Search
Now showing items 41-50 of 161
New records of Early, Medial, and Late Cretaceous lizards and the evolution of the Cretaceous lizard fauna of North America.
(2000)
The record of Mesozoic lizards has, for many years, consisted of records of primitive lizards from the Late Jurassic and derived lizards from the Late Cretaceous. The intervening time period has almost no record of lizards, ...
Demographic and behavioral characteristics of wintering sparrow populations in a South Carolina salt marsh
(2023-12-15)
Throughout the world, coastal communities both human and natural face the existential threat of rapidly rising seawater levels resulting from global climate change. Since 2012, my collaborators and I have been monitoring ...
Ontogeny of fear: Influence of corticosterone.
(2005)
A strong attachment to the caregiver is critical for survival in altricial species, including humans. While some behavioral aspects of attachment have been characterized, its neurobiology has only recently received attention. ...
Phylogenetic and proximate mechanisms affect darter (Percidae: Etheostomatinae) community structure
(2015-05)
Understanding the relative influences of biotic and abiotic mechanisms responsible for generating patterns of community diversity remains a fundamental theme in ecology. Although studies have recovered patterns of community ...
Environmental constraints regulating the distribution and abundance of small mammals.
(1999)
I computed 15 landscape variables at four different scales (40 variables total). Cluster analysis of these weighted data produced three multispecies clusters based on associations of species distributions and abundances ...
Why are there so many birds in the tropics: using comparative approaches to investigate the confluence of landscape, ecology, and genome in the generation of Neotropical avian diversity
(2022-12-16)
The Neotropics are home to an astonishing level of avian diversity, and thus naturally a focus for the study of the generation of biodiversity. Studies of tropical speciation often focus on large-scale landscape changes, ...
Feeding ecology of juvenile turtles (Chrysemys) under experimental conditions /
(1984)
A foraging model that predicts the net energy intake for juvenile turtles feeding on a range of Callibaetis nymph sizes is also examined. Those nymph sizes that miximize the net energy intake in the model are considered ...
THE WORLD BELOW: HOW RESOURCES AND HABITAT INFLUENCE INSECT COMMUNITIES ACROSS SPACE AND THROUGH TIME
(2019-05-10)
Insects are one of the most abundant, diverse, and ecologically important clades of organisms. They represent up to 5-10 million species, accounting for approximately 46% of the animal biomass on Earth. Yet, despite the ...
Karyotypic, morphologic, and genic differentiation of hybridizing ground squirrels (Spermophilus mexicanus and Spermophilus tridecemlineatus).
(1982)
Levels of fluctuating asymmetry were measured to try to assess the fitness of the hybrids relative to the parentals. Hybrid asymmetry was greater than that of S. mexicanus but tended to be less than the levels of asymmetry ...
An integrative ecological and evolutionary genomic study of lake Daphnia across time
(2023-05-12)
An undisputable fact of the modern age is that human activities are now a major force shaping the biosphere. Some have called for a new geological epoch called the “Anthropocene” or the age of humans— the search is underway ...