Author: NCWRC blogger/Sunday, August 5, 2018/Categories: Blog, Education
My name is Emma and I was an intern with the N.C. Wildlife Resources Commission this summer. Throughout my internship, I had the opportunity to work with several different biologists, ranging from those who worked with freshwater mussels to black bears. Here are some updates of what Commission biologists were doing this summer in the field.
Tar River Spiny Mussels
Endemic to North Carolina and listed as federally-endangered, Tar River spiny mussels are one of the only freshwater mussels with spines in the world. Due to its status, the Tar River has been stocked with spiny mussels in hopes of growing the population. In June, Commission biologists (along with USFWS, NCDOT, N.C. State and others) performed by augmentation surveys in Little Fishing and Fishing Creek, which are tributaries of the Tar River, to see the species’ progress.
The survey had two different components. The first included snorkelers surveying a quadrat for 90 seconds. After each quadrat, snorkelers would report if a “spiny” was found. The process continued until the entire reach was surveyed. A more targeted search was done using a passive integrated transponder tag (PIT) reader. The PIT tag reader uses electromagnetic fields to find spiny mussels that have been tagged. Each tag has an identifiable unique alpha-numeric code that gives biologists important information about the mussel. Measurements of each mussel were taken, and females were checked for fertilized eggs.
The Tar River spiny mussel augmentation survey was successful this year. The team found over 1,300 spiny mussels across the sites and stocked spiny mussels in seven different reaches of the two creeks. Even though no wild spiny mussels were found during the surveys, there are 20,000 more spiny mussels to stock and permission has been granted to also expand stocking locations. According to a Commission aquatic wildlife diversity biologist, “Things are starting to look up for the Tar River spiny mussel.”
Bear biologists have been hard at work releasing rehabilitated black bears from a pen in Caswell County to their homes in either the mountain or coastal regions.
Before release, biologists must process the bears. This includes recording the bear's size, weight and any injuries or health issues. Each bear is also tagged and given a radio transmitter collar and a unique lip tattoo so that it can be recognized by biologists.
Biologists are often forced to quickly adapt to any situation that is presented to them during field studies. This project was no exception as two black bears were found in the same trap one day and the biologists had to process two bears at the same time. The project was still executed perfectly and the bears were returned safely to their homes.
Sea Turtle Sand Nourishment Project
Last week, Commission sea turtle biologist Dr. Matthew Godfrey and his team inspected the beach on Oak Island where a sand nourishment project is wrapping up.
Taking sand from the same depth as a sea turtle nest, Dr. Godfrey checked for compactness and coloration. The sand should not be too compact or the eggs could risk suffocation and overheating. The sand should also be a natural and consistent color. It was their hope that the sand would meet the requirements so that the beach would not need to be tilled, which would put additional stress on the animals that live on the beach.
The sand passed the sea turtle “nest test” and the team agreed that no tilling would be needed. Not only does the beach meet sea turtle nesting standards, but beach inhabitants will not be disturbed any more than they have been already. Congrats to Oak Island, and thank you to everyone who made this project a success!
Eastern Box Turtles
We are on the 11th year of the Box Turtle Connection project and big strides are being made. The project is statewide and focuses on the long-term conservation of Eastern Box Turtles, N.C.'s state reptile.
Recently, the Lake Raleigh Woods study site invited a man and his turtle-trained Boykin spaniels to search for turtles. The dogs went out several days with the team, using their keen smell and gentle mouths to find and retrieve Eastern Box Turtles. Overall, the dogs found 30 turtles of all ages.
The Lake Raleigh Woods study site is in the midst of changing the transmitters of the telemetry turtles for another year of tracking. Not only are the transmitters on turtles from previous years being replaced, but a transmitter was put on a new female turtle in an area of the woods that hasn't been studied before. The Box Turtle Connection team is excited to learn more about female behavior in this part of the woods and to obtain more data on the other turtles.
This internship has been an incredible experience for me, one that I am sure to look back on fondly. Thanks go out to everyone at the N.C. Wildlife Resources Commission for this invaluable opportunity.
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