Mowitch Year 5 Marsh Development

Year 5 (2006) Marsh Development at Mowitch, Transect 1-1 – Cover
Common Name Scientific Name Exact Method - Continuous Unbiased Average Quadrat Canopy Cover (%) 90% Confidence Interval
Actual Total Canopy (%) Average Quadrat Canopy Cover (%) Frequency (%) Species Composition (%) Lower Bound Upper Bound
Native              
orache, fat-hen saltbush Atriplex patula 26.0 0.6 13.3 0.02 0.6 0.0 1.3
Lyngby's sedge Carex lyngbyei 56.0 1.2 8.9 0.05 2.1 0.0 6.1
tufted hairgrass Deschampsia cespitosa 48.0 1.0 15.6 0.04 1.1 0.4 1.7
seashore saltgrass Distichlis spicata 396.0 8.6 33.3 0.32 11.7 0.0 23.7
spike-rush Eleocharis sp. 254.0 5.5 40.0 0.20 6.8 1.6 12.0
fleshy jaumea Jaumea carnosa 339.0 7.4 37.8 0.27 8.1 2.8 13.4
seaside plantain Plantago maritima 398.0 8.7 40.0 0.32 10.4 3.8 17.0
pickleweed Salicornia virginica 543.0 11.8 53.3 0.44 13.7 5.0 22.5
Canadian sandspurry Spergularia canadensis 128.0 2.8 31.1 0.10 2.9 1.3 4.5
seaside arrow-grass Triglochin maritimum 239.0 5.2 22.2 0.19 6.8 0.2 13.4
Canopy Cover, Native   2427.0 52.8   1.96 79.8 41.0 118.7
Non-Native or Invasive1              
brass buttons Cotula coronopifolia 92.0 2.0 324.4 0.07 2.1 1.1 3.1
unclassified-herb unclassified-herb 25.0 0.5 284.4 0.02 n/a n/a n/a
unclassified-sedge unclassified-sedge 150.0 3.3 282.2 0.12 3.4 1.2 5.6
Canopy Cover, NNI   267.0 5.8   0.22 6.5 3.0 9.9
TOTAL   2694 58.6   2.17 79.5 46.4 112.5
  Proportion of non-native or invasive plants (%):   9.9%     7.5%    
   
Actual Total Canopy: Obtained by summing the percent cover of all quadrats on the transect.
Average Quadrat Canopy Cover: Obtained by dividing the total canopy by the total number of quadrats sampled on the transect.
Frequency: Obtained by dividing the number of occurrences of a plant species (the number of quadrats in which a plant species was observed) by the total number of quadrats sampled along the transect.
Species composition: Obtained by dividing the percent canopy cover of each plant species by the total canopy cover of all plant species.
Year 5 (2006) Marsh Development at Mowitch, Transect 1-2 – Cover
Common Name Scientific Name Exact Method - Continuous Unbiased Average Quadrat Canopy Cover (%) 90% Confidence Interval
Actual Total Canopy (%) Average Quadrat Canopy Cover (%) Frequency (%) Species Composition (%) Lower Bound Upper Bound
Native              
orache, fat-hen saltbush Atriplex patula 13.0 0.6 13.0 0.05 0.6 0.0 1.1
seashore saltgrass Distichlis spicata 85.0 3.7 8.7 0.32 n/a n/a n/a
spike-rush Eleocharis sp. 360.0 15.7 73.9 1.36 17.3 8.6 26.1
fleshy jaumea Jaumea carnosa 26.0 1.1 13.0 0.10 1.3 0.0 3.5
seaside plantain Plantago maritima 70.0 3.0 8.7 0.26 n/a n/a n/a
pickleweed Salicornia virginica 167.0 7.3 43.5 0.63 7.4 3.9 10.9
Canadian sandspurry Spergularia canadensis 133.0 5.8 52.2 0.50 6.0 3.2 8.8
seaside arrow-grass Triglochin maritimum 48.0 2.1 17.4 0.18 2.3 0.0 5.3
Subtotal   902 39.2   3.40 44.6 25.9 63.3
Non-Native or Invasive1              
brass buttons Cotula coronopifolia 250.0 10.9 82.6 0.94 11.0 8.1 13.9
Subtotal   250 10.9   0.94 11.0 8.1 13.9
TOTAL   1152 50.1   4.35 57.3 34.9 79.6
  Proportion of non-native or invasive plants (%):   21.7%     19.8%    
Actual Total Canopy: Obtained by summing the percent cover of all quadrats on the transect.
Average Quadrat Canopy Cover: Obtained by dividing the total canopy by the total number of quadrats sampled on the transect.
Frequency: Obtained by dividing the number of occurrences of a plant species (the number of quadrats in which a plant species was observed) by the total number of quadrats sampled along the transect.
Species composition: Obtained by dividing the percent canopy cover of each plant species by the total canopy cover of all plant species.