Monday, September 9, 2013

Return to Flat River Impoundment (Durham County, North Carolina)

Every September, many local lepidopteraphiles (butterfly lovers) make a pilgrimage to the Flat River Waterfowl Impoundment in north Durham county, North Carolina. Located just north of Historic Stagville along Old Oxford Highway, the impoundment offers a gravel loop trail through wetland habitat. The area abounds with alternate wingstem (Verbesina alternifolia), passionflower (Passiflora incarnata), (Helenium amarum), and willows (Salix spp), all of which are attractive to adult butterflies or their larvae.

Cardinal Flower (Lobelia cardinalis© N. Cagle 2013

Time: 10:30AM to 12:00PM    
Date: Sunday, September 8, 2013
Weather: Full sun; 85-90°F
Butterfly Count: 14 species

  • Cabbage White - 1
  • Question Mark - 1
  • Hackberry Emperor - 8
  • Tiger Swallowtail - 4
  • Clouded Sulphur - 2
  • Orange Sulphur - 10
  • Cloudless Suphur - 11
  • Variegated Fritillary - 3
  • Pearl Crescent - 3
  • Common Buckeye - 13
  • Viceroy - 8
  • Clouded Skipper - 3
  • Fiery Skipper - 1
  • Red-spotted Purple - 2
Today, as we started walking the trail at the Flat River Waterfowl Impoundment, Buckeyes frequently intercepted our path. Occasionally, they were accompanied by Clouded Skippers. In years past, we have seen a much larger number and variety of skippers, although we often go two to three weeks later in the season.
Common Buckeye © N. Cagle 2013

Clouded Skipper © N. Cagle 2013
 Further down the trail, a large willow -- which we call "the butterfly tree" -- was alive with Hackberry Emperors and Horseflies gleaning sap. Beneath the willow, a Question Mark hung upside-down from a blackberry (Rubus spp).

Question Mark © N. Cagle 2013


Red-Spotted Purple © N. Cagle 2013
 Dung piles are excellent microhabitats for beetles, flies, and butterflies. On one pile of raccoon scat (filled with crayfish and persimmon seeds), we found a Viceroy and Hackberry Emperor competing for the rich trove of much needed nutrients, included salts and amino acids.
Viceroy © N. Cagle 2013

Hackberry Emperor © N. Cagle 2013
 As the morning heated up, we were greeted by the bright orange of the Fiery Skipper. We also saw three Variegated Fritillaries near blossoming Passiflora incarnata, a known host for Variegated Fritillary caterpillars.
Fiery Skipper © N. Cagle 2013

Variegated Fritillary © N. Cagle 2013




Saturday, September 7, 2013

Spiders along the Eno River

Spiders Along the Eno River

As summer seeps away in the Piedmont, spiders begin to spin their webs in earnest. Those of us hiking off the beaten path, in particular, will fight our way through a series of webs spun by prodigiously productive orbweavers (Families: Tetragnathidae, Nephilidae, and Araneidae).

Photographs of some common spiders in the Piedmont appear below. 


Orchard Orbweaver (Leucage venusta© Nicolette L. Cagle 2013

Triangulate Orbweaver (Verracusa arenata© Nicolette L. Cagle 2013
Triangulate Orbweaver (Verracusa arenata© Nicolette L. Cagle 2013

Unidentified Orbweaver © Nicolette L. Cagle 2013

Spined Micrathena (Micrathena gracilis© Nicolette L. Cagle 2013

Crab Spider (Family: Thomisidae)




Thursday, August 29, 2013

Excellence in EE Awards: Call for Nominations

Excellence in EE Awards: Call for Nominations

Help NAAEE recognize individuals and organizations that excel in EE by nominating them for one of our annual awards, including our highest honor, the Walter E. Jeske Award. Online nominations forms are linked here: www.naaee.net/programs/awards

Nomination Deadline is August 30!


Tuesday, July 30, 2013

Environmental Educators of NC: Call for Nominations

This is your last chance to nominate someone or someplace for a 2013 EENC Annual Award.


Award categories include:
Environmental Educator of the Year: for an individual who excels at helping others learn and lead

Exceptional Environmental Education Program: for a project, center, museum, unique program that helps people become more environmentally literate and knowledgable.

Outstanding Partnership: for a group, business, or organization that helps make environmental education possible.

