Prevalence of phytoplankton limitation by both nitrogen and phosphorus related to nutrient stoichiometry, land use, and primary producer biomass across the northeastern United States

Lewis, Abigail S. L.; Kim, Brian S.; Edwards, Hailee L.; Wander, Heather L.; Garfield, Claire; Murphy, Heather; Poulin, Noah D.; Princiotta, Sarah D.; Rose, Kevin C.; Taylor, Alex E.; Weathers, Kathleen C.; Wigdahl‐Perry, Courtney R.; Yokota, Kiyoko; Richardson, David C.; Bruesewitz, Denise A.

doi:10.1080/20442041.2019.1664233

Cited by 26 publications

(25 citation statements)

References 32 publications

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“…Emergent model simulation patterns inform our understanding of how lake ecosystems may function given our process-based knowledge. For example, in the scenario testing (section 3.4), annual maximum chlorophyll-a concentration increased more in the combined increased external TP and TN load scenario than in the increased external TP alone scenario (Figure 6), suggesting that co-limitation or serial limitation (Lewis et al, 2020) may play important roles governing chlorophyll-a concentrations in this ecosystem.…”

Section: Water Resources Researchmentioning

confidence: 98%

Differential Responses of Maximum Versus Median Chlorophyll‐a to Air Temperature and Nutrient Loads in an Oligotrophic Lake Over 31 Years

Ward

Steele

Weathers

et al. 2020

Water Resources Research

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Globally, phytoplankton abundance is increasing in lakes as a result of climate change and land‐use change. The relative importance of climate and land‐use drivers has been examined primarily for mesotrophic and eutrophic lakes. However, oligotrophic lakes show different sensitivity to climate and land‐use drivers than mesotrophic and eutrophic lakes, necessitating further exploration of the relative contribution of the two drivers of change to increased phytoplankton abundance. Here, we investigated how air temperature (a driver related to climate change) and nutrient load (a driver related to land‐use and climate change) interact to alter water quality in oligotrophic Lake Sunapee, New Hampshire, USA. We used long‐term data and the one‐dimensional hydrodynamic General Lake Model (GLM) coupled with Aquatic EcoDyanmics (AED) modules to simulate water quality. Over the 31‐year simulation, summer median chlorophyll‐a concentration was positively associated with summer air temperature, whereas annual maximum chlorophyll‐a concentration was positively associated with the previous 3 years of external phosphorus load. Scenario testing demonstrated a 2°C increase in air temperature significantly increased summer median chlorophyll‐a concentration, but not annual maximum chlorophyll‐a concentration. For both maximum and median chlorophyll‐a concentration, doubling external nutrient loads of total nitrogen and total phosphorus at the same time, or doubling phosphorus alone, resulted in a significant increase. This study highlights the importance of aligning lake measurements with the ecosystem metrics of interest, as maximum chlorophyll‐a concentration may be more uniquely sensitive to nutrient load and that typical summer chlorophyll‐a concentration may increase due to warming alone.

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Section: Water Resources Researchmentioning

confidence: 98%

Differential Responses of Maximum Versus Median Chlorophyll‐a to Air Temperature and Nutrient Loads in an Oligotrophic Lake Over 31 Years

Ward

Steele

Weathers

et al. 2020

Water Resources Research

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“…The overall design of our in situ incubation experiment was based on [26], utilizing 15.2 cm × 15.2 cm Bitran ® polyethylene bags (Thermo Fisher Scientific, Waltham, MA, USA) as mesocosms, deployed in floating racks at a near-shore lake surface ( Figure 1). We collected~20 L and 2 L of surface lake water containing phytoplankton from mesotrophic Otsego Lake, New York, USA, on 6 and 13 July 2016, respectively.…”

Section: Methodsmentioning

confidence: 99%

Lake Phytoplankton Assemblage Altered by Irregularly Shaped PLA Body Wash Microplastics but Not by PS Calibration Beads

