Science · Environmental Change
how does permafrost thaw influence mercury mobilization in arctic rivers?
Permafrost soils in the Arctic contain large reservoirs of mercury bound to ancient organic matter. Research by Paul A. Schuster U.S. Geological Survey identifies permafrost as a significant store of
how is expansion of ocean oxygen minimum zones affecting fishery productivity?
The global expansion and intensification of oxygen minimum zones is reducing the volume of well-oxygenated habitat available to many commercially important species, with direct implications for fisheries productivity. Rebecca R.
do legacy pollutants interact with climate change to affect ecosystem recovery?
Legacy contaminants deposited decades ago continue to shape how ecosystems recover today. Research by Gerhard Wania at University of Toronto Scarborough shows that temperature-driven volatilization and altered transport pathways can
how does groundwater extraction influence inland wetland resilience to climate change?
Groundwater pumping alters the subsurface water table that sustains many inland wetlands, reducing their ability to buffer climate extremes. This connection matters because wetland resilience depends on consistent hydrological inputs
how will glacier retreat affect downstream freshwater nutrient dynamics?
Glacier retreat reshapes downstream freshwater nutrient dynamics by altering sources, transport processes, and biological responses. Observations from glaciologists show that diminishing ice changes the timing and composition of meltwater, with
how will soil salinization affect agricultural productivity under sea level rise?
Rising seas increase the likelihood that coastal soils will accumulate salts, with direct effects on plant water uptake, soil structure, and long-term land viability. Scientific analyses connect sea level rise
how might nitrogen deposition alter forest resilience to drought?
Atmospheric nitrogen deposition alters forest water relations and nutrient balances in ways that can both temporarily boost growth and ultimately reduce drought resilience. Human-driven increases in reactive nitrogen change soil
which mitigation strategies best preserve soil carbon under intensified agriculture?
Soil carbon is central to soil fertility, water retention and climate mitigation, yet agricultural intensification often reduces soil organic matter through deep tillage, residue removal and drainage. Rattan Lal, Ohio
how will shifting ocean currents influence nutrient distribution in coastal ecosystems?
Shifting ocean currents change how nutrients reach coastal waters by altering the balance between upwelling, horizontal advection, and vertical mixing. Where currents strengthen and drive upwelling, nutrient-rich deep water is
what are implications of declining insect biomass for nutrient cycling?
Declines in insect biomass disrupt fundamental processes that recycle nutrients through ecosystems. Insects accelerate decomposition by breaking down leaf litter and animal remains, fragmenting organic matter and stimulating microbial activity.