Ecological Stoichiometry, Biogeochemical Cycling, Invasive Species, and Aquatic Food Webs: San Francisco Estuary and Comparative Systems

Glibert, Patricia M.; Fullerton, David; Burkholder, JoAnn M.; Cornwell, Jeffrey C.; Kana, Todd M.

doi:10.1080/10641262.2011.611916

Cited by 151 publications

(125 citation statements)

References 344 publications

Supporting

Mentioning

120

Contrasting

Order By: Relevance

“…They attributed summer diatom blooms in Suisun Bay prior to 1987 to accumulation of phytoplankton biomass rather than a high growth rate (Cloern 1979;Cole and Cloern 1984 reported by Cole and Cloern (1984); the slight seasonal increase that we observed for P B M(24) occurred in parallel with the movement of the sampling area from Central Bay to Suisun Bay and the western Delta Cole and Cloern (1984) for spring. It has been hypothesized that growth rates of phytoplankton in the northern SFE have potentially decreased as a result of increased NH 4 loading (Dugdale et al 2007;, contaminants (Brooks et al 2012), and shifts in phytoplankton community composition (Lehman 2000;Glibert et al 2011). The decline in both P (24) reported by Alpine and Cloern (1992) was much higher than other estimates of P B M(24) reported for the SFE (Table 1) but similar to values reported for some other estuaries (e.g., Pennock and Sharp 1986).…”

Section: Discussioncontrasting

confidence: 53%

“…4) and carbon/chlorophyll by . As noted by others (e.g., Pennock and Sharp 1986;Keller 1988;Shaw and Purdie 2001;Brush et al 2002), seasonal, interannual, and long-term shifts in phytoplankton community composition from diatoms to smaller flagellates (as has occurred in the northern SFE, Lehman 1996Lehman , 2000Glibert et al 2011) are a potentially important driver of the observed changes in carbon/chlorophyll, P B M(24) , and y. Accurate estimates of pelagic primary production are critical for effective management of resources in any highly perturbed coastal ecosystem, but particularly critical for the northern SFE, where several populations of pelagic fishes have collapsed (Sommer et al 2007).…”

Section: Discussionmentioning

confidence: 98%

“…Smaller autotrophs including flagellates and cyanobacteria now appear to dominate the autotrophic community (Lehman 2000;Glibert et al 2011). Phytoplankton community structure was likely altered via size-selective grazing by the clams (Werner and Hollibaugh 1993) although additional drivers, including pesticides (Brooks et al 2012), changing nitrogen-to-phosphorus ratio (Glibert et al 2011), and increased ammonium loads (Dugdale et al 2007;Glibert et al 2011;) have also been implicated. At the same time, reduced sediment loads to the northern SFE, a consequence of damming upstream tributaries (Jassby 2008;Schoellhamer 2011) has resulted in increased water transparency and more favorable conditions for phytoplankton growth.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reevaluating the Generality of an Empirical Model for Light-Limited Primary Production in the San Francisco Estuary

Parker

Kimmerer

Lidström

2012

Estuaries and Coasts

View full text Add to dashboard Cite

Depth-integrated primary production (ΣP, in grams of carbon per square meter per day) was measured using 14 C in the northern San Francisco Estuary (SFE) from March through August of 2006 and 2007. Determinations of ΣP were then used to calibrate a published light-utilization model that relates ΣP to a composite parameter of chlorophyll, solar irradiance, and photic zone depth. The resultant calibration coefficient, y, varied by a factor of nearly two between 2006 and 2007 and was lower than determined in previous calibrations for the estuary. The now chronically low chlorophyll concentrations in the SFE have resulted in lower predictive power of the lightutilization model. The variation in y was likely the result of interannual variation in phytoplankton assimilation number. These results suggest that using a single y may yield large errors in estimated estuarine production when applied overbroad spatial and temporal scales. Given the food-limited condition of the SFE, it appears that direct measurements of primary production are necessary for accurately characterizing the base of the estuarine food web.

show abstract

Section: Discussioncontrasting

confidence: 53%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reevaluating the Generality of an Empirical Model for Light-Limited Primary Production in the San Francisco Estuary

Parker

Kimmerer

Lidström

2012

Estuaries and Coasts

View full text Add to dashboard Cite

show abstract

“…); otherwise they cannot capture the synergistic/cooperative nature of the interactions. In addition, variability in stoichiometry is an important feature in simulating the dynamics of predation (Grover, 2003;Mitra and Flynn, 2005;Glibert et al, 2011). In the simulations presented here, the MNFs did not win by eating their competitors (eating the HNFs or nonphagotrophic microalgae; cf.…”

