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Now showing items 111-120 of 161
THE ECOLOGY OF AN INVASIVE TOXIGENIC PROTIST
(2013)
Humans have facilitated a spread of nonnative biota across the Earth. As nonnative species, their interactions with native species, their surrounding community, and their environment are novel, and thereby provide unique ...
Integrating biodiversity and landscape ecosystem processes: tests with freshwater mussels
(2011)
As humans alter the environmental landscape, ecosystems become increasingly imperiled due to habitat alteration and the associated species extinctions and extirpations. Consequently, recent research has often focused on ...
A phenetic assessment of the Ciconiidae (Aves) using skeletal morphology.
(1982)
The stability (measured using matrix correlations) of phenetic classifications based on partitions of continuous morphometric data (skeletal measurements from three groups of birds) was compared for analyses involving two ...
Landscape heterogeneity and the role of corridors in determining the spatial structure of insular mammal populations.
(1998)
Characterizing the influence of landscape features on assessments of isolation is critical to understanding dispersal, and, ultimately, the structure of native communities in fragmented ecosystems. At the same time, a ...
Genetic studies in a demographic framework: Annual variation, inbreeding history, and effects of isolation in a rare group of amphibians.
(2004)
Rana sevosa had significantly lower genetic variation than non-isolated populations of its sister taxa. In fact, the isolated population had an observed heterozygosity that was 72% and allelic richness that was 61% of the ...
Movement by three stream dwelling cyprinids (Notropis boops, Campostoma anomalum, and Cyprinella venusta).
(1999)
The effects of riffles as barriers to movement of stream fish were investigated in large, outdoor artificial streams. Rates of movement of three species of minnows (Cyprinidae) (Campostoma anomalum, Cyprinella venusta and ...
THE ROLE OF DIVERGENT GENITAL MORPHOLOGIES IN REPRODUCTIVE ISOLATION
(2018-05-11)
How a single ancestral species can give rise to new, separate species remains a major outstanding question in evolutionary biology. Understanding speciation requires identifying how reproductive isolation (RI) is initiated ...
INTERACTIONS BETWEEN FRESHWATER MUSSELS, MERCURY CONTAMINATION, AND GLOBAL CLIMATE CHANGE IN FRESHWATER SYSTEMS
(2017)
Humans are impacting the environment at an unprecedented scale, with anthropogenic activities altering environmental processes and cycles planet-wide. Centuries of gold mining and coal burning has more than tripled the ...
Environmental drivers of prairie arthropod community structure
(2020)
Global climate change—including increased temperature, altered precipitation patterns, and nutrient deposition—may reshape plant–arthropod relationships. Arthropods comprise the majority of animal biodiversity on Earth and ...