Black Mountain Open Space Park
Basic information
Sample name: Black Mountain Open Space Park

Reference: C. L. Larson, S. E. Reed, and K. R. Crooks. 2020. Increased hiking and mountain biking are associated with declines in urban mammal activity. California Fish and Wildlife Recreation:52-61 [ER 3345]
Country: United States
State: California

Coordinate: 32° 59' N, 117° 7' W
Basis of coordinate: based on nearby landmark
Geography comments: "in San Diego"
coordinate based on Black Mountain Open Space Park
Climate and habitat
Habitat: Mediterranean woodland
Altered habitat: fragment
Protection: other protected area
Substrate: ground surface
Habitat comments: "The park is 951 ha, comprised primarily of coastal sage scrub and chaparral vegetation communities with some riparian and native and non-native grassland habitats. Dense suburban communities surround the park, and it contains approximately 32 kilometers of multi-use trails visited primarily by hikers and mountain bikers. The park also permits leashed dogs on the trails"
Life forms: carnivores, rodents, ungulates, other small mammals
Sampling methods: no design, automatic cameras
Sample size: 1110
Years: 2017, 2018
Seasons: winter, spring, autumn
Nets or traps: 7
Net or trap nights: 476
Camera type: digital
Cameras paired: no
Sampling comments: "We established a total of seven sampling points on official and unofficial trails within the park in January 2017... we installed one motion-triggered camera (Bushnell TrophyCam HD Aggressor) at each sampling point"
sampling was from November to February 2017 - 208 and April to May 2018
trap-days per camera are reported and total 596, but "we randomly subsampled 20% of photos between 11 am and 5 pm at all sampling points" (meaning that 75% of all hours were sample completely and 25% were sample at a rate of 20%, summing to 80% x 596 = 476 trap-days)
dogs, horses, and people were also photographed, but exact counts are not given
Sample: 3714
Contributor: John Alroy
Enterer: John Alroy
Created: 2020-11-01 19:49:42
Modified: 2020-11-01 19:49:42
Abundance distribution
7 species
1 singleton
total count 1110
standardised richness: 2.8
Fisher's α: 0.998
geometric series k: 0.3508
Hurlbert's PIE: 0.6146
Shannon's H: 1.0911
Good's u: 0.9991
Sylvilagus spp.537
bachmani and audubonii
Canis latrans40912 kg carnivore-insectivore
Lynx rufus1359.0 kg carnivore
Otospermophilus beecheyi22
Lepus californicus42.1 kg
Procyon lotor25.5 kg carnivore-granivore
Odocoileus hemionus165 kg browser