whale sightings in Antarctica west of the Greenwich meridian, Januart 2015
    Geelhoed, S.C.V. ; Feij, B. ; Franeker, J.A. van; Herr, H. ; Janinhoff, N. ; McKay, S.J. ; Muller, S. ; Thomisch, K. ; Verdaat, J.P. ; Viquerat, S. - \ 2015
    [s.l.] : International Whaling Commission - 9
    whales - surveying - observation - cetacea - antarctica - walvissen - karteren - observatie - cetacea - antarctica
    During the RV Polarstern PS 89 (ANT-XXX/2) expedition from Cape Town to Atka Bay and back, 20 sightings of 26 individual blue whales (Balaenoptera musculus) were recorded in Antarctic waters west of the Greenwich Meridian between 16-20 January 2015. These observations suggest a more westerly extension of a reported hot spot between the Greenwich Meridian and 20°E.
    Monitoring cetacean occurrence in coastal waters of the Caribbean Netherlands (Saba, St. Eustatius & Bonaire) using port sampling
    Scheidat, M. ; Boman, E. ; Davaasuren, N. ; Geelhoed, S.C.V. ; Graaf, M. de - \ 2015
    IJmuiden : IMARES (Report / IMARES Wageningen UR C038/15) - 36
    kustgebieden - walvissen - dolfijnen - monitoring - caribische eilanden - coastal areas - whales - dolphins - monitoring - caribbean islands
    Knowledge on the density, distribution and occurrence of whales and dolphins in the Caribbean Netherlands is sparse. This knowledge is needed as basic input for conservation and management of cetaceans in the area. Especially in the long term, dedicated data is needed to provide a base-line for monitoring the effect of policy decisions, such as a proposed implementation of a whale sanctuary.
    Assessment of basic audiometric functions in killer whales (Orcinus orca) at Loro Parque, Tenerife, Spain
    Lucke, K. ; Finneran, J.J. ; Houser, D.S. - \ 2013
    Den Helder : IMARES (Rapport / IMARES Wageningen UR C045/13) - 15
    whales - hearing impairment - electrophysiology - hearing - walvissen - gehoorvermindering - elektrofysiologie - gehoor
    Onderzoek naar de affecten van de aanleg van damwanden en grondverdichting op tandwalvissen in het Dolfinarium Harderwijk
    Haan, D. de - \ 2013
    IJmuiden : IMARES (Report / IMARES Wageningen UR C020/13) - 62
    dammen - uitrusting - zeezoogdieren - dierentuindieren - simulatie - diergedrag - dierenwelzijn - geluiden - veluwe - walvissen - oscillatie - dams - equipment - marine mammals - zoo animals - simulation - animal behaviour - animal welfare - sounds - veluwe - whales - oscillation
    Voor het vaststellen van de effecten van de aanleg van damwandinstallaties en grondverdichting als onderdelen van het grootschalig bouwplan Waterfront Harderwijk van de gemeente Harderwijk werden op vijf verschillende locaties van het bouwplan installaties gesimuleerd en de geluidseffecten daarvan in vier verschillende bassins op het terrein van het dolfinarium simultaan gemeten. Het onderzoek naar de effecten van het trilgeluid was beperkt tot de bassins waar bruinvissen en tuimelaars werden gehouden. Omdat er tijdens de proeven sterke reacties van haaien en roggen in het roggenbasin werden waargenomen, zijn in dit rapport enkele mitigerende maatregelen voor deze diersoorten opgenomen.
    Short ID sheet whales and dolphins Dutch Caribbean
    Scheidat, M. ; Geelhoed, S.C.V. - \ 2012
    IJmuiden : IMARES (Report / IMARES Wageningen UR C022/14) - 8
    walvissen - dolfijnen - identificatie - dieridentificatie - caribische zee - whales - dolphins - identification - animal identification - caribbean sea
    Identification sheet whales and dolphins Dutch Caribbean.
    De walvisvaart
    Hildebrandt, A.G.U. - \ 1964
    's-Gravenhage : [s.n.] - 4
    dolfijnen - walvissen - dolphins - whales
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