Prepared For
Total Page:16
File Type:pdf, Size:1020Kb
TWP. 79, RGE. 19 W6M TWP. 79, RGE. 18 W6M 2 1 6 5 e k r e C u l e e C o KP 76 KP 75 !. !. SYMPPUN_09_08 SALISER_09_09 SALISER_09_09 SYMPPUN_09_08 Sloane Slough # # # CIRSDRU_10_05 KP 72 KP 74 KP 73 !. !. ! !! !. TWP. 78, RGE. 19 W6M TWP. 78, RGE. 18 W6M SALISER_10_02 SALISER_10_02 34 35 SYMPPUN_10_02 36 31 SYMPPUN_10_02 SCALE: 1:12,500 FIGURE 2G m 2009/2010 RARE PLANT LOCATIONS 0100 200 400 ALONG THE (All Locations Approximate) Autumn Willow (SALISER) NOVA GAS TRANSMISSION LTD. GROUNDBIRCH MAINLINE PROJECT June 2010 6806 Kilometer Post Proposed Route !. DATA SOURCES: Drummond's Thistle (CIRSDRU) Access Road Sin Lake Imagery: SPOT 5 Satellite Imagery © 2010 CNES, # 2009 Point Observation Licensed by Iunctus Geomatics Corp., Lethbridge, Alberta, Canada; Existing Pipeline Rare Plant Location: TERA Environmental Consultants 2009, 2010; Pipeline Routing, Access Road: Midwest Survey 2010; 2010 Point Observation ! Railway Existing Pipeline: IHS Inc. 2010; Purple-stemmed Aster (SYMPPUN) 27 Railway: Natural Resources Canada 2008; 2009 Observation Extent TS49 Highway Road: GeoBase® 2008. 26 25 30 Although there is no reason to believe that there are any errors associated with the data used to generate 2010 Observation Extent Local Road this product or in the product itself, users of these data are advised that errors in the data may be present. 6806_Supplementary_Veg_Rare_Plant_Figure2G_Rev0.mxd NOVA Gas Transmission Ltd. Supplemental Rare Plant Survey Groundbirch Mainline Project June 2010 / 6806 TABLE 4 SUMMARY OF RARE PLANT SPECIES OBSERVED DURING THE 2009 AND 2010 SURVEYS Number of Number of Provincial Global Occurrences Occurrences Common Name Scientific Name Rank2 Rank2 Observed Traversed ALBERTA Carolina geranium Geranium S1 G5 2 2 carolinianum conic liverwort Conocephalum S2 G5 1 1 conicum hairy buttercup Ranunculus S3 G5 1 1 uncinatus pinesap Monotropa S2 1 1 hypopithys saxifrage species Chrysosplenium sp. S3 G5 3 1 BC autumn willow Salix serissima S2S3, G4 5 4 Blue Drummond's Cirsium drummondii S1, G5 11 11 (10)1 thistle Red prairie buttercup Ranunculus S1, G5 6 6 rhomboideus Red purple-stemmed Symphyotrichum S2S3, G5T5 7 7 aster puniceum var. Blue puniceum riverbank Anemone virginiana S1, G5T4T5 4 3 (2)1 anemone var. cylindroidea Red Torrey's sedge Carex torreyi S2S3, G4 2 2 Blue yellow-collar moss Splachnum luteum S2S3, G3 1 1 Blue Notes: 1 One occurrence is anticipated to be avoided by successful completion of the HDD underneath the Kiskatinaw River. 2 Definitions of provincial and global rarity ranks are included in the footnotes of Appendices A and B. 4.2.1 Autumn Willow (S2S3) Autumn willow (Salix serissima Fern.) is a 1-5 m tall dioecious, non-colonial shrub. The branches are erect, and the twigs are yellow to red-brown and smooth. The leaves are alternate, leathery and highly glossy on their upper surface with toothed margins. The leaf-like structures at the point where the leaf stalk meets the branches, (stipules) are absent or rudimentary. Flowers occur during or after the leaf growth, and are borne in stout catkins. Autumn willow grows in wet thickets, meadows and fens in the montane zone (Douglas et al. 1998-2002) (Plate 1). Autumn willow is ranked S2S3 in BC; S4 in Alberta and G4 globally. In addition to the three locations where autumn willow was observed in 2009, it was observed in three locations in 2010. Table 6 in Section 6.3 provides details regarding the locations and abundance of all occurrences of this species, as well as recommended mitigation measures. 4.2.2 Drummond's Thistle (S1) Drummond's thistle (Cirsium drummondii T. & G.) is a large (1.2-3 m tall) biennial herb with thick, woolly stems. The leaves are lance-shaped and deeply lobed with three to five spines along the edges of each segment (Plate 2). The leaves vary from hairless to soft-hairy on the upper surface and the lower surface of the leaves is unevenly hairy. The flowering heads are enclosed by bracts that are 3-5 cm tall with Page 17 NOVA Gas Transmission Ltd. Supplemental Rare Plant Survey Groundbirch Mainline Project June 2010 / 6806 purplish-red disk flowers. Drummond's thistle grows in meadows, forest openings and along roadsides (Douglas et al. 1998-2002). Drummond's thistle is ranked S1 in BC, S5 in Alberta and G5 globally. In addition to the six locations where Drummond's thistle was observed in 2009, it was observed in five locations in 2010. Table 6 in Section 6.3 provides details regarding the locations and abundance of all occurrences of this species, as well as recommended mitigation measures. 