Laserfiche WebLink
14 <br />pine -oak vegetation type. Again, the occurrence of dense litter and • <br />shade from the tree canopy restricted abundant herbaceous (understory) <br />growth. Grass species and several (orbs were dominants. <br />Cover values for the willow carr reference area are presented <br />in Table 13. Artemisia dracunculus had a mean cover value of 8.5'. <br />Linaria vuloaris had a mean cover value of 5.6, Carex sp. had a mean <br />cover value of 5.5%, Cirsium vulgare had a mean cover value of 4.7°„ <br />Juncus sp, had a mean cover value of 4.4°x, and Eriaeron speciosus had <br />a mean cover value of 3.4%. The remaining species had mean cover <br />values of 2.8% and below. Most of the orass species fell into this <br />lower category. The total mean herbaceous cover was 49.5x, litter <br />accounted for 44.4% of the cover, and bare ground accounted for 5.9% <br />No rocks were encountered. <br />Production values for the willow carr reference area are pre- <br />i <br />sented in Table 14. Linaria vulgaris had a mean production of 12.9 <br />gms/m2, and Juncus sp. had a mean production of 11.8 qms/m2. Carex sp. <br />had a mean production of 9.3 gms/m2, Artemisia dracunculus had a mean <br />production of 9.2 gms/m2, and Cirsium vulgare had a mean production of <br />8.1 gms/m2. The remaining species had production means of 3.9 gms/m2 <br />and below. The total mean production for the .willow carr reference <br />area was 74.5 gms/m2. . <br />Density measurements for the willow carr reference area are <br />presented in Table 15. No trees or saplings were encountered. In the <br />shrub category, Salix exigua had a mean density of 1.1/m2, and Rosa <br />woodsii had a mean density of 0.3/m2. The total shrub density was <br />1.4 individuals/n2. <br />