Section: Interpreting the Simulationsmentioning

confidence: 95%

“…The interplay between nutrient stoichiometry, ecosystem maturity and success of mixotrophy also helps to explain why eutrophication is often associated with mixotrophic HABs and EDABs (Burkholder et al, 2008;Glibert and Burkholder, 2011;Burkholder and Glibert, 2013). It also explains why many offshore mixotroph-dominated bloom events are difficult to relate to land-based nutrient sources when, in fact, they are related Harrison et al, 2011).…”

Section: Climate Change Eutrophication and Mixotrophymentioning

confidence: 99%

The role of mixotrophic protists in the biological carbon pump

et al. 2014

View full text Add to dashboard Cite

Abstract. The traditional view of the planktonic food web describes consumption of inorganic nutrients by photoautotrophic phytoplankton, which in turn supports zooplankton and ultimately higher trophic levels. Pathways centred on bacteria provide mechanisms for nutrient recycling. This structure lies at the foundation of most models used to explore biogeochemical cycling, functioning of the biological pump, and the impact of climate change on these processes. We suggest an alternative new paradigm, which sees the bulk of the base of this food web supported by protist plankton communities that are mixotrophic -combining phototrophy and phagotrophy within a single cell. The photoautotrophic eukaryotic plankton and their heterotrophic microzooplankton grazers dominate only during the developmental phases of ecosystems (e.g. spring bloom in temperate systems). With their flexible nutrition, mixotrophic protists dominate in more-mature systems (e.g. temperate summer, established eutrophic systems and oligotrophic systems); the more-stable water columns suggested under climate change may also be expected to favour these mixotrophs. We explore how such a predominantly mixotrophic structure affects microbial trophic dynamics and the biological pump. The mixotroph-dominated structure differs fundamentally in its flow of energy and nutrients, with a shortened and potentially more efficient chain from nutrient regeneration to primary production. Furthermore, mixotrophy enables a direct conduit for the support of primary production from bacterial production. We show how the exclusion of an explicit mixotrophic component in studies of the pelagic microbial communities leads to a failure to capture the true dynamics of the carbon flow. In order to prevent a misinterpretation of the full implications of climate change upon biogeochemical cycling and the functioning of the biological pump, we recommend inclusion of multi-nutrient mixotroph models within ecosystem studies.

show abstract

Phosphorus availability and turnover in the Chesapeake Bay: Insights from nutrient stoichiometry and phosphate oxygen isotope ratios

Bai

Bear

et al. 2017

JGR Biogeosciences

View full text Add to dashboard Cite

Understanding phosphorus (P) availability and its control on eutrophication in the Chesapeake Bay is complicated by variable sources and biogeochemical reactions transforming P forms. We investigated seasonal and spatial variability in P limitation and biological utilization in the Bay using nutrient stoichiometry (of both dissolved and particulate forms), phosphate oxygen isotope ratios, and alkaline phosphatase activity at three sites along the salinity gradient. We demonstrate that particulate nutrient ratios can be used as indicators of nutrient limitation in the Bay and suggest strong seasonal and spatial variability in P availability: the surface water is P limiting in spring, but this condition is alleviated in summer and in the deeper waters. Variability in P limitation is well reflected in the trends of phosphate oxygen isotope composition (δ18OP), with values approaching isotopic equilibrium under P limiting conditions, suggesting rapid biological P turnover. Furthermore δ18OP values suggest multiple phosphate sources including remobilization of terrestrial inorganic P phases and remineralization of organic P and P from both sources is sufficiently cycled by microorganisms, suggested by the extensive equilibrium oxygen isotope exchange. Our results further suggest high P utilization in the deeper euphotic zone where nutrients are abundant, raising caution on studying nutrient availability and limitation only in the surface water.

show abstract

Ecological Stoichiometry, Biogeochemical Cycling, Invasive Species, and Aquatic Food Webs: San Francisco Estuary and Comparative Systems

Cited by 151 publications

References 344 publications

Reevaluating the Generality of an Empirical Model for Light-Limited Primary Production in the San Francisco Estuary

Reevaluating the Generality of an Empirical Model for Light-Limited Primary Production in the San Francisco Estuary

The role of mixotrophic protists in the biological carbon pump

Phosphorus availability and turnover in the Chesapeake Bay: Insights from nutrient stoichiometry and phosphate oxygen isotope ratios

Contact Info

Product

Resources

About