Jeremy L. Siemers

• Colorado State University

Bats play crucial ecological roles and provide valuable ecosystem services, yet many populations face serious threats from various ecological disturbances. The North American Bat Monitoring Program (NABat) aims to use its technology infrastructure to assess status and trends of bat populations, while developing innovative and community‐driven conse...

White‐nose syndrome (WNS) has caused the death of millions of bats, but the impacts have been more difficult to identify in western North America. Understanding how WNS, or other threats, impacts western bats may require monitoring other roosts, such as maternity roosts and night roosts, where bats aggregate in large numbers. Little brown bats (Myo...

Bats swarm when individuals aggregate, typically at caves or mines during autumn, and together repeatedly circle, dive, chase, and land (Fenton 1969). Swarming behavior could serve multiple social purposes including mating and orientation of young bats for migration or with potential hibernacula (Veith et al. 2004). Breeding during autumn swarming...

Collaborative monitoring over broad scales and levels of ecological organization can inform conservation efforts necessary to address the contemporary biodiversity crisis. An important challenge to collaborative monitoring is motivating local engagement with enough buy-in from stakeholders while providing adequate top-down direction for scientific...

The North American Bat Monitoring Program (NABat) is a multi-national, multi-agency coordinated monitoring program designed to assess the status and trends of North American bats at local, state, and range-wide scales. NABat monitoring efforts focus on the 47 species of bats shared by Canada, the United States, and Mexico. NABat is composed of a ne...

Conservation of roosts is regularly recommended as a strategy to decrease the risk of threats to local bat populations (e.g., white-nose syndrome). Determining whether a roost site plays a meaningful role in maintaining a local bat population can be difficult given the variability found in roost structure type, and use by season, duration, and sex....

The Colorado Natural Heritage Program conducted climate change vulnerability assessments of plant and animal species, and terrestrial and freshwater ecosystems (“targets”) within a time frame of mid-21st century. Our assessments 1) evaluate the potential impact of future climate conditions on both species and ecosystems by identifying the degree of...

Male pallid bats (Antrozous pallidus) from the Purgatoire River Valley of northern Las Animas County, Colorado, were fitted with telemeters and followed to 53 day roosts. A majority of roosts were in cliffs (89%), with fewer in free-standing rocks at the base of cliffs. Temperatures at roosts were moderate (27°C) but warmer than ambient temperature...

We recorded and analyzed the songs of 23 male House Finches (Carpodacus mexicanus) at six sites in Sioux County in far northwestern Iowa. We compiled a catalogue of all the syllables detected in the population and examined the extent of syllable sharing and song sharing among individuals both within sites and between sites. Unlike in a population o...

Registramos la colección de 4 especimenes que extiende la distribución de la musaraña chica (Cryptotis parva) en Colorado. Las 2 áreas de colección están a aproximadamente 240 km y 290 km de los especimenes previamente colectados y documentados en la cuenca del río Cimarron en el sureste de Colorado y aproximadamente 300 km de los que fueron docume...

Las estimaciones de abundancia por lo general sirven para evaluar la calidad ambiental silvestre. Sin embargo, las discrepancias entre los parámetros de abundancia y de adecuación causan que se cuestione la utilidad del de abundancia para predecir la calidad ambiental. Utilizamos las tazas de supervivencia y la captura de roedores para evaluar la c...