Keith Bamberger
EENC Membership Co-Chair


Reposted from NC-EE Listserv

Sunday, July 14, 2013

New Hope Bottomlands Trail (Durham, NC)

New Hope Creek Bottomlands Trail (Durham NC)

Access: The New Hope Creek Bottomlands Trail is a 2.2 mile loop located off of SW Durham Drive in south Durham. The access point at Sherwood Githens Middle School is currently closed, so the best way to access the trail is to park by the dumpster in parking lot of the North Carolina Orthopaedic Center (3609 SW Durham Drive), walk down the sewer line easement, make a left at the first easement on the left, and reach the trail head on the right. 

Trail head of the New Hope Creek Bottomlands trail. Additional information about the site can be found at the New Hope Creek Corridor Advisory Committee website.
Map of bottomlands trail route.
What to expect: The New Hope Creek Bottomlands Trail loop winds through mixed hardwood forest. Expect to see stands of pawpaw, towering oaks, and other bottomland tree species. A part of the trail also runs adjacent to New Hope Creek. Please note that after heavy rains the trail does flood. The most recent rains have dislodged some of the new boardwalks. Be prepared for mosquitoes and muddy, wet trails.  Additional information about the site can be found at the New Hope Creek Corridor Advisory Committee website.

Sewer line easement near dumpster of North Carolina Orthopaedic Center (3609 SW Durham Dr). Use this entrance until the Sherwood Githens Middle School access point become available.

Common pawpaw (Asimina triloba) typically occupies low woods and floodplain habitats in NC. It is easily recognized by its rusty colored, paint brush-like buds and magnolia-like leaves. In spring, gorgeous maroon colored flowers -- pollinated by flies -- adorn these small trees. 

Enormous northern red oak (Quercus rubra). 

Two species of mulberry are common the North Carolina Piedmont. One species, white mulberry (Morus alba) is non-native. You can recognize the non-native mulberry by its relative smaller leaves that are glabrous (or smooth) above. This photo show the native red mulberry that has relatively larger leaves that are scabrous (or rough) above and pubescent (or fuzzy) below. 


A fallen tree provides wetland habitat in the bottomlands of New Hope Creek.

A southern leopord frog (Rana sphenocephalus).

New Hope Creek turbid from high sediment run-off.

Sunday, April 28, 2013

Temple Flat Rock (Wendell, Wake County, North Carolina)

Triangle Land Conservancy's Temple Flat Rock Preserve

Outside Wendell, NC (pop. ~ 6,000), an eastern satellite town of Raleigh, sits 5,270 square meters of exposed granite rock that supports a unique community of lichens, bryophytes, and angiosperms (flowering-plants). In 1984, the Temple family donated this unusual Registered Natural Heritage Site to the Nature Conservancy. In the mid-1990s, Temple Flat Rock was transferred the Triangle Land Conservancy (TLC), becoming the organization's first conservation easement.

Temple Flat Rock, Wendell NC with Appalachian sandwort (white flowers) and elf-orpine (pink); April 2013


Fence lizard at Temple Flat Rock
Temple Flat Rock, a granite outcrop that showcases a large expanse of the Rolesville granitic batholith, features a number of endemic plants, including Appalachian sandwort (Minuartia glabra) and elf-orpine (Diamorpha smallii). It also supports a number of mosses, over 44 species of lichen, hardy eastern-red cedars, and a few fence lizards and ground skinks that use Temple Flat Rock to bask in the sun on cool days.

Piedmont prairie establishment at Temple Flat Rock




The TLC preserve is also notable as a Piedmont prairie restoration site. Like the tallgrass prairies of the Midwest or the longleaf pine forests of North Carolina’s coast, the savanna-prairie complex of the Piedmont is a nearly extinct ecosystem. Today, prairie restoration sites occur around Charlotte and the Triangle. Yet, few of these places adequately capture the essence of the extirpated Piedmont savanna: an expanse of tussocky tall grasses and sky-reaching forbs beneath an open canopy of hardy post oaks, sometimes stretching for miles before meeting a riparian forest or wooded hill. These ecosystems, described by nearly every European explorer that had visited North Carolina’s Piedmont between the mid-16th and mid-18th centuries, were nearly forgotten landscapes even by the start of the American Civil War. Fortunately, Walt Tysinger, the land manager at TLC, has been working hard to bring these systems back both at Horton Grove (by Stagville plantation, north of Durham, NC) and at Temple Flat Rock.

