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Dietary mercury exposure to endangered California Clapper Rails in San Francisco Bay

Overview of attention for article published in Marine Pollution Bulletin, September 2014
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1 tweeter

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Title
Dietary mercury exposure to endangered California Clapper Rails in San Francisco Bay
Published in
Marine Pollution Bulletin, September 2014
DOI 10.1016/j.marpolbul.2014.07.009
Pubmed ID
Authors

Michael L. Casazza, Mark A. Ricca, Cory T. Overton, John Y. Takekawa, Angela M. Merritt, Joshua T. Ackerman

Abstract

California Clapper Rails (Rallus longirostris obsoletus) are an endangered waterbird that forage in tidal-marsh habitats that pose risks from mercury exposure. We analyzed total mercury (Hg) in six macro-invertebrate and one fish species representing Clapper Rail diets from four tidal-marshes in San Francisco Bay, California. Mercury concentrations among individual taxa ranged from lowest at Colma Creek (mean range: 0.09-0.2μg/gdw) to highest at Cogswell (0.2-0.7), Laumeister (0.2-0.9) and Arrowhead Marshes (0.3-1.9). These spatial patterns for Hg matched patterns reported previously in Clapper Rail blood from the same four marshes. Over 25% of eastern mudsnails (Ilyanassa obsolete) and staghorn sculpin (Leptocottus armatus) exceeded dietary Hg concentrations (ww) often associated with avian reproductive impairment. Our results indicate that Hg concentrations vary considerably among tidal-marshes and diet taxa, and Hg concentrations of prey may provide an appropriate proxy for relative exposure risk for Clapper Rails.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 30 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 1 3%
Unknown 29 97%

Demographic breakdown

Readers by professional status Count As %
Researcher 7 23%
Student > Master 5 17%
Student > Ph. D. Student 4 13%
Other 2 7%
Student > Bachelor 2 7%
Other 6 20%
Unknown 4 13%
Readers by discipline Count As %
Agricultural and Biological Sciences 12 40%
Environmental Science 7 23%
Veterinary Science and Veterinary Medicine 1 3%
Unspecified 1 3%
Pharmacology, Toxicology and Pharmaceutical Science 1 3%
Other 1 3%
Unknown 7 23%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 15 August 2014.
All research outputs
#12,800,262
of 14,483,684 outputs
Outputs from Marine Pollution Bulletin
#3,744
of 5,323 outputs
Outputs of similar age
#159,968
of 194,202 outputs
Outputs of similar age from Marine Pollution Bulletin
#62
of 78 outputs
Altmetric has tracked 14,483,684 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 5,323 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.3. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 194,202 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 78 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.