Barrett A. Garrison, Resource Assessment Program, California Department of Fish and Game, North Central Region
20070607
Acorns - Spears and Didion Ranches [ds322]
version 1
vector digital data
http://bios.dfg.ca.gov
ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/300_399/ds322.zip
These data are the characteristics and acorn counts from 2005 of individual live oak trees found in 0.05-ha circular habitat plots at Spears and Didion Ranches, Placer County, California. Acorns were counted over a 30-second period at each tree using binoculars. Each count involved two 15-second periods, one counting a lower section of a tree and one counting an upper section. Counts were done in mid-September 2005. Trees were tagged with individually numbered 2" diameter aluminum tree tags at 4.5 ft above the ground with the tags facing towards the center of the 0.05-ha sampling plot. There were three 0.05-ha circular habitat sampling plots at each of the 15 sample points, and there were 2-4 oaks per vegetation plot.
These data are intended to represent baseline data for wildlife communities and habitat conditions in these parks. They can be used to assess and monitor the park's ecological viability and sustainability.
20050911
20050914
ground condition
As needed
-121.208415
-121.165886
38.975931
38.964064
None
Quercus wislizenii
Quercus douglasii
acorn
Placer Legacy Program
Quercus lobata
blue oak
production
interior live oak
sample
valley oak
ISO 19115 Topic Category
biota
environment
None
California
Didion Ranch
Placer County
Sierra Nevada foothills
Spears Ranch
Public use.
These data can be used without constraints.
Resource Assessment Program, California Department of Fish and Game, North Central Region
Barrett A. Garrison
Staff Environmental Scientist
mailing
North Central Region
California Department of Fish and Game
1701 Nimbus Road
Rancho Cordova
CA
95670
(916) 358-2945
(916) 358-2912
bgarrison@dfg.ca.gov
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959
Permanently joined extended table contents into shapefile.
20090702
California Department of Fish and Game
Greg Ewing
bios@dfg.ca.gov
Vector
Entity point
98
NAD 1983 California Teale Albers
34.0
40.5
-120.0
0.0
0.0
-4000000.0
coordinate pair
0.000000003754707655900803
0.000000003754707655900803
meter
D North American 1983
GRS 1980
6378137.0
298.257222101
ds322
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
LATDD
Latitude in decimal degrees using NAD83 datum.
LONDD
Longitude in decimal degrees using NAD83 datum.
TREETAG
The number on a tag on a particular tree in this study.
COM_NAME
Common name of oak.
SCI_NAME
Scientific name of oak.
SEC_CNT
Number of viable acorns counted during a 30-second count (two 15-second counts on different parts of the tree). The 15-second counts were added together to yield the 30-second count.
DBH_INCHES
Diameter (inches) at breast height (4.5 ft above the ground) of the tree.
TREE_SHAPE
Shape of the tree.
C
Cylindrical
M
Mushroom
V
Vase
CROWN_POS
Position in the crown for the tagged tree.
O
Overstory where the tree receives almost full sunlight and is in the upper level of the canopy.
U
Understory where the tree is fully or partially shaded and is in the lower level of the canopy.
CROWN_CON
Amount (%) of tree's live crown that is in contact with adjacent trees.
COUNT_DATE
Date of acorn count and tree measurements.
POINT
Identification number of the sample point which contains 3 circular vegetation plots where the studied oak trees are located.
VEG_PLOT
Number of 0.05-ha vegetation plot where habitat samples were taken that matches the shapefile with vegetation sample points.
The biological data in each record has information on each oak sampled including an index of the number of acorns on it, its species, its size, shape, and its relationship with adjacent trees.
Biogeographic Data Branch, California Department of Fish and Game
Gordon Gould
mailing
1416 Ninth St., 12th floor
California Department of Fish and Game
Sacramento
CA
95814
Neither the State of California nor the California Department of Fish and Game warrant the correctness or accuracy of the observation data presented in here. They are used at the user's own risk.
None
Contact Distributor
1-2 weeks
20160229
Biogeographic Data Branch, California Department of Fish and Game
Gordon Gould
(916) 445-5006
ggould@dfg.ca.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time