Currently, Temple Flat Rock includes about 5 acres of granite outcrop, 15 acres of mixed hardwoods, and 16 acres of grassland established from old agriculture fields and horse pasture. Like most prairie restoration, recreation, and establishment managers, Tysinger struggles to control the non-native fescue (Festuca sp.), sericea lespedeza (Lespedeza cuneata) and native sweetgum (Liquidambar styraciflua). Using a combination of dormant season burns, spot spraying of herbicides, and bush hogging, Tysinger has been able to control the grassland invasives enough to establish (from plugs) native warm-season grasses, such as Indian grass (Sorghastrum nutans), little blue stem (Schizacharyium scoparium), and splitbeard bluestem (Andropogon tenarius). Other species seen in the grassland establishment include prickly pear (Opuntia humifusa), common milkweed (Asclepias syriaca), and broomsedge (Andropogon virginicus).

Chickasaw plum (Prunus angustifolia) thicket in Temple Flat Rock grassland establishment.


Prickly pear (Opuntia humifusa) at Temple Flat Rock grassland.


In the Triangle, a number of remnant grasslands or restoration projects occur on the basic soils of the Triassic Basin, underlain by magnesium- and iron-rich diabase. These soils often contain montmorillonite, a type of clay that shrinks and swells so dramatically that it can deter tree root growth. In contrast, the Temple Flat Rock prairie establishment project occurs on acidic Louisburg (Typic Hapludults) and Appling (Typic Kanhapludults) soil. Yet, the site is so xeric and well-drained, that with a little ecological disturbance (e.g., fire), a grassland ecosystem feels perfectly natural. Moreover, the hard work of Tysinger and the Triangle Land Conservancy serves to remind us all of the natural and cultural heritage of North Carolina's Piedmont prairie landscape.

Throwdown from Hurricane Fran in the oak-hickory forest at Temple Flat Rock.

For more information about Temple Flat Rock, please visit the TLC website at www.triangleland.org.



Monday, April 15, 2013

West Point on the Eno (Durham, NC): Emerging Dragonfly and Spring Flora II

West Point on the Eno: Emerging Dragonfly & Mid-Spring Flora II

Emerging Dragonfly: on the bridge by the mill

Rue anemone (Anemonella thalictroides): north facing hillside, near Sennett's hole

Pinxter-flower (Rhododendron periclymenoides)





Sunday, April 14, 2013

West Point on the Eno (Durham, NC)

West Point on the Eno (Durham, NC) -- Mid-Spring Flora, Basking Snakes, and Unidentified Crayfish

Creeping Charlie (Glechoma hederacea): found in the bottomlands near Sennett's Hole;
weedy, invasive ground cover from Europe; toxic to cattle and horses, but used medicinally. 

Golden Alexanders (Zizia aurea): found in the bottomlands near Sennett's Hole

Spring beauty (Claytonia virginica): found in the bottomlands near Sennett's Hole

Early saxifrage (Saxifraga virginiensis) -back of flower head, found near "turtle rock" of rocky bluffs at West Point on the Eno

Early saxifrage (Saxifraga virginiensis) -with distinctive basal leaves, found near "turtle rock" of rocky bluffs at West Point on the Eno

Northern water snake (Nerodia sipedon): adjacent to the mill wheel at West Point on the Eno

Queen snake (Regina septemvittata): adjacent to the mill wheel at West Point on the Eno

Crayfish, spp. unknown: Warren Creek
for more information on North Carolina crayfish species, please visit: http://216.27.39.101/wildlife_species_con/nccrayfishes/nc_crayfishes.html

Saturday, April 13, 2013

Return to Mason Farm (Chapel Hill, NC)

Redbelly Water Snake (Nerodia erythrogaster) at Mason Farm, Chapel Hill, NC


One evening this April, I visited Mason Farm with my dear friend gumby. As we started hiking down the grassy path, I commented on how Mason Farm was always a lucky place to find snakes, especially brown snakes, rough green snakes, and rat snakes.

We were lucky to add another species to that list: redbelly water snake (Nerodia erythrogaster). This juvenile rested in the middle of the path in a grassy field adjacent to wetland habitat. I've yet to find a red-bellied water snake in the water, or even on a log sticking out of the water. I often find them sunning themselves in an open grassy area, near but relatively removed from water.

Redbelly water snakes have been observed at Mason Farm before, but there is still something exciting about seeing a species at the edge of its range. In North Carolina, redbelly water snakes are more abundant in the Coastal Plain, and their distribution only sneaks into the eastern Piedmont counties: Richmond, Lee, Moore, Wake, Chatham, Orange, and possibly Anson.