Long-eared Myotis Snag Roosts

Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Entity_and_Attribute_Information
Metadata_Reference_Information

Identification_Information:

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: Verified spreadsheets with data sheets

Logical_Consistency_Report: does not apply

Completeness_Report:

Snags in clearcuts were excluded from the random samples

Lineage:

Methodology:

Methodology_Type: Field

Methodology_Description:

Mist nets, harp traps, hoop nets (Kunz and Kurta 1988), and H-nets were used (Waldien and Hayes submitted) to capture bats over ponds and streams and at bridges used as night-roosts from May through August in 1996 and June through August in 1997. Sites were selected based on equipment limitations (e.g., size of mist nets) and access to the site by road or trail with most sites being trapped more than once to maximize opportunities to capture female long-eared myotis. Capture periods generally were initiated at sunset and lasted three to four hours depending on logistics and weather conditions. Captured bats were identified to species, sex, relative age (adult or juvenile) based on the degree of ossification in the epiphyseal growth plates (Anthony 1988), and reproductive condition (Racey 1988). Radio transmitters (0.51 g) were attatched (model LB2, Holohil Systems Ltd.,112 John Cavanagh Road, Carp, Ontario, KOA 1L0, Canada) to 21 female and 3 male long-eared myotis during June, July, and August 1996 and 1997. The transmitters attached to bats exceeding 6.5g in weight that were not in a late stage of pregnancy. Transmitters weighed 6.7-7.8% of body mass. A small patch of fur was trimmed between the scapula and the transmitter was attached to the bat using Skin-Bond (Smith and Nephew United, Inc., Largo, FL) and held the transmitters firmly in place for 1-2 minutes. The bats were placed in a container for 20-30 minutes to allow the adhesive to set and released the bat at the capture site. Wildlife Materials TRX-1000S (Wildlife Materials, Inc.; Carbondale, Illinois) and Telonics TR-2 (Telonics, Telemetry-Electronic Consultants; Mesa, Arizona) receivers were used, and hand-held 4- and 6-element yagi antennas to track bats to roosts on a daily basis. The structures located were used for day-roosts by tracking instrumented bats to these sites. A structure was verified as a roost only if I confirmed that the instrumented bat had left the roost. This was accomplished by monitoring the radio signal and roosts at dusk. This protocol may have eliminated some structures used as day-roosts where a bat shed its transmitter, but minimized misclassification of structures where transmitters had been shed by bats flying over a structure or at night-roosts. Day-roosts were located on U.S.G.S. topographic maps and with a geographical positioning system (GPS; TrimbleNavigation, Ltd., Sunnyvale, California). Each roost was classified by female long-eared myotis into one of three categories: dead or defective conifer trees (completely dead trees and live trees with structural defects such as a dead top), conifer stumps (structures less than 3 m in height created by a conifer tree < 100 years old being cut), and all other roost structures (i.e., live conifers with no structural defects, logs, and hardwoods). A stand defined to be an area of similar vegetative composition and structure. Topographic features (e.g., ridges and stream) were used to define boundaries of stands in areas with relatively large forest tracts of similar age or structure; resulting stand boundaries generally were consistent with management boundaries. Data were collected on characteristics of roosts and randomly selected structures at multiple spatial scales. For dead or defective conifer trees, data were collected on characteristics of structures (structure-scale) and habitat within 5-, 10-, 20-, and 50-meter radius concentric plots (plot-scale). Data were also selected for spatial relationships with landscape features and other variables which did not naturally fit in either the structure- or plot-scales (larger-scale). There were examined spatial relationships between roosts and available water in the landscape by testing for differences in distance between roosts and random points in the landscape to available water. The vailable water was defined as a pond or stream (medium or large) where bats could access water. GIS was used to define a landscape of available habitat based on the maximum distance a female long-eared myotis was detected from a known roost by placing a 2.4 km radius buffer centered on each roost used by females and combined contiguous buffers into continuous polygons associated with each capture area. Random numbers were used as a generator in GIS to place 50 random points within each polygon and measured distance from each roost and random point to available water and stand condition at each roost and random point.

