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- Publications
- Influence
Synchronous ecological regime shifts in the central Baltic and the North Sea in the late 1980s
- J. Alheit, C. Möllmann, +4 authors N. Wasmund
- Biology
- 2005
The index of the North Atlantic Oscillation, the dominant mode of climatic variability in the North Atlantic region, changed in the late 1980s (1987e1989) from a negative to a positive phase. This… Expand
Climate Variability, Fish, and Fisheries
- P. Lehodey, J. Alheit, +10 authors F. Werner
- 15 October 2006
Abstract Fish population variability and fisheries activities are closely linked to weather and climate dynamics. While weather at sea directly affects fishing, environmental variability determines… Expand
Regime shifts in the Humboldt Current ecosystem
- J. Alheit, Miguel Ñiquen
- Geology
- 1 February 2004
Abstract Of the four major eastern boundary currents, the Humboldt Current (HC) stands out because it is extremely productive, dominated by anchovy dynamics and subject to frequent direct… Expand
Worldwide large-scale fluctuations of sardine and anchovy populations
- R. A. Schwartzlose, J. Alheit, +18 authors J. Z. Zuzunaga
- Biology
- 1 June 1999
Decade-scale regimes of sardine Sardinops sagax and anchovy Engraulis spp. have been observed in the productive coastal waters of the North-Western, North-Eastern and South-Eastern Pacific and the… Expand
Long‐term climate forcing of European herring and sardine populations
Records of the herring, Clupea harengus, fishery off the Swedish coast of Bohuslan, in the Skagerrak, date back to the 10th century. Nine periods, each lasting several decades, are known during which… Expand
Detecting regime shifts in the ocean: Data considerations
- B. deYoung, R. Harris, J. Alheit, G. Beaugrand, N. Mantua, L. Shannon
- Environmental Science
- 1 February 2004
We review observational data sets that have been used to detect regime shifts in the ocean. Through exploration of data time series we develop a definition of a regime shift from a pragmatic… Expand
Marine Ecosystem Response to the Atlantic Multidecadal Oscillation
- M. Edwards, G. Beaugrand, P. Hélaouët, J. Alheit, S. Coombs
- Geography, Medicine
- PloS one
- 27 February 2013
Against the backdrop of warming of the Northern Hemisphere it has recently been acknowledged that North Atlantic temperature changes undergo considerable variability over multidecadal periods. The… Expand
Use of the Daily Egg Production Method for estimating biomass of clupeoid fishes: a review and evaluation : Ichthyoplankton methods for estimating fish biomass
- J. Alheit
- Biology
- 1993
- 88
- 9
Climate controls on marine ecosystems and fish populations
- J. Overland, J. Alheit, A. Bakun, J. Hurrell, D. Mackas, A. Miller
- Environmental Science
- 10 February 2010
Abstract This paper discusses large-scale climate variability for several marine ecosystems and suggests types of ecosystem responses to climate change. Our analysis of observations and model results… Expand
Population synchronies within and between ocean basins: Apparent teleconnections and implications as to physical-biological linkage mechanisms
Abstract Major fish populations in large marine ecosystems separated by thousands of kilometres often seem to fluctuate in decadal-scale synchrony indicating strong forcing of ecosystem processes and… Expand