4.2.3 Hairy Buttercup (S3) Hairy buttercup (Ranunculus uncinatus D. Don) is a perennial herb growing between 30-80 cm in height with leaves divided into three lobed segments and finely toothed margins. Flowers are relatively small with petals that measure up to 3 mm long. Seeds with beaks arched into a distinct hook are dispersed from spherical heads measuring up to 4 mm in diameter. Hairy buttercup grows in moist, shaded woodlands (Moss 1983). Hairy buttercup is ranked S5 in BC, S3 in Alberta and G5 globally. A specimen of hairy buttercup was collected from the banks of the tributary to Henderson Creek during rare plant surveys in 2009; identification was confirmed following the completion of field work. The tributary to Henderson Creek was revisited during rare plant surveys in May 2010; however, hairy buttercup could not be relocated as it was too early in the season for identification of this species. The location will be revisited again during the planned mid-summer field visit. Table 6 in Section 6.3 provides details regarding the location of this species, as well as recommended mitigation measures. 4.2.4 Pinesap (S2) Pinesap (Monotropa hypopitys L.) is a yellowish-white or pinkish plant that lacks chlorophyll and instead obtains nutrients from the roots of coniferous trees with which it shares mycorrizal fungus (Kershaw et al. 2001). Pinesap grows 10-30 cm tall, and is unbranched with scale-like leaves and a cluster of nodding to erect urn-shaped flowers (Plate 3). Capsules open by lengthwise slits releasing numerous tiny seeds. Pinesap occurs in rich, shady coniferous forests (Moss 1983). Pinesap is ranked S2 in Alberta, S3S4 in BC and G5 globally. Pinesap was found in two patches at one location in 2010. Table 6 in Section 6.3 provides details regarding the location and abundance of this occurrence, as well as recommended mitigation measures. 4.2.5 Prairie Buttercup (S1) Prairie buttercup (Ranunculus rhomboideus Goldie) is a perennial herb, with one to several stems, that grows 10-25 cm tall. Basal leaves are long-stalked and egg to diamond-shaped, whereas stem leaves are stalkless, and divided into three to five linear segments. Flowers are yellow, with 5 petals, and grow as 3-12 per stem (Plate 4). Seeds are numerous in a globe-shaped head 4-6 mm long. Prairie buttercup grows in dry to moist open woods and grasslands (Moss 1983, Douglas et al. 1998-2001). Prairie buttercup is ranked S1 in BC, S4 in Alberta, and G5 globally. Prairie buttercup was observed in six locations in 2010. Table 6 in Section 6.3 provides details regarding the locations and abundance of all occurrences of this species, as well as recommended mitigation measures. 4.2.6 Purple-stemmed Aster (S2S3) Purple-stemmed aster (Symphyotrichum puniceum var. puniceum) is a tufted perennial herb. It has a stiff-hairy, reddish-purple stem that grows 0.5-1.5 m tall (Plate 5). Stem leaves are 6-16 cm long with clasping ear-like flanges at their base. Flower heads have ray flowers that are blue or occasionally rose or white, with yellow disk flowers in the centre. Seeds are smooth with a tuft of white hairs. Purple-stemmed aster grows in moist streambanks and openings and is known only from northeast BC (Moss 1983, Douglas et al. 1998-2001). It is on the Red list in BC and is ranked S1. The variety is not tracked in Alberta, but the species in the general sense (synonym Aster puniceus) is ranked S4. Globally the species and variety are ranked G5T5. Page 18 NOVA Gas Transmission Ltd. Supplemental Rare Plant Survey Groundbirch Mainline Project June 2010 / 6806 In addition to the seven locations where purple-stemmed aster was observed in 2009, it was observed in two locations in 2010. Table 6 in Section 6.3 provides details regarding the locations and abundance of all occurrences of this species, as well as recommended mitigation measures. 4.2.7 Yellow-collar Moss (S2S3) Yellow-collar moss (Splachnum luteum Hedw.) is light to yellow green and grows in compact tufts 1-4 cm high. This moss has long stalks (2-15.5 cm) with yellow umbrella shaped (slightly concave) sporophytes (Plate 6). It grows on old moose dung in muskeg and other boggy woods (Crum and Anderson 1981). Yellow-collar moss is ranked S2S3 in BC, S3 in Alberta and G3 globally. Yellow-collar moss was found in one location in 2010. Table 6 in Section 6.3 provides details regarding the location and abundance of this occurrence, as well as recommended mitigation measures. 4.3 Rare Ecological Communities One ACIMS-listed rare ecological community and one unranked community were observed along the route within Alberta, and are discussed below. No rare ecological communities as listed by the BC CDC were found during the survey. The locations of these rare ecological community observations are mapped on Figures 2B and 2C. 4.3.1 Aspen / Thimbleberry / Wild Sarsaparilla Community (S2S3) The aspen / thimbleberry / wild sarsaparilla community (Populus tremuloides / Rubus parviflorus / Aralia nudicaulis community) is found primarily in the western part of the Central Mixedwood Natural Subregion.