Results 91 to 100 of about 21,078 (266)

Current frontiers in the passive acoustic monitoring of bats

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Passive acoustic monitoring of bats is used in a growing number of studies in applied and basic research, from local to global scales. Despite the publication of good‐practice recommendations, several unsettled debates persist about the possibilities and limits offered by passive acoustic monitoring of bats.
Charlotte Roemer   +3 more
wiley   +1 more source

The connections of the inferior colliculus and the organization of the brainstem auditory system in the greater horseshoe bat (Rhinolophus ferrumequinum) [PDF]

open access: yes, 1981
The connections of the inferior colliculus, the mammalian midbrain auditory center, were determined in the greater horseshoe bat (Rhinolophus ferrumequinum), using the horseradish peroxidase method.
Adams   +70 more
core   +1 more source

Finding floral and faunal species richness optima among active fire regimes

open access: yesConservation Biology, EarlyView.
Abstract Changing fire regimes have important implications for biodiversity and challenge traditional conservation approaches that rely on historical conditions as proxies for ecological integrity. This historical‐centric approach becomes increasingly tenuous under climate change, necessitating direct tests of environmental impacts on biodiversity.
Zachary L. Steel   +8 more
wiley   +1 more source

The Sonar Model for Humpback Whale Song Revised

open access: yesFrontiers in Psychology, 2018
Why do humpback whales sing? This paper considers the hypothesis that humpback whales may use song for long range sonar. Given the vocal and social behavior of humpback whales, in several cases it is not apparent how they monitor the movements of distant
Eduardo Mercado III, Eduardo Mercado III
doaj   +1 more source

Bats respond positively to local drainage ditch vegetation and forest amount in the broader landscape in a North American agroecosystem

open access: yesConservation Science and Practice, EarlyView.
Using automated ultrasonic recorders, we assessed bat species richness and activity across agricultural drainage ditches that varied in mean vegetation height, variability in vegetation height, and mean width, as well as forest amount, distance to forest, and mean field size at the landscape scale in agroecosystems in eastern Ontario, Canada.
Marlena Warren   +5 more
wiley   +1 more source

Managing Clutter in a High Pulse Rate Echolocation System

open access: yesFrontiers in Neuroscience, 2018
The use of echolocation for navigating in dense, cluttered environments is a challenge due to the need for rapid sampling of nearby objects in the face of delayed echoes from distant objects.
Jacob Isbell   +3 more
doaj   +1 more source

How is the third jaw joint in whales different? Diverse modes of articulation between the jaws of whales

open access: yesJournal of Anatomy, EarlyView.
This study conducts the first comprehensive morphological investigation of the mandibular symphysis in whales. Using gross anatomical observation and CT cross‐sectional data, we describe diverse joint morphologies across 74 extant and fossil cetacean taxa. Toothed whales exhibit unfused, partially fused, or fully fused symphyses.
Rebecca J. Strauch   +2 more
wiley   +1 more source

The Development of a Single Frequency Place in the Mammalian Cochlea: The Cochlear Resonance in the Mustached Bat Pteronotus parnellii [PDF]

open access: yes, 2003
Cochlear microphonic potentials (CMs) were recorded from the sharply tuned, strongly resonant auditory foveae of 1- to 5-week-old mustached bats that were anesthetized with Rompun and Ketavet.
Drexl, Markus   +4 more
core   +2 more sources

Evidence for a Decrease in Vocalizations During Bubble Burst Production in Atlantic Bottlenose Dolphins (Tursiops truncatus)

open access: yesMarine Mammal Science, EarlyView.
ABSTRACT In Atlantic bottlenose dolphins, prior work has suggested that whistle vocalizations often have been observed to co‐occur with one bubble type, the bubble stream. However, vocal correlates have not been identified for another type of bubble, the bubble burst. While watching research session recordings, we serendipitously observed an absence of
Emma C. Miller   +3 more
wiley   +1 more source

DOLPHIN ECHOLOCATION [PDF]

open access: yesLe Journal de Physique IV, 1992
Latest achievments in understanding of mechanisms underlying dolphin echolocation are discussed. Main attention is drawn to dolphin detection and recognition in different acoustic conditions. Adaptation of echolocation signal parameters to changing ambient noise and reverberation are also considered.
openaire   +2 more sources

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