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CYR, C., H. BOUCHARD, S. DUBÉ, 2010. Compte rendu de la réunion du processus consultatif scientifique de la région du Québec portant sur lévaluation de la qualité de lhabitat et de son utilisation par le chevalier cuivré - partie 2 ; Proceedings of the Quebec Region Science Advisory Process on the Assessment of Habitat Quality and Habitat Use by Copper Redhorse – part 2. MPO, Secrétariat canadien de consultation scientifique, Série des comptes rendus ; DFO, Canadian Science Advisory Secretariat, Proceedings Series, 2010/048, 20 p .
BOUCHARD, H., C. CYR, M.-J. AUCLAIR, 2009. Utilisation de lhabitat par le chevalier cuivré et quantification de la qualité de lhabitat partie 1, du 17 au 18 mars 2009, Hôtel Gouverneur, Île Charron, Montréal, Québec ; Habitat Use of Copper Redhorse and quantifying habitat quality part 1 March 17-18, 2009, Ile Charron, Hotel Gouverneur, Montreal, Quebec. MPO, Secrétariat canadien de consultation scientifique, Série des comptes rendus ; DFO, Canadian Science Advisory Secretariat, Proceedings Series, 2009/030, 26 p .
Scientists from Fisheries and Oceans Canada (DFO) and from the Ministère des Ressources naturelles et de la Faune du Québec (MRNF) and the Ministère du Développement durable, de lEnvironnement et des Parcs (MDDEP) met on March 17th and 18th, 2009 to review the available information on the copper redhorse habitat. The meetings objective was to assess the copper redhorse habitat use and to determine the quality of this habitat. A second workshop will take place in the winter of 2010 to complete the work. The scientific information presented during the meetings will help in drafting the science advice for identifying this species' critical habitat henceforth listed as an endangered species in the Species at Risk Act (SARA). A summary of the different federal laws and guidelines that regulate the identification and protection of the copper redhorse critical habitat was first presented to the participants. The MRNF then presented more technical presentations on the principal characteristics of the copper redhorse: distribution, abundance, status and biology. Information updates were provided concerning the copper redhorse habitat used at various stages of development and thus certain characteristics or important sites were identified in order to protect the habitat. The two known spawning grounds (Chambly Rapids Archipelago and the area downstream from the St. Ours dam) on the Richelieu River should be protected as well as the feeding and rearing areas located in the river corridor between Montreal and Sorel. The importance of maintaining a free passage between the St. Lawrence and the spawning sites in the Richelieu River was also mentioned. The grass beds along the shore in shallow water areas, in particular the left shore of the Richelieu River and around the Jeannotte and Aux Cerfs Islands in the Richelieu River, were identified as key copper redhorse nursery areas (rearing, feeding, shelter). On the other hand, it was mentioned that knowledge on immature copper redhorse was very fragmentary, limited to historical captures throughout the species distribution range. Modelling results from the adult copper redhorse occurrence site characteristics provided a first look at the species potential habitat. Additional analyses will be conducted over the next few months and will be presented at a future workshop. Finally, it was noted that the copper redhorse occurs in waterways located among the most densely populated areas in Quebec and that the deterioration and fragmentation of its habitat represented the primary threats to its recovery.
SAVARD, L., H. BOUCHARD, 2004. État des stocks de crevette (Pandalus borealis) de l'estuaire et du golfe du Saint-Laurent en 2003 ; Estuary and Gulf of St. Lawrence shrimp (Pandalus borealis) stock status in 2003. MPO, Secrétariat canadien de consultation scientifique, Document de recherche ; DFO, Canadian Science Advisory Secretariat, Research Document, 2004/091, 62 p .
In 2003, all the indicators of abundance and of biomass of shrimp available to the fishery as well as the indicator of success of the fishery were positive. However, the indicators of size of females available for reproduction and to the fishery remained negative. The catch per unit of effort of the commercial fishery was higher than the 1990-1999 mean but the mean size of spawning females was still low. The research survey indices were very high, well above the 1990-1999 mean. The exploitation rate index decreased noticeably in all areas, reaching values lower than the 1990-1999 mean. In 2004, the fishery will be sustained by the females of the abundant 1997 year class and, to a lesser extent, by those of the 1998 year class. Moreover, the 1999 year class (very abundant in 2003) should recruit to the female component in 2004. The mean size of spawning females is not likely to increase significantly in 2004. Projections made for 2004 indicate that the abundance and biomass available to the fishery as well as the fishing success should be higher than what they have been since 2001. This positive change in the stock status justifies an adjustment of the TACs in order to take advantage of the high abundance of the 1997 and 1999 year classes, which will sustain the fishery in 2004 and 2005.
