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Effects Of Increasing Temperature And Ocean Acidification On The Microstages Of Two Populations Of Saccharina Latissima In The Northwest Atlantic, Sarah Redmond
Master's Theses
Saccharina latissima (Linnaeus) C.E.Lane, C.Mayes, L.D. Druehl and G.W.Saunders, is the most widely distributed species of kelp in the western North Atlantic, occurring from the Arctic to Long Island Sound. The effects of global climate change on these ecologically and economically important cold temperate species at the southern range of their distribution are unknown. This study investigated the impact of the combined stressors of increased temperature (16, 19, 22, 25 & 28°C) and reduced pH (7.9, 7.8, 7.7, & 7.6) on the gametophyte and juvenile sporophyte stages of sugar kelp populations from Maine and Long Island Sound. Spore germination and …
Can Acartia Spp. Adapt To Climatic Warming? Heritable Within-Population Genetic Variation In Life History Traits, Benjamin L. Cournoyer
Can Acartia Spp. Adapt To Climatic Warming? Heritable Within-Population Genetic Variation In Life History Traits, Benjamin L. Cournoyer
Master's Theses
To predict the response of the biota to environmental change requires information on intrapopulation variation in life history traits and the proportion of phenotypic variation attributable to genes, heritability. Yet, knowledge of these parameters in marine populations is very limited. In the present study, I consider phenotypic plasticity and heritability of temperature-dependent, fitness-related life history traits in two coastal copepod species, Acartia tonsa and Acartia hudsonica, from Long Island Sound, a temperate estuary on the east coast of the USA. Acartia hudsonica is a purportedly cold-adapted species and A. tonsa a warm-adapted one. I used a full-sibling, split family design …