نتایج جستجو برای: turbidity current

تعداد نتایج: 783110  

Journal: :Diversity 2021

Increasing evidence suggests that coral reefs exposed to elevated turbidity may be more resilient climate change impacts and serve as an important conservation hotspot. However, logistical difficulties in studying turbid environments have led poor representation of these reef types within the scientific literature, with studies using different methods definitions characterize reefs. Here we rev...

2017
Boglárka Somogyi Károly Pálffy Katalin V-Balogh Zoltán Botta-Dukát Lajos Vörös

Autotrophic picoplankton (APP) abundance and contribution to phytoplankton biomass was studied in Hungarian shallow lakes to test the effect of inorganic turbidity determining the size distribution of the phytoplankton. The studied lakes displayed wide turbidity (TSS: 4-2250 mg l-1) and phytoplankton biomass (chlorophyll a: 1-460 μg l-1) range, as well as APP abundance (0 and 100 million cells ...

Journal: :The Journal of Cell Biology 1966
Donald F. Hoelzl Wallach Virendra B. Kamat Mitchell H. Gail

Specific turbidities, densities, and refractive indices of fragments of plasma membrane (PM) and endoplasmic reticulum (ER) from Ehrlich ascites carcinoma have been measured. A spherical shell model of specified dimensions and refractive index was established for PM fragments. The ionic composition of the dispersion medium was varied systematically. Increases in Gamma/2 caused increases in the ...

2015
Javier Manjarrez Eric Rivas-González Crystian S. Venegas-Barrera Alejandro Moyaho Dennis M. Higgs

Semi-aquatic snakes integrate visual and chemical stimuli, and prey detection and capture success are therefore linked to the display of visual predatory behavior. The snake Thamnophis melanogaster responds preferentially to individuals of the fish Xenotoca variata with a greater number of bright, colorful spots (lateral speckles) compared with those with a smaller number; however, water turbid...

2015
Jerry R. Miller Jacob T. Sinclair

Water quality data collected between 2007 and 2014 within the Allen Creek Watershed were used to: (1) determine the factors controlling the temporal variations in turbidity and suspended sediment concentration (SSC) within a representative, high-gradient headwater basin in the Southern Appalachians; and (2) assess the recovery of water quality following extensive logging operations during the e...

Journal: :The Journal of experimental biology 2008
Tamir Strod Ido Izhaki Zeev Arad Gadi Katzir

The scattering and absorption of light by water molecules and by suspended and dissolved matter (turbidity) degrade image transmission and, thus, underwater perception. We tested the effects on visual detection of prey size and distance (affecting apparent prey size) and of low-level water turbidity in hand-reared great cormorants (Phalacrocorax carbo sinensis) diving for natural prey (fish) in...

Journal: :Journal of food protection 2012
Alejandro Tomás-Callejas Gabriela López-Velasco Angela M Valadez Adrian Sbodio Francisco Artés-Hernández Michelle D Danyluk Trevor V Suslow

Standard postharvest unit operations that rely on copious water contact, such as fruit unloading and washing, approach the criteria for a true critical control point in fresh tomato production. Performance data for approved sanitizers that reflect commercial systems are needed to set standards for audit compliance. This study was conducted to evaluate the efficacy of chlorine dioxide (ClO(2)) ...

2009
MARK W. CARTER DANIEL E. SHOUP JOHN M. DETTMERS DAVID H. WAHL

—Environmental factors such as turbidity and habitat complexity affect many aspects of aquatic food webs, including predator–prey interactions. We examined the effects of turbidity (0, 5, 10, 20, 40 nephelometric turbidity units [NTU]) and cover (presence or absence) on prey selection by adult smallmouth bass Micropterus dolomieu (mean 6 SD 1⁄4 290 6 41 mm total length) in laboratory pools. Ind...

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