Sediment from retreating, land-terminating glaciers contains proportionally fewer micronutrients such as iron and manganese, reducing the glaciers’ value to microorganisms at the base of the food web.
food webs
Posted inNews
Marine Heat Waves Slow the Ocean’s Carbon Flow
When plankton find themselves in hot water, organic matters stalls at the surface and disrupts transport of carbon to the deep ocean.
Posted inResearch Spotlights
Where Do Antarctic Submarine Canyons Get Their Marine Life?
A new study investigates how much of the phytoplankton in the Palmer Deep submarine canyon is homemade and how much is delivered.
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El ADN de los sedimentos lacustres revelan el impacto de los peces introducidos
La trucha no nativa ha alterado la diversidad del zooplancton que habita en los lagos de gran elevación.
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DNA in Lake Sediment Reveals the Impact of Introduced Fish
Non-native trout have altered the diversity of zooplankton that live in high-elevation lakes.
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Hungry Stingrays Shift Serious Amounts of Sediment
While digging for food on estuary bottoms, rays push around literally tons of sediment, changing their habitat in profound ways.
Posted inNews
Toxic Metal on the Rise in the Baltic Sea
Postwar reconstruction is likely the cause of elevated thallium levels, but low-oxygen, high-sulfide conditions keep the material, which is extremely dangerous to mammalian health, from moving into the human food chain.
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Arctic Warming Triggers Abrupt Ecosystem Shift in North America’s Deepest Lake
Great Slave Lake’s huge cold water mass shielded it from impacts of the rapidly warming climate—until now.
Posted inNews
Arctic Ice Loss Could Shorten Winter Feeding Time for Zooplankton
The Arctic’s thinning sea ice allows more light to penetrate deeper into the ocean, holding zooplankton far beneath the surface.
Posted inNews
Ambidextrous Microbes May Pump Out CO2 as Temperatures Rise
Certain microbes that engage in both photosynthesis and predation are more likely to do the latter as the planet warms, resulting in a net release of carbon dioxide.