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Sven Gastauer
Cooperative Research Centre
OceanographyTarget strengthFisheryFishingPelagic zone
19Publications
4H-index
43Citations
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Publications 20
Newest
#1Julie Salvetat (UFRPE: Universidade Federal Rural de Pernambuco)
#2Anne Lebourges-Dhaussy ('IFREMER': IFREMER)H-Index: 9
Last. Arnaud Bertrand (UFPE: Federal University of Pernambuco)H-Index: 1
view all 7 authors...
Triggerfish are widely distributed in tropical waters where they play an important ecological role. The black triggerfish Melichthys niger may be the dominant species around oceanic tropical islands, whereas pelagic triggerfish, such as the ocean triggerfish Canthidermis sufflamen, can assemble around fish aggregating devices (FADs) where they are a common bycatch of tuna fisheries. In this study we combined acoustic and optical recordings to provide the first in situ target strength (TS) measur...
Source
#1Sven Gastauer (CRCs: Cooperative Research Centre)H-Index: 4
#2Dezhang Chu (NOAA: National Oceanic and Atmospheric Administration)H-Index: 4
Last. Martin J. Cox (AAD: Australian Antarctic Division)H-Index: 11
view all 3 authors...
Source
#1Sven Gastauer (CRCs: Cooperative Research Centre)H-Index: 4
#2Dezhang Chu (NOAA: National Oceanic and Atmospheric Administration)H-Index: 4
Last. Martin J. Cox (AAD: Australian Antarctic Division)H-Index: 11
view all 3 authors...
A thorough understanding of the scattering characteristics of marine organisms is a prerequisite for robust quantitative fisheries acoustic data processing or interpretation. Target strength models, such as the distorted wave Born approximation (DWBA) can be used to improve the understanding of field recordings of weakly scattering targets. With acoustic methods now being used by a wide audience, allowing access to such models becomes a necessity. To ease access to the DWBA model, an r package (...
1 CitationsSource
#1Rowan TrebilcoH-Index: 12
#2A WaltersH-Index: 3
Last. Andrew ConstableH-Index: 15
view all 7 authors...
From January to March 2016, the Antarctic Climateand Ecosystems Corporate Research Centre (ACECRC) led an integrated ecosystem survey voyage onthe Southern Kerguelen Axis (the region spanningBANZARE Bank and the Princess Elizabeth Trough(PET), south toward the Antarctic continental shelfand Prydz Bay). The voyage track spanned 8 850 km,comprised of eight sampling transects, which weredesigned to encompass major environmental transitionsin the area (Figure 1). Overarching goals of thisvoyage were...
1 Citations
#1Sven Gastauer (Curtin University)H-Index: 4
#2Ben Scoulding (Hobart Corporation)H-Index: 4
Last. Miles Parsons (Curtin University)H-Index: 8
view all 3 authors...
Ongoing monitoring of complex, mixed species environments is a challenging task. In this study, the potential of acoustic and catch data collected aboard a commercial fishing vessel, in combination with geostatistical variance estimates, are explored as a means to derive information on the distribution and abundance of key species groups within selected fishing regions. The FV Carolina M, a trap fishing vessel which operates in waters off Broome, Western Australia, in the Northern Demersal Scale...
1 CitationsSource
#1Sven Gastauer (Curtin University)H-Index: 4
#2Ben Scoulding (Hobart Corporation)H-Index: 4
Last. Miles Parsons (Curtin University)H-Index: 8
view all 3 authors...
Goldband snapper (Pristipomoides multidens) is an ecologically and economically important species in the Northern Demersal Scalefish Fishery (NDSF). The Carolina M, a trap fishing vessel operating in the NDSF, was equipped with Simrad ES70 echosounders, operated at 38 and 120 kHz. In 2014 acoustic data, in combination with optical recordings of the catch, were opportunistically collected during routine fishing operations. In December 2014 pure, low density goldband snapper schools were observed ...
5 CitationsSource
#1Sven Gastauer (Curtin University)H-Index: 4
#2Ben Scoulding (Hobart Corporation)H-Index: 4
Last. Miles Parsons (Curtin University)H-Index: 8
view all 3 authors...
Fisheries acoustics is now a standard tool for monitoring marine organisms. Another use of active-acoustics techniques is the potential to qualitatively describe fish school and seafloor characteristics or the distribution of fish density hotspots. Here, we use a geostatistical approach to describe the distribution of acoustic density hotspots within three fishing regions of the Northern Demersal Scalefish Fishery in Western Australia. This revealed a patchy distribution of hotspots within the t...
1 CitationsSource
#1Ben Scoulding (Hobart Corporation)H-Index: 4
#2Sven Gastauer (Curtin University)H-Index: 4
Last. Paul G. Fernandes (Aberd.: University of Aberdeen)H-Index: 23
view all 6 authors...
Atlantic mackerel Scomber scombrus is a small pelagic, migratory fish which supports commercial fisheries. These fish school and are detectable using echosounders, yet fishery-independent estimates of their abundance in the North East Atlantic do not consider acoustic data. Accurate estimates of mean target strength (TS) are presently limiting echo-integration surveys from providing useful estimates of Atlantic mackerel abundance and distribution. This study provides TS estimates for in situ mac...
4 CitationsSource
#1Sven GastauerH-Index: 4
In order to progress towards a more ecosystem based approach in fisheries management (EBFM), it is important to develop holistic monitoring protocols. Fisheries acoustics is recognised as one of the most promising marine monitoring tools, to be used in conjunction with more traditional sampling methods, such as trawls or other biological sampling methods, to fulfil the data needs of EBFM. To work towards an improved understanding of the ecosystem, there is a need for large scale sampling program...
#1Sven Gastauer (Curtin University)H-Index: 4
Last. Ben ScouldingH-Index: 4
view all 13 authors...
Abstract Northern blue whiting is a small abundant pelagic gadoid that is widely distributed in the northeast Atlantic and one of the most commercially valuable species west of the British Isles and Ireland. Over the last two decades the northeast Atlantic stock has undergone dramatic changes in abundance. The stock size decreased dramatically from 2007 to 2011, but has since shown signs of recovery. Changes in recruitment levels have occurred almost simultaneously with unusual changes in the no...
6 CitationsSource
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