Abstract
| Language | English |
|---|---|
| Article number | 201 |
| Number of pages | 12 |
| Journal | Frontiers in Marine Science |
| Volume | 6 |
| Issue number | APR |
| DOIs | |
| Publication status | Published - 26 Apr 2019 |
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Keywords
- North Sea
- sandeels
- growth
- survival
- seabirds
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Trends in sandeel growth and abundance off the east coast of Scotland. / MacDonald, Alan; Speirs, Douglas C.; Greenstreet, Simon P. R.; Boulcott, Philip; Heath, Michael R.
In: Frontiers in Marine Science, Vol. 6, No. APR, 201, 26.04.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Trends in sandeel growth and abundance off the east coast of Scotland
AU - MacDonald, Alan
AU - Speirs, Douglas C.
AU - Greenstreet, Simon P. R.
AU - Boulcott, Philip
AU - Heath, Michael R.
PY - 2019/4/26
Y1 - 2019/4/26
N2 - Sandeels Ammodytes marinus are a crucial forage fish species in the North Sea, transferring zooplankton energy to higher trophic levels. However, there has been a sustained decline in sandeel abundance in the northwestern North Sea since 2000. Here we use field data to analyze year-to-year changes in A. marinus growth rate between 1997 and 2009 and assess whether variation in growth rate corresponded with variation in abundance. The signature of the reduction in abundance between 2000 and 2009 was a decline in age 1 sandeels, while no other age class declined. Analysis of age-length data showed that the decline in abundance coincided with a period of low growth. Growth performance indexes were correlated with zooplankton and phytoplankton biomass but not temperature. Further, we observed a significant correlation between larval growth rate and 0-group sandeel length during a period when hatch dates were relatively fixed; suggesting recent changes in length were influenced by food availability.
AB - Sandeels Ammodytes marinus are a crucial forage fish species in the North Sea, transferring zooplankton energy to higher trophic levels. However, there has been a sustained decline in sandeel abundance in the northwestern North Sea since 2000. Here we use field data to analyze year-to-year changes in A. marinus growth rate between 1997 and 2009 and assess whether variation in growth rate corresponded with variation in abundance. The signature of the reduction in abundance between 2000 and 2009 was a decline in age 1 sandeels, while no other age class declined. Analysis of age-length data showed that the decline in abundance coincided with a period of low growth. Growth performance indexes were correlated with zooplankton and phytoplankton biomass but not temperature. Further, we observed a significant correlation between larval growth rate and 0-group sandeel length during a period when hatch dates were relatively fixed; suggesting recent changes in length were influenced by food availability.
KW - North Sea
KW - sandeels
KW - growth
KW - survival
KW - seabirds
UR - https://www.frontiersin.org/journals/marine-science
U2 - 10.3389/fmars.2019.00201
DO - 10.3389/fmars.2019.00201
M3 - Article
VL - 6
JO - Frontiers in Marine Science
T2 - Frontiers in Marine Science
JF - Frontiers in Marine Science
SN - 2296-7745
IS - APR
M1 - 201
ER -