Browsing by Author "Richardson, Curtis J"
Now showing items 1-13 of 13
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An ecological perspective on nanomaterial impacts in the environment.
(J Environ Qual, 2010-11)Growing concerns over the potential for unintended, adverse consequences of engineered nanoparticles (ENPs) in the environment have generated new research initiatives focused on understanding the ecological effects of ENPs. ... -
Connecting differential responses of native and invasive riparian plants to climate change and environmental alteration.
(Ecol Appl, 2015-04)Climate change is predicted to impact river systems in the southeastern United States through alterations of temperature, patterns of precipitation and hydrology. Future climate scenarios for the southeastern United States ... -
Differential nutrient limitation of soil microbial biomass and metabolic quotients (qCO2): is there a biological stoichiometry of soil microbes?
(PLoS One, 2013)BACKGROUND: Variation in microbial metabolism poses one of the greatest current uncertainties in models of global carbon cycling, and is particularly poorly understood in soils. Biological Stoichiometry theory describes ... -
Drained coastal peatlands: A potential nitrogen source to marine ecosystems under prolonged drought and heavy storm events-A microcosm experiment.
(Sci Total Environ, 2016-10-01)Over the past several decades there has been a massive increase in coastal eutrophication, which is often caused by increased runoff input of nitrogen from landscape alterations. Peatlands, covering 3% of land area, have ... -
Ecological restoration of rich fens in Europe and North America: from trial and error to an evidence-based approach.
(Biol Rev Camb Philos Soc, 2015-02)Fens represent a large array of ecosystem services, including the highest biodiversity found among wetlands, hydrological services, water purification and carbon sequestration. Land-use change and drainage has severely damaged ... -
Emerging contaminant or an old toxin in disguise? Silver nanoparticle impacts on ecosystems.
(Environ Sci Technol, 2014-05-06)The use of antimicrobial silver nanoparticles (AgNPs) in consumer-products is rising. Much of these AgNPs are expected to enter the wastewater stream, with up to 10% of that eventually released as effluent into aquatic ecosystems ... -
Legacy source of mercury in an urban stream-wetland ecosystem in central North Carolina, USA.
(Chemosphere, 2015-11)In the United States, aquatic mercury contamination originates from point and non-point sources to watersheds. Here, we studied the contribution of mercury in urban runoff derived from historically contaminated soils and ... -
Low concentrations of silver nanoparticles in biosolids cause adverse ecosystem responses under realistic field scenario.
(PLoS One, 2013)A large fraction of engineered nanomaterials in consumer and commercial products will reach natural ecosystems. To date, research on the biological impacts of environmental nanomaterial exposures has largely focused ... -
Low-severity fire as a mechanism of organic matter protection in global peatlands: Thermal alteration slows decomposition.
(Global change biology, 2020-07)Worldwide, regularly recurring wildfires shape many peatland ecosystems to the extent that fire-adapted species often dominate plant communities, suggesting that wildfire is an integral part of peatland ecology rather than ... -
Neotropical peatland methane emissions along a vegetation and biogeochemical gradient.
(PLoS One, 2017)Tropical wetlands are thought to be the most important source of interannual variability in atmospheric methane (CH4) concentrations, yet sparse data prevents them from being incorporated into Earth system models. This problem ... -
Restoring diversity after cattail expansion: disturbance, resilience, and seasonality in a tropical dry wetland.
(Ecol Appl, 2011-04)As the human footprint expands, ecologists and resource managers are increasingly challenged to explain and manage abrupt ecosystem transformations (i.e., regime shifts). In this study, we investigated the role of a mechanical ... -
Top-down control of methane emission and nitrogen cycling by waterfowl.
(Ecology, 2017-01)Aquatic herbivores impose top-down control on the structure of wetland ecosystems, but the biogeochemical consequences of herbivory on methane (CH4 ) and nitrogen (N) are poorly known. To investigate the top-down effects ... -
Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance.
(Nature communications, 2018-09-07)Peatlands represent large terrestrial carbon banks. Given that most peat accumulates in boreal regions, where low temperatures and water saturation preserve organic matter, the existence of peat in (sub)tropical regions ...
