Allegheny River Headwaters Watershed Conservation Plan

Allegheny River Headwaters Conservation Plan
Chapter 4. Biological Resources
BULLIS MILLS CONSERVATION AREA (continued)
Threats: 1. Toxic chemical concentrations with lower trophic levels and accumulated toxins.
2. Human intrusion, particularly during the breeding season and maturing of young.
Recommendations: 1. Human intrusions and disturbances should be avoided between January 1 and August 31
within core and supporting habitats.
2. Timber harvesting, road building, and other habitat-altering activities should not occur in
the core habitat.
CORYVILLE RAILROAD GRADE CONSERVATION AREA
Description: Located along a section of railroad right-of-way within the large wetland complex along
the Allegheny River that provides habitat for stalked bulrush.
Significance: High
Location: Eldred and Keating townships, McKean County
Rare Occurrences: Stalked bulrush
Threats: No imminent threats.
Recommendations: Any activities that might alter the hydrology, such as ditching or deposition of fill materials
should be avoided.
DUTCHMAN HILL BIOLOGICAL DIVERSITY AREA
Description: A rich, mesic forested slope that is occupied by the West Virginia white (butterfly species
of concern within Pennsylvania). The forest community is a northern hardwood forest that
is dominated by sugar maple and eastern hemlock.
Significance: High
Location: Eulalia Township, Potter County
Rare Occurrences: West Virginia white
Threats: 1. Forest fragmentation due to the West Virginia white's reluctance to traverse large forest
openings to colonize new areas.
2. The invasive species garlic mustard causes direct mortality when caterpillars feed upon
it.
3. Gypsy moth spraying and deer over-browsing of host plants.
Recommendations: 1. Monitoring and removing garlic mustard in known West Virginia white habitats and in
stands of toothwarts.
2. Avoid or minimize gypsy moth spraying.
3. Minimize activities on timbering operations in early spring months to maintain habitat
when the West Virginia white host plants could be destroyed.
4. Selective harvesting that maintains canopy cover conditions is preferable to other
harvesting practices.
Description:
FISHING CREEK BIOLOGICAL DIVERSITY AREA
Fishing and East Branch Fishing creeks provide habitat for the American brook lamprey
and an aquatic animal species of concern not identified at jurisdictional agency's request.
Significance: High
Location: Clara and Roulette townships, Potter County
Rare Occurrences: American brook lamprey, species of concern not identified at jurisdictional agency's
request.
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