Spatial and temporal trends of poly- and perfluoroalkyl substances in fish fillets and water collected from pool 2 of the Upper Mississippi River

2017 ◽  
Vol 36 (11) ◽  
pp. 3138-3147 ◽  
Author(s):  
John L. Newsted ◽  
Ryan Holem ◽  
Gary Hohenstein ◽  
Cleston Lange ◽  
Mark Ellefson ◽  
...  
Keyword(s):  
Mississippi River ◽  
Temporal Trends ◽  
Perfluoroalkyl Substances ◽  
Upper Mississippi River ◽  
Fish Fillets ◽  
Spatial And Temporal Trends

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
Ictalurus Punctatus ◽  
Mississippi River ◽  
Market Competition ◽  
Temporal Trends ◽  
Temporal Variations ◽  
Commercial Fishing ◽  
Substantial Portion ◽  
Black Bullhead ◽  
Commercial Harvest ◽  
Spatial And Temporal Trends

<em>Abstract</em>.—Ictalurids compose a substantial portion of the commercial harvest in the upper Mississippi River (UMR). The purpose of this investigation was to examine spatial and temporal trends in commercial harvest of ictalurids in the UMR. The study focused on four species: channel catfish <em>Ictalurus punctatus</em>, flathead catfish<em> Pylodictis olivaris</em>, blue catfish <em>I. furcatus</em>, and black bullhead <em>Ameiurus melas</em>. We described trends in yield and market value and evaluated the influence of numerous factors on commercial catfish harvest in Pools 3–26 of the UMR between 1953 and 2001. Spatial and temporal variations in commercial harvest of catfish appeared to be driven by different factors through time. Early factors included habitat loss and overexploitation, and later factors included loss of the market share and increased market competition with aquaculture. Ictalurids have maintained a consistent proportion of the total commercial harvest in the UMR, and decreases in catfish harvest may indicate larger declines in commercial fishing.

Spatial and temporal trends in perfluoroalkyl substances (PFASs) in ringed seals (Pusa hispida) from Svalbard

2016 ◽  
Vol 214 ◽  
pp. 230-238 ◽  
Author(s):  
Heli Routti ◽  
Geir Wing Gabrielsen ◽  
Dorte Herzke ◽  
Kit M. Kovacs ◽  
Christian Lydersen
Keyword(s):  
Temporal Trends ◽  
Perfluoroalkyl Substances ◽  
Ringed Seals ◽  
Pusa Hispida ◽  
Spatial And Temporal Trends
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