Measurable amounts are believed to be present in the blood of nearly everyone.

Stable isotope methods play a key role in reconstructing important issues such as ancient human diet, migration, the origin and domestication of plants and ...

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A study led by Associate Professor Kelton McMahon at University of Rhode Island's Graduate School of Oceanography has found that food webs on tropical reefs are more fragile than we once thought.

Phytoplankton is the primary energy source for all marine ecosystems: These tiny plants floating in the seawater use photosynthesis to bind energy in the form of biomass, which is then passed on step ...

Researchers invert a classical approach to modeling food webs. Instead of trying to replicate stable, complex ecosystems using simplistic representations of species interactions, the authors' novel ...

Estimated time of Completion: Activity and discussion can take up to 2 90-minute blocks depending on the amount of research Food webs show the interaction of different producers and consumers in an ...