Disney Wilderness Preserve (DSNY)

Sampling at the DSNY NEON site was facilitated by Guy Fausnaught at NEON and Beatriz Pace-Aldana, the Research Coordinator, plant and GIS specialist at the Disney Wilderness Preserve.  From 15-16 June we installed seed traps and collected data on cone production at three NEON plots: 6, 8, 10.  Tree cover on other plots was too sparse to warrant seed monitoring.

Formerly ranchland, the Disney Wilderness Preserve has been restored to Pine savanna under ownership of The Nature Conservancy. Previously, most of the preserve consisted of flatwoods open to cattle and excluded from fire.  Frequent fire and invasive species removal restored the flatwoods/savannahs with more herbaceous groundcover.  Prescribed burning at 3-yr intervals promotes pine savannas, which is interspersed with cypress swamps and some hardwood stands.  TNC is actively managing to minimize invasive species and restore red-cockaded woodpecker to the site.  The dominant slash pine (Pinus elliotii) and longleaf (P. palustris) form a sparse canopy over palmetto (Serenoa repens) and rhizomatous dwarf shrubs, including dwarf live oak (Quercus minima), runner oak (Q. elliottii), blueberry (Vaccinium) and grass species, include wiregrass (Aristida stricta).  We observed a single loblolly pine (P. taeda).  Much of the mesic flatwoods remain saturated from May to September from almost daily afternoon thunderstorms, sometimes short-duration, often high-intensity.

Pine savanna with seed traps at plot 10
Pine savanna with seed traps at plot 10

Beatriz discussed options for accommodating our seed traps during controlled burns, which can come with limited notice.  She generously offered to facilitate moving traps aside during burns and contacting us on how to redeploy them.

Cone counts supplement mast estimates from seed trap data.  Throughout this site, pines support sparse foliage and cone production.  Female cones fertilized in spring develop over the current and subsequent growing season to release seeds in autumn and winter of the following year. Sparse canopies facilitated direct cone counts, in two cohorts.  Open cones at the time of our visit in 2018 released seeds in winter of 2017.  Consistent with previous convention, we call this the “2017 seed year”.  Fully developed but unopened cones on trees at the time of our visit were initiated in spring 2017 and will release seed beginning in autumn/winter of 2018.  Undeveloped cones were initiated in 2018 and too small to observe from the ground.  From cone counts, it became clear that 2017 was a relatively strong seed year. From sparse unopened cones we expect small seed crops in 2018.

Plot 6 burned this year

On all plots, we mapped all trees within the NEON 40×40 area.  Having been burned the week before our arrival, Plot 6 presented us with blackened soils and stems. Already there was evidence of regrowth of palmetto and grasses.  Despite near complete consumption of understory foliage during the burn, it was clear that palmetto was a dominant species. We installed six seed traps and counted cones on trees.

At the southern end of the site, plot 8 supported a diverse understory beneath a sparse slash pine overstory.  Here again, we installed six seed traps and completed cone counts.

Plot 10 represents palmetto-dominated savanna, with palmetto, several shrub oaks, Vaccinium, and grasses.  The water table was at the surface, but there was no standing water within the plot.  We installed 6 seed traps and counted cones from the three cohorts on trees within 20 m of the plot center.

DSNY Plot 6
DSNY Plot 8
DSNY Plot 10

Field Researchers

Don't miss these other field sites:

Soaproot Saddle (SOAP)

Soaproot Saddle is part of the Sierra National Forest and managed by the Forest Service. Jessica Bolis, NEON domain manager, facilitated access to the plots.

Wind River Experimental Forest (WREF)

The Wind River Experimental Forest, north of the Columbia River River Gorge and part of Gifford Pinchot National Forest, has been studied by the USFS since 1908.

Yellowstone (YELL)

Parent materials combine a history of volcanism, faulting, and glaciation. The park remains seismically active, with frequent earthquakes and many hydrothermal features. Vegetation includes a mosaic of forest, sagebrush-steppe and riparian bottomlands.

Treehaven (TREE)

The 560-ha Treehaven Forest lies within the northern Great Lakes region south of Rhinelander, Wisconsin. Operated by the University of Wisconsin-Stevens Point, this site focuses on natural resource education.

Bartlett Forest (BART)

Bartlett Experimental Forest (BART), located in the White Mountains National Forest, New Hampshire, is managed as the U.S. Forest Service, Northern Research Station.

Harvard Forest (HARV)

Sampling at Harvard Forest includes long term plots established by our lab in 2012 and new efforts located at NEON plots.

Mountain Lake Biological Station (MLBS)

Mountain Lake Biological Station is located in the Southern Appalachians of Southwest Virginia. This field site is administered through the University of Virginia. The NEON plots extend from mixed decidious forests to pine plantations.

Smithsonian Environmental Research Center (SERC)

Smithsonian Environmental Research Center is located south of Annapolis, MA. Formally farmland, this coastal plain forest sits on the western shore of the Chesapeake bay. The 1070-ha site is operated by the Smithsonian Institute.

Talladega National Forest (TALL)

The Talladega NEON site is located within the Oakmulgee Ranger District of the Talladega National Forest. This rolling terrain is part of the Fall Line Hills of the Eastern Gulf Coastal Plain. In the 1800’s this area was heavily logged, but since the 1980’s the Forest Service has worked on restoring this area back to the Longleaf Savannah ecosystem.

Ordway-Swisher Biological Station (OSBS)

The University of Florida hosts the NEON OSBS site at their Ordway-Swisher Biological Station in north-central Florida. Andrew Rappe, the Assistant Director, gave us an orientation to the site.

Niwot Ridge (NIWO)

Niwot Ridge is an LTER site administered through University of Colorado’s Institute of Arctic and Alpine Research (INSTAAR)at their Mountain Research Station. NEON sites extend from P. contorta and subalpine spruce-fir to above treeline.

Our Partners

PBGJAM is a collaborative project with financial and logistical support from the following partners