SAVARD, L., H. BOUCHARD, P.COUILLARD, 2003. Revue de la pêche à la crevette nordique (Pandalus borealis) dans l'estuaire et le golfe du Saint-Laurent pour la période 1965-2000. Rapp. tech. can. sci. halieut. aquat., 2465, 143 p .
The northern shrimp (Pandalus borealis) fishery began in the Gulf of St. Lawrence in 1965. Catches increased progressively to reach about 26,000 tons in 2000, with a landed value of $40 million. The shrimp fishery is carried out by trawlers; all skippers must fill out a logbook and indicate the fishing location, the number of hours trawled, and an estimate of the catch volume. These fishery data constitute an invaluable source of information about the development of the fishery, the exploration of the fishing grounds, and the success of commercial operations. This report aims firstly at reviewing the various management measures put in place during the 1980s and 1990s and secondly at describing the development of commercial activities. An examination of the spatial, seasonal and annual patterns of catches, fishing effort, and catch rates clearly shows the development of commercial operations in relation to the acquisition of knowledge by fishing crews and to fluctuations in resource abundance.
SAVARD, L., H. BOUCHARD, H. BOURDAGES, 2002. Évaluation des stocks de crevette (Pandalus Borealis) de l'estuaire et du golfe du Saint-Laurent pour la période 1990-2001 ; Estuary and Gulf of St. Lawrence shrimp (Pandalus Borealis) stock assessment for the 1990-2001 period. MPO, Secrétariat canadien de consultation scientifique, Document de recherche ; DFO, Canadian Science Advisory Secretariat, Research Document, 2002/068, 90 p .
Overall, the research survey indices show that the shrimp biomass was very high in 2000 and diminished in 2001, moving closer to the mean observed during the 1990-1999 period. Abundance of females decreased in 2001 but is comparable to observations in 1998 and 1999. Not all individuals of the 1997 year-class appear to have changed sex in spring 2001: a certain proportion has remained male. Commercial catch rates were slightly down in the Sept-Îles and Anticosti areas in 2001, but still above the mean for 1990-1999. Exploitation rate indices rose, but are comparable to the mean for 1990-1999. The 2002 fishery will mainly involve the 1997 and 1998 year-classes. The 1997 year-class, which seemed very abundant in commercial and survey catches in 1999 and 2000, produced no substantial increase in commercial catch rates and biomass estimates in 2001. Many individuals remained male in 2001 and should be available to the fishery as females in 2002. However, those that changed sex in 2001 have produced smaller females. The 1998 year-class was weakly represented in the survey and commercial fishery catches, and so no substantial increase in the fishery and survey indices is expected in 2002. Males from the 1999 year-class were a strong presence in fishery and survey catches in 2001. However, they will not change sex and should not contribute to any significant increase in the size of the shrimp taken in 2002.
LAMBERT, J., H. BOUCHARD, L. SAVARD, 1998. État des populations de crevettes nordiques (Pandalus borealis) de l'estuaire et du golfe du Saint-Laurent (divisions 4RST de l'OPANO). MPO, Secrétariat canadien pour l'évaluation des stocks, Document de recherche, 98/102, 34 p .
Data from research surveys and commercial fishery for northern shrimp in the Gulf of St. Lawrence were analyzed and results are presented to show overall tendencies in the abundance of shrimp and the impact of harvest on the stocks. The abundance index for shrimp in the Gulf and Estuary has fluctuated since the 1980s. However, assessment results indicate that the populations were in good condition at the end of the 1997 fishing season. Fluctuations in abundance can be explained by the strength of the year-classes supporting the fishery. Thus, the high abundance indices of 1994, 1995, 1996 and 1997 are due to the contribution of the strong year-classes produced in the early 1990s. Shrimp in the size-class 19 to 21 mm that were hatched mainly in 1994, should reach sizes that are fully retained by trawls in 1998. This year-class, along with the strong 1993 year-class, should maintain catches at high levels in 1998.
GRÉGOIRE, F., R. MORNEAU, H. BOUCHARD, J. LANDRY, 1997. Analyse des captures de capelan (Mallotus villosus) associées aux programmes Pêcheur-Repères du capelan et de la crevette (Pandalus borealis). MPO, Secrétariat canadien pour l'évaluation des stocks, Document de recherche, 97/14, 30 p .
