Emily Racenet (Former Employee)
Science and Products
Parturition Analyses based on GPS Collar Videos from Female Caribou of the Porcupine and Western Arctic Herds Parturition Analyses based on GPS Collar Videos from Female Caribou of the Porcupine and Western Arctic Herds
Adult female caribou from the Porcupine herd (PCH; 2018-2023) and Western Arctic herd (WAH; 2021, 2023) were fitted with GPS video collars (Vertex Plus, Vectronic Aerospace; 9 sec videos every 20-30 min) to assess parturition, neonate survival (birth through 30 June), and antler shedding. We used video data to validate antler- and movement-based methods for estimating reproduction in...
Walrus Counts Apparent from Aerial Survey Images Collected Near Point Lay, Alaska Walrus Counts Apparent from Aerial Survey Images Collected Near Point Lay, Alaska
This dataset provides walrus counts in 10 m by 10 m square grid cells randomly selected from a standard set of grid cells established for the study area and that intersected with previously published walrus herd outlines and overlain on aerial survey imagery. Results are provided as geospatial polygons saved in the shapefile format. These data are based on visual interpretation of...
Walrus Haulout Audio Recordings Near Point Lay 2024 Walrus Haulout Audio Recordings Near Point Lay 2024
This dataset consists of a complete set of audio recordings collected near a large walrus haulout at Point Lay, Alaska, during September of 2024. The recordings were collected using the Song Meter Mini 2 (Wildlife Acoustics, Inc., Maynard, MA) at two sites, one within 150 m of a large walrus herd resting on shore and one placed more than 4 km to the south of the herd directly under the...
Walrus Haulout Outlines Apparent from Aerial Survey Images Collected Near Point Lay, Alaska Walrus Haulout Outlines Apparent from Aerial Survey Images Collected Near Point Lay, Alaska
This dataset provides walrus haulout group outlines in a shapefile format and haulout area sizes in csv format. These data are based on visual interpretation of imagery from aerial surveys by a small uncrewed aerial system (sUAS) operated by the U.S. Geological Survey Alaska Science Center, over large groups of walruses resting onshore near Point Lay, Alaska during September of 2024 and...
Science and Products
Parturition Analyses based on GPS Collar Videos from Female Caribou of the Porcupine and Western Arctic Herds Parturition Analyses based on GPS Collar Videos from Female Caribou of the Porcupine and Western Arctic Herds
Adult female caribou from the Porcupine herd (PCH; 2018-2023) and Western Arctic herd (WAH; 2021, 2023) were fitted with GPS video collars (Vertex Plus, Vectronic Aerospace; 9 sec videos every 20-30 min) to assess parturition, neonate survival (birth through 30 June), and antler shedding. We used video data to validate antler- and movement-based methods for estimating reproduction in...
Walrus Counts Apparent from Aerial Survey Images Collected Near Point Lay, Alaska Walrus Counts Apparent from Aerial Survey Images Collected Near Point Lay, Alaska
This dataset provides walrus counts in 10 m by 10 m square grid cells randomly selected from a standard set of grid cells established for the study area and that intersected with previously published walrus herd outlines and overlain on aerial survey imagery. Results are provided as geospatial polygons saved in the shapefile format. These data are based on visual interpretation of...
Walrus Haulout Audio Recordings Near Point Lay 2024 Walrus Haulout Audio Recordings Near Point Lay 2024
This dataset consists of a complete set of audio recordings collected near a large walrus haulout at Point Lay, Alaska, during September of 2024. The recordings were collected using the Song Meter Mini 2 (Wildlife Acoustics, Inc., Maynard, MA) at two sites, one within 150 m of a large walrus herd resting on shore and one placed more than 4 km to the south of the herd directly under the...
Walrus Haulout Outlines Apparent from Aerial Survey Images Collected Near Point Lay, Alaska Walrus Haulout Outlines Apparent from Aerial Survey Images Collected Near Point Lay, Alaska
This dataset provides walrus haulout group outlines in a shapefile format and haulout area sizes in csv format. These data are based on visual interpretation of imagery from aerial surveys by a small uncrewed aerial system (sUAS) operated by the U.S. Geological Survey Alaska Science Center, over large groups of walruses resting onshore near Point Lay, Alaska during September of 2024 and...