: 1 (1)

Open Access Article

1 - Native fish species in inland water resources of Iran capable of introduction to ornamental fish industry
M. Ramin M. Doostdar

This paper used the results of a research project entitled biodiversity of inland water fishes of Iran which was carried out from 2005 to 2010. Some 3500 fish specimens were obtained from different basins of Iran by using electrofishing method, cast net, gill net and ho More

This paper used the results of a research project entitled biodiversity of inland water fishes of Iran which was carried out from 2005 to 2010. Some 3500 fish specimens were obtained from different basins of Iran by using electrofishing method, cast net, gill net and hook. Using criteria such as size, shape and color, some of them are considered suitable to keep in aquarium. Due to the results 25 species from 11 Genera belong to 4 families Cyprinidae, Cyprinodontidae, Cobitidae and Nemacheilidae are regarded suitable to be introduced as aquarium fishes. Manuscript profile

Open Access Article

2 - Comparison of municipal solid waste disposal scenarios in Bahregan Oil district in terms of greenhouse gas emission
M. Kashefi Alasl R. Marandi A.R. Afrasiabi

This paper used the results of a research project entitled biodiversity of inland water fishes of Iran which was carried out from 2005 to 2010. Some 3500 fish specimens were obtained from different basins of Iran by using electrofishing method, cast net, gill net and ho More

This paper used the results of a research project entitled biodiversity of inland water fishes of Iran which was carried out from 2005 to 2010. Some 3500 fish specimens were obtained from different basins of Iran by using electrofishing method, cast net, gill net and hook. Using criteria such as size, shape and color, some of them are considered suitable to keep in aquarium. Due to the results 25 species from 11 Genera belong to 4 families Cyprinidae, Cyprinodontidae, Cobitidae and Nemacheilidae are regarded suitable to be introduced as aquarium fishes. Manuscript profile

Open Access Article

3 - Changes in Chlorophyll a concentration in coral Porites compressa in The Nay of Band Bay
M. Bolouki Kourandeh S.M.B. Nabavi

Chlorophyll a concentration as one of the zooxanthellae's photosynthesis pigments shows coral's health. To determine the chlorophyll a concentration in Porites compressa in Persian Gulf two locations in North and South of Nay Band Bay was chosen. Sampling was conducte More

Chlorophyll a concentration as one of the zooxanthellae's photosynthesis pigments shows coral's health. To determine the chlorophyll a concentration in Porites compressa in Persian Gulf two locations in North and South of Nay Band Bay was chosen. Sampling was conducted by underwater scuba diving in February, May and August in 2008 which the highest mean concentration of chlorophyll a was 0.828±0.043 μg/cm2 in south of Nay Band Bay in cold season and the lowest mean concentration of chlorophyll a was 0.604±0.048 μg/cm2 in north of Nay Band Bay in warm season that have significant differences (P<0.05). The objective of this study was to determine the chlorophyll a concentration in Porites compressa to estimate coral reefs health of Nay Band Bay, finally it was found that Corals in North of Nay Band Bay, which are closer to the petrochemical pollution sources, showed more signs of degradation in comparison of the corals in south of Nay Band Bay which are farther away from these industries. Manuscript profile

Open Access Article

4 - BOD Dispersion Modeling in Minab Reservoir
M. Saghafi K. Keyhan M. Mahdavi

The multi-purpose Minab Dam reservoir has been studied in this article. 8 scenarios determined for 2 kinds of pollutants, Conservative & Decay. Where the pollutants in two points, one near the dam axis (or the first scenario, S1) and another at the inlet reservoir ( More

The multi-purpose Minab Dam reservoir has been studied in this article. 8 scenarios determined for 2 kinds of pollutants, Conservative & Decay. Where the pollutants in two points, one near the dam axis (or the first scenario, S1) and another at the inlet reservoir (the second scenario, S2) will be discharged, in both wet time (2005) and drought (2007) has defined and implemented.In these studies, acronyms are: wet and drought, respectively, with signs of W and D, respectively, with symptoms of Decay & Conservative Mass, D and C.Comparison of two scenarios D.C.S1 and W.C.S1 shows that distribution of pollutant in the first hours, while almost 120 hours after the entry of pollutants is similar to the dispersion of pollutants in the environment is wet most of the time of drought.In scenarios W.C.S2 and D.C.S2, the only difference is dispersion time in the first hours; the surface is occupied by the same pollutants.Theonly difference is about approximately 5 to 10 days after entry of pollutants into the environment. In this way the wet dispersion of pollutants is increasing, while at the same time, drought in the initial distribution rate of diffusion remains.Scenarios can be seen that the amount of pollutants in D.D.S1 and W.D.S1, decay mass is reduced during dispersion.Similar conclusionsof W.D.S2 and D.D.S2 were also as same as two other scenarios W.D.S1 and D.D.S1 shows.This study shows that dispersion of pollutants inthe aqueous environment is affected by two parameter: 1) Nature of pollutants being dispersed in (Conservative or Decay), 2)The time, wet and drought. Manuscript profile

