Marine debris (specifically plastics) have become a serious problem in coastal areas throughout the world, especially in the Pacific Ocean where gyres create large floating “garbage patches.” I work out on the back bays and salt marshes throughout the coastal region of New Jersey as I help to monitor and manage ospreys and their nesting platforms. Every time I’m out I encounter trash. Most of it accumulates along the wrack line on the higher portions of the marsh where storm surges, high winds, and during spring tides (during full and new moon phases) push it onto the marsh. This debris then makes its way into the nests of ospreys because this is where they collect most of their nesting material.
I might be a little biased in saying that Bass River State Forest is one of the most beautiful state parks in New Jersey, only because I live in the same town where it’s located. There is so much to explore at BRSF: large pine plantations by the Civilian Conservation Corps (CCC) that helped build NJ’s state parks, Atlantic white-cedar swamps galore, sugar sand, and all the wildlife that occupy pinelands habitats. One new and much different portion of Bass River State Forest is Ballanger Creek, pronounced “Baa-lan’-ger”. The surrounding forested habitat is mostly unfragmented and is comprised of mature pine-oak woodlands. There are some very large pitch pines that cover many species that are shade tolerant like, american holly. Two old freshwater impoundments were drained after Hurricane Irene blew out an earthen dam. Now freshwater wetlands have emerged and atlantic white-cedar seedlings are beginning to sprout.
Common along much of the coast of New Jersey, this site has had a lot of use in its history. A saw mill once operated here in the mid-19th century and in the early 1900s fields along the creek were used for agriculture. It was also used as a dump site for fill and other debris. A house and several out buildings were demolished when the property was acquired by the Green Acres Program in the mid-90s. Since its acquisition the site has not been actively managed for wildlife. That all changed in late 2009 when Conserve Wildlife Foundation of NJ acquired funding through the American Recovery and Reinvestment Act of 2009 to enhance the degraded wildlife habitat on site. We’re all done with the project and there’s a lot to explore here. We invite you to explore this site and enjoy its natural beauty and its wildlife residents. Click on the map to download or print a copy of it. Here is a link to the site via Google Maps.
Severe weather may have reduced productivity this year
by Ben Wurst, Habitat Program Manager
Surveys of nesting osprey have ended for 2012. Each year volunteers, state biologist and CWF staff complete nesting surveys of ospreys. These “osprey banders” complete “ground surveys” (referred to as ground surveys because they are surveying nests by land/sea, not by helicopter) that cover around 70% of the state population. The surveys are meant to keep tabs on the state population and data collected from the surveys are used to determine the health of the population. Young are also banded for future tracking. Next year a state wide aerial survey will be conducted; the last aerial survey was in 2009 where 486 nesting pairs were found. We won’t know the total size of the population until then. Nesting success is mixed this year and is highly variable by different regions, mainly because of severe weather.
I never heard of a “derecho” until this summer. According to Wikipedia it is “a widespread, long-lived, straight-line windstorm that is associated with a fast-moving band of severe thunderstorms.” A derecho hit Cumberland, Salem, Atlantic & southern Ocean County in the early morning hours on June 30th, right in the middle of the nesting season for ospreys. Weather plays a significant factor in the success of nesting ospreys. They nest in open areas, which makes them vulnerable to high winds and severe weather, and since they primarily feed on fish, water clarity affects foraging success.
“In South Jersey, Atlantic City Electric reported that 206,000 customers lost power from downed trees. Most of the outages were in Atlantic County, which prompted a county-wide state of emergency. Near Atlantic City, a boater died while trying to bring his vessel ashore. Officials believed that lightning struck a 104-year-old church in Longport and caused a fire that damaged the building.An elderly couple was killed when a tree fell on their house. In Vineland, damage was preliminarily estimated at $125 million.On July 19th, 2012, President Barack Obama declared three counties in New Jersey (Atlantic, Cumberland, and Salem) federal disaster areas. This assured disaster relief through federal assistance to local and state governments and some non-profit organizations.” (from Wikipedia.com) I also know that two people were killed while sleeping in a tent at Parvin State Park.
At this time most young were between 2-3 weeks old, with some a little older and some younger. All young are very vulnerable to severe weather, especially when wind gusts reach 70-100 mph, they can be easily blown from their nests and if not retrieved quickly could become food for ground predators or washed away with the tide. Winds gusted to 81 mph in Tuckerton, 74 mph in Absecon (Reported by the NJ State Climatologist Dr. David A. Robinson). In three areas that I survey (Absecon, Mullica River, & Little Egg Harbor) many young were either lost or blown from their nests and found dead or live on the marsh. In Absecon 9 of the 22 young produced had been lost or found dead on the marsh as a result of the storm. At a couple other nests to the north a few young were found on the ground shortly after the storm. Off of Great Bay Blvd. many nests that had young before the storm had lost them. One of our volunteers reported that many nests in Ventnor that were previously occupied had no young after the storm.
