Open Access. Powered by Scholars. Published by Universities.®
Ecology and Evolutionary Biology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Alca torda (1)
- Brook trout (1)
- Chick diet (1)
- Climate change (1)
- Cortisol (1)
-
- Disturbance (1)
- Diving (1)
- Early-successional habitat (1)
- Foraging behavior (1)
- Growth (1)
- Gulf of Maine (1)
- Heat shock protein (1)
- Nest survival (1)
- Population model (1)
- Razorbill (1)
- Reproductive success (1)
- Seabird (1)
- Setophaga discolor (1)
- Shifting mosaic (1)
- Shrubland birds (1)
- Sink population (1)
- Source-sink dynamics (1)
- Stress (1)
- Temperature-depth recorder (1)
Articles 1 - 3 of 3
Full-Text Articles in Ecology and Evolutionary Biology
Population Dynamics, Chick Diet, And Foraging Behavior Of The Razorbill (Alca Torda) At Matinicus Rock, Maine, Katherine E. Kauffman
Population Dynamics, Chick Diet, And Foraging Behavior Of The Razorbill (Alca Torda) At Matinicus Rock, Maine, Katherine E. Kauffman
Masters Theses 1911 - February 2014
During the summers of 2007-2009, I studied the population growth and reproductive and foraging ecology of the Razorbill (Alca torda) at Matinicus Rock (MR), Maine. This medium-sized marine bird in the family Alcidae (auks) was extirpated from the Gulf of Maine in the late 19th century by hunting, collecting, and colony disturbance. Following legislation protecting seabirds and their nesting habitats, the Razorbill has recolonized probable former nesting habitat in the Gulf of Maine during the past several decades. Six small colonies comprise the Maine population, which is listed as threatened and forms the southern extension of the …
Prairie Warbler Nest-Site Selection, Nest Survival, And Demographic Response To Management In A Pitch Pine-Scrub Oak Barren, Michael E. Akresh
Prairie Warbler Nest-Site Selection, Nest Survival, And Demographic Response To Management In A Pitch Pine-Scrub Oak Barren, Michael E. Akresh
Masters Theses 1911 - February 2014
As shrubland bird populations decline, there is a critical need to understand the effects of habitat management. I studied a population of color-banded prairie warblers (Setophaga discolor) between 2008-2011 in a shifting mosaic landscape within a Massachusetts inland, pitch pine-scrub oak barren consisting of persistent, newly created, succeeding, and disturbed habitats. I present data showing that the abundance and population structure at this site appears to be a function of colonization of newly created habitat by second-year birds, which are likely excluded from mature early-successional habitat by site-faithful older birds. Breeding season fecundity did not differ significantly between …
Temperature Effects On Growth And Stress Physiology Of Brook Trout: Implications For Climate Change Impacts On An Iconic Cold-Water Fish, Joseph G. Chadwick Jr
Temperature Effects On Growth And Stress Physiology Of Brook Trout: Implications For Climate Change Impacts On An Iconic Cold-Water Fish, Joseph G. Chadwick Jr
Masters Theses 1911 - February 2014
Despite the threat of climate change, the physiological mechanisms by which temperature drives the distribution of species are unclear. Here we used chronic temperature exposures to determine that the upper limit for positive growth in the eastern brook trout (Salvelinus fontinalis) is 23.4 °C. Additionally, brook trout exposed to daily temperature oscillations of 8 °C, around a mean of 21 °C, exhibited growth rates that were 43 and 35% lower by length and weight respectively, than in constant 21 °C controls. Limitations in growth were associated with increases in indicators of the physiological stress response. Individuals exposed to …