Effect of phosphorus limitation on elemental composition and stable carbon isotope fractionation in a marine diatom growing under different CO2 concentrations

Gervais, Frank; Riebesell, Ulf

doi:10.4319/lo.2001.46.3.0497

Cited by 67 publications

(48 citation statements)

References 32 publications

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“…Likewise, Hirons et al (2001) suggest that, based on the stable isotope ratios of carbon and nitrogen in pinnipeds, there has been a decrease in production rates in the Gulf of Alaska and eastern Bering Sea. The interpretation of primary production rates from stable isotope ratios of carbon may be more complicated than previously recognized (Tortell et al, 2000;Gervais and Riebesell, 2001), and increases in water temperature or changes in the species composition of the phytoplankton may have influenced the change in d 13 C that Schell observed (Libes, 1992). Additionally, in the case of Hirons et al, samples were from animals from both the Gulf of Alaska and the Bering Sea, thus complicating the interpretation of the data.…”

Section: Evidence For Change and Mechanismsmentioning

confidence: 97%

Climate change and control of the southeastern Bering Sea pelagic ecosystem

Hunt

Stabeno

Walters

et al. 2002

Deep Sea Research Part II: Topical Studies in Oceanography

498

385

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We propose a new hypothesis, the Oscillating Control Hypothesis (OCH), which predicts that pelagic ecosystem function in the southeastern Bering Sea will alternate between primarily bottom-up control in cold regimes and primarily top-down control in warm regimes. The timing of spring primary production is determined predominately by the timing of ice retreat. Late ice retreat (late March or later) leads to an early, ice-associated bloom in cold water (e.g., 1995, 1997, 1999), whereas no ice, or early ice retreat before mid-March, leads to an open-water bloom in May or June in warm water (e.g., 1996, 1998, 2000). Zooplankton populations are not closely coupled to the spring bloom, but are sensitive to water temperature. In years when the spring bloom occurs in cold water, low temperatures limit the production of zooplankton, the survival of larval/juvenile fish, and their recruitment into the populations of species of large piscivorous fish, such as walleye pollock (Theragra chalcogramma), Pacific cod (Gadus macrocephalus) and arrowtooth flounder (Atheresthes stomias). When continued over decadal scales, this will lead to bottom-up limitation and a decreased biomass of piscivorous fish. Alternatively, in periods when the bloom occurs in warm water, zooplankton populations should grow rapidly, providing plentiful prey for larval and juvenile fish. Abundant zooplankton will support strong recruitment of fish and will lead to abundant predatory fish that control forage fish, including, in the case of pollock, their own juveniles. Piscivorous marine birds and pinnipeds may achieve higher production of young and survival in cold regimes, when there is less competition from large piscivorous fish for coldwater forage fish such as capelin (Mallotus villosus). Piscivorous seabirds and pinnipeds also may be expected to have high productivity in periods of transition from cold regimes to warm regimes, when young of large predatory species of fish are numerous enough to provide forage. The OCH predicts that the ability of large predatory fish populations to sustain fishing pressure will vary between warm and cold regimes.The OCH points to the importance of the timing of ice retreat and water temperatures during the spring bloom for the productivity of zooplankton, and the degree and direction of coupling between zooplankton and forage fish. in the biomass of large piscivorous fish and a concurrent decline in the biomass of forage fish, including age-1 walleye pollock, particularly over the southern portion of the shelf. Populations of northern fur seals (Callorhinus ursinus) and seabirds such as kittiwakes (Rissa spp.) at the Pribilof Islands have declined, most probably in response to a diminished prey base. The available evidence suggests that these changes are unlikely the result of a decrease in total annual new primary production, though the possibility of reduced post-bloom production during summer remains. An ecosystem approach to management of the Bering Sea and its fisheries is of great importance if all o...

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Section: Evidence For Change and Mechanismsmentioning

confidence: 97%

Climate change and control of the southeastern Bering Sea pelagic ecosystem

Hunt

Stabeno

Walters

et al. 2002

Deep Sea Research Part II: Topical Studies in Oceanography

498

385

View full text Add to dashboard Cite

show abstract

“…5b) while lignin and cutin data indicated, a negligible input of land-derived material. Primary factors determining the fractionation of stable carbon isotopes in phytoplankton are several and include CO 2 aq concentration, δ 13 Caq, growth rate, cell size, cell shape, light and nutrient availability (Gervais and Riebesell, 2001;Laws et al, 1997b;Popp et al, 1998;Rau et al, 1996). Our understanding about isotopic fractionation has been historically achieved via laboratory experiments designed to test each factor under controlled conditions.…”

Section: Source Of the Pom (> 10 µM) Fractionmentioning

confidence: 99%

Carbon geochemistry of plankton-dominated samples in the Laptev and East Siberian shelves: contrasts in suspended particle composition

et al. 2017

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Abstract. Recent Arctic studies suggest that sea ice decline and permafrost thawing will affect phytoplankton dynamics and stimulate heterotrophic communities. However, in what way the plankton composition will change as the warming proceeds remains elusive. Here we investigate the chemical signature of the plankton-dominated fraction of particulate organic matter (POM) collected along the Siberian Shelf. POM (> 10 µm) samples were analysed using molecular biomarkers (CuO oxidation and IP 25 ) and dual-carbon isotopes (δ 13 C and 14 C

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“…Most likely, changes in CO 2 availability will affect primary producers directly, although this appears to be highly species dependent and may not be the case for all organisms (Nielsen et al 2010;Gervais and Riebesell 2001;Burkhardt et al 1999;Urabe and Waki 2009;Urabe et al 2003). The high CO 2 availability to primary producers may affect their quality as food for herbivorous consumers, as the increasing carbon availability has the potential to change the balance (stoichiometry) of nutrients in primary producers thus possibly leading to limitations in other essential nutrients, such as nitrogen and phosphorus.…”

Section: Introductionmentioning

confidence: 99%

Increased carbon dioxide availability alters phytoplankton stoichiometry and affects carbon cycling and growth of a marine planktonic herbivore

et al. 2012

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Rising levels of CO 2 in the atmosphere have led to increased CO 2 concentrations in the oceans. This enhanced carbon availability to the marine primary producers has the potential to change their nutrient stoichiometry, and higher carbon-to-nutrient ratios are expected. As a result, the quality of the primary producers as food for herbivores may change. Here, we present experimental work showing the effect of feeding Rhodomonas salina grown under different pCO 2 (200, 400 and 800 latm) on the copepod Acartia tonsa. The rate of development of copepodites decreased with increasing CO 2 availability to the algae. The surplus carbon in the algae was excreted by the copepods, with younger stages (copepodites) excreting most of their surplus carbon through respiration and adult copepods excreting surplus carbon mostly as DOC. We consider the possible consequences of different excretory pathways for the ecosystem. A continued increase in the CO 2 availability for primary production, together with changes in the nutrient loading of coastal ecosystems, may cause changes in the trophic links between primary producers and herbivores.

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Effect of phosphorus limitation on elemental composition and stable carbon isotope fractionation in a marine diatom growing under different CO2 concentrations

Cited by 67 publications

References 32 publications

Climate change and control of the southeastern Bering Sea pelagic ecosystem

Climate change and control of the southeastern Bering Sea pelagic ecosystem

Carbon geochemistry of plankton-dominated samples in the Laptev and East Siberian shelves: contrasts in suspended particle composition

Increased carbon dioxide availability alters phytoplankton stoichiometry and affects carbon cycling and growth of a marine planktonic herbivore

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