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Institution

National Ocean Service

GovernmentSilver Spring, Maryland, United States
About: National Ocean Service is a government organization based out in Silver Spring, Maryland, United States. It is known for research contribution in the topics: Algal bloom & Population. The organization has 500 authors who have published 643 publications receiving 46096 citations.


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Journal ArticleDOI
TL;DR: Findings suggest persistent PbTx exposure for many individuals in these populations, although the health impacts of such exposure are not known.

4 citations

Journal ArticleDOI
TL;DR: Grazing rates on C. ritteri were correlated with urchin biomass in the field suggesting higher herbivory intensity may shift primary producer energy allocation from growth to defense, and data suggest that macroalgae occurring within kelp forests grow faster but are more palatable than macroalgal growth and defense tradeoffs, which may increase urch in deforestation potential.
Abstract: A primary goal in the study of producer–herbivore interactions is to characterize the tradeoffs between primary producer growth and defense. Across the Aleutian Island Archipelago, the widespread decline in sea otters has resulted in reduced predation on sea urchins, which has led to increases in urchin populations, the formation of urchin barrens, and ultimately to overgrazing of much of the region’s kelp forests. The occurrence of both kelp forests and urchin barrens on islands, along with among island variation in the time period that urchin barrens have formed, presents a unique opportunity to characterize the extent to which exposure to intense herbivory and increased light may alter marine macroalgal growth and defense tradeoffs. To address this, we used a field caging experiment with Codium ritteri, a common perennial green macroalga in the Aleutian Archipelago, to test whether urchin barren macroalgae exhibit increased defenses and reduced growth relative to kelp forest individuals. Our results suggest that urchin barren C. ritteri had greater defense than growth relative to kelp forest individuals. In the laboratory, we found little evidence for urchin barren C. ritteri growth under low light or altered defenses at high light. Grazing rates on C. ritteri were correlated with urchin biomass in the field suggesting higher herbivory intensity may shift primary producer energy allocation from growth to defense. Together, our data suggest that macroalgae occurring within kelp forests grow faster but are more palatable than macroalgae occurring in urchin barrens, which may increase urchin deforestation potential.

4 citations

Journal ArticleDOI
TL;DR: Lionfish has good potential to be used as a standardized biomonitoring species for oil pollution in its neotropical realm, based on its widespread distribution, relative ease of collection, and significant biomarker responses in the controlled dosing experiment.

4 citations

Journal ArticleDOI
TL;DR: An analysis of tidal current variability is performed over seasonal scales for an 11-year record of estuarine currents at two locations in Tampa Bay, Florida from 2002 to 2012, bimonthly harmonic analyses were performed on current observations collected near the entrance to Old Tampa Bay and at the Sunshine Skyway Bridge as mentioned in this paper.
Abstract: An analysis of tidal current variability is performed over seasonal scales for an 11-year record of estuarine currents at two locations in Tampa Bay, Florida From 2002 to 2012, bimonthly harmonic analyses were performed on current observations collected near the entrance to Old Tampa Bay and at the Sunshine Skyway Bridge The resultant tidal constituents and nontidal residual were then correlated with other parameters to determine potential physical forcing Comparison with local wind data suggests that the land-sea breeze cycle can have significant impact on diurnal tidal current flow Periods of strong land-sea breeze are found to have up to a 30% increase in K1 amplitude compared with periods of weak land-sea breeze Subtidal weather-scale wind forcing with periods from 2 to 7 days demonstrates a strong correlation with nontidal residual flow, likely resulting from both direct wind forcing as well as the modification of along-estuary water-level gradients Additionally, the M2 constituent corr

3 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20222
202129
202017
201917
201831
201719