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	Provedor de dados AgEcon (2) ArchiMer (2) Autor Bacher, Cedric (1) Blouin, David (1) Boucher, Robert W. (1) Casas, Sandra M. (1) Condrey, Richard E. (1) Dubois, Stanislas (1) Fleeger, John W. (1) Gauthier, Wayne M. (1) Gelpi, Carey (1) Gillespie, Jeffrey M. (1) Grippo, Mark A. (1) Hall, Larry M. (1) La Peyre, Jerome F. (1) La Peyre, Megan K. (1) Lavaud, Romain (1) Nipper, Weldon (1) Paudel, Krishna P. (1) Qushim, Berdikul (1) Venuto, Brad (1) Westra, John V. (1) Mais... Palavra-chave Louisiana (4) Farm Management (2) Best management practices (1) Biodiversity hotspot (1) Bioenergetics (1) Conservation (1) Continental shelf (1) Cow-Calf (1) DEB theory (1) Dairy (1) Entry (1) Estuary (1) Exit (1) Filtration (1) Growth (1) Gulf of Mexico (1) Hypoxia refuge (1) Livestock Production/Industries (1) Maintenance (1) Production Economics (1) Mais... Tipo do documento Conference Paper or Presentation (2) Text (2) Ano 2017 (1) 2011 (1) 2009 (1) 2007 (1) País France (2) United States (2) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Integrating the effects of salinity on the physiology of the eastern oyster, Crassostrea virginica, in the northern Gulf of Mexico through a Dynamic Energy Budget model ArchiMer Lavaud, Romain; La Peyre, Megan K.; Casas, Sandra M.; Bacher, Cedric; La Peyre, Jerome F.. We present a Dynamic Energy Budget (DEB) model for the eastern oyster, Crassostrea virginica, which enables the inclusion of salinity as a third environmental variable, on top of the standard foodr and temperature variables. Salinity changes have various effects on the physiology of oysters, potentially altering filtration and respiration rates, and ultimately impacting growth, reproduction and mortality. We tested different hypotheses as to how to include these effects in a DEB model for C. virginica. Specifically, we tested two potential mechanisms to explain changes in oyster shell growth (cm), tissue dry weight (g) and gonad dry weight (g) when salinity moves away from the ideal range: 1) a negative effect on filtration rate and 2) an additional... Tipo: Text Palavras-chave: DEB theory; Bioenergetics; Filtration; Maintenance; Growth; Estuary; Louisiana. Ano: 2017 URL: http://archimer.ifremer.fr/doc/00400/51137/53773.pdf Diversity and composition of macrobenthic community associated with sandy shoals of the Louisiana continental shelf ArchiMer Dubois, Stanislas; Gelpi, Carey; Condrey, Richard E.; Grippo, Mark A.; Fleeger, John W.. Along the Louisiana, USA continental shelf, sandy shoals are shallow, possibly oxygen-rich "islands" surrounded by deeper muddy deposits prone to hypoxia. Shoals also contain significant quantities of fine sand that may be mined in the future for coastal restoration. The ecological role of shoals remains poorly understood and we hypothesized that shoals provide critical habitat for benthic invertebrates. Using Ship Shoal as a model system, we assessed the diversity and structure of macrobenthic assemblages and how community structure varies with season and environmental parameters. High biomass (averaging 26.7 g m(-2)) and high diversity (161 species) of macrobenthos was found in 2006. Polychaetes (45%-72 species) and crustaceans comprised most of the... Tipo: Text Palavras-chave: Shallow habitat; Sand bank; Louisiana; Hypoxia refuge; Gulf of Mexico; Continental shelf; Biodiversity hotspot. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6975.pdf The Economics of Rotational Grazing in the Gulf Coast Region: Costs, Returns, and Labor Considerations, Phase II AgEcon Gillespie, Jeffrey M.; Wyatt, Wayne; Venuto, Brad; Blouin, David; Boucher, Robert W.; Nipper, Weldon; Qushim, Berdikul. Profitability and labor associated with rotational grazing at three stocking rates and continuous grazing at a medium stocking rate are compared. On a per-acre basis, profits are lowest for low stocking rate rotational grazing. Labor is greatest on both per-acre and per-cow bases with high stocking rate rotational grazing. Tipo: Conference Paper or Presentation Palavras-chave: Time and Motion Study; Conservation; Louisiana; Cow-Calf; Farm Management; Production Economics; Q16. Ano: 2011 URL: http://purl.umn.edu/98830 Decision to Adopt and Exit Best Management Practices by Dairy Farmers AgEcon Hall, Larry M.; Paudel, Krishna P.; Gauthier, Wayne M.; Westra, John V.. Dairy farmers in Louisiana were surveyed to find out the factors leading these farmers to terminate best management practices. Results indicated that only few farmers have exited the practices once they adopt those. However, the longevity of best management practices adoption can be increased by emphasizing on education and targeting to operators who have already been in dairy practices for a longer time period. Tipo: Conference Paper or Presentation Palavras-chave: Best management practices; Dairy; Entry; Exit; Louisiana; Farm Management; Livestock Production/Industries. Ano: 2007 URL: http://purl.umn.edu/9890 Registros recuperados: 4 Primeira ... 1 ... Última

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