Applied GIS - 4215

Applied GIS - Applied GIS - 42154215

Project 3: Database Project 3: Database Management ExerciseManagement Exercise

Geodatabase and TopologyGeodatabase and Topology

By Stephanie Wilkie

TopologyTopology

Part IPart I

As an employee in the GIS department As an employee in the GIS department of a forestry company, my current of a forestry company, my current task is to check topological errors in task is to check topological errors in and between layers.and between layers.

TopologyTopology

In Arc GIS…In Arc GIS… Topological rules were createdTopological rules were created These rules were checked within and These rules were checked within and

between specified layers to reveal errorsbetween specified layers to reveal errors Errors were fixed using the editor tool Errors were fixed using the editor tool

in Arc Mapin Arc Map Fixed errors were then validatedFixed errors were then validated

TopologyTopology

Subtype and Attribute Domain Subtype and Attribute Domain CreationCreation

Part IIPart II

New fields and attribute descriptions New fields and attribute descriptions must be added to the FRI GIS files must be added to the FRI GIS files due to recent changes in forest due to recent changes in forest management policies.management policies.


Attribute domains for the new fields Attribute domains for the new fields and attributes were created using and attributes were created using subtypes based on the STYPE field.subtypes based on the STYPE field.

Three or more records were chosen Three or more records were chosen from each of the existing stand from each of the existing stand types. Attribute domains where types. Attribute domains where created and specified for three created and specified for three selected fields.selected fields.



For the birds…For the birds…

Part IIIPart III

A series of queries were performed in A series of queries were performed in the bird survey database to obtain the bird survey database to obtain solutions for the following solutions for the following scenarios… scenarios…

Scenario 1Scenario 1

A peer thinks there are more ravens in A peer thinks there are more ravens in her operating area than mine. I her operating area than mine. I think she’s wrong. We decide to think she’s wrong. We decide to check the database for raven check the database for raven sightings in stands 20 years of age sightings in stands 20 years of age or older that fall within a 100 metre or older that fall within a 100 metre radius of the plot.radius of the plot.

Scenario 1Scenario 1To determine who has the most ravens in their operating area we To determine who has the most ravens in their operating area we

ran 2 queries: one for my operating area and another for my ran 2 queries: one for my operating area and another for my peer’s operating area.peer’s operating area.

For my operating area (3 and 4) we ran the following query:For my operating area (3 and 4) we ran the following query:

("SPECIES_CO" = 'CORA') AND ("POINT_IN" >= 1) AND ("SPECIES_CO" = 'CORA') AND ("POINT_IN" >= 1) AND ("CLUSTER_NU" = 3 OR "CLUSTER_NU" = 4) AND ("AGE" >=20)("CLUSTER_NU" = 3 OR "CLUSTER_NU" = 4) AND ("AGE" >=20)

For my peer’s operating area we ran a similar query, but for operating For my peer’s operating area we ran a similar query, but for operating areas 1 and 2:areas 1 and 2:

("SPECIES_CO" = 'CORA') AND ("POINT_IN" >= 1) AND ("SPECIES_CO" = 'CORA') AND ("POINT_IN" >= 1) AND ("CLUSTER_NU" = 1 OR "CLUSTER_NU" = 2) AND ("AGE" >=20)("CLUSTER_NU" = 1 OR "CLUSTER_NU" = 2) AND ("AGE" >=20)

We found no ravens sightings in the database for either operating We found no ravens sightings in the database for either operating areaarea


A local birder believes that harvest A local birder believes that harvest operations are creating negative operations are creating negative long-term impacts on yellow-bellied long-term impacts on yellow-bellied sap sucker habitat. We decide to sap sucker habitat. We decide to check the bird survey database for check the bird survey database for yellow-bellied sap sucker sightings yellow-bellied sap sucker sightings in poplar and balsam fir stands with in poplar and balsam fir stands with and without stumps.and without stumps.