In 1996, 39 % to 63% of the catches made by the capelin fishermen from the Index-Fisherman program were not landed. The most important reasons cited for the discards were the small number of females in the catches and also their small size. The profile of the daily catches suggests a variable availability of the capelin to the fishery. The fishing season is short, just the time of the spawn because the market is directed to the ovigerous female. Fishermen from the shrimp Index program caught less capelin in 1996 than during the previous years. It has been suggested that the gradual movement of their fleet towards the south of the Gulf of St. Lawrence explains this reduction.
GRÉGOIRE, F., C. LÉVESQUE, H. BOUCHARD, 1996. La situation du capelan (Mallotus villosus) de l'estuaire et du golfe du Saint-Laurent en 1995. MPO, Pêches de l'Atlantique, Document de recherche, 96/54, 75 p .
Because of the fishery closure, the 1995 capelin landings for the Estuary and Gulf of St. Lawrence were only 152 t. More than 50 % (90 t) of these landings were fished in Division 4S only. A lateness in the beginning of the season is observed in unit areas 4Sw and 4Rc during the last years. During the same period of time, there is also a reduction in the capelin size which is expressed in fact by an increase in the number of capelins per kilogram. This value is also a selective criterion used by the Japanese market for the ovigerous female. The spatial distribution of the capelin catches made during the shrimps and groundfish survey of 1995 looks the same as the past distributions. Mean weight by set, as the frequency of occurrence for the past winter Gadus Atlantica surveys and Alfred Needler summer surveys show a decreasing trend. The highest mean weight by set is observed in Division 4S. The interpretation of these indices should be made with caution because they come from bottom trawls surveys which are not necessarily appropriate for a pelagic species like capelin. The monitoring of the most important spawning areas and acoustic surveys near these areas could be a more adequate way to calculate a capelin index of abundance.
SAVARD, L., H. BOUCHARD, 1995. Northern shrimp in the estuary and Gulf of St. Lawrence. Pages 100-122 in L. Savard (ed.). Status report on invertebrates in 1994 : crustaceans and molluscs on the Québec coast, northern shrimp and zooplankton in the estuary and Gulf of St. Lawrence. DFO (Can. Manuscr. Rep. Fish. Aquat. Sci., 2323) .
SAVARD, L., H. BOUCHARD, 1995. Crevette nordique de l'estuaire et du golfe du Saint-Laurent (zones de pêche 8, 9, 10 et 12). Pages 104-127 in L. Savard (éd.). Rapport sur l'état des invertébrés en 1994 : crustacés et mollusques des côtes du Québec, crevette nordique et zooplancton de l'estuaire et du golfe du Saint-Laurent. MPO (Rapp. manus. can. sci. halieut. aquat., 2323) .
GRÉGOIRE, F., S. HURTUBISE, D. ARCHAMBAULT, R. MORNEAU, H. BOUCHARD, 1995. Analyses des données de pêche et de recherche sur le capelan (Mallotus villosus) du golfe du Saint-Laurent. MPO, Pêches de l'Atlantique, Document de recherche, 95/55, 64 p .
Annual landings of capelin in Divisions 4RST remained stable and inferior to 2,000 t until 1977. The new market for ovigerous females is responsible for the recent increase. Landings increased to almost 10,000 t in 1978, 1979 and 1989 and have remained at over 6,000 t since then. During the last two years, the most significant subdivisions in terms of landings were 4Rc, 4Sw and 4Tp. Only two or three age groups dominate capelin catches by age in Division 4R. Also in this division, catches by length indicate a decrease in the size of male and female capelin caught over the last few years. Capelin bycatch during winter groundfish assessment surveys was especially significant in the Esquiman Channel. During summer surveys, capelin were caught all over the northern Gulf. However, greater concentrations were ovserved west and east of Anticosti Island and on the west coast of Newfoundland. At present, on account of limited resources, there are not sufficient data to carry out an assessment of capelin biomass in the Gulf. In the meantime, further study could be conducted on the capelin data obtained during annual groundfish and shrimp assessment surveys.
SAVARD, L., S. HURTUBISE, H. BOUCHARD, 1993. Évaluation des agrégations de crevettes nordiques (Pandalus borealis) du nord du golfe du Saint-Laurent (divisions 4RST de l'OPANO). MPO, Document de recherche sur les pêches dans l'Atlantique, 93/20, 41 p .
In 1992, the abundance of shrimp in the Northern Gulf of St. Lawrence returned to a level that seems comparable to that of the mid 1980s. The increase in the late 1980s was due to several successive years of good recruitment. Catch rates increased as these cohorts entered the fishery and changed sex to attain the sizes targeted by fishermen. Estimated fishery recruitment (male shrimp) in 1992 stands at the average that has been observed since 1982. In 1993 and subsequently, catch rates and abundance should stabilize or diminish in step with exploitation of the abundant cohorts.
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