Researchers at the North Temperate Lakes (NTL) LTER site have capitalized on the utility of Peter and Paul experimental lakes in northern Michigan in order to improve predictions of ecological tipping points in lake ecosystems. Their two-year study analyzes changes in the lakes’ spatial characteristics, and identifies statistical patterns in those characteristics as potential predictors of ecological… Read more »
The McMurdo Dry Valleys (MDV), the largest ice-free portion of Antarctica, is a unique and fragile ecosystem that has been designated as an Antarctic Specially Managed Area (ASMA). Human activities, including scientific research, are thus carefully regulated to minimize potential damage to the landscape and ecosystem. A workshop, held in May 2016, outlined actions to… Read more »
At the 2017 AGU Fall Meeting, held at the New Orleans Ernest N. Morial Convention Center in New Orleans, Louisiana, from December 11-15, 2017, dozens of LTER researchers will present new results on a range of topics, from how ecosystems recover from droughts and hurricanes to what manufactured ice storms can reveal about how to prepare for winter’s worst. Links to the abstracts for over 100 LTER presentations at AGU 2017.
Credit: Ingrid Taylar. CC BY 2.0To maintain the image of a pristine beach—wide stretches of sand absent of fly-ridden piles of seaweed—managers often add sand to beaches and remove seaweed. This removal may lead to a more enjoyable experience for humans, but it constitutes a major loss of habitat for sandy beach critters, which use… Read more »
If carbon is currency, wildfires are the brokers; that is, they distribute carbon between land and air. In the short-run, fire emits carbon dioxide into the atmosphere. Over time, it also strengthens subsequent carbon uptake through plant regrowth. This exchange is like a natural Ponzi scheme – the carbon offsets from yesterday’s fires take up today’s emissions…. Read more »
Interior Alaska: black spruce and mosses as far as the eye can see. New research suggests that image may change dramatically over the next century. As the intensity of fires in interior Alaska increases, forest regrowth is shifting from spruce to deciduous species such as trembling aspen and Alaska paper birch. But intense fires also… Read more »
While Florida, Texas, and Puerto Rico recover from a devastating hurricane season, another natural disaster rages on the other side the continent. Following a record-hot summer and dry conditions, the northwestern United States and Canada have experienced one of the most intense fire seasons on record. As global temperatures rise, scientists will need a better… Read more »
A recent experiment examined the impacts of increased nitrogen on salt marshes—and the all-important microbes within them.
Each forest reflects a legacy of past disturbances—from the literal detritus left behind a storm or fire to the prominence of particular species traits that enable species to bounce back after a specific type of disturbance.
How can researchers project the ways in which land-use changes will affect ecosystem services when they don’t yet know what course development will take? Integrated scenario analysis models several possible trajectories to examine the interactive effects that land-use change could have on ecosystem structure and function.