Background The larval stages of Gasterophilus are obligate parasites in the gastrointestinal tract of equine accountable for pathologic ulcers in the Persian onager gastrointestinal. The aim of the current report was to study the histopathological change with G. pecorum larvae in the esophagus of a Persian onager. Methods This study was performed in Iranian Zebra propagation and breeding site...

Kampung Dalam Bugis is an area in Pontianak City located the Kapuas River and Landak branch. This a kampung settlement that marked establishment of City. Village on bank river, impacting flood disaster vulnerability. Therefore, it necessary to study correlation between physical characteristics house level socio-economic aims analyze houses vulnerability at riverbanks. The analysis used assess s...

s: 30–31.Richter, B.D., Mendelson, M.A. & Master, L.L. (1997a). Threats to imperiled freshwater fauna.Conservation Biology, 11: 1081–1093. Richter, B.D, Baumgartner, J.V., Wigington, R. & Braun, D.P. (1997b). How much water doesa river need? Freshwater Biology, 37: 231–249.Riley, A.L. (1998). Restoring Streams in Cities: a Guide for Planners, Policymakers, and Citizens. Washingt...

The lost Ems, a participatory project in the border region. Since 2017, GIA and NLD have conducted joint research into fossil branch of river Ems between Landegge (Ldkr. Emsland) Sellingen (prov. Groningen), where this merged with Runde system as Ruiten Aa/Westerwoldsche Aa. As its flanking dunes were intensively exploited by farming communities up to middle/late Iron Age, string settlements be...

Abstract Taking the sand mining project in a local river section lower reaches of Yangtze River, as an example, this paper investigates complex effects on potential. Based MIKE21 software to establish two-dimensional water–sand mathematical model section, study change potential near after implementation different schemes through numerical simulation explore influence The results show that (1) e...

Salinity is the relative concentration of salts in water. In a city of southern China, the local water supply company pumps water from a nearby river for potable use. During the winter dry season, the intrusion of sea water raises the salinity of the river to a high level and affects approximately the daily life of 450,000 residents of the city. This paper reports the application of constraint ...

In a field investigation of the role played by shade and direct illumination on the distribution of stream fauna (Hughes, in press), two species of mayfly nymph, Baetis harrisoni Barnard and Trieorythus discolor (Burro.), were found predominantly in reaches exposed to sunlight and reaches shaded by dense vegetation respectively. The results for Baetis harrisoni bear out the conclusions reached ...

The ancient Malili lake system on the Indonesian island Sulawesi hosts a large species flock of the viviparous freshwater gastropod Tylomelania. Molecular and morphological data have previously shown that this species flock resulted from three independent lake colonizations and subsequent adaptive radiations. In a recent taxonomic revision of these radiations 25 species have been recognized. He...

We investigate the erosive growth of channels in a thin subsurface sedimentary layer driven by hydrodynamic drag toward understanding subterranean networks and their relation to river networks charged by ground water. Building on a model based on experimental observations of fluid-driven evolution of bed porosity, we focus on the characteristics of the channel growth and their bifurcations in a...