Articles | Volume 18, issue 23
Biogeosciences, 18, 6115–6132, 2021
Biogeosciences, 18, 6115–6132, 2021

Research article 30 Nov 2021

Research article | 30 Nov 2021

Enhanced chlorophyll-a concentration in the wake of Sable Island, eastern Canada, revealed by two decades of satellite observations: a response to grey seal population dynamics?

Emmanuel Devred et al.

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Cited articles

Ainsworth, E. J.: Visualization of Ocean Colour and Temperature from multi-spectral imagery captured by the Japanese ADEOS satellite, J. Visual., 2, 195–204,, 1999. a
Boden, B. P.: Observations of the island mass effect in the Prince Edward archipelago, Polar Biol., 61–68, 260–265,, 1988. a
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Bowen, W. D., McMillan, J. I., and Wade, B.: Reduced population growth of gray seals at Sable Island: evidence from pup production and age of primiparity, Mar Mammal Sci., 23, 48–64,, 2007. a, b
Breed, G. A., Bowen, D. W., McMillan, J., and Leonard, M. L.: Sex segregation of seasonal foraging habitats in a non-migratory marine mammal, P. R. Soc. B, 273, 2319–26,, 2006. a
Short summary
A theoretical model of grey seal seasonal abundance on Sable Island (SI) coupled with chlorophyll-a concentration [chl-a] measured by satellite revealed the impact of seal nitrogen fertilization on the surrounding waters of SI, Canada. The increase in seals from about 100 000 in 2003 to about 360 000 in 2018 during the breeding season is consistent with an increase in [chl-a] leeward of SI. The increase in seal abundance explains 8 % of the [chl-a] increase.
Final-revised paper