Bowyer/Passage Islands Sensitive Ecosystem Mapping
· Gambier Island · Maps · 2010
Original Trust document
· 680 KB
· SHA-256 b770191c062c8392…
20,930 characters of machine-extracted text. Extraction is automatic and can be wrong; the original governs.
Topics: Marine & foreshore · Climate & environment — our classification, not the Trust's.
Extracted text (beginning)
1052 1044 1061 1058 1060 1046 1055 1050 1056 1054 1059 1027 1032 1045 1028 1049 1026 1036 1040 1051 1042 1035 1021 1057 1037 1025 1048 1030 1053 1043 1039 1031 4 80 000m. E 4 80 000m. E 4 82 000m. E 4 82 000m. E 54 74 000m. N 54 74 000m. N Sensitive and Terrestrial Ecosystems Label Salt Spring Island Saturna Island Mayne Island Galiano Island Vancouver Island Vancouver Bowyer and Passage Islands Sensitive Ecosystem Mapping Airphoto - 2006 $ UTM Projection Zone 10 NAD83 Scale: 1:15,000 The example label above indicates the SEM and TEM atri but es mapped for polygon 7838. The polygon occurs in the Coast Western Hemlock Eastern Very Dry Maritme var i ant ; 60% of the polygon is WD:mx - Woodland: mixed conifer and broadleaf (Primary Ecosystem), map code AM - Arbutus - Hairy manzanita, structural stage 5. The remaining 40% of the polygon is WD:co - Woodland: conifer dominated, map code DC - Douglas-fir - Western hemlock – Cladina (Secondary and Tertar y Ecosystems). Of this 40%, 20% is structural stage 4 and 20% is structural stage 5. SE Subclass Biogeoclimatic Unit * Indicates a field sample % of polygon (as decile) SE Class Polygon Number Mapcode Structural Stage Secondary Ecosystem Tertiary Ecosystem Primary Ecosystem 7838* CWHxm1 6WD:mx AM 5 2WD:co DC 4 2WD:co DC 5 Sensitive and Terrestrial Ecosystems LabelStructural Stage & Biogeoclimatic UnitsTerrestrial Ecosystem Map Codes and Site Unit Names 00.050.10.150.20.025 Kilometers Sensitive ecosystems are fragile and/or rare, or are ecologically important because of the diversity of species they support. Sensitive Ecosystems Importance: Subclasses: Rare Ecosystems Usually conifer-dominated, occasionally deciduous, dry to moist forest types, structural stage 6, generally >80yrs. Mature Forest (MF): Other important ecosystems have high biodiversity values. co(conifer dominated) - greater than 75% coniferous species mx(mixed conifer and deciduous) - a minimum of 25% cover of either group is included in the total tree cover Definition: Within 20 years, many Mature Forests that were logged early this century will become Older Forests. The biodiversity values of Mature Forests generally become higher with age. This means it will be able to sustain more and larger species of plants and animals. Future older forests Mature Forest stands provide connections between other natural areas that promote the movement and dispersal of many forest-dwelling species across the landscape. Landscape connectivity Mature Forest can minimize disturbance to sensitive ecosystems that occur within or adjacent to the forest patch. Where they border or surround wetlands, patches of older forest or other sensitive ecosystems, the Mature Forest area serves an important role in buffering the adjacent sensitive areas. Buffers Example of a secondary sensitive Herbaceous and tertiary sensitive Woodland ecosys
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