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Full-Text Articles in Marine Biology
Iron And Manganese Reduction In Bering Sea Shelf Sediments, Margaret E.S. Esch
Iron And Manganese Reduction In Bering Sea Shelf Sediments, Margaret E.S. Esch
WWU Graduate School Collection
The southeastern Bering Sea is known for high levels of primary productivity, which is iron-limited in off-shore waters. The sedimentary reduction of iron and manganese oxides can be significant pathways of organic matter oxidation in marine sediments, and may influence patterns of primary production in surface waters. The goal of this research was to investigate patterns of Fe and Mn reduction rates across the shelf of the southeastern Bering Sea, and to assess the relative importance of these pathways in sedimentary organic matter remineralization. During the spring and summer of 2009, sediment samples were collected from 36 locations across the …
Vectoring Algal Toxin In Marine Planktonic Food Webs: Sorting Out Nutritional Deficiency From Toxicity Effects, Amy K. (Amy Keita) Burgess
Vectoring Algal Toxin In Marine Planktonic Food Webs: Sorting Out Nutritional Deficiency From Toxicity Effects, Amy K. (Amy Keita) Burgess
WWU Graduate School Collection
The present study determined whether increased mortality and delayed development of larval crabs fed heterotrophic prey that themselves have been fed toxin-containing algae is due to toxicity effects or nutritional deficiency. The effects on larval crabs of previous exposure to heterotrophic prey fed toxin-containing algae were examined. Effects of varying length of exposure of larvae to toxin-containing prey were also examined. The rotifer Brachionus plicatilis was used as a heterotrophic prey source for three larval crab species (Lophopanopeus bellus, Metacarcinus magister, and Glebocarcinus oregonensis). Two rotifer treatments were created, one of rotifers fed a toxin-containing alga (Alexandrium andersoni or A. …