Scenario 2Scenario 2To determine whether yellow-bellied sap suckers have been To determine whether yellow-bellied sap suckers have been

affected by harvesting operations, two queries were run: one affected by harvesting operations, two queries were run: one for sightings in areas that have been logged and another for for sightings in areas that have been logged and another for sightings in areas that have no visible signs of past logging sightings in areas that have no visible signs of past logging operations (i.e. cut stumps)operations (i.e. cut stumps)

Query for presence of stumps:Query for presence of stumps:

("SPECIES_CO" = 'YBSA') AND ("WG" = 33 OR "WG" = 13) AND ("SPECIES_CO" = 'YBSA') AND ("WG" = 33 OR "WG" = 13) AND ("CUT_STUMPS" = 1)("CUT_STUMPS" = 1)

Query for no presence of stumps:Query for no presence of stumps:

("SPECIES_CO" = 'YBSA') AND ("WG" = 33 OR "WG" = 13) AND ("SPECIES_CO" = 'YBSA') AND ("WG" = 33 OR "WG" = 13) AND ("CUT_STUMPS" = 0)("CUT_STUMPS" = 0)

The results of the query showed that 6 yellow-bellied sap suckers The results of the query showed that 6 yellow-bellied sap suckers had been sighted in areas where old stumps were present, and had been sighted in areas where old stumps were present, and only 3 had been sighted in areas without stumps.only 3 had been sighted in areas without stumps.


The company I work for wants to post signs The company I work for wants to post signs identifying the types of birds that may be identifying the types of birds that may be found in certain areas along a found in certain areas along a demonstration trail. It is my job to post a demonstration trail. It is my job to post a sign at the conifer site. I must determine sign at the conifer site. I must determine which birds have been observed in stands which birds have been observed in stands that are at least 20 years old and are that are at least 20 years old and are composed of at least 50% jack pine, black composed of at least 50% jack pine, black spruce or white spruce.spruce or white spruce.


To determine which bird To determine which bird species have found to be species have found to be present in these present in these conditions, I devise the conditions, I devise the following query:following query:

("PJ" >=5 OR "SW" >=5 OR ("PJ" >=5 OR "SW" >=5 OR "SB" >=5) AND ("AGE" "SB" >=5) AND ("AGE" >=20)>=20)

The results of the query are The results of the query are presented in the following presented in the following table:table:

Species CodeWorking Group (≥

50%) Age

GCKI Black Spruce 74

MAWA Black Spruce 74

NAWA Black Spruce 74

WTSP Black Spruce 74

YBFL Black Spruce 74

AMRO Black Spruce 74

GCKI Black Spruce 74

NAWA Black Spruce 74

WTSP Black Spruce 74

AMRE Black Spruce 74

HETH Black Spruce 74

MAWA Black Spruce 74

MOWA Black Spruce 74


A wildlife researcher wants to know A wildlife researcher wants to know how many observations of magnolia how many observations of magnolia warblers occurred between 5:30 am warblers occurred between 5:30 am and 8:00 am in white birch or poplar and 8:00 am in white birch or poplar stands. I think she’s nuts for stands. I think she’s nuts for wanting this information, but I look wanting this information, but I look it up for her anyway. it up for her anyway.

Scenario 4Scenario 4To determine the number of magnolia warbler To determine the number of magnolia warbler

sightings for the biologist, I develop the sightings for the biologist, I develop the following query in the bird survey database:following query in the bird survey database:

("SPECIES_CO" = 'MAWA') AND ("START_TIME" <=800 ("SPECIES_CO" = 'MAWA') AND ("START_TIME" <=800 AND "START_TIME" >=530) AND ("WG" =33) AND AND "START_TIME" >=530) AND ("WG" =33) AND ("AGE" >=20)("AGE" >=20)

The results of the query showed there were three The results of the query showed there were three magnolia warbler sightings between 5:30 am and magnolia warbler sightings between 5:30 am and 8:00 am in poplar stands at least 20 years of age.8:00 am in poplar stands at least 20 years of age.

The EndThe End

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Applied GIS - 4215