A Further Study of the Home Life of the Brown Thrasher

During the summer of 1911, the writer made a detailed study of the nesting habits of the Brown Thrasher which covered a considerable part of the nesting period. The report of this study was published in the Wilson Bulletin. During the summer of 1912 the writer made one full day\u27s observations on a nest of the same species under somewhat different circumstances, such that some additional conclusions are reached regarding the nestling food

Wildlife and Multiple-Use Forestry

THE FACT that a forestry organization is interested in the subject of wildlife management and multiple-use forestry is testimony, if any were needed, to the advanced thinking that has developed since the time when forest and forestry management were widely regarded as important solely for the production of saw logs. It is indicative of dearer understanding of the basic interrelationships that exist in managing natural resources

Wildlife: Past and Present

In assessing the wildlife situation, particularly in the eastern United States, my mind inevitably goes back to conditions that existed between 1910 and l915 when I first became interested in wildlife matters. At that time, there was no professional wildlife management, and the administration of the wildlife resources was almost entirely in the hands of politicians who used wildlife funds and positions for politica1 patronage purposes. Few states employed career men, and the U. S. Biological Survey was a small research agency with an appropriation of a few thousand dollars a year

A List of the Birds Found in Marshall County, Iowa

During a three years\u27 residence at Marshalltown, Marshall County, Iowa, ending September 15, 1915, the writer spent most of his spare time in a study of the avifauna of the region. Nearly all parts of the county were visited, the area within which most of the work was done being indicated on the accompanying map

A List of the Birds Observed in Clay and O\u27Brien Counties, Iowa

Clay and O\u27Brien counties lie in a section of Iowa which have received little attention from ornithologists. O’Brien is the more westerly; it is the second from the western boundary of the state, with Clay County adjoining it on the east; and each lies within one county of the Minnesota state line

Notes on the Mammals Observed in Marshall County, Iowa

Few specific locality records for mammals in central Iowa have ever been published. The following brief notes, therefore, have been prepared for the purpose of making available for future workers on Iowan mammalogy the information I am able to give. This list is not complete but comprises only such notes and specimens as came to my hands in one way or another during three years\u27 residence

The Birds of Marshall County, Iowa, II

The continuation of a survey of the birds of Marshall County, Iowa

An all silicon quantum computer

A solid-state implementation of a quantum computer composed entirely of silicon is proposed. Qubits are Si-29 nuclear spins arranged as chains in a Si-28 (spin-0) matrix with Larmor frequencies separated by a large magnetic field gradient. No impurity dopants or electrical contacts are needed. Initialization is accomplished by optical pumping, algorithmic cooling, and pseudo-pure state techniques. Magnetic resonance force microscopy is used for readout. This proposal takes advantage of many of the successful aspects of solution NMR quantum computation, including ensemble measurement, RF control, and long decoherence times, but it allows for more qubits and improved initialization.Comment: ReVTeX 4, 5 pages, 2 figure

Molecular Assisted Identification Reveals Hidden Red Algae Diversity from the Burica Peninsula, Pacific Panama

The marine flora of Panama harbors a rich diversity of green, red and brown algae,and despite chronic understudy, it is reported as the second most diverse marine flora along thePacific Central American coast, with 174 macroalgal species. Extensive new collections and molecularassisted identification (MAI) by an international team of researchers has revealed an even greaterdiversity for this country. Here, the intertidal and shallow subtidal marine flora of the remoteBurica Peninsula is introduced. This area is characterized by an uplifted extensive intertidal flatcomposed of firm, sedimentary benthos known as mudrock, on which abundant algal communitiesthrive, even during extended periods of exposure. A collection of nearly 200 brown, green and redmacroalgae specimens representing the first marine floristic inventory of this region was made inJanuary 2011, and results of analyses of 45 foliose red algae specimens are presented. DNA sequencedata for several loci (rbcL-3P; COI-5P; UPA) have been generated for molecular assisted identificationand to guide morphological assessments. Twenty-six species were identified among the specimensincluding 21 new Pacific Panama records, as well as previously unrealized transisthmian distributions,and two new species, Neorubra parvolacertoides sp. nov. and Grateloupia irregularis sp. novNational Science Foundation/[0743334]/NSF/Estados UnidosUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Ciencias del Mar y Limnología (CIMAR)UCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Biologí