Albion College

About: Albion College is a education organization based out in Albion, Michigan, United States. It is known for research contribution in the topics: Population & Higher education. The organization has 485 authors who have published 754 publications receiving 20907 citations.

Interference Competition from House Wrens as a Factor in the Decline of Bewick’s Wrens

Abstract: Widespread declines in breeding populations of migratory songbirds have been attributed to the destruction of breeding habitat, destruction of overwintering habitat, interspecific brood parasitism by cowbirds, and increased rates of predation on nests (Wilcove 1985; Terborgh 1989; Askins et al. 1990; papers in Hagan & Johnson 1992). Evidence for interspecific competition as a cause of decline is negligible (Terborgh 1989), although competition has been suspected as the cause of decline in Bewick's Wren (Thryomanes bewickii [Audubon]) (Wilcove 1990). Bewick's Wren, a songbird once found across much of the U.S., is on the Blue List (species of concern) of the National Audubon Society (Ehrlich et al. 1992), and Breeding Bird Surveys show declines in Bewick's Wrens from 1966 to 1991 in several parts of the country. Declines have been most notable in the migratory, eastemmost subspecies, the Appalachian Bewick's Wren (T. b. altus). The Appalachian Bewick's Wren once bred from eastern Kentucky, eastern Ohio, and Pennsylvania, south to Alabama and Georgia, and it was considered common or abundant in most of that region (Bent 1948). Over the past century the Appalachian Bewick's Wren has almost disappeared; during the 1980s only 20 pairs of Bewick's Wrens were found in Maryland, Virginia, and West Virginia combined (Maryland Natural Heritage Program 1989). In 1986 the Maryland Natural Heritage Program petitioned the U.S. Fish and Wildlife Service (UJSFWS) to list the Appalachian population of Bewick's Wren as endangered (Bartgis 1986). The USFWS accepted the petition (Maryland Natural Heritage Program 1989) but ranked the Appalachian population of Bewick's Wren

Parenting styles and academic achievement in college students

Abstract: The purpose of this study was to investigate the relationship between parenting styles and college academic achievement. An ethnically diverse group of college students reported their GPA and responded to the Parenting Style Index. Parenting style scores were unrelated to college GPA. Additional analyses of ethnic groups indicated differences in maternal involvement and strictness and relationship of these variables to GPA.

An integrated approach to understanding Apollo 16 impact glasses: Chemistry, isotopes, and shape

Abstract: The major- and minor-element abundances were determined by electron microprobe in 1039 glasses from regoliths and regolith breccias to define the compositional topology of lunar glasses at the Apollo 16 landing site in the central highlands of the Moon. While impact glasses with chemical compositions similar to local materials (i.e., Apollo 16 rocks and regoliths) are abundant, glasses with exotic compositions (i.e., transported from other areas of the Moon) account for up to ~30% of the population. A higher proportion of compositionally exotic, angular glass fragments exists when compared to compositionally exotic glass spherules. Ratios of non-volatile lithophile elements (i.e., Al, Ti, Mg) have been used to constrain the original source materials of the impact glasses. This approach is immune to the effects of open-system losses of volatile elements (e.g., Si, Na, K). Four impact glasses from one compositionally exotic group (low-Mg high-K Fra Mauro; lmHKFM) were selected for 40Ar/39Ar dating. The individual fragments of lmHKFM glass all yielded ages of ~3750 ± 50 Ma for the time of the impact event. Based on the petrography of these individual glasses, we conclude that the likely age of the impact event that formed these 4 glasses, as well as the possible time of their ballistic arrival at the Apollo 16 site from a large and distant cratering event (perhaps in the Procellarum KREEP terrain) (Zeigler et al. 2004), is 3730 ± 40 Ma, close to the accepted age for Imbrium.

Partial migration of the nurse shark, Ginglymostoma cirratum (Bonnaterre), from the Dry Tortugas Islands

Abstract: Nurse sharks have not previously been known to migrate. Nurse sharks of the Dry Tortugas (DRTO) mating population have a highly predictable periodic residency cycle, returning to the Dry Tortugas Courtship and Mating Ground (DTCMG) annually (males) or bi- to triennially (females) during the June/July mating season. For 23 years we have followed the movements of 76 recaptured adults of a total of 115 tagged adults. Telemetry detections of 40 females tagged with acoustic transmitters show that most tagged and presumably post-partum females are continuously present in the DRTO in the fall, winter and early spring following the June mating season but these females depart in late March to early May. Detections reveal these females avoid the DTCMG completely during the next mating season, returning from late summer to fall. Telemetry records of nine of 17 adult males that co-habited with these females in the DTCMG depart DRTO waters every July. Both sexes may overwinter in the DRTO. Between 2011 and 2016 three males and five females with transmitters were detected to move up the west coast of Florida outside of the mating season as far north as the waters off Tampa Bay (335 km). Six others were only detected in the lower Florida Keys (292 km). Nine sharks returned to DRTO; one returned six times. Some overwintered and some resumed courtship in June, demonstrating both resident and migratory contingents within their population, partial migration and an ability to navigate with high spatial and temporal precision.