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ecosystems

A humpback whale breaches in the Gulf of Alaska.
Posted inNews

Years After the Pacific Marine Heat Wave, Ecosystem Shifts Persist

Hannah Thomasy, Science Writer by Hannah Thomasy 3 May 202125 October 2021

Researchers question whether Gulf of Alaska species will return to pre–heat wave conditions.

The restored floodplain of the South Fork McKenzie River in Oregon
Posted inEditors' Vox

Why Rivers Need Their Floodplains

by E. Wohl 22 April 202122 August 2023

Floodplain storage of water, nutrients, and sediment is critical to sustaining river ecosystems but has been reduced by human activities.

An excavator sits in the sediment-filled Paonia Reservoir in the Colorado mountains
Posted inOpinions

Sediment Mismanagement Puts Reservoirs and Ecosystems at Risk

by D. Tullos, P. A. Nelson, R. H. Hotchkiss and D. Wegner 14 April 202125 October 2021

Current regulations and reservoir management practices impede efforts to deal with sediment accumulation behind U.S. dams. New approaches are needed to improve reservoir sustainability.

A photo of the Dingo Fence in Australia’s Strzelecki Desert shows greater shrub density on the northern side of the fence (left side of the image).
Posted inNews

A Reminder of a Desert’s Past, Before Dingo Removal

by Nancy Averett 8 April 202116 December 2021

A fence spans Australia’s Strzelecki Desert, keeping dingoes out of the southern side. Drone and satellite technology have illustrated how removing this top predator changes vegetation growth.

Two plots showing measurements of soil and ecosystem metabolism
Posted inEditors' Highlights

Dueling Eyes on Ecosystem Metabolism Tell Diverging Stories

by Ankur R. Desai 2 April 202122 December 2021

Multiple state-of-the-art independent observing systems consistently disagree on magnitudes and patterns of ecosystem metabolism of carbon dioxide, but together can shed new insight.

Posted inEditors' Vox

Coastal Ecosystems Under Pressure Worldwide

by T. Malone, A. Malej and J. Faganeli 19 March 202127 October 2022

A new book explores how two river-dominated coastal estuaries are responding to the pressures of human expansion and climate change.

A patch of grass in the middle of rocks
Posted inNews

Vicuña Poop Nourishes “Dung Gardens” High in the Andes

Katherine Kornei, Science Writer by Katherine Kornei 18 March 20214 October 2021

The excrement delivers nutrients like phosphorus and nitrogen, kick-starting islands of vegetation at the edge of the cryosphere.

Black sea cucumber, also known as Holothuria atra
Posted inNews

Sea Cucumbers: The Excremental Heroes of Coral Reef Ecosystems

Hannah Thomasy, Science Writer by Hannah Thomasy 16 March 20214 October 2021

Drone surveillance reveals just how big a contribution sea cucumbers make to reef habitats.

Microscope image of several types of dinoflagellates
Posted inResearch Spotlights

The Role of Midsized Phytoplankton in Earth’s Biological Pump

Kate Wheeling, freelance science writer by Kate Wheeling 4 February 202127 September 2022

New research finds that nanoplankton may have a larger influence on carbon cycling than previously thought.

Stream surrounded by grassland.
Posted inNews

Waterways Change as Cities Grow Nearby

Katherine Kornei, Science Writer by Katherine Kornei 17 December 20206 September 2022

Using multidecadal data sets, researchers have traced how urbanization affects streamflow across the continental United States.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

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Seasonality is Changing for Extreme Dry and Humid Heat Events 

18 September 202617 September 2026
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In Appreciation of AGU’s Outstanding Reviewers of 2025

14 September 202610 September 2026
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