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II. PLANTS, WILDLIFE and NNIS SPECIES
Plant and wildlife inventories have been performed in part by neighborhood residents who have been documenting plant and wildlife species onsite via iNaturalist. MTS reviewed and added to the iNaturalist Fox Creek Park Species Survey project and added these species plus wildlife to the sp including 193 plant and 46 wildlife species (See Appendix)
Among plant species, woody species comprise a remarkable 77 species vs. 116 herbaceous species (wildflowers, ferns, and grasses/sedges/rushes) though several woody species are invasive or relict cultivars that do not benefit native ecological dynamics. Thought most plants are native, 44 species (23%) are non-native invasive species (NNIS) species.
RARE PLANT SPECIES
Three NCNHP Watch List plant species were observed onsite include Mountain Camellia, Riverbank Wild Rye, and Canada Hemlock. Only the Wild Rye was found in moderate numbers while one stem each of the Camellia and Hemlock were observed. Below, each species is listed with NCNHP “status” and “rank” codes which indicateindicates rarity and approximate population information.
Rare species listed by state and federal agencies are the least common, rarely encountered, and sometimes the most threatened and endangered species for a wide variety of reasons. Some were formerly common and dominant but no longer have suitable habitats due to agriculture, forest removal, and development. Others are threatened by invasive species, have only been newly discovered in the state, have highly specific or very small habitats, and others have suffered severe declines in recent years due to invasive insects or fungal infections.
The NC Rare List, developed by NCNHP, includes species having legal protection, such as those listed as state or federal Threatened and Endangered (“T&E”) and “Special Concern (“SC”) species (the feeder list for T&E species). The NC Watch List includes rare plants or wildlife species that are rare for various reasons but are not yet (or were formerly) tracked by NCNHP. “W5 indicates species now rare due to catastrophic, rapid declines, while W5 indicates species that are “rare due to severe decline,” in this case, due to HWA invasion. Chemical treatment is currently the only method to save the tree (See Section III.D., pg. 17)
A single, knee-high stem of this Tea Family plant was observed in the northern property region, just east of the stream but it is uncertain if it is a naturalized stem from nearby plantings or a native occurrence since mature, flowering stems were not seen.
Conservatively, it is being treated as a naturally occurring plant so that it can flower and potentially spread. This species is typically found near streams and water though not in saturated wetland conditions and is often associated with Rhododendron.
“SR-P” indicates species that “Significantly Rare – Peripheral” meaning they occur in NC at the edge of their regional ranges and are thus rare in the state and typically found in rare habitats. Regionally, Camellia centered on the southern Blue Ridge but closer to TN, GA, SC. In NC it is more common in the western mountains and it has small regional populations scattered in the western Piedmont.
In NC an “S2” status indicates 5-20 known regional populations (which can cover large areas vs. individual properties) and regionally it has a “G4” status meaning “regionally secure” meaning that enough populations are known and protected that it is not threatened or endangered.
Two locations were observed of this slender native grass, one at the northeast property corner near the stream and a second on the western dam embankment as indicated by the previous years dried spikes. Other patches or small colonies may exist onsite in open areas. This species occurs in moist forests and low rich woods along large rivers. Like Nottaway Valley brome, it is considered “rare and poorly known” (W7), “critically imperiled” (S1) in the state, having 5 or fewer known regional populations, and globally “secure” (G5) being more abundant
Formerly a dominant evergreen throughout Blue Ridge coves, moist slopes, and waterways, this species would have originally been common throughout this property. Hemlock has lost 95% of its total coverage and stems since the Blue Ridge invasion of the HWA in 2001 on imported Japanese Hemlock nursery stock. W5 refers to plants that have become rare due to major and usually rapid declines (HWA invasion). Though S4 and G5 indicate “apparently secure” and “secure” regional populations, only 5-10% of Hemlocks remain in the region and are continuing to decline meaning these rankings are factually out of date.
Only on small sapling (1-2-inches diameter) and approximately 3-4 feet height was observed and this stem was “released” (with help of residents) via removing a small Red Maple and select Holly branches which were over-topping and shading the Hemlock. With these removals, the tree should begin to reach for the canopy relativley quickly as saplings are generally vigorous and much more capable of resisting HWA invasion. It is possible that other saplings are found onsite and if so, these should be released as soon as possible.
Forty-four plant species onsite are introduced and naturalized species that are not originally native to North America including highly and moderately invasive species and several relict cultivar species that are persistent after planting. It is the highly invasive species that are of greatest threat to native species and habitat and are thus the primary targets for immediate removal - something the Park residents have been performing since the park was donated.
The most invasive species having the greatest coverage is easily Kudzu. Other invaders with moderate to high coverage onsite include Multiflora Rose, Amur Honeysuckle, English Ivy, Periwinkle, Asian Bittersweet, Privet, Burning Bush, Watercress, and Japanese Honeysuckle. Several other problematic species remain onsite but are found in low numbers making for easier removal. Residents had previously documented the highly invasive Tree of Heaven and Princess Tree, but these were not seen during surveys and may have been removed already.
Among relict planted / cultivar species Japanese Holly is easily the most problematic, dominating much of the northeastern park region. Japanese Maple is also problematic in this area though with much less coverage than the Holly. One stem of Norway Maple and one small clump of Yellow Flag Iris were observed.
The majority of NNIS onsite are slightly less problematic (though low to moderate in coverage) as full-sun tending species which, while occupying open-area real-estate at present, are less invasive in wetland and forested uplands. That is, they can be controlled more easily over time vs. some of the higher-priority removal species such as Japanese Holly
English Ivy
Asian Bittersweet
Chinese Privet
Multiflora Rose
WILDLIFE and BREEDING BIRD SPECIES
Among wildlife, bird species are the most easily observed between migration, breeding, fledging, and fall migration periods. Among 44 wildlife species observed, 32 birds species were detected, 16 (and strong numbers of breeding pairs) of which are neotropical species that live in the Antilles, Central and/or South America but migrate to North America from March-May specifically to breed here – hence the importance of intact habitats in North American.
Tropical bird species (7) attempting to breed onsite include American Redstart, Gray Catbird, Indigo Bunting, Ruby-throated Hummingbird, Scarlet Tanager, Tree Swallow, and Wood Thrush. Chestnut-sided Warbler and Blackpoll Warbler were detected on May 15, but the former species breeds only at higher elevations regionally while the latter only breeds in boreal forests of the northern US and Canada.
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