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Invasive red lionfish Pterois volitans blow directed jets of water at prey fish

Creator:: Albins, Mark A. and Lyons, Patrick J.
Abstract:: Field and laboratory observations of feeding by invasive Pacific red lionfish Pterois volitans were conducted during June through August of 2008, 2009 and 2010 near Lee Stocking Island, Bahamas. Observations of this invasive marine predator revealed a previously undocumented piscivorous behavior. While slowly approaching prey fish, lionfish produce jets of...
Resource Type:: Article
Full Text:: water jets, to our knowl- edge, this is the first report of a fish that does so during the capture of

Modeling carbohydrate ballasting by Trichodesmium spp.

Creator:: White, Angelicque E., Spitz, Yvette H., and Letelier, Ricardo M.
Abstract:: We report the development of a numerical model simulating vertical movement of the cyanobacterium Trichodesmium spp. Given a range of physiological parameters derived from the literature, resultant model solutions allow us to explore the ecological significance of vertical migration by Trichodesmium colonies in a stratified oligotrophic oceanic system such as...
Resource Type:: Article
Full Text:: , Corvallis, Oregon 97331, USA ABSTRACT: We report the development of a numerical model simulating vertical

Macrofaunal modification of porewater advection: role of species function, species interaction, and kinetics

Creator:: Waldbusser, George G. and Marinelli, Roberta L.
Abstract:: ABSTRACT: Sedimentary habitats are complex associations of biotic, chemical, and physical processes comprising ‘ecosystem function’. The relative importance of these processes to biogeochemical cycling in highly reactive, permeable sediments remains poorly understood. We report results from several field experiments in a muddy-sand intertidal flat dominated by 2 functionally different types...
Resource Type:: Article
Full Text:: poorly understood. We report results from several field experiments in a muddy-sand intertidal flat

Light-induced growth of phytoplankton collected during the winter from the benthic boundary layer off Oregon, USA

Creator:: Wetz, Michael S., Wheeler, Patricia A., and Letelier, Ricardo M.
Abstract:: Despite the importance of the spring phytoplankton bloom off Oregon as a food source for zooplankton, little is known about the sources of phytoplankton seed stock for the bloom or its timing. Experiments were conducted in the late winter to determine if the benthic boundary layer (BBL) could be a...
Resource Type:: Article
Full Text:: data from the GLOBEC long-term observation program off Oregon, 2002 and 2003. Data Report no. 192

Assessment of macroalgal nitrogen limitation in a seasonal upwelling region

Creator:: Fujita, Rodney M., Wheeler, Patricia A., and Edwards, Robert L.
Abstract:: The relationship between nitrogen (N) availability and the growth of macroalgae in a seasonal upwelling region (Yaquina Head, Oregon, USA) was investigated. Water column nutrient concentrations were relatively high and stable during the winter, decreased in early spring, and were highly variable in the summer and early fall. Periods of...
Resource Type:: Article
Full Text:: growth at Yaquina Head, due to its rapid uptake, despite the greater abundance of NO: The cntical N

What sets lower limits to phytoplankton stocks in high-nitrate, low-chlorophyll regions of the open ocean?

Creator:: Strom, Suzanne L., Miller, Charles B., and Frost, Bruce W.
Abstract:: Phytoplankton biomass in high-nitrate, low-chlorophyll (HNLC) ocean regions exhibits a pronounced stability: variation occurs only within a narrow range of values. The magnitude of this variation has profound ecological and geochemical consequences. While mechanisms believed to set the upper limits to HNLC phytoplankton biomass (iron limitation, microherbivore grazing) have received...
Resource Type:: Article
Full Text:: , and no micrograzer mortality at low food levels. Laboratory observations of these same bio- logical

Comparison of larval development in domesticated and naturalized stocks of the Pacific oyster Crassostrea gigas exposed to high pCO₂ conditions

Creator:: Durland, Evan, Waldbusser, George, and Langdon, Chris
Abstract:: Ocean acidification (OA) has had significant negative effects on oyster populations on the west coast of North America over the past decade. Many studies have focused on the physiological challenges experienced by young oyster larvae in high pCO₂/low pH seawater with reduced aragonite saturation state (Ωarag), which is characteristic of...
Resource Type:: Article
Full Text:: seawater on metamor- phosis of pediveligers to spat were variable between years, with no effect of seawater

Altered search speed and growth: social versus independent foraging in two pelagic juvenile fishes

Creator:: Ryer, Clifford H. and Olla, Bori L.
Abstract:: Prior studies have demonstrated that juvenile walleye pollock Theragra chalcogramma forage socially in schools for spatially and temporally clumped food, but forage more independently for spatially and temporally dispersed food. One advantage of social foraging is that fish in schools may be able to locate more food clumps than fish...
Resource Type:: Article
Full Text:: speed response, with no difference in growth between food distributions. Our results demonstrate that

Modelling diatom and Phaeocystis blooms and nutrient cycles in the Southern Bight of the North Sea: the MIRO model

Creator:: Lancelot, C., Spitz, Y., Gypens, N., Ruddick, K., Becquevort, S., Rousseau, V., Lacroix, G., and Billen, G.
Abstract:: The link between anthropogenic nutrient loads and the magnitude and extent of diatom and Phaeocystis colony blooms in the Southern Bight of the North Sea was explored with the complex ecosystem model MIRO. The model was adapted for resolving the changing nutrient loads, the complex biology of the bloom species...
Resource Type:: Article
Full Text:: degrad. sedim. nitrif. denit. A no xi c la ye r O xi c la ye r Grazing growth & resp. dissol

Winter ichthyoplankton biomass as a predictor of early summer prey fields and survival of juvenile salmon in the northern California Current

Creator:: Daly, Elizabeth A., Auth, Toby D., Brodeur, Richard D., and Peterson, William T.
Abstract:: Diets of juvenile coho Oncorhynchus kisutch and Chinook O. tshawytscha salmon are made up primarily of winter-spawning fish taxa in the late-larval and early juvenile stages that are undersampled in plankton and larger trawl nets. Although we have no direct measure of the availability of fish prey important to juvenile...
Resource Type:: Article
Full Text:: larger trawl nets. Although we have no direct measure of the availability of fish prey important to

ScholarsArchive@OSU

Invasive red lionfish Pterois volitans blow directed jets of water at prey fish

Modeling carbohydrate ballasting by Trichodesmium spp.

Macrofaunal modification of porewater advection: role of species function, species interaction, and kinetics

Light-induced growth of phytoplankton collected during the winter from the benthic boundary layer off Oregon, USA

Assessment of macroalgal nitrogen limitation in a seasonal upwelling region

What sets lower limits to phytoplankton stocks in high-nitrate, low-chlorophyll regions of the open ocean?

Comparison of larval development in domesticated and naturalized stocks of the Pacific oyster Crassostrea gigas exposed to high pCO₂ conditions

Altered search speed and growth: social versus independent foraging in two pelagic juvenile fishes

Modelling diatom and Phaeocystis blooms and nutrient cycles in the Southern Bight of the North Sea: the MIRO model

Winter ichthyoplankton biomass as a predictor of early summer prey fields and survival of juvenile salmon in the northern California Current

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