Esophageal squamous cell carcinoma is a rather common cancer in northern Iran. Incidence of adenocarcinoma of esophagus has an increasing trend in Iran. Co-existence of both cancers in one patient is very rare. We report a middle age woman from northern Iran with a typical presentation of esophageal cancer, who was found to have a dual esophageal cancer. The disease was found in the advanced st...

Citation: Di Filippo A, Pederson N, Baliva M, Brunetti M, Dinella A, Kitamura K, Knapp HD, Schirone B and Piovesan G (2015) The longevity of broadleaf deciduous trees in Northern Hemisphere temperate forests: insights from tree-ring series. Front. Ecol. Evol. 3:46. doi: 10.3389/fevo.2015.00046 The longevity of broadleaf deciduous trees in Northern Hemisphere temperate forests: insights from tre...

for maintaining of zagros forests role in wild life, water and soil conservation, the suitable solutions and methods for assessing the existing conditions and planning for management of this forests should be given. to detection of suitable sampling method to study tree density in the northern zagros forest, blake forest, in baneeh region, kurdistan province, and west of iran was selected. 40 s...

The last experiences showed that spectral data have not sufficient to classify forest types in the mountainous area. In order to clear abilities of spatial models to classify forest types and improve results, an investigation was planned in a case study in the northern forests of Iran by ETM+ data. The spatial models based on aspect, elevation, incorporated aspect-height and homogenous units co...

Coniferous species are present in almost all major vegetation biomes on Earth, though they are the most abundant in the northern hemisphere, where they form the northern tree and forest lines close to the Arctic Circle. Monitoring coniferous forests with satellite and airborne remote sensing is active, due to the forests’ great ecological and economic importance. We review the current understan...

The yellowhead, a forest-dwelling passerine endemic to the South Island of New Zealand, has declined in both abundance and range since the arrival of European settlers last century. In the last 30 years it has all but disappeared from the northern half of the South Island but remains widespread in the south. One possible explanation is that the yellowhead has declined in abundance throughout it...