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food webs

A collage of different diatom species
Posted inNews

Ocean Acidification May Drive Diatom Decline

by Clarissa Wright 28 June 202212 September 2022

Diatoms contribute to global oxygen production, marine food webs, and carbon sequestration, but scientists predict that diatom populations will decline due to ocean acidification associated with climate change.

Scientists collect samples from algal mats dotting the surface of sea ice in the Arctic.
Posted inNews

Algal Mats May Be a Key to the Arctic Food Web

by Fanni Daniella Szakal 27 June 20226 January 2023

Melt ponds in sea ice have thriving algal communities with startlingly high levels of photosynthetic activity.

A collection of globular, multicellular membrane-bearing algae from the Kuanchuanpu biota
Posted inResearch Spotlights

Multicellular Algae Discovered in an Early Cambrian Formation

by David Shultz 16 August 202130 January 2023

A new study describes eukaryotic organisms found organized in a cortex-medulla pattern in southern China’s Kuanchuanpu Formation.

Example of a modern-day rain forest ecosystem
Posted inNews

Finding Prehistoric Rain Forests by Studying Modern Mammals

by Hannah Thomasy 4 November 202029 April 2022

Mammal teeth store a record of the plants they ate, providing clues about the ecosystems in which they lived.

A large swirling plankton bloom is seen in the Gulf of Alaska in this satellite image taken in June 2016
Posted inResearch Spotlights

A Promising Development for Detecting Ocean Productivity

by Terri Cook 3 November 202027 September 2022

A comparison of primary productivity measurements across the North Pacific Ocean demonstrates the potential for using autonomous instruments to discern effects of climate change on the marine food web.

Metal drill going into ice hole
Posted inNews

A Subglacial Lake in Antarctica Churns Out Nutrients

by Katherine Kornei 8 April 202029 April 2022

Eight hundred meters below the West Antarctic Ice Sheet, microbes in subglacial Lake Whillans create organic carbon that helps power the Southern Ocean’s vast food chain.

Map of the present-day Global Ocean Acidification Observing Network, showing moorings, ships of opportunity, and time series measurements currently in the network
Posted inScience Updates

Progress and Planning in Understanding Ocean Acidification

by J. A. Newton, F. Chai and M. Dai 18 July 201912 September 2022

The 4th Global Ocean Acidification Observing Network (GOA-ON) International Workshop; Hangzhou, China, 14–17 April 2019

Researchers use a net to collect plankton in order to study diversity and biomass
Posted inScience Updates

Sustainable Observations of Plankton, the Sea’s Food Foundation

by P. Miloslavich, J. Pearlman and R. Kudela 20 November 201828 September 2021

Workshop on Developing an Implementation Plan for a Sustained, Multidisciplinary Global Observing System of Plankton Communities; Santa Cruz, California, 25–27 June 2018

A fossil ichthyosaur, a predator that emerged in the aftermath of the Permian-Triassic mass extinction.
Posted inNews

How Did Life Recover After Earth’s Worst-Ever Mass Extinction?

by L. Joel 1 November 201829 September 2022

Ocean animals at the top of the food chain recovered first after a cataclysm at the end of the Permian period. The extinction was triggered by events resembling the changes brewing in today’s oceans.

Silvertip sharks in Chagos Archipelago
Posted inNews

Nutrient-Rich Water Around Seamounts Lures Top Predators

by Katherine Kornei 15 March 201821 December 2022

At an Indian Ocean marine refuge, tides drive cold water laden with nutrients onto the tops of underwater mountains, where it sustains a long food chain that culminates in sharks, tuna, and seabirds.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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