scholarly journals Female Agassiz’s desert tortoise activity at a wind energy facility in southern California: The influence of an El Niño event

2012 ◽  
Vol 04 (01) ◽  
pp. 30-37 ◽  
Author(s):  
Josh R. Ennen ◽  
Kathie Meyer ◽  
Jeffrey Lovich
Keyword(s):  
Wind Energy ◽  
Southern California ◽  
Desert Tortoise ◽  
Energy Facility

Nesting Ecology of a Population of Gopherus agassizii at a Utility-Scale Wind Energy Facility in Southern California

Copeia ◽  
2012 ◽  
Vol 2012 (2) ◽  
pp. 222-228 ◽  
Author(s):  
Joshua R. Ennen ◽  
Jeffrey E. Lovich ◽  
Katherin P. Meyer ◽  
Curtis Bjurlin ◽  
Terence R. Arundel
Keyword(s):  
Wind Energy ◽  
Southern California ◽  
Gopherus Agassizii ◽  
Nesting Ecology ◽  
Energy Facility ◽  
Utility Scale

scholarly journals Echolocation activity of migratory bats at a wind energy facility: testing the feeding-attraction hypothesis to explain fatalities

2018 ◽  
Vol 99 (6) ◽  
pp. 1472-1477 ◽  
Author(s):  
Jesika P Reimer ◽  
Erin F Baerwald ◽  
Robert M R Barclay
Keyword(s):  
Wind Energy ◽  
Energy Facility

Birds not in flight: using camera traps to observe ground use of birds at a wind-energy facility

2021 ◽  
Author(s):  
Shellie R. Puffer ◽  
Laura A. Tennant ◽  
Jeffrey E. Lovich ◽  
Mickey Agha ◽  
Amanda L. Smith ◽  
...  
Keyword(s):  
Wind Energy ◽  
Camera Traps ◽  
Energy Facility

scholarly journals Fabrication and Experimentation of Diffuser Augmented Wind Turbine

2019 ◽  
Vol 8 (2) ◽  
pp. 6047-6052
Keyword(s):  
Wind Tunnel ◽  
Wind Energy ◽  
Wind Turbine ◽  
Ansys Fluent ◽  
Throat Region ◽  
Pressure Transducers ◽  
Reference Velocity ◽  
Energy Facility ◽  
Horizontal Axis Wind Turbines ◽  
Flow Through

Wind Energy is turning into a big supply of renewable energy throughout the globe. This ever increasing field can probably reach the limit of accessibility and utility with the wind energy facility sites and size of the turbine itself. Therefore, it's needed to develop wind capturing devices that may produce energy within the locations wherever typical horizontal axis wind turbines (HAWTs) are too unrealistic to put in and operate. A diffuser augmented wind turbine (DAWT) is one such invention. DAWTs increase the ability output of the rotor by increasing the wind speed into the rotor employing a duct. The main objective of the project is to analyze the flow through the diffuser by placing it in wind tunnel and further the results are compared with the computational results. The purpose of investigating the flow through, the diffuser is to find out the behavior of wind flow at the throat region of the diffuser. Numerical analysis of diffuser is performed using the tool ANSYS FLUENT 15 and then by experimentation in wind tunnel. Experiments were carried out for investigating the flow pattern inside the circular profile diffuser of radius 60mm, Throat diameter of 200mm, inlet and outlet diameter of diffuser is 320mm. Pitot tubes are inserted on the rake and then mount on the throat region of diffuser for flow measurement in that region. Differential pressure transducers which gives voltage output are used for sensing the pressures from Pitot tubes, static tubes which is mount on surface of test section of tunnel and PS tube which is used for reference velocity. Further obtained pressure will be converted to velocity and get the required result. After completion of computational and experimental work comparable results were obtained.

scholarly journals Anthropogenic noise does not surpass land cover in explaining habitat selection of Greater Prairie-Chicken (Tympanuchus cupido)

The Condor ◽  
2019 ◽  
Author(s):  
Edward J Raynor ◽  
Jocelyn Olney Harrison ◽  
Cara E Whalen ◽  
Jennifer A Smith ◽  
Walter H Schacht ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Wind Energy ◽  
Anthropogenic Noise ◽  
Frequency Noise ◽  
Tympanuchus Cupido ◽  
Energy Facility ◽  
Prairie Chicken ◽  
Greater Prairie Chicken ◽  
The Impact

Abstract Over the last century, increasing human populations and conversion of grassland to agriculture have had severe consequences for numbers of Greater Prairie-Chicken (Tympanuchus cupido). Understanding Greater Prairie-Chicken response to human disturbance, including the effects of anthropogenic noise and landscape modification, is vital for conserving remaining populations because these disturbances are becoming more common in grassland systems. Here, we evaluate the effect of low-frequency noise emitted from a wind energy facility on habitat selection. We used the Normalized Difference Soundscape Index, a ratio of human-generated and biological acoustic components, to determine the impact of the dominant acoustic characteristics of habitat relative to physical landscape features known to influence within–home range habitat selection. Female Greater Prairie-Chickens avoided wooded areas and row crops but showed no selection or avoidance of wind turbines based on the availability of these features across their home range. Although the acoustic environment near the wind energy facility was dominated by anthropogenic noise, our results show that acoustic habitat selection is not evident for this species. In contrast, our work highlights the need to reduce the presence of trees, which have been historically absent from the region, as well as decrease the conversion of grassland to row-crop agriculture. Our findings suggest physical landscape changes surpass altered acoustic environments in mediating Greater Prairie-Chicken habitat selection.

Estimating bat fatality at a Texas wind energy facility: implications transcending the United States–Mexico border

2020 ◽  
Author(s):  
Sara P Weaver ◽  
Amanda K Jones ◽  
Cris D Hein ◽  
Ivan Castro-Arellano
Keyword(s):  
United States ◽  
Wind Energy ◽  
The United States ◽  
Energy Development ◽  
Northern Mexico ◽  
Energy Facility ◽  
United States Mexico Border ◽  
Mexico Border ◽  
Wind Energy Development ◽  
United States Mexico

Abstract Wind energy development causes bat fatalities. Despite emphasis on understanding and reducing these impacts, few data are available for the southwest region of the United States and northern Mexico. We monitored bat fatalities for a full year (March 2017–March 2018) at a wind energy facility in south Texas near the United States–Mexico border. We established search plots of 100-m radius at eight randomly selected turbines (of 255) and searched the roads and pads at an additional 92 turbines. We conducted weekly searches from spring through fall and bimonthly during winter. We used GenEst (Generalized Mortality Estimator) to estimate bat fatalities corrected for searcher efficiency, carcass removal, and density-weighted proportion of area searched. We found 205 bats during standardized searches, the majority of which were Brazilian free-tailed bats (Tadarida brasiliensis, 76%). The corrected fatality estimates were 16 bats/megawatt/year (95% confidence interval [CI]: 12 – 30 bats/megawatt/year) across all species. Species composition at our site is similar to that of northern Mexico, an area of expanding wind energy development with no published studies.

Sign in / Sign up

Export Citation Format

Share Document