Radionuclides (137Cs and 40K) in harbour porpoises Phocoena phocoena from British and Irish Coastal waters

Berrow, Simon; Long, Stephanie; McGarry, A.T.; Pollard, D.; Rogan, Emer; Lockyer, Christina

doi:10.1016/s0025-326x(98)00004-6

Cited by 17 publications

(9 citation statements)

References 10 publications

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“…The average level of 40 K, a naturally occurring radionuclide, in the stranded cetaceans (Table 1) was in accordance with that in marine mammals inhabiting the coastal waters off the British Isles (Berrow et al 1998, Watson et al 1999. Thus, the 40 K concentration in the cetacean muscle may be constant at about 100 Bq kg ) between June and August 2011, and rapidly decreasing thereafter (Takagi et al 2014).…”

Section: Cs Contamination In Stranded Cetaceanssupporting

confidence: 66%

“…Cs were observed in seawater collected from the coastal waters off Hok kaido (Inoue et al 2012a,b). The concentration Cs was estimated to be 60 to 90 in Dall's porpoises (Kasamatsu et al 1999), 186 ± 141 for marine mammals in general (Yoshitome et al 2003), and 100 to 400 in harbour porpoises (Berrow et al 1998). Given a typical concentration factor of 100 and a 137 Cs concentration of 2 mBq kg −1 in seawater (Oikawa et al 2013) Cs in the coastal waters off Sanriku and the Shimokita Peninsula before stranding on the coast of Hokkaido.…”

Section: Cs Contamination In Stranded Cetaceansmentioning

confidence: 99%

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Radiocesium contamination of cetaceans stranded along the coast of Hokkaido, Japan, and an estimation of their travel routes

Nakamura¹,

Kimura²,

Matsuda³

et al. 2015

Mar. Ecol. Prog. Ser.

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We analyzed radiocesium ( 134 Cs and 137 Cs) levels in the muscle tissue of several odontocetes and mysticetes stranded on the coast of Hok kaido (the northernmost island of Japan) in 2011 and 2012, following the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident in March 2011. Since most of the radiocesium from the FDNPP was released into the western North Pacific Ocean and carried eastward from the Japan coast, there was little radiocesium contamination in the seawater around Hok kaido. Hokkaido is surrounded by the North Pacific Ocean, the Japan Sea, and the Okhotsk Sea, but radiocesium was predominantly detected in the cetaceans stranded along the North Pacific coast between June and October 2011. Among the stranded cetaceans, which included the Pacific white-sided dolphin, harbour porpoise and Dall's porpoise (odontocetes) as well as the common minke whale and humpback whale (mysticetes), the highest level of contamination was found in a common minke whale. The radiocesium contamination of these ceta ceans suggests that they moved seasonally from the south of Hokkaido, particularly through the contaminated area of the western North Pacific Ocean. The radiocesium levels in the tissues of these animals is likely a result of the contamination level of the seawater along their travel route, rather than their trophic level, because of the sudden changes in radiocesium transport and diffusion in seawater that occurred in 2011. Cs contamination in Pacific white-side dolphins suggests they had travelled from the contaminated waters near the Fukushima nuclear power plant.

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Section: Cs Contamination In Stranded Cetaceanssupporting

confidence: 66%

Section: Cs Contamination In Stranded Cetaceansmentioning

confidence: 99%

Radiocesium contamination of cetaceans stranded along the coast of Hokkaido, Japan, and an estimation of their travel routes

Nakamura¹,

Kimura²,

Matsuda³

et al. 2015

Mar. Ecol. Prog. Ser.

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“…Previously reported concentrations of 137 Cs in seals from other areas vary from 0.21 Bq kg −1 w.w. in ringed seals from Svalbard (Norway) and Pangnirtung (Canada), to 17 Bq kg − 1 w.w. in gray seals from the U.K. coast (Berrow et al, 1998;Carroll et al, 2002;Yoshitome et al, 2003). More recent studies reported low levels 137 Cs in marine mammals from Svalbard and North Greenland Sea collected in the period [2000][2001][2002][2003].…”

mentioning

confidence: 99%

137Cs, 40K and 210Po in marine mammals from the southern Baltic Sea

Ciesielski

Góral

Szefer

et al. 2015

Marine Pollution Bulletin

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“…A recent study (Long et al 1996, Berrow et al 1998) of radionuclide levels in porpoises from the Irish Sea, while not indicating hazardous levels, nevertheless found that the relatively higher levels of cesium-137 could indicate a resident population in the Irish Sea. Watson et al (1999), in an investigation of tissues from marine mammals including porpoise, reported a correlation of radiocesium and plutonium concentrations and distance from the British nuclear power plant at Sellafield, which would be a good indicator of the origin of animals.…”

Section: Chemical Signals and Dietmentioning

confidence: 96%

A review of methods for defining population structure in the harbour porpoise (<i>Phocoena phocoena</i>)

Lockyer

2003

NAMMCOSP

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Wide-ranging methods that have been used to determine population structure, including distribution, life history, biology, ecological factors such as diet and contaminant loads, morphology and genetics, are reviewed. The importance of determining population sub-structure of harbour porpoise throughout the North Atlantic, especially in regions affected by incidental take in fisheries, is discussed in relation to management measures. Some practical proposals are made for integrating diverse information about populations, using the phylogeographic approach, for thepurpose of evaluating the need to manage putative subpopulations separately. Examples focusingon the North and Baltic seas areas are used in this discussion, with some reference to other areas. It is concluded that the existing IWC proposal for 13 populations in the North Atlantic is generally supported, but with some refinement and modification; in particular, allowing sub-divisions in the area through the North Sea to the Baltic.

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Radionuclides (137Cs and 40K) in harbour porpoises Phocoena phocoena from British and Irish Coastal waters

Cited by 17 publications

References 10 publications

Radiocesium contamination of cetaceans stranded along the coast of Hokkaido, Japan, and an estimation of their travel routes

Radiocesium contamination of cetaceans stranded along the coast of Hokkaido, Japan, and an estimation of their travel routes

137Cs, 40K and 210Po in marine mammals from the southern Baltic Sea

A review of methods for defining population structure in the harbour porpoise (<i>Phocoena phocoena</i>)

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