To understand parent-hybrid dynamics in cinquefoil (Potentilla) species in the Colorado Rocky Mountains, I am estimating environmental overlap among parents and hybrids, interbreeding among parents and hybrids, and hybrid population growth in multiple natural populations at NWT and (not included her

Data set to accompany the paper " Extensive regional variation in the phenology of insects and their response to temperature across North America" published in Ecology (2023) See below for a full list of authors and addresses. Authors are also listed in the main data file, "Malaise_trap_Data_2019-20

Data set to accompany the paper " Extensive regional variation in the phenology of insects and their response to temperature across North America" published in Ecology (2023) See below for a full list of authors and addresses. Authors are also listed in the main data file, "Malaise_trap_Data_2019-20

The slow-fast continuum is known to structure variation in life-history strategies across species. Within populations, it is also assumed to structure individual life histories, yet evidence of its existence remains unclear. We formally assessed the presence of a slow-fast continuum of life historie

Abstract Many species produce individually specific vocalizations and sociality is a hypothesized driver of such individuality. Previous studies of how social variation influenced individuality focused on colonial or non-colonial avian species, and how social group size influenced individuality in s

“The Rocky Mountain region has fascinated me ever since I traveled to Glacier and Yellowstone National Parks as a teenager, and saw for the first time such wonderful birds as ospreys, American dippers, and Lew­is’s woodpeckers.” This book is in part based on the author’s earlier Birds of the Rocky M

The Quaternary period has been characterized by global climate and environmental

A trophic cascade is an ecological process in which predators affect the producer biomass and community composition of an ecosystem by limiting plant consumption by herbivores. Predators not only control herbivore populations through predation, but their mere presence can affect herbivore behavior.

Scientists at the Rocky Mountain Biological Laboratory (RMBL) have recorded more mule deer (Odocoileus hemionus) activity density within the Gothic town site relative to outside the town site. One hypothesis to account for increased deer activity in Gothic is that coyotes, who prey on deer fawns, av

Changes in species distributions across elevations can be responses to anthropogenic climate disruption. Movement of species to higher elevations can result in local extirpations and colonization that could escalate and critically endanger native species. Studying systems that have experienced histo

Individuality is defined as the characteristics that determine the differences from one individual in species from another individual of the same species. Many animals use acoustic signals to communicate. These signals send messages about territorial defense, mate attraction and kin-ship. The abilit

Individuals may obtain valuable information about the presence of predators by eavesdropping on heterospecific alarm signals. While playback studies have demonstrated that similarly-sized and taxonomically-related species may respond to the calls of each other, less work has been done to define the

Abstract Song repertoire size is the number of distinct syllables, phrases, or song types produced by an individual or population. Repertoire size estimation is particularly difficult for species that produce highly variable songs and those that produce many song types. Estimating repertoire size is

In harem-polygynous societies, body condition is often correlated with dominance rank. However, the consequences of dominance are less clear. High-ranking males do not inevitably have the highest reproductive success, especially in systems where females mate with multiple males. In such societies, w

Many species produce individually specific vocalizations and sociality is a hypothesized driver of individuality. Previous studies of social variation focused on species that were colonial nesters or not, and social group size in sciurid rodents. If sociality is an important driver of individuality,

Ellen Pedersen. 2009.