Hobucken marshes/Gum Swamp
Location: Pamlico
County
Total Size: 39,230 acres
Map
Site Description: The Hobucken Swamp-Gum Swamp site is located on the
western side of Pamlico Sound, near the town of Hobucken. This site
consists of a
diverse array of habitat types including longleaf pine forest, pond pine
flatwoods, cypress ponds, saltmarsh (black needlerush and Spartina),
brackish water impoundments, and non-riverine hardwood swamps. Approximately half of the site is part of the North
Carolina Wildlife Resources Commission (NCWRC) Game Lands Program, which provides wildlife habitat and public
recreational opportunities. .
Habitats: coniferous forests, deciduous forests, impoundments, brackish marsh
Coniferous: The topography is fairly lever (0-2% slope) with the higher elevations comprised of sandier loams dominated by longleaf and loblolly pines. In the surrounding lower elevation areas where the soils contain more organics pond pines dominate the plant communities.
Deciduous: Again the topography is nearly level (0-2% slope) with the higher elevated loams being dominated by mostly water and willow oaks while red maple and black gum dominate in those areas which have a high water table.
Impoundments: These areas are approximately 75% open water when flooded with the remaining 25% comprised of various emergents including black needle rush, Spartina, phragmites, bacopa, spikerush and aquatics such as wigeongrass and muskgrass.
Brackish Marsh: The main Plant species found in the marsh were black needlerush, Spartina, grounsel bush, wax myrtle and glasswort.
Land Use: wildlife conservation, recreation, hunting, forestry
Primary Threats: introduced plants, water pollution, residential/commercial development
Protection Status: The NCWRC protects and manages approximately half of
the site. The remainder is privately owned, most of which is managed waterfowl
impoundments and adjacent forest land.
Conservation Issues: Invading plants especially Phragmites are a
serious threat to the impoundments and marsh as they out compete other native
plant species that provide important food and shelter benefits to waterfowl and
other shorebirds. A second conservation issue is a great potential for the
occurrence of water quality degradation from nearby phosphate mining,
agricultural uses, and residential development (e.g., septic systems). As
residential development increases in areas adjacent to the Game Land, some
management activities (e.g., prescribed burning) will become more difficult to
implement.
Birds: The site is a key area for migrating and wintering waterfowl,
especially the managed impoundments. Shorebirds utilize the impoundments when
water levels are low or exposed bottom is present. Very few bird surveys have
been conducted during spring and summer, thus breeding birds are poorly
understood. It is likely that the site is
significant for additional species, but spring and summer surveys need to be
conducted.
Key Bird Species
|
Criteria |
Season |
Number |
||
| 4b | American Wigeon | FM, W | 1,000-2,000 | |
| 4b | Northern Pintail | FM, W | 1,760 | |
| 4b | Scaup (spp) | FM, W | 1,370 | |
| 4b | Gadwall | FM, W | 1,260 | |
| 4b | American Coot | FM, W | 2,000-5,000 | |
| 4d | shorebirds | FM, SM | 500-1500 | |
| 4a | Black Duck | FM, W | 225 | |
| 4b | other Waterfowl | FM, W | 2,000-4,000 | |
| 4b | Sea Ducks | FM, W | 1,000-1,500 | |
| 4a | Blue-winged Teal | FM | 500-3,500 | |
B=Breeding FM=Fall Migration
SM=Spring Migration W=Winter
Sources:
Dennis Luscuz, NC Wildlife Resources Commission
David Allen, NC Wildlife Resources Commission
Walker Golder, National Audubon Society