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Barn savers
A boy spends a long day helping his father dismantle a nineteenth-century barn so that the pieces can be used in other barns and houses to live another one hundred years.
Book
The hundred-year barn
\"One hundred years ago, a little boy watched his family and community come together to build a grand red barn. This barn become his refuge and home--a place to play with friends and farm animals alike. As seasons passed, the barn weathered many storms. The boy left and returned a young man, to help on the farm and to care for the barn again. The barn has stood for one hundred years, and it will stand for a hundred more: a symbol of peace, stability, caring and community\"-- Provided by publisher.
Book
Disability and Mothering
The editors survey the theoretical frameworks of feminism and disability studies, locating the points of overlap crucial to a study of disability and mothering. Organized in five sections, the book engages questions about reproductive technologies; diagnoses and cultural scripts; the ability to rewrite narratives of mothering and disability; political activism; and the tensions formed by the overlapping identities of race, class, nation, and disability. The essays speak to a broad audience—from undergraduate and graduate students in women’s studies and disability studies, to therapeutic and health care professionals, to anyone grappling with issues such as genetic testing and counseling, raising a child with disability, or being disabled and contemplating starting a family.
eBook
Environmental conditions during early life accelerate the rate of senescence in a short-lived passerine bird
Environmental conditions experienced in early life may shape subsequent phenotypic traits including life history. We investigated how predation risk caused by domestic cats (
Felis silvestris catus
) and local breeding density affected patterns of reproductive and survival senescence in Barn Swallows (
Hirundo rustica
) breeding semicolonially in Denmark. We recorded the abundance of cats and the number of breeding pairs at 39 breeding sites during 24 years and related these to age-specific survival rate and reproductive senescence to test predictions of the life history theory of senescence. We found evidence for actuarial senescence for the first time in this species. Survival rate increased until reaching a plateau in midlife and then decreased later. We also found that survival rate was higher for males than females. Local breeding density or predation risk did not affect survival as predicted by theory. Barn Swallows with short lives did not invest more in reproduction in early life, inconsistent with expectations for trade-offs between reproduction and survival as theory suggests. However, we found that the rate of reproductive decline during senescence was steeper for individuals exposed to intense competition, and predation pressure accelerated the rate of reproductive senescence, but only in sites with many breeding pairs. These latter results are in accordance with one of the predictions suggested by the life history theory of aging. These results emphasize the importance of considering intraspecific competition and interspecific interactions such as predation when analyzing reproductive and actuarial senescence.
Journal Article
Miriam's secret
\"In this middle-grade novel, Miriam discovers a young girl hiding in the barn while she's spending Passover at her grandparents' farm.\"-- Provided by publisher.
Book
The Mitogenome Relationships and Phylogeography of Barn Swallows (Hirundo rustica)
The barn swallow (Hirundo rustica) poses a number of fascinating scientific questions, including the taxonomic status of postulated subspecies. Here, we obtained and assessed the sequence variation of 411 complete mitogenomes, mainly from the European H. r. rustica, but other subspecies as well. In almost every case, we observed subspecies-specific haplogroups, which we employed together with estimated radiation times to postulate a model for the geographical and temporal worldwide spread of the species. The female barn swallow carrying the Hirundo rustica ancestral mitogenome left Africa (or its vicinity) around 280 thousand years ago (kya), and her descendants expanded first into Eurasia and then, at least 51 kya, into the Americas, from where a relatively recent (<20 kya) back migration to Asia took place. The exception to the haplogroup subspecies specificity is represented by the sedentary Levantine H. r. transitiva that extensively shares haplogroup A with the migratory European H. r. rustica and, to a lesser extent, haplogroup B with the Egyptian H. r. savignii. Our data indicate that rustica and transitiva most likely derive from a sedentary Levantine population source that split at the end of the Younger Dryas (YD) (11.7 kya). Since then, however, transitiva received genetic inputs from and admixed with both the closely related rustica and the adjacent savignii. Demographic analyses confirm this species’ strong link with climate fluctuations and human activities making it an excellent indicator for monitoring and assessing the impact of current global changes on wildlife.
Journal Article