This study aimed to distinguish the contribution of stream fragmentation and poor habitat water quality decline in riverine fish species. The species presence was related number barriers between a specific lowland section main river length remaining two barriers. To investigate relationship absence ecological quality, EQR velocity indices were compared accessible sites where either present or a...

[1] The tropical oceans are a source of reactive bromine to the atmosphere in the form of short-lived brominated methanes as bromoform (CHBr3) and dibromomethane (CH2Br2). Elevated atmospheric concentrations above the tropical oceans are related to oceanic supersaturations of the compounds and especially to upwelling regimes. Although the sources of these brominated gases in the open ocean are ...

The occurrence of Campylobacter spp was examined in a variety of waters in Northern Ireland. Conventional cultural techniques were employed with 768 water specimens, including drinking waters (tap, spring, bore hole and bottled) and recreational waters (swimming pool, lough, river and sea). Positive waters included 1/11 (9.1%) drinking water from untreated well water, as well as 5/12 (41.7%) un...

Ammonia oxidation is the first step in nitrification and was thought to be performed solely by specialized bacteria. The discovery of ammonia-oxidizing archaea (AOA) changed this view. We examined the large scale and spatio-temporal occurrence, abundance and role of AOA throughout Chinese inland waters (n = 28). Molecular survey showed that AOA was ubiquitous in inland waters. The existence of ...

Abstract With increasing sealing of the catchment surface, time outflow water from decreases and volume surface flowing out increases. This phenomenon has a negative impact on balance area, results in an increase frequency flooding, related to inability existing drainage systems collect waters. paper presents modeling hydraulic conditions selected part storm sewage system. The US EPA’s software...

Abstract During polar nights of 2012 and 2017, bioluminescence (BL) potential surveys demonstrated high emissions at depths around below 100 m offshore stations to the north a Svalbard fjord (Rijpfjorden). We that highest bioluminescent for are located modelled/ambient light intensities corresponding reported irradiance thresholds behavioral sensitivity krill copepods, suggest is one reasons va...

Water salinity in the San Joaquin Valley is a function of depth, location, and stratigraphy. This paper presents a reconnaissance study of water salinity within Kern County, California, using chemical analyses from oil field produced water and water wells as well as geophysical logs. Log analysis indicates that the base of underground sources of drinking water (USDWs) (<10,000 mg/L) slopes from...