EurekaMag.com logo
+ Site Statistics
References:
48,252,460
Abstracts:
22,798,453
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Evaluation of a telemetry system for measuring habitat usage in mountainous terrain


, : Evaluation of a telemetry system for measuring habitat usage in mountainous terrain. Northwest Science 61(4): 249-256

Telemetry, the use of radio-transmitters to follow wildlife, has enjoyed popularity and widespread use because it can generate much animal location and activity data in a limited time. When animals locations are estimated by triangulation based on angle of signals received, rather than on visual contact, it becomes important to understand equipment limitations that may influence the accuracy of signal origin estimation. Problems of estimating signal origin are magnified in mountainous terrain by signal reflection. We tested directional accuracy of a precision-null antenna system in mountainous terrain of northcentral Colorado [USA]. Statistical tolerance limits applied to a two-wavelength system with two, three-element antennas, separated by two wavelengths, gave measurement error of no more than .+-. 3.4.degree. (at least 90 percent of the time) at the 90 percent confidence level based on a mean of four readings per transmitting site, taken in rapid succession. A precision-null antenna system was found superior to a one-wavelength antenna type. Signal quality and accuracy in determination of signal directionality decreased with increased height of terrain obstacles between transmitter and receiver. Transmitter-receiver distance up to 4.6 km (the maximum tested) accounted for only eight percent of the variation in direction accuracy. Signal quality categories are described which can assist an operator in judging relative directional accuracy of received telemetry signals. A new approach to determining habitat usage by instrumented animals is described which utilizes composition of each vegetation type occurring in error polygons to reflect probability that the transmitter is located within a given vegetation type.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 005395792

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Froissart, R; Michalakis, Y; Blanc, S., 2002: Helper component-transcomplementation in the vector transmission of plant viruses. Plant viruses are most frequently transmitted from one host plant to another by vectors. In noncirculative vector transmission, the virus does not process through a cycle within the vector body. Instead, upon acquisition by the vector, viruses are...

Barsony, B., 1982: The design of agricultural machinery. The various stages of research and development in machine design are briefly outlined, e.g. collection of information and consideration of design variations, ergonomic analysis, modelling and prototype testing. Cab design and the design of a pea h...

Hicks, Karen A.; Sundas, Annika; Meeks Wagner, D. Ry, 1996: Arabidopsis early-flowering mutants reveal multiple levels of regulation in the vegetative-to-floral transition. Seminars in Cell & Developmental Biology 7(3): 409-418

Chung, Wen Hung; Hung, Shuen Ju; Hong, Hong Shang, 2004: A marker for Stevens-Johnson syndrome. Genetic factors in patients with Stevens-Johnson syndrome were studied. Stevens-Johnson syndrome and the related disease toxic epidermal necrolysis are life-threatening skin reactions to certain medications. Data were obtained on 44 Han Chinese...

Mollet B.; Delley M., 1991: A beta galactosidase deletion mutant of lactobacillus bulgaricus reverts to generate an active enzyme by internal dna sequence duplication. Several spontaneous Lac- deletion derivatives of the .beta.-galactosidase gene of Lactobacillus bulgaricus were analyzed for their phenotypic stability. We found that one of these mutants, lac 139, carrying a deletion of 30 bp within the gene, was...

Altergott, V. F., 1966: Biochemical mechanisms of the death of plants and their tolerance and adaptation to high temperature in natural conditions. Inst Ser Monogr Pure Appl Biol Div Zool 34: 275-282

Wong, Y. S.; Maclachlan, G. A., 1980: 1,3- beta -D-glucanases from Pisum sativum seedlings. 2 endo-1,3,- beta -D-glucanases were present in etiolated peas at opposite ends of the stem. Glucanase I from subapical regions degraded substrates to a series of low mol. wt. dextrins and was most readily assayed reductometrically (e.g. as lamina...

Payre, Francois; Buono, Pasqualina; Vanzo, Nathalie; Vincent, Alain, 1997: Two types of zinc fingers are required for dimerization of the serendipity delta transcriptional activator. The serendipity (sry) delta zinc finger protein controls bicoid gene expression during Drosophila melanogaster oogenesis. In addition, sry delta mutants display various zygotic phenotypes, ranging from abnormal embryogenesis to sex-biased adult le...

Pfeil T.; Hoffmann U.J.; Schwabl U.; Ulmer W.T.; Koenig W., 1988: Hypersensitivity to inhaled wheat flour allergens analysis of immunoglobulin isotypes by western blot. Immunobiology 178(1-2): 38-39

Esinhart, J. D.; Chinchilli, V. M., 1994: Sample size considerations for assessing individual bioequivalence based on the method of tolerance intervals. This is the consideration of sample sizes for assessing individual bioequivalence based on the use of tolerance intervals. The sample size procedures discussed include a direct distribution-free method, indirect parametric method and a direct para...