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Freshwater Ecosystems and Resilience of Pacific Salmon: Habitat Management Based on Natural Variability Ecology and Society
Bisson, Peter A; U.S. Forest Service; pbisson@fs.fed.us; Dunham, Jason B; U.S. Geological Survey; jdunham@usgs.gov; Reeves, Gordon H; U.S. Forest Service; greeves@fs.fed.us.
In spite of numerous habitat restoration programs in fresh waters with an aggregate annual funding of millions of dollars, many populations of Pacific salmon remain significantly imperiled. Habitat restoration strategies that address limited environmental attributes and partial salmon life-history requirements or approaches that attempt to force aquatic habitat to conform to idealized but ecologically unsustainable conditions may partly explain this lack of response. Natural watershed processes generate highly variable environmental conditions and population responses, i.e., multiple life histories, that are often not considered in restoration. Examples from several locations underscore the importance of natural variability to the resilience of Pacific...
Tipo: Peer-Reviewed article Palavras-chave: Pacific salmon; Habitat restoration; Watershed processes; Natural variation.
Ano: 2009
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Profiling carbohydrate composition, biohydrogen capacity, and disease resistance in potato Electron. J. Biotechnol.
Diez-de-Medina Roldán,Sergio; Silva,Herman; Jeblick,Wolfgang; Nowik,Isabella; Modigell,Michael; Neuhaus,H. Ekkehard; Conrath,Uwe.
Background: Potato (Solanum tuberosum) is one of the most important sources of carbohydrates in human diet. Because of its high carbohydrate levels it recently has also received attention in biohydrogen production. To exploit the natural variation of potato with respect to resistance to major diseases, carbohydrate levels and composition, and capacity for biohydrogen production we analyzed tubers of native, improved, and genetically modified potatoes, and two other tuberous species for their glucose, fructose, sucrose, and starch content. Results: High-starch potato varieties were evaluated for their potential for Caldicellulosiruptor saccharolyticus-mediated biohydrogen production with Desirée and Rosita varieties delivering the highest biohydrogen...
Tipo: Journal article Palavras-chave: Biohydrogen; Caldicellulosiruptor saccharolyticus; Carbohydrates; Natural variation; Phytophthora infestans; Potato.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000600002
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Phenotypic plasticity for Drosophila melanogaster (Diptera: Drosophilidae) larval olfactory behaviour in response to whole fruit olfactory stimuli Rev. Soc. Entomol. Argent.
Lavagnino,Nicolás J.; Fanara,Juan J..
Drosophila melanogaster Meigen 1830 (Diptera: Drosophilidae) is the quintessential insect model organism. However, with a few exceptions, ecological features of this species have been poorly investigated. In the present work we describe a behavioural assay to quantify olfactory behaviour of D. melanogaster larvae in response to complex olfactory stimuli that are present in the natural environments, i. e.: rotten fruits that act as hosts in nature. Results obtained using this assay reveal that there is intra-population genetic variation and phenotypic plasticity for the character in a natural population from west-central Argentina.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Olfactory behaviour; Natural variation; Phenotypic plasticity; Drosophila melanogaster; Behavioural assay.
Ano: 2011 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802011000200022
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