Yokota

Mehlrose

2020

Water

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Microplastics are an emerging environmental pollutant, whose global ubiquity is becoming increasingly evident. Conventional wastewater treatment does not completely remove them, and there are growing concerns about microplastics in source water and post-treatment drinking water. Microplastics have been reported to alter the development, physiology, and behavior of various aquatic organisms; however, limited knowledge exists on their effect on natural phytoplankton communities. Many studies also use uniformly spherical plastic beads, while most scrub particles in consumer products and secondary microplastics in the environment have various shapes and sizes. We tested the effects of two types of microplastics, 50 µm polystyrene (PS) calibration beads and polylactic acid (PLA) plastic body wash scrub particles, and one type of plant-derived body wash scrub particle on a natural phytoplankton assemblage through a 7-day incubation experiment in a temperate, mesotrophic lake. The calibration beads and the plant-derived particles generally did not alter the taxonomic composition of the phytoplankton in the mesocosms, while the PLA body wash microplastics eliminated cryptophytes (p < 0.001) and increased chrysophytes (p = 0.041). Our findings demonstrate differential effects of irregularly shaped PLA body wash microplastics vs. PS calibration beads on lake phytoplankters and empirically support potential bottom-up alteration of the aquatic food web by secondary microplastics.

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“…Our results of the GPLake-S model showed it to be capable of distinguishing between different types of limitation (N, P, N+P and light limitation) commonly described in real world lake systems (see e.g. Lewis et al, 2020), while predicting the resulting chl-a as a measure of phytoplankton abundance.…”

Section: Towards a Generically Parameterized Model Of Lake Eutrophication That Takes Stoichiometric Ratios And Constraints Into Accountmentioning

confidence: 72%

“…phosphorus, nitrogen, both phosphorus and nitrogen, or light, of the target ecosystem; 3) can be parameterized with data sources from lab, field and model studies; 4) is easy to use and requires a limited number of inputs that are available to water quality managers. While eutrophication is often considered as a singular pressure, the body of evidence of it being two conjoint pressures in freshwater systems (namely P and N pollution) have become undeniable (Paerl et al, 2016b;Lewis et al, 2020). While ecological resource competition theory has long delved into such concepts, the link towards chl-a prediction using these models has remained largely absent.…”

Section: Towards a Generically Parameterized Model Of Lake Eutrophication That Takes Stoichiometric Ratios And Constraints Into Accountmentioning

confidence: 99%

“…Schindler et al, 2016 andPaerl et al, 2016b). Increasing evidence of colimitation of lake systems across large spatial scales (Lewis et al, 2020) is suggesting that both nutrients can be limiting to phytoplankton abundance, and therefore can be relevant to consider when diagnosing lake eutrophication issues. GPLake-S allows a first order estimate of chl-a while allowing for colimitation (as well as single nutrient limitation), offering a simple, mechanistic tool to managers to determine the state of their lake given the nutrient loading (see Appendix 4.7 for a simple Excel GPLake-S tool).…”

Section: Relevance For Water Management and Policymentioning

confidence: 99%

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Know your limits : Modelling consumer-resource interactions to derive nutrient thresholds for a sustainable Anthropocene

Chang¹

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Prevalence of phytoplankton limitation by both nitrogen and phosphorus related to nutrient stoichiometry, land use, and primary producer biomass across the northeastern United States

Cited by 26 publications

References 32 publications

Differential Responses of Maximum Versus Median Chlorophyll‐a to Air Temperature and Nutrient Loads in an Oligotrophic Lake Over 31 Years

Differential Responses of Maximum Versus Median Chlorophyll‐a to Air Temperature and Nutrient Loads in an Oligotrophic Lake Over 31 Years

Lake Phytoplankton Assemblage Altered by Irregularly Shaped PLA Body Wash Microplastics but Not by PS Calibration Beads

Know your limits : Modelling consumer-resource interactions to derive nutrient thresholds for a sustainable Anthropocene

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