Climate-induced variability in Calanus marshallae populations

Baier, Christine T.

doi:10.1093/plankt/25.7.771

Cited by 87 publications

(77 citation statements)

References 51 publications

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“…Differences in zooplankton community structure may be linked to differential dependencies of specific zooplankton taxa on spring bloom phenology. Survival of early copepodites of large, lipid rich copepods such as Calanus finmarchicus or Calanus marshallae, is highest when their appearance matches the onset of the spring bloom (Baier and Napp, 2003). Thus, the timing of reproduction has to occur at a critical lag with phytoplankton spring phenology for their next generation to be recruited successfully (Baier and Napp, 2003;Broms and Melle, 2007;Soreide et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Survival of early copepodites of large, lipid rich copepods such as Calanus finmarchicus or Calanus marshallae, is highest when their appearance matches the onset of the spring bloom (Baier and Napp, 2003). Thus, the timing of reproduction has to occur at a critical lag with phytoplankton spring phenology for their next generation to be recruited successfully (Baier and Napp, 2003;Broms and Melle, 2007;Soreide et al, 2010). In contrast to other regions, over the Northeast shelf the mechanisms driving variability in spring dominant copepods, such as C. finmarchicus, remain elusive (Hare and Kane, 2012;Pershing et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Spring bloom dynamics and zooplankton biomass response on the US Northeast Continental Shelf

Friedland

Leaf

Kane

et al. 2015

Continental Shelf Research

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a b s t r a c tThe spring phytoplankton bloom on the US Northeast Continental Shelf is a feature of the ecosystem production cycle that varies annually in timing, spatial extent, and magnitude. To quantify this variability, we analyzed remotely-sensed ocean color data at two spatial scales, one based on ecologically defined sub-units of the ecosystem (production units) and the other on a regular grid (0.5°). Five units were defined: Gulf of Maine East and West, Georges Bank, and Middle Atlantic Bight North and South. The units averaged 47 Â 10 3 km 2 in size. The initiation and termination of the spring bloom were determined using change-point analysis with constraints on what was identified as a bloom based on climatological bloom patterns. A discrete spring bloom was detected in most years over much of the western Gulf of Maine production unit. However, bloom frequency declined in the eastern Gulf of Maine and transitioned to frequencies as low as 50% along the southern flank of the Georges Bank production unit. Detectable spring blooms were episodic in the Middle Atlantic Bight production units. In the western Gulf of Maine, bloom duration was inversely related to bloom start day; thus, early blooms tended to be longer lasting and larger magnitude blooms. We view this as a phenological mismatch between bloom timing and the "top-down" grazing pressure that terminates a bloom. Estimates of secondary production were available from plankton surveys that provided spring indices of zooplankton biovolume. Winter chlorophyll biomass had little effect on spring zooplankton biovolume, whereas spring chlorophyll biomass had mixed effects on biovolume. There was evidence of a "bottom up" response seen on Georges Bank where spring zooplankton biovolume was positively correlated with the concentration of chlorophyll. However, in the western Gulf of Maine, biovolume was uncorrelated with chlorophyll concentration, but was positively correlated with bloom start and negatively correlated with magnitude. This observation is consistent with both a "top-down" mechanism of control of the bloom and a "bottom-up" effect of bloom timing on zooplankton grazing. Our inability to form a consistent model of these relationships across adjacent systems underscores the need for further research.Published by Elsevier Ltd.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spring bloom dynamics and zooplankton biomass response on the US Northeast Continental Shelf

Friedland

Leaf

Kane

et al. 2015

Continental Shelf Research

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“…Early ice retreat and thinner ice will lead to an increase of irradiance in the water column and under the ice, which may shift the onset of ice algal and phytoplankton production to earlier in the season (Arrigo and van Dijken, 2011;Frey et al, 2011;Ji et al, 2013). Conversely, expanded areas of open water may delay the phytoplankton bloom due to wind-induced mixing delaying the formation of the seasonal pycnocline, as is apparently the case in the eastern Bering Sea (Baier and Napp, 2003;Bluhm and Gradinger, 2008;Hunt et al, 2011). Changes in timing of bloom events may have repercussions for herbivorous zooplankton and ice fauna species as the probability for a ''mismatch" increases if the sequential timing is altered for primary production blooms relative to life history events of herbivores that rely on energetic input from the blooms (e.g., for reproduction and recruitment; Baier and Napp, 2003;Søreide et al, 2010;Varpe, 2012;Daase et al, 2013).…”