Methodology_Citation:

Citation_Information:

Originator: T.H. Kunz (editor)

Publication_Date: 1988

Title:

Ecological and behavioral methods for the study of bats

Publication_Information:

Publication_Place: Washington, D.C.
Publisher: Smithsonian Institute Press

Other_Citation_Details: 533 pp

Source_Information:

Source_Citation:

Citation_Information:

Originator: David L.Waldien
Publication_Date: Unpublished Material
Title: gps locations

Type_of_Source_Media: electronic file

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1996
Ending_Date: 1997

Source_Currentness_Reference: observed

Source_Citation_Abbreviation: gps_locations

Source_Contribution: Locations of snags

Source_Information:

Source_Citation:

Citation_Information:

Originator: James Kiser
Publication_Date: Unpublished Material
Title: Air Photo Interpretations

Source_Scale_Denominator: 12000

Type_of_Source_Media: photographs

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1996
Ending_Date: 1997

Source_Currentness_Reference: observed

Source_Citation_Abbreviation: photo_interp

Source_Contribution:

Air photos were used to estimate canopy cover in proximity to snag locations and distance measurements to water, stand edge, capture site and roads.

Process_Step:

Process_Description:: GPS locations were corrected based on local base stations
Process_Date: 1997

Process_Step:

Process_Description:: Air photos were interpreted for appropriate measurement
Process_Date: 1997

Taxonomic_System:

Taxonomic_Procedures:: Captured bats were identified to species, sex, relative, age (adult or juvenile) based on the degree of ossification in the epiphyseal growth plates (Anothony 1988), and reproductive condition (Racey 1988)

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: McKenzie River and Fall Creek basins

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: \snags.xls
Entity_Type_Definition:: Microsoft Excel Spreadsheet - Data associated with snags used as day-roosts by female long-eared myotis and random snags.
Entity_Type_Definition_Source: software generated

Attribute:

Attribute_Label: Use

Attribute_Definition: identifies the structure as used or random

Attribute_Definition_Source: user-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: random
Enumerated_Domain_Value_Definition_Source: user-defined
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: used
Enumerated_Domain_Value_Definition_Source: user-defined

Attribute:

Attribute_Label: Year

Attribute_Definition: identifies the year in which the roost was used

Attribute_Definition_Source: user-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: 1996
Enumerated_Domain_Value_Definition_Source: user-defined
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: 1997
Enumerated_Domain_Value_Definition_Source: user-defined

Attribute:

Attribute_Label: WS

Attribute_Definition: identifies the watershed the data are associated with

Attribute_Definition_Source: user-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Fall Creek
Enumerated_Domain_Value_Definition_Source: user-defined
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: South Fork McKenzie River
Enumerated_Domain_Value_Definition_Source: user-defined

Attribute:

Attribute_Label: Area

Attribute_Definition: identifies the capture site the structure was associated with

Attribute_Definition_Source: user-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: 1828 bridge
Enumerated_Domain_Value_Definition_Source: user-defined
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: Coopers pond
Enumerated_Domain_Value_Definition_Source: user-defined

Attribute:

Attribute_Label: STND

Attribute_Definition: identifies the stand the structure was located in

Attribute_Definition_Source: user-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: in the flood plain around the 1828 road
Enumerated_Domain_Value_Definition_Source: user-defined
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: above the 1828 road
Enumerated_Domain_Value_Definition_Source: user-defined
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: south of Fall Creek
Enumerated_Domain_Value_Definition_Source: user-defined
Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition: Coopers-BLM
Enumerated_Domain_Value_Definition_Source: user-defined

Attribute:

Attribute_Label: ASP

Attribute_Definition:

aspect (slope direction) of the slope on which the structure was located

Attribute_Definition_Source: user-defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 360

Attribute_Units_of_Measure: degrees

Attribute:

Attribute_Label: SLP

Attribute_Definition: angle of the slope on which the structure was located

Attribute_Definition_Source: user-defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100

Attribute_Units_of_Measure: percent

Metadata_Reference_Information:

Generated by mp on Tue Apr 18 10:25:45 2000