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169
How do I find U.S. Census data?
Visit census.gov (http://census.gov/) to browse quality information current and historical facts and figures about Americas people, places, and economy. An additional tool offered by the U.S. Census Bureau, the data.census.gov (https://data.census.gov/) is a platform designed to help users access demographic and economic data digitally. The Census Academy (https://www.census.gov/data/academy.html) has many short tutorials for searching this website. For more information, consult the Census Bureau's FAQ (https://ask.census.gov/) , or schedule an appointment with an LSU Libraries Librarian here (https://lsu.libcal.com/appointments/caple) . The census on microfilm LSU owns is limited. The only states in this collection include: Alabama, Arkansas, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, Missouri, Pennsylvania, South Carolina, Tennessee, Texas, Virginia (and scattered census material for West Virginia). Information on other states may be located at the National Archives (http://www.archives.gov/research/start/index.html) in Washington D.C., the regional branches (http://www.archives.gov/locations/index.html) of the National Archives, as well as the Bluebonnet Regional Branch of the East Baton Rouge Parish Library (https://www.ebrpl.com/) . The collection of census material at LSU Libraries includes population schedules, agricultural census data, lists of manufactures, slave schedules, passenger lists for the port of New Orleans covering 1853-1899, social statistics, and scattered information concerning Defective, Dependent and Delinquent Classes. Other material that may be helpful for researching archives for genealogy information include Records of the Diocese of Louisiana and the "Floridas", New Orleans City Directories for years 1805-1945, New Orleans Christian Advocate concerning Marriage and Death Notices, Military Academy Letters, and Indian Affairs, just to name a few. If you would like to access any of these materials, contact libgovdocs@lsu.edu . Answered by: Kendall Caple

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2065111
Increase in catch efficiency using a semicircular ground gear in demersal trawls
In demersal trawls, ground gears are typically fixed to the fishing line to protect against the seabed and ensure seabed contact. Rockhoppers (RH) are among the most applied types of ground gears, especially in fisheries with rough seabed. However, their use has earlier been associated with substantial loss of catch under the fishing line and low catch efficiency. A new ground gear concept known as the semicircular spreading gear (SCSG) has been documented to reduce this loss, but the catch efficiency of RH and SCSG gears has never been directly compared in a systematic commercial scale trial. Using twin trawl configuration, the present study compared the catch efficiency of a RH gear and a SCSG gear with both size selective and blinded trawls. Eighteen hauls were conducted in the Barents Sea demersal trawl fishery where cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) are target species and redfish (Sebastes spp.) is an important commercial bycatch species. Using size selective trawls, the catches with the trawl equipped with the SCSG resulted in an average increase of 25.44 for cod, 32.04 for haddock and 64.34% for redfish compared to the trawl equipped with the RH gear. With blinded trawls, the increase changed to 41.35, 65.76 and 44.23% for cod, haddock and redfish, respectively. Despite the significant increase in catch efficiency observed for the trawl equipped with the SCSG, it also caught significantly more undersized fish than the trawl equipped with the RH gear. This increase illustrates the importance of size selective devices, especially if the use of the SCSG is widely adopted by industry.