Long-term changes in pelagic tunicates of the California Current

@article{Lavaniegos2003LongtermCI,
  title={Long-term changes in pelagic tunicates of the California Current},
  author={Bertha E. Lavaniegos and Mark D. Ohman},
  journal={Deep-sea Research Part Ii-topical Studies in Oceanography},
  year={2003},
  volume={50},
  pages={2473-2498}
}
  • B. Lavaniegos, M. Ohman
  • Published 1 August 2003
  • Biology
  • Deep-sea Research Part Ii-topical Studies in Oceanography
Abstract This study analyzes interannual variability in springtime carbon biomass of pelagic tunicates (salps, doliolids, pyrosomes, and appendicularians) over the period 1951–2002 from CalCOFI zooplankton samples taken in the southern sector of the California Current System. The results provide evidence for ecosystem changes between 1976 and 1977 and perhaps between 1998 and 1999. A cool-phase group of salps (Salpa maxima, Pegea socia, Cyclosalpa bakeri, and Cyclosalpa affinis) that was… 
Interannual variability in krill off Baja California in the period 1997–2005
Abstract We document interannual changes in the species composition of euphausiids inhabiting the waters off Baja California during the period of 1997–2005. Thirty-two euphausiid species were
MILLER ET AL.: DISTRIBUTION OF PELAGIC THALIACEANS DURING A PERIOD OF MASS OCCURRENCE WITHIN THE CALIFORNIA CURRENT
The spatial distribution, abundance, and size variability of two pelagic tunicate species, Thetys vagina and Pyrosoma atlanticum, were examined from midwater trawl surveys to assess the historical
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Abstract Long-term variability in zooplankton 15N/14N was investigated in two species of calanoid copepods (Calanus pacificus and Eucalanus californicus) and two chaetognaths (Sagitta bierii and
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Thaliacea (Tunicata) are fragile pelagic organisms, switching between sexual and asexual reproduction during their life cycle, occasionally occurring in massive blooms. During these blooms they graze
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Interannual changes in the assemblages of hyperiid amphipods during the period 2002 to 2008 are analyzed for the first time, revealing a core contribution of the characteristic subtropical species in the California Current System, indicating a resilience of these key species to climatic events.
Long‐term fluctuations (1974‐99) of the salps Thalia democratica and Salpa fusiformis in the northwestern Mediterranean Sea: Relationships with hydroclimatic variability
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Investigation of the long-term variability of the salps Thalia democratica and Salpa fusiformis during the period 1974-1999 at a coastal site in the Bay of Villefranche-sur-mer stressed the importance of primary consumers as indicators of changes occurring in the marine system.
ZOOPLANKTON FUNCTIONAL GROUPS FROM THE CALIFORNIA CURRENT AND CLIMATE VARIABILITY DURING 1997-2013
Zooplankton plays an important role in recycling matter and energy trough the pelagic ecosystem. The California Current is one of the large marine ecosystems with high productivity and bio-physical
Coherence of long-term variations of zooplankton in two sectors of the California Current System
TLDR
Two tests for ecosystem shifts, a sequential algorithm and the cumulative sum of anomalies approach, failed to detect changes in 1976–1977 in total carbon biomass, displacement volume, or most individual major taxa, suggesting that aggregated biomass is an insensitive indicator of climate forcing.
Multi-decadal variations in stable N isotopes of California Current zooplankton
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Variability of δ15N in 3 species covaried with the average nitrate concentration in the mixed layer, suggesting altered nitrate utilization at the base of the food web as a primary mechanism underlying interannual changes in zooplankton isotopic content.
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References

SHOWING 1-10 OF 122 REFERENCES
Long-term stability of species composition in calanoid copepods off southern California
TLDR
Species composition was found to be stable over the 49 yr covered by the study, and the increased frequency of anomalous years following the 1976/1977 climatic regime shift may account for the difference in PSI means before and after the regime shift.
Linking nitrogen dynamics to climate variability off central California: a 51 year record based on 15N/14N in CalCOFI zooplankton
Abstract Long-term variability in zooplankton 15N/14N was investigated in two species of calanoid copepods (Calanus pacificus and Eucalanus californicus) and two chaetognaths (Sagitta bierii and
Long-term changes in zooplankton volumes in the California Current System - The Baja California region
"retrospeciive anaiysis oi zooplankton volumes (1951 to 1996) was performed for the area between Punta Baja (30°N) and Punta Abreojos (26 ?ON) in relatlon to the warming anomaly that has taken place
THALIACEA OF THE CALIFORNIA CURRENT REGION: RELATIONS TO TEMPERATURE, CHLOROPHYLL, CURRENTS, AND UPWELLING
Thaliacea are a major component of herbivorous zooplankton biomass in the upper layers of warm seas and are able to colonize areas where conditions are suitable at a faster rate than other
Decadal variability in abundances of the dominant euphausiid species in southern sectors of the California Current
Abstract Euphausiid abundance data from broadly based California Cooperative Oceanic Fisheries Investigation surveys in California and Baja California sectors of the California Current provided a
Climatic regime shifts and decadal-scale variability in calanoid copepod populations off southern California
Decadal-scale climatic regimes and the shifts between them have important impacts on marine ecosystems. Climatic regime shifts have been observed or hypothesized in the North Pacific basin in 1976‐77
Production of Fraser River sockeye salmon (Oncorhynchus nerka) in relation to decadal-scale changes in the climate and the ocean
TLDR
The response of Fraser River sockeye to climate changes may be a specific example of a more general response by a number of species of fishes in the Pacific and perhaps in other oceans.
Geographic Distribution and Relative Abundance of Salpidae off the Oregon Coast
Six species of salps were identified from 437 midwater trawl and 202 plankton net collections off Oregon from 1961 to 1964: Helicosalpa virgula, Iasis zonaria, Salpa fusiformis, Pegea confoederata,
Vertical distributions of macroplankton and micronekton in the Ligurian and Tyrrhenian seas (northwe
Abstract Vertical distributions and diel migrations at nineteen stations located in the Ligurian and Tyrrhenian Seas (northwestern Mediterranean) are described in detail and compared for the main
Interdecadal variation in developmental timing of Neocalanus plumchrus populations at Ocean Station P in the subarctic North Pacific
TLDR
A single copepod species, Neocalanus plumchrus (Marukawa), makes up much of the mesozooplankton biomass in the subarctic Pacific, and seasonal phasing of this annual maximum has shifted dramatically between 1956 and the present.
...
1
2
3
4
5
...