We can only hope that severe weather like this will not occur during the middle of the osprey nesting season again, but with a warmer climate these might become commonplace in New Jersey. One thing that we might consider is to take a long look at our current design for nesting platforms and look to see if we can make changes to allow for a deeper nest bowl. More of a problem is that some ospreys do not build substantial nests and use little sticks and branches, while others build large nests that are not easily blown away with the wind.
Last Thursday there was a flurry of activity throughout coastal New Jersey. It was one of the peak days of the beginning of the northern diamondback terrapin nesting season. I had scheduled myself to be off to work on projects around my house but ended up working for half the day on our Great Bay Terrapin Conservation Project. Female terrapins were everywhere! They were crossing all over Great Bay Blvd., a 5 mile long road that bisects pristine terrapin habitat. The shoulders of the road are suitable nesting habitat as well, so at times as many as 10-15 terrapins could be seen in one small section of the road. There were so many that one terrapin bumped right into another one on the shoulder of the road!! They were digging nests and laying eggs all over the place. It was certainly a rare sight. Luckily traffic was mild and the weather was clear so there were little road kills. One female fell victim to a Little Egg Harbor Twp. mower who was mowing the edges of the road. This certainly wasn’t the best day to mow the shoulders! Before more terrapins could be killed we contacted LEHT public works and they called off their mower until further notice. On a side note, we have asked the township and the environmental commission to adopt a delayed mowed regime in the past and unfortunately one terrapin died because of this. I even emailed the public works director early last week about nesting activity picking up and I asked for him to please let me know when they were planning to mow so we could have someone walk in front of the mower to be sure no terrapins were hit. On the positive side, we were able to salvage 7 eggs from the terrapin, and they were successfully placed in a hatchery in Loveladies on LBI. We have our fingers crossed that they’ll hatch later this summer!
Finally, we have had more of a presence on Great Bay Blvd this year with the assistance of our new intern, Kristin Ryerson. She is collecting data (size, age, weight, and other data) on terrapins that she encounters while conducting road patrols on Great Bay Blvd. We’ll be using this data to compare it to some collected in Barnegat Bay and past studies that were conducted on the road. Her position is a volunteer position so I really appreciate all of her help so far! We also have volunteers who are acting as “Terrapin Stewards” where they also conduct road patrols to collect sightings of terrapins, educate visitors to the road about terrapins, and they also make sure terrapins safely cross the road. Without their help this project would not be successful!
Roads are a necessary component to human survival. Since New Jersey is such a densely populated state we have a lot of them. Many of them have a negative effect on wildlife. One of these impacts is how they block or impede the natural migration of amphibians and reptiles as they search for mates or expand their territories.
During the summer I am always a little more aware while driving. In the next week many terrapins will begin to emerge from coastal waters to find nest sites. Box turtles and other freshwater turtles are seeking mates and nest sites. Snakes often bask in roadways to help them thermoregulate. Last week while I was driving down one road in the Pinelands I saw two cars pass me in the opposite lane. After they sped by, on the shoulder, I noticed something odd but I knew exactly what it was. A tail was flinging crazily in the air. I thought it was a snake but was’t 100% sure so I stopped and turned around to check it out. It turns out it was a snake and it was an endangered timber rattlesnake. This is only the second timber rattler that I’ve ever seen in the wild and they are quite a rare occurrence. It was still alive but severely injured. I pulled it off the road before another car hit it. I called Dave Golden a zoologist with NJ Fish & Wildlife and took the snake home with hopes that it would survive long enough to be transferred to the Cape May County Zoo. Unfortunately, it died an hour after I got home. As you travel our many roads this summer please be aware of your surroundings and watch out for any snakes or turtles that enter the roadway.
Timber rattlesnakes are a very docile snake, however they are still venomous and you can die if bitten. If you encounter a rattlesnake do not attempt to pick it up!!! I was extremely cautious of this snake even though it was injured. Please call 1-877-WARN-DEP immediately if you encounter a timber rattlesnake that is near your home and/or if you or it are in any kind of danger. Record information about your sighting and report it to the Endangered & Nongame Species Program here.
The image in this blog is available for other organizations to use under the Creative Commons license with proper attribution. Click here to view and download on Flickr.
