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Tuesday, July 4, 2017

Land Snails and Millipede Transect, 2017




Article and pictures by Beth & Paul Pautler and Charlotte Hubbard.

Beth and Paul prepare for the hunt at Mile Marker 111.1 on the Blue Ridge Parkway.
Paul & Beth having fun searching for critters


In spring and summer of 2017 National Park staff and citizen scientists will inventory land snails and millipedes along the Blue Ridge Parkway. A national network, Hands on the Land (HOL), acts as a platform for volunteer training and a place for data collection. HOL is supported by Partners in Resource Education, which represents multiple federal agencies, several of which also support the Master Naturalist program. To find out more about the inventory and Hands on the Land, visit https://www.handsontheland.org/environmental-monitoring/land-snails-and-millipedes-transect.html

Three BRFAL Chapter members, Paul P., Beth P. and Charlotte H. participated as volunteer snail hunters! Slugs and millipedes were also inventoried during the project, and we encountered many other interesting-but-not-inventoried creatures. Beth and Charlotte attended a day-long live training held at Peaks of Otter on May 6, that included lecture, lab and field training. Paul completed the on-line training found on the HOL website. The background that follows is taken from part of the volunteer training.

BACKGROUND

Land snails are an easily overlooked and understudied part of the ecology in the southern and central Appalachians. Of the more than 1,000 species known to occur in North America, 25 have been identified on the Parkway, but another 125 are likely to be found here, some of which may be rare or even endemic.

Land snails, semi-slugs, and slugs contribute significantly to decomposition and nitrification of soils through their decaying bodies and feces. Their dead shells are a principal source of calcium. Land snails recycle forest nutrients and are prey for a number of vertebrate (amphibians, reptiles, birds, and mammals) and invertebrate (insects, carnivorous snails) species. Carnivorous snails feed on earthworms, insect larvae, and other snails. Some species consume dead and rotting organic materials while others eat live plants, especially seedlings and tender plants. Though poorly understood, some snails prefer to eat fungi and may be an important factor in dispersal of fungal spores.

Land snails are important environmental indicators and biodiversity predictors…snails are among the most sensitive animals to pollutants, including road runoff and acidic rainfall. Land snail populations have dwindled in recent decades, in turn contributing to the decline of some species of birds that feed on them and depend on them as sources of calcium for creating egg shells. https://www.handsontheland.org/environmental-monitoring/land-snails-and-millipedes-transect.html?showall=&start=1



((Put snail photos here)) Here are some of the species we collected on our two 2-hour sweeps of assigned GPS locations.

Each specimen was photographed in anterior, posterior and from above



Juicy slug with orange slime!
We became quite familiar-in more ways than one-with the millipedes we encountered. Beth became especially skilled at telling the male millipedes frothe females using the process described below.


Millipedes: Millipedes move quite slowly and many will ball up when threatened. Centipedes are faster and will bite if threatened, so let the centipedes go. Millipedes have two pairs of legs on most segments while centipedes have only a single pair of legs per segment. You will likely need your magnifying glass to observe the millipede. Pick up the millipede and gently coerce the millipede to open up for you. Count the body segments and on the seventh body segment confirm the pairs of legs. If you find only one set of legs look for the gonopods (small modified set of legs used in the reproductive process) and if you find them, you have found a male. Upon identification, male millipedes are dropped into a vial with alcohol for preservation. https://www.handsontheland.org/environmental-monitoring/land-snails-and-millipedes-transect.html?showall=&start=2
             Found lotsa millipedes, further inspection required to determine sex






Snail hunters have to brave areas that most naturalists have learned to avoid or tread carefully within: Soggy ditches, rotting logs, damp leaf-litter and drainage areas at the base of trees or rocky places. We were fortunate to avoid encountering the scarier co-habitants of snails, although poison oak, biting insects and “what do you think that scat is from?” kept us alert to the hazards around us. We hope our efforts make a contribution to the inventory data. The National Park Service can use the soon-to-be analyzed information to better understand these residents of the Blue Ridge Parkway and what they contribute to the biodiversity of the southern and central Appalachians.
Some other interesting stuff found:



Thursday, June 1, 2017

Look who I found...........

......strolling across the garage floor!  He (I'm guessing he) was strutting along like he owned the place, red legs and all.  He is a red-legged purseweb spider (sphodros rufipes).  According to Wikipedia these are native to the Southeast US but have been spotted much further North.  They make a tunnel shaped web and rarely leave it except to mate.  No wonder he looked so preoccupied. Also, notice his pet ant walking along.

Monday, April 24, 2017

Private Lands Wildlife Biologist Addresses Master Naturalists


On the evening of April 20, 2017 the Blue Ridge Foothills and Lakes Chapter of the Virginia Master Naturalists was lucky enough to have Ms. Lorien Koontz, the Private Lands Wildlife Biologist of the US Department of Agriculture address our group on the topic of Habitat Creation & Gardening.  She described a wildlife habitat as a place where animals (mammals, birds, insects, etc.) can find food & water, shelter and space to live.  Humans are often guilty of removing animal habitat.  Fescue lawns are one major cause of habitat removal by homeowners.

Instead of a fescue lawn which supports very little animal life, a homeowner is encouraged to plant a habitat friendly environment.  A habitat is often created in layers: mulch layer, herbaceous layer, shrub layer and tree layer.  Each layer can support different types of wildlife.

Lorien described the “Habitat How To” as:

·         Set goals

·         Decide where to start

·         Set budget

·         Access what you currently have

·         Remove invasive species

·         Select plants (Preferably Virginia native species)

·         Habitat should connect with each other if possible

·         Clear cuts can provide new habitat

For more information, Lorien suggested you visit xerces.org.  Also, you may contact Lorien at lorien.koontz@va.usda.gov.

Master Naturalists Recognized for Service

Please see below for the article placed in the April 12th edition of the Laker Weekly by Kathy Scott.  Kudos to us. (note that Jim Zinck was inadvertently listed as Jim Pilversack.  No worries, they're both nice guys.)

Monday, February 20, 2017

Bald Knob Natural Area Preserve Clean-up Day by Master Naturalists

Master Naturalists from the Blue Ridge Foothills and Lakes chapter joined with three members from the Southwest Piedmont Chapter for a service project on 2/18, a beautiful February Saturday. Ryan Klopf and Wes Paulos, Mountain Region Stewards for the Virginia Department of Conservation and Recreation (DCR), led the group of 21 on a stream cleanup work day.
Muck, briars and steep terrain did not prevent the group from collecting and removing dozens of tires, junked appliances and car parts, wire, many yards of black plastic and over 20 bags of debris.
The stream begins as a spring on the Bald Knob Natural Area Preserve (BKNAP) in Rocky Mount and eventually flows under US 220 and into the Pigg River. BNAP is the largest and best known occurrence of a "Piedmont mafic barren" where exposed rocks resist weathering and have unusual chemical properties, making them and their derived soils different from typical Piedmont sites. These unique soils produce some of the rarest plants in the world. BKNAP does not yet have developed public access, DCR has begun developing a long-term management plan inclusive of plans for both resource protection and public access. 
Although Saturday’s mission was to remove trash and debris from the Bald Knob stream, this small step helps decrease items leaching into the waters that feed the Pigg River. Any improvements to water quality in the Pigg, such as the recent removal of the old Power Dam east of Rocky Mount, help support the recovery of species like the Roanoke log perch, listed by the US Fish and Wildlife Service as endangered. http://ecos.fws.gov/ecp0/profile/speciesProfile?spcode=E01G

Good work by all! 

Blog post by Charlotte Hubbard