in the environment is by monitoring animal populations over long periods. Over the past five years, for example, Robert G. Mayer has documented 126 bird species at the Arnold Arboretum, including 46 confirmed breeders and another five probable breeders. Using data from several earlier studies, Mayer was able to document the absence of at least 27 species that had once bred successfully at the A...

Comparative functional genomics studies the evolution of biological processes by analyzing functional data, such as gene expression profiles, across species. A major challenge is to compare profiles collected in a complex phylogeny. Here, we present Arboretum, a novel scalable computational algorithm that integrates expression data from multiple species with species and gene phylogenies to infe...

The western pond turtle Emys (formerly Clemmys) marmorata is declining throughout its range, primarily due to loss of habitat via urbanization and conversion to agriculture. Urban waterways present several important challenges to freshwater turtle populations, but they also present an opportunity to maintain declining species in a ubiquitous habitat that has high public visibility. The arboretu...

this study was carried out in order to investigate on chromosomal behavior during meiosis in herbaceum (iranian endemic), arboretum species, f1 hybrids of two species and bc4 genotypes. the endemic varieties used in this study were semnan and shahreza (herbaceum) and vtdl as arboretum cultivar. f1s investigations showed that in the adjacent and alternative quadrivalents frequently but the bc4 o...

ciation with the institution, he was interested in botany and in horticulture, his first appointment at Harvard University bemg as Director of the Botanic Garden in Cambrtdge. On assuming the directorship of the Arnold Arboretum in 1873, he already appreciated the tremendous value of collections of living plants as a means of promoting public interest in horticulture. His desire for study and f...

Managing tree health in urban environments is complicated due to the disconnect that exists between novel environmental conditions created by urbanization and those under which species evolved. Soils influence growth, but optimal nutrient pH recommendations are often informed agricultural horticultural norms do not typically include for forest species. At Arnold Arboretum Boston, Massachusetts,...

Tree location and tree attributes are valuable elements of municipal tree management systems. By creating the tree data in Geographic Information System, users have access to other digital data that can be used in conjunction with tree database. A study was conducted at the Universiti Putra Malaysia's arboretum with an objective to establish a computerized information system for Universiti Putr...

Karst hills, that is, jagged topography created by dissolution of limestone and other soluble rocks, are distributed extensively in tropical forest regions, including southern parts of China. They are characterized by a sharp mosaic of water and nutrient availability, from exposed hilltops with poor soil development to valleys with occasional flooding, to which trees show species-specific distr...

While surveying the diversity of fungi of the order Mucorales, two isolates, EML-PUKI12-1 and EML-PUKI06-1, were obtained from the gut of soldier fly larvae inhabiting the bulrush at a pond located in the Chonnam National University Arboretum, Gwangju, Korea. The isolates were confirmed as Mucor irregularis and Mucor fragilis species, respectively, based on the morphological characteristics and...

Rhododendron arboreum is an evergreen shrub or small tree with a showy display of bright red flowers. Rhododendron is the national flower of Nepal and is known as (Laligurans) & the state tree of Uttarakhand. It is called ‘Burans, Bras, Buras or Barahkephool’ in local dialect. Rhododendron arboreum is a wild plant species possesses high ecological importance and the flower of the species having...