Volunteers help install innovative new barrier to reduce terrapin road kills
by Ben Wurst, Habitat Program Manager
Last week volunteers from CWF and Exelon-Oyster Creek Generating Station helped to install 1,000 feet of barrier “fencing” along the first stretch of Great Bay Blvd inside Great Bay Blvd Wildlife Management Area. The new barrier is a new design and concept for reptile conservation here in NJ and possibly the rest of N. America. While many other types of barriers have been used by other organizations this type has not. It is a corrugated rigid plastic drainage pipe that was cut in half. It was made in NJ by ADS (Advanced Drainage Solutions) and was purchased through Caterina Supply, a local supplier of the pipe. Funding was provided through a Partners Agreement between Little Egg Harbor Twp. and the U.S. Fish & Wildlife Service (who purchased the pipe). The pipe came pre-cut from ADS and was transported by Eric Schrading with USFWS. To install the pipe we trenched a ditch and then hand dug it to the width of the 10″ pipe. It was then backfilled and screwed together where two pieces met. The main reason from switching from a traditional fence type barrier to this was to reduce future maintenance. Fences are easily damaged by motor vehicles and posts have been stolen or ripped out of the ground, so they take more time to repair throughout the year. This pipe should be maintenance free and hopefully if a car drives over it only minor damage will occur…we hope!!
If you’re interested in using this in your own reptile/amphibian conservation project email me and I’d be happy to help in any way possible!
Thank you to all the volunteers, vendors, and partners who help make this project a success!! To name a few: Home Depot of Manahawkin for donating the trencher for an afternoon, USFWS & Eric Schrading for purchasing and transporting the pipe, and Little Egg Harbor Twp. for their continued support of this project.
By now most ospreys are back from their wintering grounds in Central and northern South America. Generally the older more experienced birds return first and the younger inexperienced adults follow. Over the past month I’ve been very busy with platform repairs and installations throughout coastal New Jersey. You may not be aware but I maintain a huge number of nesting platforms. In just the past couple weeks I’ve worked as far south as Avalon (where I lead a group of students and their parents from Collingswood to replace an existing platform) and as far north as Bayonne (where I installed 3 platforms with local middle and high school students). Both were memorable experiences for both myself and many of the students. Most of them had never been on a boat or ever had the chance to walk on the saltmarsh.
Maintenance of existing platforms is critical to the continued recovery of ospreys. Over time (and in some cases, not much time) the condition of these nesting platforms is degraded, mainly by the environmental conditions where they’re placed. For the most part the fasteners are what go first from contact with high levels of moisture in the air, after that, the wood decays (unless a pressure treated or cedar wood is used). One way to help prevent the decay of platforms is to use marine grade stainless steel screws, galvanized bolts, and treated lumber. If we were to lose a large portion of the available nesting platforms in a given year then the population would suffer, so it’s important to make sure existing platforms remain in good condition.
Last week I got out to the “Wildlife Drive” at Forsythe NWR in Oceanville to repair a platform. The platform top had lost a side and could no longer hold nesting material. I built a new top out of salvaged wood that I collect and installed it on Thursday afternoon. The next day a male osprey began to place nesting material in the freshly repaired platform. Talk about perfect timing!
If you’re interested in helping us to maintain osprey nesting platforms, contact me about our new program to “Adopt a Platform.”
Now is the time to repair, maintain, replace existing platforms and install new nesting platforms for ospreys. Over the next four weeks we’ll be busy doing just this. We have plans to do work in many areas throughout the coastal zone of New Jersey from as far north as Bayonne then down on the Barnegat Bay, Mullica River and south to Avalon.
The cutoff date for nest repairs is April 1st, when the nesting season begins. Over the next few weeks more and more ospreys will be appearing with larger concentrations towards the end of the month. If you see a new nest this year, please let us know so we can include it in our annual surveys.
Program from 1970’s restores osprey population to historic numbers
by Ben Wurst, Habitat Program Manager
A helicopter hovers over an active osprey nest to count the number of eggs. Image courtesy NJFW.
The New Jersey Osprey Project began after the osprey was listed as an endangered species in 1973. In April 1974 an aerial survey was conducted to count the number of active osprey nests. The survey was conducted from Toms River to Atlantic City. The results were grim. Only five active nests were found. 10 years earlier there were over 50 in that same area. On all of Barnegat Bay in 1974 there was only one active osprey nest.
The heavy use of DDT in the 1950’s and 60’s was the main culprit in the decline of ospreys by affecting their ability to reproduce. When used in marine environments it was quickly absorbed by organisms and soils. It accumulated in the food web and because it was fat soluble it bioacummulated in predators, especially birds of prey. In short, it caused the thinning of eggshells which often broke under the weight of the incubating female. This threat, along with habitat loss and persecution caused the population to become almost extirpated from the state.
