Data supporting the Oregon Breeding Bird Atlas
(see data files for a short introduction.)
File: EFFORTHX.TXT
General Description: Ownership status is most likely to influence observer effort. EFFORTHX contains the observer hours, observer years, and number of observers for each hexagon, along with data relating to land ownership in the hexagon.
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Although we have made the data from this project accessible to anyone,
all the time the authors spent administering this project, as well as time spent
computerizing, organizing, and documenting the data, was uncompensated.
Moreover, not every limitation of the data has been described.
For these reasons, we request that researchers who wish to publish
statistical analyses of these data please contact us first to discuss
the data and opportunities for joint authorship of resulting publications.
Furthermore, we again thank the Oregon Natural Heritage Program and the
USEPA for sharing with us some of the non-avian data sets.
Contact us at: |
Fields (16, comma-delimited):
HexagonID
Percent of the hexagon located in Oregon (excluding ocean)
Hexagon cumulative linear distance of mapped roads (EPA calculation)
Hexagon acres in Oregon
Hexagon number of atlasing hours
Hexagon number of observers
Hexagon number of years covered
Hexagon status 1 ownership (acres)
Hexagon status 1+2 ownership (acres)
Hexagon status 1+2+3 ownership (acres)
Hexagon status 1+2+3+4 ownership (acres)
Hexagon status 1 ownership (%)
Hexagon status 1+2 ownership (%)
Hexagon status 1+2+3 ownership (%)
Hexagon status 1+2+3+4 ownership (%)
Hexagon cumulative linear distance of mapped roads (EPA calculation)
Note: The above ownership status levels are defined as follows (from Kagan et al. 1999):
Status 1: An area having permanent protection from conversion of natural land cover and a mandated management plan in operation to maintain a natural state within which disturbance events (of natural type, frequency, and intensity) are allowed to proceed without interference or are mimicked through management.
Status 2: An area having permanent protection from conversion of natural land cover and a mandated management plan in operation to maintain a primarily natural state, but which may receive use or management practices that degrade the quality of existing natural communities.
Status 3: An area having permanent protection from conversion of natural land cover for the majority of the area, but subject to extractive uses of either a broad, low-intensity type or localized intense type. It also confers protection to federally listed endangered and threatened species throughout the area.
Status 4: Lack of irrevocable easement or mandate to prevent conversion of natural habitat types to anthropogenic habitat types. Allows for intensive use throughout the tract. Also includes those tracts for which the existence of such restrictions or sufficient information to establish a higher status is unknown.