The influence of salinity on the cuticular permeability of Cenocorixa bifida hungerfordi Lansbury (Hemiptera: Corixidae)

1981 ◽  
Vol 59 (8) ◽  
pp. 1505-1509 ◽  
Author(s):  
S. G. Cannings
Keyword(s):  
Saline Lakes ◽  
Saline Water ◽  
Surface Conductivity ◽  
Ion Regulation ◽  
Low Salinity ◽  
Low Salinity Water ◽  
Wide Range ◽  
Cuticular Permeability ◽  
Salinity Water ◽  
Over Time

The cuticular permeabilities of individual Cenocorixa bifida hungerfordi Lansbury collected over a wide range of salinities were determined. Corixids from low salinity water (0–2000 μmhos∙cm−1 surface conductivity at 25 °C) exhibited low cuticular permeability, whereas those from moderately saline water bodies (7000 – 11 000 μmhos∙cm−1) were much more permeable. However, at higher salinities cuticular permeability was again low; corixids from a lake with a surface conductivity of 16 000 μmhos∙cm−1 (approximately half that of seawater) had cuticular permeabilities comparable with those of corixids from freshwater lakes. This phenomenon was shown to be acclimatory, since permeability decreased over time when corixids from moderately saline lakes were placed into distilled water. The biological reasons for these results are not clear, but it appears that cuticular permeability of C. bifida increases as problems of ion regulation diminish, and then begins to decrease, seemingly at the salinity at which it becomes difficult for the corixid to maintain a constant haemolymph osmotic pressure. The biological implications of this phenomenon are discussed.

scholarly journals Enhanced Wettability Modification and CO2 Solubility Effect by Carbonated Low Salinity Water Injection in Carbonate Reservoirs

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Ji Ho Lee ◽  
Kun Sang Lee
Keyword(s):  
Oil Recovery ◽  
Saline Water ◽  
Water Injection ◽  
Carbonate Reservoirs ◽  
Viscosity Reduction ◽  
Low Salinity ◽  
Low Salinity Water ◽  
Geochemical Reactions ◽  
Salinity Water ◽  
Low Salinity Water Injection

Carbonated water injection (CWI) induces oil swelling and viscosity reduction. Another advantage of this technique is that CO2 can be stored via solubility trapping. The CO2 solubility of brine is a key factor that determines the extent of these effects. The solubility is sensitive to pressure, temperature, and salinity. The salting-out phenomenon makes low saline brine a favorable condition for solubilizing CO2 into brine, thus enabling the brine to deliver more CO2 into reservoirs. In addition, low saline water injection (LSWI) can modify wettability and enhance oil recovery in carbonate reservoirs. The high CO2 solubility potential and wettability modification effect motivate the deployment of hybrid carbonated low salinity water injection (CLSWI). Reliable evaluation should consider geochemical reactions, which determine CO2 solubility and wettability modification, in brine/oil/rock systems. In this study, CLSWI was modeled with geochemical reactions, and oil production and CO2 storage were evaluated. In core and pilot systems, CLSWI increased oil recovery by up to 9% and 15%, respectively, and CO2 storage until oil recovery by up to 24% and 45%, respectively, compared to CWI. The CLSWI also improved injectivity by up to 31% in a pilot system. This study demonstrates that CLSWI is a promising water-based hybrid EOR (enhanced oil recovery).

Effect of exposure to low salinity water on plasma ion regulation and survival rates in artificially wounded devil stinger Inimicus japonicus

2018 ◽  
Vol 84 (3) ◽  
pp. 477-484 ◽  
Author(s):  
Osamu Kawaguchi ◽  
Anise Midooka ◽  
Yuji Iwamoto ◽  
Takaya Kudoh ◽  
Yoshisuke Iida ◽  
...  
Keyword(s):  
Survival Rates ◽  
Ion Regulation ◽  
Low Salinity ◽  
Low Salinity Water ◽  
Inimicus Japonicus ◽  
Salinity Water

scholarly journals Effect of exposure to low salinity water on plasma ion regulation and survival rates in artificially wounded devil stinger Inimicus japonicus

2019 ◽  
Vol 85 (4) ◽  
pp. 378-378
Author(s):  
OSAMU KAWAGUCHI ◽  
ANISE MIDOOKA ◽  
YUJI IWAMOTO ◽  
TAKAYA KUDOH ◽  
YOSHISUKE IIDA ◽  
...  
Keyword(s):  
Survival Rates ◽  
Ion Regulation ◽  
Low Salinity ◽  
Low Salinity Water ◽  
Inimicus Japonicus ◽  
Salinity Water

scholarly journals POTASSIUM DOES NOT ATTENUATE SALT STRESS IN YELLOW PASSION FRUIT UNDER IRRIGATION MANAGEMENT STRATEGIES

2020 ◽  
Vol 33 (4) ◽  
pp. 1082-1091
Author(s):  
GEOVANI SOARES DE LIMA ◽  
JAILSON BATISTA DA SILVA ◽  
FRANCISCO WESLEY ALVES PINHEIRO ◽  
LAURIANE ALMEIDA DOS ANJOS SOARES ◽  
HANS RAJ GHEYI
Keyword(s):  
Saline Water ◽  
Irrigation Management ◽  
Management Strategies ◽  
Passion Fruit ◽  
High Salinity Water ◽  
Low Salinity ◽  
Low Salinity Water ◽  
Fruiting Stage ◽  
Salinity Water ◽  
Yellow Passion Fruit

ABSTRACT The objective of this study was to evaluate the gas exchange, growth and production of yellow passion fruit cv. BRS GA1, as a function of irrigation management strategies with saline water and potassium doses. The experiment was conducted under field conditions in São Domingos, PB, Brazil. A randomized block design was used in a 6 * 2 factorial scheme. The treatments consisted of six strategies of irrigation with saline waters (irrigation with low-salinity water throughout the crop cycle - SE; irrigation with high-salinity water in the vegetative stage - VE; flowering stage - FL; fruiting stage - FR; in the successive vegetative/flowering stages - VE/FL; vegetative/fruiting stages - VE/FR) and two doses of potassium (100 and 130% of the K2O recommendation), with four replicates and four plants per plot. The 100% dose corresponded to 60 g of K 2O plant-1 year-1. The effects of using high-salinity water (3.2 dS m-1) alternated with low-salinity water (1.3 dS m-1) were evaluated in different stages of the cultivation cycle. Irrigation with saline water in the fruiting stage promoted an increase in intercellular CO2 concentration and decrease in CO2 assimilation, with effects of non-stomatal origin standing out as limiting factors of photosynthetic efficiency. The highest CO 2 assimilation rate in plants subjected to water salinity of 1.3 dS m-1 throughout the cycle resulted in increments in the number of fruits and in the production per plant of the passion fruit cv. BRS GA1.

Single-Well Chemical-Tracer Modeling of Low-Salinity-Water Injection in Carbonates

2017 ◽  
Vol 20 (01) ◽  
pp. 118-133 ◽  
Author(s):  
Emad W. Al-Shalabi ◽  
Haishan Luo ◽  
Mojdeh Delshad ◽  
Kamy Sepehrnoori
Keyword(s):  
Water Injection ◽  
Low Salinity ◽  
Chemical Tracer ◽  
Low Salinity Water ◽  
Single Well ◽  
Salinity Water ◽  
Low Salinity Water Injection
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