Newsletter // Issue 3 // April 2013 // 



Introducing an enhanced DST magnetic - Increased memory size and battery life

Star-Oddi introduces a new and improved version of the DST magnetic. The memory size has been increased by 50%, up to 26,158 measurements per parameter and the battery life has been prolonged from 18 months to 3 years.

The DST magnetic is a small data logger / archival tag that measures and records earth's magnetic field strength (in 3-D), tilt (in 3-D), acceleration, temperature and depth. It has a standard temperature range of -1°C to +40°C and can be pressure calibrated down to 3000m.  

The DST magnetic is ideal for geolocation analysis of fish and for monitoring movements of buoys and underwater gear. When used on gear, it is available with an adjustable housing that keeps the logger in a fixed position inside and allows for more flexible mounting options as well as protecting the logger 

For more information, please see the DST magnetic product site.

                   


12 tags already recaptured from a recent lumpfish tagging

The lumpfish is an important commercial species in Iceland. Juvenile lumpfish emerge from egg clutches in the shallow rocky coastal zone and then spend most of the summer in shallow waters. At the end of the summer the juveniles leave the coastal zone. Where lumpfish go, how fast they grow and their behavior after they leave the coastal zone is largely unknown.

Research at the Icelandic Marine Research Institute, in conjunction with BioPol Ehf and MatÝs which has been generously funded by the Fisheries Research Fund, has focused on studying the biology and genetics of lumpfish. As part of this project, 100 DST tags from Star-Oddi were purchased. As mature male lumpfish are smaller than mature female lumpfish, DST-Milli tags were purchased for the females and DST-Micro were purchased for the males. Additionally, the lumpfish sex ratio in the fishery and the Iceland Groundfish Survey is skewed so 85 DST-Milli tags and 15 DST-Micro tags were purchased. 85 female lumpfish and seven male have been tagged with Star-Oddi data storage tags recording temperature and pressure (which can be used to calculate depth).

Twenty females were tagged aboard R/V Bjarni SŠmundsson during the Iceland Groundfish Survey in March 2013 and the rest of the fish were tagged during the 2013 cod and the lumpfish gillnet fishery. The external DSTs were placed just below the dorsal hump on the fish and were fastened with wires through the skin and muscle tissue. Fish were also tagged with a plastic disk tag.

To date six females tagged during the IGFS and five females and one male tagged in the gillnet fishery have been recaptured. All of the fish showed considerable vertical movements. Fish tended to occupy deeper waters during the day time than at night. Interesting, one of the specimens spent considerable amounts of time at or near the surface during the day and night. Initial analysis indicates that the species occasionally spends considerable time resting on the bottom and also traveling at the surface.

 

 

Star-Oddi Online

Now you can find product updates, video tutorials and general information about Star-Oddi on:

DST CTD- the smallest conductivity, temperature and depth logger on the market


The small and cost effective CTD has been much welcomed by marine and fisheries scientists around the world.

The DST CTD is custom calibrated and the three conductivity ranges that Star-Oddi offers are 0.3 to 5 mS/cm, 3 to 37 mS/cm and 13 to 50 mS/cm. The temperature range is -1 to +40°C (30°F to 95°F) and the logger is available with various depth ranges, maximum down to 2000m. The DST CTD has a memory size of 87,217 measurements per sensor. Optionally the depth measurements can be skipped (DST CT) increasing the memory up to 130,826 measurements per sensor.

For more information, please see the DST CTD product site.
 


Data Storage Tags - DSTs

Star-Oddi has been manufacturing and developing DSTs since 1993. The data loggers are used for various studies, such as fish tagging, fishing gear studies and oceanography. You can find our whole product range here. The following sensors are available:


Fun fact: Voting at the oldest parliament in the world

On April 27th Icelanders will go to the polls and vote at the parliamentary elections. This year voters can choose between 15 different political parties, but civic engagement has risen significantly in Iceland since the financial crash in 2008.

Iceland boasts of the oldest parliament in the world. It was founded in 930 at Thingvellir in the south-west part of Iceland. The parliament, or "Al■ingi" as it is known in Iceland, continued its sessions even when Iceland united with Norway in 1262, but it was suspended in 1799 and then restored in 1844 when Iceland was still under the rule of the Danish crown.

Today the parliament is situated in the city centre of Reykjavik, it holds 63 seats. When it was founded in 930, only free men could participate, women did not gain suffrage until 1915. Political participation has always been high in Iceland, around 85%.   
 


 




Star-Oddi | Skeidaras 12 | 210 Gardabaer | Iceland | Tel: +354 533 6060 | Fax: +354 533 6069 | Contact  | www.star-oddi.com