Section: Effects Of Advective Changes On Primary Productionmentioning

confidence: 99%

“…Changes in timing of bloom events may have repercussions for herbivorous zooplankton and ice fauna species as the probability for a ''mismatch" increases if the sequential timing is altered for primary production blooms relative to life history events of herbivores that rely on energetic input from the blooms (e.g., for reproduction and recruitment; Baier and Napp, 2003;Søreide et al, 2010;Varpe, 2012;Daase et al, 2013). In the southeastern Bering Sea, a mis-match between the timing of blooms related to sea-ice retreat and the needs of hebivores appears to have severe negative impacts on the recruitment and subsequent abundance of large copepods and euphausiids (Baier and Napp, 2003;Hunt et al, 2011;in press;Renner et al, 2016).…”

Section: Effects Of Advective Changes On Primary Productionmentioning

confidence: 99%

Advection in polar and sub-polar environments: Impacts on high latitude marine ecosystems

Hunt

Drinkwater

Arrigo

et al. 2016

Progress in Oceanography

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a b s t r a c tWe compare and contrast the ecological impacts of atmospheric and oceanic circulation patterns on polar and sub-polar marine ecosystems. Circulation patterns differ strikingly between the north and south. Meridional circulation in the north provides connections between the sub-Arctic and Arctic despite the presence of encircling continental landmasses, whereas annular circulation patterns in the south tend to isolate Antarctic surface waters from those in the north. These differences influence fundamental aspects of the polar ecosystems from the amount, thickness and duration of sea ice, to the types of organisms, and the ecology of zooplankton, fish, seabirds and marine mammals. Meridional flows in both the North Pacific and the North Atlantic oceans transport heat, nutrients, and plankton northward into the Chukchi Sea, the Barents Sea, and the seas off the west coast of Greenland. In the North Atlantic, the advected heat warms the waters of the southern Barents Sea and, with advected nutrients and plankton, supports immense biomasses of fish, seabirds and marine mammals. On the Pacific side of the Arctic, cold waters flowing northward across the northern Bering and Chukchi seas during winter and spring limit the ability of boreal fish species to take advantage of high seasonal production there. Southward flow of cold Arctic waters into sub-Arctic regions of the North Atlantic occurs mainly through Fram Strait with less through the Barents Sea and the Canadian Archipelago. In the Pacific, the transport of Arctic waters and plankton southward through Bering Strait is minimal.In the Southern Ocean, the Antarctic Circumpolar Current and its associated fronts are barriers to the southward dispersal of plankton and pelagic fishes from sub-Antarctic waters, with the consequent evolution of Antarctic zooplankton and fish species largely occurring in isolation from those to the north. The Antarctic Circumpolar Current also disperses biota throughout the Southern Ocean, and as a result, the biota tends to be similar within a given broad latitudinal band. South of the Southern Boundary of the ACC, there is a large-scale divergence that brings nutrient-rich water to the surface. This divergence, along with more localized upwelling regions and deep vertical convection in winter, generates elevated nutrient levels throughout the Antarctic at the end of austral winter. However, such elevated nutrient levels do not support elevated phytoplankton productivity through the entire Southern Ocean, as iron concentrations are rapidly removed to limiting levels by spring blooms in deep waters. However, coastal http://dx

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“…In the Chukchi Sea, climate warming may result in a reduction of the input of large crustacean zooplankton, because the large Calanus copepods in the Bering Sea Water are vulnerable to warming sea temperatures and the loss of sea ice (Baier and Napp, 2003). During the warm period in the Bering Sea from 2001 to 2005, ice retreat came early and the production of C. marshallae/glacialis was limited .…”

Section: Mechanisms Suggesting Decreases In Productivitymentioning

confidence: 99%