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Watershed Ecology

The Parkers Creek and Governors Run watersheds are hotspots of ecological diversity. Their habitats include forested uplands, mesic lowland forests, tidal freshwater and saltmarsh wetlands, pocket beaches, and fossil-bearing cliffs. On any given day, eagles, herons, ospreys, deer, beavers, otters, songbirds, and other native and migrating species can be spotted in the woods and marsh. For the best wildlife sightings, join us for a guided canoe trip or hike the trails early in the mornings or just before sunset.

 
​The large-scale land preservation accomplished by ACLT has resulted in the Parkers Creek watershed being one of the most protected watersheds in the state of Maryland, with preserved land making up approximately 60% of the watershed. Pretty incredible for a watershed that contains a good portion of the town of Prince Frederick.

According to the 2023 Report Card, prepared by ACLT's Science Committee, yearly ecosystem services provided by ACLT forests and wetlands include:

  • Absorbing over 150 tons of pollutants that would otherwise be in the air we breathe or in the Bay.

  • Containing an estimated 215,126 tons of stored carbon and continuing to soak up another 1,970 tons per year out of the atmosphere as the forests grow and mature.

  • Replenishing over 65 million gallons of water to aquifers and feeding our wells and rivers.

  • Assisting with flood prevention and stormwater mitigation.

  • Providing habitat for a biodiverse wildlife population.

 

The land within the Parkers Creek watershed has not only been preserved but actively managed as it has been acquired piece by piece over the last 30 years. Land managers have done their best to constantly focus their efforts on what we believe are the most pressing threats to the ecosystems within the Parkers Creek watershed. Volunteers and staff have worked tirelessly in their stewardship efforts, but are continuously questioning whether the watershed is as healthy as we hope and think it is. How do we know if there are areas where we are not doing well enough? And if we focus efforts on improving a certain aspect of an ecosystem, how do we know if our efforts are bringing results? Research and analysis is the key.

 

In 2016, the ACLT Board of Directors formed a Science Committee whose objective is to provide advice to the Board and staff that will help ACLT protect, restore, and identify threats to the ecological integrity of the Parkers Creek ecosystem. At its very first meeting, the Science Committee decided that the first step to determining where management efforts should be focused was to develop a baseline to assess the current status of the ecosystems within the Parkers Creek watershed. In addition to telling us where we need to focus more stewardship efforts, we have relied on this baseline data to observe any changes occurring over time and to address them as needed.

ACLT’s staff and Science Committee continuously collect data on the health of the Parkers Creek and Governors Run watersheds. The following sections describe that research and the work that continues to be done to protect our fragile ecosystems. Each section includes additional resources that provide updated information.

ACLT's quarterly newsletter, the Watershed Observer, regularly features articles about important issues facing the environment and how they are being addressed. Join our mailing list to receive our newsletter and other important updates.

​Introduction
Updates Re: Science in the Watershed
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Water Quality, Fish, and Benthic Macroinvertebrates

Since 1998, ACLT volunteers have been collecting water quality data at multiple locations along Parkers Creek. This dataset is by far our most extensive and valuable resource for understanding the health of the watershed. In 2017, ACLT launched its Annual Water Quality Blitz, an event that brings together citizen scientists from across surrounding watersheds to help collect water samples from local streams. These samples are analyzed to identify trends in water quality over time. 

In addition to the traditional parameters we have been using to monitor water quality, such as nitrogen, phosphorus, and total suspended solids, ACLT has also conducted surveys of fish and benthic macroinvertebrate (small aquatic insect) populations in the Parkers Creek and Governors Run watersheds. These surveys provide valuable information about water quality and habitat conditions. Learn more about our fish surveys in our newsletter or our blog. For details about our macroinvertebrate surveys, click here. 

Updates Re: Water Quality
Birds

 

The Parkers Creek Preserve is a designated Important Bird Area (IBA) and is the only place with this designation in all of Calvert County. An IBA is a site that has excellent habitat value and plays an essential role in hosting birds, whether for breeding, migrating, or over‐wintering. To better understand the bird species that rely on this area, ACLT volunteers have conducted point count surveys at sites throughout the watershed. In addition, ACLT maintains and monitors nesting boxes for wood ducks, bluebirds, and screech and barn owls, helping to enhance habitat availability and support local bird populations. 

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Updates Re: Birds
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Forest Diversity

 

Another ecosystem for which we needed to establish baseline data was our forests. We met with experts from the Smithsonian Environmental Research Center to learn how they sample tree diversity in their research plots around the world. To accomplish ACLT’s goals for establishing a baseline of forest diversity, we set up 24 plots representing the various forested ecosystems within the Parkers Creek Preserve. Volunteers helped measure and identify the trees found within each plot. This survey will be repeated every 10 years to track forest health and carbon sequestration.

Updates Re: Forest Diversity

Geology & History of the Parkers Creek Preserve

One of ACLT’s founding members, Dr. Peter Vogt, has written a series of articles documenting the geology and history of the Parkers Creek watershed and ACLT. All files open as .PDF's

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© 2025 American Chestnut Land Trust. All rights reserved. CFC #53731.

Office Location: 676 Double Oak Rd, Prince Frederick, MD 20678

Mailing Address: P.O. Box 2363, Prince Frederick, MD 20678

Phone: (410)414-3400 | Email: info@acltweb.org

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