skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Functional divergence in nitrogen uptake rates explains diversity–productivity relationship in microalgal communities

Journal Article · · Ecosphere
DOI:https://doi.org/10.1002/ecs2.2228· OSTI ID:1439901
 [1];  [2];  [1];  [1]
  1. Environmental Sciences Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA
  2. University of California at San Diego La Jolla California 92093 USA

The relationship between biodiversity and productivity has emerged as a central theme in ecology. Mechanistic explanations for this relationship suggest that the role organisms play in the ecosystem (i.e., niches or functional traits) is a better predictor of ecosystem stability and productivity than taxonomic richness. Here, we tested the capacity of functional diversity in nitrogen uptake in experimental microalgal communities to predict the complementarity effect (CE) and selection effect (SE) of biodiversity on productivity. We grew five algal species as monocultures and as polycultures in pairwise combinations in homogeneous (ammonium, nitrate, or urea alone) and heterogeneous nitrogen (mixed nitrogen) environments to determine whether complementarity between species may be enhanced in heterogeneous environments. We show that the positive diversity effects on productivity in heterogeneous environments resulted from complementarity effects with no positive contribution by species–specific SEs. Positive biodiversity effects in homogeneous environments, when present (nitrate and urea treatments but not ammonium), were driven both by CE and SE. Our results suggest that functional diversity increases species complementarity and productivity mainly in heterogeneous resource environments. Furthermore, these results provide evidence that the positive effect of functional diversity on community productivity depends on the diversity of resources present in the environment.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
DE‐AC05‐00OR22725; AC05-00OR22725
OSTI ID:
1439901
Alternate ID(s):
OSTI ID: 1439153; OSTI ID: 1454894
Journal Information:
Ecosphere, Journal Name: Ecosphere Vol. 9 Journal Issue: 5; ISSN 2150-8925
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

References (54)

The Paradox of the Plankton journal May 1961
Environmental and trait variability constrain community structure and the biodiversity-productivity relationship journal June 2016
Biodiversity improves water quality through niche partitioning journal April 2011
Ammonium uptake and growth limitation in marine phytoplankton journal November 2007
Variation in nitrogen-15 natural abundance and nitrogen uptake traits among co-occurring alpine species: do species partition by nitrogen form? journal February 2002
Hidden treatments in ecological experiments: re-evaluating the ecosystem function of biodiversity journal May 1997
The functional role of producer diversity in ecosystems journal March 2011
Genotypic richness and dissimilarity opposingly affect ecosystem functioning: Genotypic diversity and ecosystem functioning journal March 2011
Functional identity is the main driver of diversity effects in young tree communities journal April 2016
Biodiversity effects in the wild are common and as strong as key drivers of productivity journal September 2017
Think ratio! A stoichiometric view on biodiversity–ecosystem functioning research journal September 2014
Resource availability and biodiversity effects on the productivity, temporal variability and resistance of experimental algal communities journal September 2006
Diatoms and biomonitoring: should cell size be accounted for? journal July 2006
Partitioning selection and complementarity in biodiversity experiments journal July 2001
Heterogeneity in Nitrogen Sources Enhances Productivity and Nutrient Use Efficiency in Algal Polycultures journal February 2018
Phytoplankton-Specific Response to Enrichment of Phosphorus-Rich Surface Waters with Ammonium, Nitrate, and Urea journal January 2013
Human-caused environmental change: Impacts on plant diversity and evolution journal May 2001
Apparent plasticity in functional traits determining competitive ability and spatial distribution: a case from desert journal July 2015
Effects of competition on phylogenetic signal and phenotypic plasticity in plant functional traits journal August 2012
Plant Preference for Ammonium versus Nitrate: A Neglected Determinant of Ecosystem Functioning? journal July 2012
A guide for using functional diversity indices to reveal changes in assembly processes along ecological gradients journal November 2012
Onset of the aerobic nitrogen cycle during the Great Oxidation Event journal February 2017
THE ECOLOGICAL CONSEQUENCES OF CHANGES IN BIODIVERSITY: A SEARCH FOR GENERAL PRINCIPLES 101 journal July 1999
Global analysis of nitrogen and phosphorus limitation of primary producers in freshwater, marine and terrestrial ecosystems journal December 2007
Functional diversity: back to basics and looking forward journal June 2006
Trait diversity enhances yield in algal biofuel assemblages journal March 2014
Industrial-strength ecology: trade-offs and opportunities in algal biofuel production journal September 2013
The Influence of Functional Diversity and Composition on Ecosystem Processes journal August 1997
Economic construction and operation of hectare-scale wastewater treatment enhanced pond systems journal July 2015
Microalga Scenedesmus obliquus as a potential source for biodiesel production journal March 2009
Impacts of plant diversity on biomass production increase through time because of species complementarity journal November 2007
The Statistical Inevitability of Stability‐Diversity Relationships in Community Ecology journal March 1998
Resource-based niches provide a basis for plant species diversity and dominance in arctic tundra journal January 2002
Environment-enhancing algal biofuel production using wastewaters journal August 2014
Does functional redundancy exist? journal March 2004
Evidence for a three-way trade-off between nitrogen and phosphorus competitive abilities and cell size in phytoplankton journal November 2011
Effects of nitrogen sources on cell growth and lipid accumulation of green alga Neochloris oleoabundans journal September 2008
Niche complementarity due to plasticity in resource use: plant partitioning of chemical N forms journal November 2010
Seaweed Diversity Enhances Nitrogen Uptake via Complementary use of Nitrate and Ammonium journal September 2006
Limiting Resources and the Regulation of Diversity in Phytoplankton Communities journal May 2001
Effects of Algal Diversity on the Production of Biomass in Homogeneous and Heterogeneous Nutrient Environments: A Microcosm Experiment journal July 2008
Influence of nitrogen sources on biomass productivity of microalgae Scenedesmus bijugatus journal March 2013
Pluses and minuses of ammonium and nitrate uptake and assimilation by phytoplankton and implications for productivity and community composition, with emphasis on nitrogen-enriched conditions: Pluses and minuses of NH4+ journal October 2015
Human Alteration of the Global Nitrogen Cycle: Sources and Consequences journal August 1997
System and method for research-scale outdoor production of microalgae and cyanobacteria journal August 2014
Biodiversity and ecosystem stability across scales in metacommunities journal February 2016
FDiversity: an Integrated Tool to Estimate and Analyze Functional Diversity journal April 2011
Plant diversity and ecosystem productivity: Theoretical considerations journal March 1997
Biovolume Calculation for Pelagic and Benthic Microalgae journal April 1999
A distance-based framework for measuring functional diversity from multiple traits journal January 2010
A user's guide to functional diversity indices journal August 2010
Functional traits explain ecosystem function through opposing mechanisms journal June 2017
YELLOW-GREEN ALGAE WITH CHLOROPHYLLIDE C 1, 2 journal March 1972
High Productivity in Grassland Ecosystems: Effected by Species Diversity or Productive Species? journal October 1997