Relationships between gray whale (Eschrichtius robustus) calling rates, group size, and ambient noise levels in Laguna San Ignacio, Mexico.

2011 ◽  
Vol 129 (4) ◽  
pp. 2637-2637
Author(s):  
Diana Ponce‐Morado ◽  
Aaron M. Thode ◽  
Melania Guerra ◽  
Jorge Urban ◽  
Steven Swartz
Keyword(s):  
Group Size ◽  
Ambient Noise ◽  
Gray Whale ◽  
Eschrichtius Robustus ◽  
Noise Levels

Ambient noise and gray whale Eschrichtius robustus behavior

2006 ◽  
Vol 120 (5) ◽  
pp. 3265-3265
Author(s):  
Francisco Ollervides ◽  
Kristin Kuester ◽  
Hannah Plekon ◽  
Sarah Rohrkasse ◽  
Kristin Kuester ◽  
...  
Keyword(s):  
Ambient Noise ◽  
Gray Whale ◽  
Eschrichtius Robustus

scholarly journals Application of a Prediction Model for Ambient Noise Levels and Acoustical Capacity for Living Rooms in Nursing Homes Hosting Older People with Dementia

2020 ◽  
Vol 10 (12) ◽  
pp. 4205 ◽  
Author(s):  
Paul Devos ◽  
Francesco Aletta ◽  
Pieter Thomas ◽  
Tara Vander Mynsbrugge ◽  
Mirko Petrovic ◽  
...  
Keyword(s):  
Nursing Home ◽  
Nursing Homes ◽  
Prediction Model ◽  
Group Size ◽  
Ambient Noise ◽  
Verbal Communication ◽  
Living Room ◽  
Noise Levels ◽  
People With Dementia

Acoustic comfort is becoming an increasingly important dimension for practitioners in the context of design of care facilities for older adults, namely nursing homes. Defining the quality of these spaces based on room acoustics criteria alone might be challenging if aspects related to their functioning (e.g., speech-based activities) are not taken into account. The acoustical capacity concept has been previously proposed for eating establishments as a way to provide a quality assessment based on both physical characteristics of the space and the perceived quality of verbal communication. In this study, a revised version of a prediction model for ambient noise levels based on occupancy and an estimation of acoustical capacity are proposed for nursing homes hosting people with dementia, and the corresponding parameters of slope, group size and absorption per person are optimized for the specific application, using a Nursing Home in Flanders (Belgium) participating to the AcustiCare project as case study. Results show that, compared to normal eating establishments, lower absorption per person values and higher group size values should be used in nursing homes to reduce errors in ambient noise levels prediction. Furthermore, using a retrofit intervention carried out in the living room of the Nursing Home, the enhanced acoustical capacity of the space was analysed. Results, in this case, show that, prior to the retrofit intervention, the acoustical capacity was already exceeded with average occupancy (i.e., saturated in normal functioning conditions), while the reduction in reverberation time achieved with the retrofit increased considerably the acoustical capacity of the space, shifting the quality of verbal communication in the living room from insufficient to satisfactory.

scholarly journals Sounds of Stress: Assessment of Relationships between Ambient Noise, Vessel Traffic, and Gray whale Stress Hormone

2021 ◽  
Author(s):  
Leila S. Lemos ◽  
Joseph H. Haxel ◽  
Amy Olsen ◽  
Jonathan D. Burnett ◽  
Angela Smith ◽  
...  
Keyword(s):  
Ambient Noise ◽  
Anthropogenic Activities ◽  
Gray Whale ◽  
Sample Collection ◽  
Noise Levels ◽  
Baleen Whales ◽  
Individual Level ◽  
Ocean Noise ◽  
Metabolite Concentrations ◽  
The Individual

Abstract Elevated noise from human activities in nature can impact animal behavior and physiology, with subsequent impacts on individual health and population dynamics. Baleen whale communication, navigation, habitat use, and ability to recognize and locate prey and predators may be impaired by anthropogenic activities that increase ocean noise within the whales' hearing frequency range. To understand the physiological impacts of noise disturbance on baleen whales, we investigated the adrenal stress response of gray whales (Eschrichtius robustus) to variable ambient noise levels through an assessment of fecal glucocorticoid metabolite concentrations. This analysis was conducted at the individual level, at multiple temporal scales (1-7 days), and accounted for factors that may confound glucocorticoid hormone concentrations: sex, age, nutritional status, and reproductive state. Data were collected along the Oregon coast, USA, from June to October of 2016-2018. Results indicate a significant positive correlation between underwater noise levels and vessel traffic. Vessel counts from the day prior to fecal sample collection and sex had significant positive relationships with glucocorticoid metabolite concentrations. This study increases knowledge of gray whale physiological response to variable ocean noise and may inform management decisions regarding regulations of anthropogenic noise activities and thresholds near critical whale habitats.

First Photographic Match of an Anomalously White Gray Whale (Eschrichtius robustus) in the Northeastern Chukchi Sea, Alaska, and Baja California, Mexico

2018 ◽  
Vol 44 (1) ◽  
pp. 7-12
Author(s):  
Amy L. Willoughby ◽  
Megan C. Ferguson ◽  
Janet T. Clarke ◽  
Amelia A. Brower
Keyword(s):  
Baja California ◽  
Chukchi Sea ◽  
Gray Whale ◽  
Eschrichtius Robustus

New Record of Atypical Coloration in a Gray Whale Calf (Eschrichtius robustus) in Laguna Ojo de Liebre, Baja California Sur, Mexico

2017 ◽  
Vol 43 (6) ◽  
pp. 644-648
Author(s):  
César A. Salinas-Zavala ◽  
María V. Morales-Zárate ◽  
Andrés González-Peralta ◽  
Rosa J. Aviña-Hernández ◽  
Mariana L. Muzquiz-Villalobos
Keyword(s):  
New Record ◽  
Baja California ◽  
Gray Whale ◽  
Baja California Sur ◽  
Eschrichtius Robustus

Influence of Wind-produced Noise on Orientation in the Sole (Solea solea)

1994 ◽  
Vol 51 (6) ◽  
pp. 1258-1264 ◽  
Author(s):  
J. P. Lagardère ◽  
M. L. Bégout ◽  
J. Y. Lafaye ◽  
J. P. Villotte
Keyword(s):  
Spatial Distribution ◽  
Ambient Noise ◽  
Sound Intensity ◽  
Weather Conditions ◽  
Fish Populations ◽  
Positioning System ◽  
Noise Levels ◽  
Orientation Behaviour ◽  
Solea Solea ◽  
Swimming Trajectories

Sole (Solea solea), telemetered in an enclosure using an acoustic positioning system, changed their swimming trajectories and orientation behaviour as a function of wind strength and direction. Monitoring of the spatial variation in both wind-generated currents and noise spectra in the enclosure indicates that these behavioural changes correspond to patterns in the spatial distribution of noise and to sound intensity. Thus, our observations indicate that sole perceives and reacts to horizontal variability in ambient noise levels. Such behaviour may be important in determining movements of fish populations at sea during poor weather conditions.

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