1. While fish-based Indices of Biotic Integrity have been developed for a wide array of lotic systems, equivalent tools have seldom been adapted to the monitoring and assessment of lakes. Major difficulties arise in such work: (i) collecting data that allow statistically robust analyses, (ii) choosing the relevant variables to describe the biotic, environmental and anthropogenic data sets and (...

1 Arthropod natural enemies provide valuable pest suppression in agricultural landscapes. Natural enemy abundance and diversity within a given crop, in turn, have frequently been shown to be positively related to the amount of semi-natural habitat in the landscape. However, other aspects of landscape structure may also influence natural enemy communities and may be more amenable to management. ...

Introduction: In the current study, we compared h5-index provided by Google Scholar (GS), impact factor (IF) provided by web of sciences (WOS), and SCImago journal rank indicator (SJR) provided by SCOPUS for quality assessment of nuclear medicine journals. Methods: 2013 h5-index, 2012 IF, and 2011 SJR of nuclear medicine journals were extracted from their publishers namely GS, WOS, and SCOPUS....

An edge metric is a metric on the interior of a manifold-with-boundary which is singular at the boundary in a manner described by a given fibration of the boundary. The related edge differential operators arise in many settings and have been the subject of much research; see, for example, [Ma]. Our interest in edge metrics arises from the observation that they are a robust class of metrics natu...

gel sefid village is in mashayekh village in central part of ardal city of chahar mahal and bakhtiari province. in the research, quickbird satellite image in google earth software was used to introduce the landscape of this village and to recognize the whole human uses and natural spots in the study area. then the resulting map was transferred to arcgis 3.1 software and the area land use map wa...