Of seven species of polychaetous annelids collected from the intertidal zone of Sitakunda coast, Chittagong, Bangladesh, five were new records for the country. The seven are listed, with brief notes on these, some previously recorded! species and others housed in the collections of the Natural History Museum, London. Keys are given to the recorded species of Phyllodocidae, Nereididae, Lumbriner...

this study presents, a comprehensive dataset that documents and provides a new and updated checklist of the freshwater fishes of the poorly known area of iran including makran and mashkid river basins in the east and south eastern iran. the list is based on historical literature records and taxon occurrence data obtained as a result of extensive field expeditions, examination of ichthyological ...

There is an increasing need to examine regional patterns of diversity in coral-reef systems since their biodiversity is declining globally. In this sense, additive partitioning might be useful since it quantifies the contribution of alpha and beta to total diversity across different scales. We applied this approach using an unbalanced design across four hierarchical scales (80 sites, 22 subregi...

BACKGROUND Human activities have diverse and profound impacts on ecosystem carbon cycles. The Piedmont ecoregion in the eastern United States has undergone significant land use and land cover change in the past few decades. The purpose of this study was to use newly available land use and land cover change data to quantify carbon changes within the ecoregion. Land use and land cover change data...

abstract: this study provides a new and updated checklist of the freshwater fishes of the persis region which drains to the persian gulf. the list is based on historical literature records and taxon occurrence data obtained from natural history collections and new fish collections. the confirmed freshwater fishes of the persis region (sub-basin) comprise 44 species in 34 genera, 14 families, 11...

Preparation and mitigation efforts for widespread landslide hazards can be aided by a large-scale, well-labeled inventory with high location accuracy. Recent smallscale studies pixel-wise labeling of potential areas in remotely-sensed images using deep learning (DL) showed but were based on data from very small, homogeneous regions unproven model transferability. In this paper we consider more ...

although the southern caspian sea basin (scsb) fish fauna has been studied for more than 200 years, new species continue to be discovered, reported and renamed. here we take the opportunity to provide a new and updated checklist of the fishes of the southern caspian sea basin. the list is based on historical literature records and taxon occurrence data obtained from natural history collections ...

sets as the basis for visualizing ecoregion maps.1,2 Ecoregions are areas containing similar environmental conditions that are classified for particular purposes. For example, the US Department of Agriculture publishes a map of Plant Hardiness Zones, which divides the US into different ecoregions so that gardeners can select appropriate plants and shrubs for their particular area. The ecoregion...

Research on early warning indicators has generally focused on assessing temporal transitions with limited application of these methods to detecting spatial regimes. Traditional spatial boundary detection procedures that result in ecoregion maps are typically based on ecological potential (i.e. potential vegetation), and often fail to account for ongoing changes due to stressors such as land use...

Increased nutrient loads have resulted in several adverse impacts on surface water quality, including excessive algal growth, fish kills, and drinking water taste and odor issues across the United States and especially in the Ozark ecoregion of northeastern Oklahoma and northwestern Arkansas. The significance of this problem has been highlighted by litigation, with one case even reaching the U....