Bat monitoring in the Western Mojave Desert

Title Variants

Alternative: Effects of off-highway vehicles on the desert ecosystem

By

Keith, Kevin
Ruelle, Morgan.
United States. Bureau of Land Management. Ridgecrest Field Office.

Type

Book

Material

Published material

Publication info

[Ridgecrest, CA], U.S. Department of the Interior, Bureau of Land Management, Ridgecrest Field Office, ℗♭2003

Notes

Contents: pt. I : Protocol for long-term monitoring of bats in the Ridgecrest Resource Area / | pt. II : Bat survey summary: 2002-2003 / | pt. III : Raw data from 2003. | Morgan Ruelle. | Morgan Ruelle. | Statement of purpose -- | Objective -- | Methods -- | Materials -- | Goals for winter 2002/2003 -- | Preliminary budget 2002/2003 -- | Pre-survey results : high priority adits -- | Pre-survey results : high priority shafts -- | Mines used by bats -- | Species identified by acoustic surveys -- | Pre-survey adit visits -- | Pre-survey shaft visits -- | Pre-survey prospect visits -- | Bat outflights counts : all features -- | Anabat survey : survey nights -- | Anabat survey : species code summary -- | Anabat survey : species and call time summary.

In 2001, a Desert Monitoring Team was hired by the Bureau of Land Management to monitor the effects of Off-Highway Vehicles (OHV's) on the desert ecosystem. Abandoned mines have a widespread distribution in the Mojave Desert, and many of these mines now serve as bat habitat. One of the team's tasks was to develop an long-term monitoring plan for bats in areas where OHV recreation takes place. The team biologist developed a three-part protocol: 1) pre-surveys of abandoned mines to assess the likelihood of use of each mine feature by bats; 2) portal surveys to detect use of abandoned mines by bats; and, 3) bat species identification by analyzing ecolocation calls collected at water sources. In 2003, the team biologist began monitoring for bats based on this protocol. This document describes steps taken as well as the survey results.

Title from cover page.

"October, 2003."

Subjects

Abandoned mines , Bats , California , Desert ecology , Effect of human beings on , Environmental aspects , Habitat , Habitat (Ecology) , Management , Mojave Desert , Monitoring , Nature , Off-road vehicles , Public lands , Risk assessment , United States , Wildlife monitoring

Call Number

QH545.A43 B38 2003

Language

English

Identifiers

DOI: https://doi.org/10.5962/bhl.title.153831
OCLC: 999821111