441 Works

The effect of resource limitation on floral visitors of Monardella odoratissima

Isabelle Everhart, Ashish Kothari, Chris McCarron & Tricia Nguyen
Fluctuating flowering patterns affect an environments floral abundance, impacting the spatial structure of nectar and pollen resources, ultimately influencing floral visitor foraging behavior. We examined the effect of reducing floral resources on floral visitors of Monardella odoratissima, commonly known as the mountain coyote mint. Isolated patches of M. odoratissima were created by removing all surrounding resources, in order to test its effect on floral visitor communities. Exploring how the resource-richness of a habitat affects this...

Effects of disturbance on biological soil crusts

Alexandra Reep, Christian Morgan & Lilianne De La Espriella
Drylands are prone to desertification as human disturbances degrade desert ecosystems and limit their capacity to bio-produce. Biological soil crusts, a specialized community of lichen and cyanobacteria, are particularly vulnerable to these disturbances. To gauge the effects of anthropogenic disturbance on soil particle size and soil crust growth, Collema, a widely-distributed genus of soil lichen, was used as an indicator of overall ecosystem health. We used the visual percent cover method in four “low disturbance”...

Paving the way for habitat disturbance: Different road types have distinct ecological impacts on annual plant communities and gall-forming insects in the Mojave Desert

Maria Carias, Emily Hascall, Kelsey Pennington & Jasmine Summers-Evans
Road disturbance can facilitate the establishment and growth of invasive plant species and herbivorous insects in adjacent ecosystems. The hydrological and atmospheric impacts of roads are especially important to understand in arid desert environments that are highly sensitive to water stress and dust pollution. In this study, we looked at how impacts of road disturbance change among different road types within the Mojave Desert. Specifically, we observed how three types of roads (paved road, dirt...

Benthic macroinvertebrates in Marin County streams: species richness is lower near human infrastructure

Alice Beittel, Madeline Hale, Caitlin Loeffler, Tanvi Mamtora & Natalia Mushegian
Streams and rivers represent less than 0.0001% of the planet's water, but are support up to 10% of its biological diversity and are fundamental to human life. As sources of drinking water, transportation, recreation, and energy, streams are both highly valuable and highly vulnerable to us. Humans have obvious imperative to protect stream ecosystems, but many effects are likely to be unintentional and unseen, incidental to our existing in a place. We sampled stream macroinvertebrate...

Rancho Seco vernal pool community data

Julia Michaels
Disturbance often increases local-scale (α) diversity by suppressing dominant competitors. However, widespread disturbances may also reduce biotic heterogeneity (β diversity) by making the identities and abundances of species more similar among patches. Landscape-scale (γ) diversity may also decline if disturbance-sensitive species are lost. California’s vernal pool plant communities are species-rich due in part to two scales of β diversity: (1) within pools, as species composition changes with depth (referred to here as vertical β diversity),...

Improve Water Quality in Rural Immigrant Communities. Policy Brief Vol.3, No. 3

Lucia Kaiser Caitlin French

Family Planning Programs Lift Children out of Poverty. Policy Brief Vol. 2, No. 13

Olga Malkova Martha J. Bailey

Low-wage Work Uncertainty often Traps Low-wage Workers. Policy Brief Vo1. 2, No. 9

Brian Halpin Victoria Smith

Nearby Role Models May Lead to Poorer Health. Policy Brief Vol.1, No. 3

Elyse Kovalsky

Private Schools & Public Options Help Predict Which Families Use Vouchers. Policy Brief Vol.1, No.14

Cassandra M.D. Hart

The Supplemental Poverty Measure: A Better Measure for Poverty in America? Policy Brief Vol.1, No.6

Anupama Jacob

Boyd Deep Canyon Desert Research Center

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Scripps Coastal Reserve

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

James San Jacinto Mountains Reserve

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Valentine Camp

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Quail Ridge Reserve

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Sedgwick Reserve

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Kenneth S. Norris Rancho Marino Reserve

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Sagehen Creek Field Station

Information Manager UCNRS
MISSION STATEMENT: The UC Natural Reserve System is a network of protected natural areas throughout California. Its 39 sites include more than 756,000 acres, making it the largest university-administered reserve system in the world. Most major state ecosystems are represented, from coastal tidepools to inland deserts, and lush wetlands to Sierra Nevada forests. The reserves also serve as a gateway to more than a million acres of public lands. Founded in 1965 to provide undisturbed...

Steroid concentrations in boar tissues

Trish Berger, Heidi Kucera, Alan Conley & Birgit Puschner
Synthesis and metabolism of steroids is highly interconnected within a tissue. The initial objective of these studies was to evaluate the influence of estrogens on the synthesis and metabolism of other steroids in the testis and other tissues. The aromatase inhibitor, letrozole, was used to inhibit testicular estrogen synthesis. Littermates from five different litters (potentially six boars from one litter) provided the testis, prostate, and liver tissues but only four boars (one from each of...

Influence of Relative Humidity on the Heterogeneous Oxidation of Secondary Organic Aerosol

Christopher Cappa, Ziyue Li & Katherine Smith
This dataset contains data from figures and model code used to generate figures in the paper "Influence of Relative Humidity on the Heterogeneous Oxidation of Secondary Organic Aerosol" by Li et al., published in Atmospheric Chemistry and Physics. A description of the work follows below. See read me files for details. Secondary organic aerosol (SOA) is a complex mixture of hundreds of semi‑volatile to extremely low‑volatility organic compounds that are chemically processed in the atmosphere,...

Images of individual strawberries (entire fruit, flesh and calyx) with contrasting background

Adrien Durand-Petiteville, Stavros Vougioukas, David Slaughter & Dennis Sadowski
This database contains images of 258 individual strawberries with dark background (a setting typically encountered during post-harvest operations). For each strawberry, six images are provided: 1) a color image of the entire strawberry; 2) a color image containing only the calyx of the strawberry; 3) a color image containing only the flesh of the strawberry; 4) a binary image of the entire strawberry; 5) a binary image of the calyx, and 6) a binary image...

Groove Loops: A Collection of Repeating Multi-Instrumental Patterns

Petr Janata
This dataset contains 456 musical stimuli used in the series of studies reported in: Janata, P., Peterson, J., Ngan, C., Keum, B., Whiteside, H., & Ran, S. (2018). Psychological and Musical Factors Underlying Engagement with Unfamiliar Music. Music Perception, 36(2), 175-200. doi:10.1525/mp.2018.36.2.175

A Strawberry Database: Geometric Properties, Images and 3D Scans

Adrien Durand-Petiteville, Dennis Sadowski & Stavros Vougioukas
1611 strawberries from different places and varieties are used to collect images, 3D scans as well as physical properties such as shape, width, height, and weight.

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