Evidence map›Paper›PMID 34586463›Full record

ReviewJournal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology2021

Waterfall low-frequency vibrations and infrasound: implications for avian migration and hazard detection.

Alfred J Bedard

Abstract readReview
PubMed Publisher
In one paragraph

Review in Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
1.8field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed, 12 citations in OpenAlex.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Alfred J BedardEarth System Research Laboratory, Physical Sciences Laboratory, Cooperative Institute for Research in Environmental Sciences, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, CO, 80305-3320, USA. alfred.j.bedard@noaa.gov.ORCID 0000-0002-1309-3205
National Oceanic and Atmospheric Administration · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many researchers have suggested that birds may use natural infrasound sources for navigation and hazard avoidance. However, there is a need to define the sound levels and frequencies to characterize potential infrasound sources. This paper summarizes new measurements from Niagara Falls which define a stable, powerful infrasound source that could be detected by birds on a regional scale of over 400 km. Measurements made in the vicinity of Niagara Falls show that exceptional infrasonic pressure levels can occur in the regions of large waterfalls (> 100 Pa at a range of about 500 m). This paper reviews investigator assessments of avian use of infrasound. A review of the results of Cornell researchers on pigeon hearing provides a basis for estimating avian detection ranges of waterfalls. It is possible that migrating birds use sounds from waterfalls as beacons- a component of their "navigation toolbox" as well as infrasound for hazard avoidance.

Indexed as

EnvironmentFresh WaterVibrationAcoustic StimulationAnimal MigrationAnimalsAuditory ThresholdBirdsHearingSoundSound SpectrographyAvian navigationHazard avoidanceInfrasoundWaterfallsWeirs

Identifiers

PMID34586463
OpenAlexW3203046542

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.