During the taxonomic revision of the Turkish Dianthus species, specimens collected from Bilecik, Seben (Bolu), and Nallıhan (Ankara) were discovered that represent a new species. Its description, images, chorology, ecology, and threat category are provided. It was compared with a closely related species, Dianthuszonatus, and differences are based on its general morphology and seed micromorphology.

Dianthus caryophyllus L. is an important floricultural crop species throughout the world, specially in Eurasia. The present study was conducted to evaluate the nine Dianthus genotypes, including normal and mutagen treated, to assess the magnitude of variability and to pick up the heritable component of variation present in the quantitative traits. The analysis of variance revealed highly signif...

Title of Document: EPIFAUNAL DISTURBANCE BY PERIODIC LOW DISSOLVED OXYGEN: NATIVE VERSUS INVASIVE SPECIES RESPONSE Elizabeth Bromley Jewett, Doctor of Philosophy, 2005 Directed By: Professor Kenneth Sebens, Department of Biology Dr. Anson Hines, Smithsonian Environmental Research Center Invasive species and low dissolved oxygen (DO) threaten the biodiversity and ecosystem health of estuaries wo...

Hypoxia is increasing in marine and estuarine systems worldwide, primarily due to anthropogenic causes. Periodic hypoxia represents a pulse disturbance, with the potential to restructure estuarine biotic communities. We chose the shallow, epifaunal community in the lower Chesapeake Bay, Virginia, USA, to test the hypothesis that low dissolved oxygen (DO) (<4 mg l–1) affects community dynamics b...

the vase life of cut flowers and foliage is often shortened by vascular occlusions that constrict vase solution supply. reduction in stem conductivity is typically caused by blockage of cut stem ends and xylem conduits by microbes, physiological plugging, and disruption of water columns in xylem vessels by cavitations and air emboli. cut flower and foliage longevity can be greatly affected by t...