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Book Status of Atlantic Salmon Salmo Salar in the Tabusintac River in 1999

Download or read book Status of Atlantic Salmon Salmo Salar in the Tabusintac River in 1999 written by Scott G. Douglas and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Stock Status of Atlantic Salmon Salmo Salar in the Tabusintac River in 1999

Download or read book Stock Status of Atlantic Salmon Salmo Salar in the Tabusintac River in 1999 written by S. G. Douglas and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Esgenoopetitj First Nation and the recreational angling community harvested Atlantic salmon from the Tabusintac River in 1999. First Nation food fishery removals of small salmon and large salmon were 28% and 6% of the respective communal allocations. A telephone creel survey conducted for public water angling during the 1999 season, indicated that total bright salmon catches increased from 1998 but remain only 45% of the previous five year mean. Total catches in 1999 for both large and small salmon on leased water were 23% higher than in 1998 but 160% higher than the four year mean. Total returns of large salmon to the Tabusintac River in 1999 were estimated from a mark-recapture experiment using tags applied at an estuary trapnet and the catches and recaptures from an upstream trapnet. Most probable total returns of large salmon, generated by a Bayes algorithm, were estimated to be 900 fish. Total returns of small salmon were calculated from the estimate of large salmon returns and the combined capture efficiencies for large salmon observed at both trapnets in the current year. Total returns of small salmon were estimated to be 800n fish. After accounting for removals, large salmon spawning escapement was estimated to be 851 fish, which alone accounts for 237% of the conservation requirement. Small salmon spawning escapement was estimated to be 704 fish. Total estimated egg deposition was 250% of the conservation requirement. Egg deposition has exceeded the requirement in all assessed years and is expected to do so in 2000. Increased Atlantic salmon juvenile densities in 1999 are encouraging for the future of the resource.

Book Stock Status of Atlantic Salmon Salmo Salar in the Buctouche River and Relative Juvenile Abundance in Other Southeastern New Brunswick Rivers in 1999

Download or read book Stock Status of Atlantic Salmon Salmo Salar in the Buctouche River and Relative Juvenile Abundance in Other Southeastern New Brunswick Rivers in 1999 written by Gary Atkinson and published by . This book was released on 2000 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to egg depositions well below the conservation requirement in recent years, the angling season was closed and there was no First nation allocation of salmon on the Buctouche River as of 1998. Salmon returns in 1999 were calculated from catches and known efficiency of an estuary trapnet operated by Buctouche First Nation. Total large salmon returns were estimated at 244 and total small salmon returns at 114, with respective spawning escapements of 244 and 111. Total egg deposition was estimated at 102% of the conservation requirement. This represents a tripling of the level in 1998, and the first instance in seven assessed years when the requirement may have been met. Juvenile densities on the Buctouche were well below optimum, especially for fry, confirming the low egg deposition observed in 1998. Results from a juvenile survey of four other southeastern New Brunswick rivers indicated that the level of spawning success has been variable and asynchronous. The variability, unpredictability and generally depressed status observed in the Buctouche stock appears to be characteristic of most rivers in the area, and a valid basis for the general management of stocks. The forecast for the Buctouche in 2000 is five year mean of total returns, which is 167 large and 106 for small salmon. With all retention fisheries closed there is only a 3% probability that the egg conservation requirement will be met in 2000.