Open Access Article

5 - Environmental Risk Assessment of Shafarood Dam by using Multi-Attribute Decision Making Method
S. Rezaian S.A. Jozi N. Moradi majd

Shafarood Dam is located at 27 km from the Hashtpar city of Guilan Province. In order to identify the environmental hazards caused by the construction of the dam measured and compared was with standards pollutions of surface water and groundwater and the air. To this, f More

Shafarood Dam is located at 27 km from the Hashtpar city of Guilan Province. In order to identify the environmental hazards caused by the construction of the dam measured and compared was with standards pollutions of surface water and groundwater and the air. To this, following identification of tasks and the environment of the study area with respect to the intensity, probability and possible consequences of those effects on the human, environment and equipment by using Topsis Fuzzy and AHP methods; identification and categorization of risks were performed under Delphi methods. To more, risk factors were categorized under natural, biophysical and human events. Scientific methods applied in this study are TOPSIS and AHP, which constitute MADM method. Then, to prioritize risk factors based on their importance, Analytic Hierarchy Process (AHP) method was used by way of entering values to Expert Choice Software. In the TOPSIS method; excavation and backfilling, drilling explosion works were given weights of 3.771, 2.981 and 2.851 respectively and were ranked from first to third. In AHP method; excavation and backfilling were given a final weight of 0.897 with the first priority, whereas the drilling and explosion were given final weights of 0.677 and 0.694 with the second and third priority.The more presented strategies to control and reduce identified risks. Keep moist levee and produce less dust during unloading times, Minimum soil translocation in season rainfall and prevent the movement of soil material at least on loan from the main river bed and corrective measures are introduced. Manuscript profile

Open Access Article

6 - Comparison survey of growth and survival rate of White leg shrimp in monoculture and polyculture system with Mullet in Gowatr earth pond- Chabahar, Iran
S.H. Hosseini Aghozbeni M. Hafezieh A. Ajdehakoshpour M.R. Azini

This investigation was conducted to survey the growth and survival rate, weight average, FCR, and harvestable white leg shrimp biomass during 107 days culture in mono and poly culture earth pond system with mullet fish. Nine 600 m2 earth ponds  were prepared and st More

This investigation was conducted to survey the growth and survival rate, weight average, FCR, and harvestable white leg shrimp biomass during 107 days culture in mono and poly culture earth pond system with mullet fish. Nine 600 m2 earth ponds  were prepared and stocked with 20 shrimp post larvae in each pond (mean weight 0.007 ±0.001 g) for three treatments (each with three replication). After 40 days, the mullet fish fingerlings collected from the Oman Sea (with mean weight 35 g) released to earth ponds with a density of zero (T1 as control), 2 (T2), 4 (T2) per 100m2. During the culture period, water temperature, dissolved oxygen, pH and salinity were measured. One way ANOVA results showed that there were significant differences between growth rate, shrimp biomass, FCR and abiotic parameters (P<0.05), but not for survival rate (P>0.05). The highest shrimp biomass was harvested from T3 (with 212 kg and a mean weight of 18.4 g individual shrimp) and the lowest (with 187 kg with a mean weight of 16.23 g individual shrimp) was from T1. However, there were no statistically significant difference in survivorship between treatments, but the highest survival percentage was observed in T3 (95.96%) and the lowest in T2 (94.5%). Duncan's test in FCR average showed no significance difference between T1 (the lowest FCR, 1.2 ±0.1) and T2 (P>0.05), but there was a significant difference between these two treatments and T3 (the highest FCR, 1.27 ±0.2) (P<0.05). The conclusion expressed that polyculture of white leg shrimp and mullet fingerlings in earth pond not only performed more shrimp production compare to mono shrimp culture system.    Manuscript profile

Open Access Article

7 - Statistical and synoptical analyses of fog event in Rasht International Airport
F. Arkian T. Saberi H. Ardakani M. T. Zamanian

To better understand of fog events in the Rasht Airport, to improve the forecast accuracy, some statistical and synoptical analyses studied by 800m and less horizontal visibility during years 2000-2009. In this research, some parameters such as horizontal visibility, te More

To better understand of fog events in the Rasht Airport, to improve the forecast accuracy, some statistical and synoptical analyses studied by 800m and less horizontal visibility during years 2000-2009. In this research, some parameters such as horizontal visibility, temperature, dew point deficit, relative moisture and winds speed on onset hour and in the duration of the event have been analyzed. Frequency percent of fog events was calculated for all month during 2000-2009. Frequency of occurrence increases in the colder months especially in February is about 24.64 .The occurrence frequency of long duration fog events  that begin between  1800 UTC to 2100 UTC hour  is more than 2100 UTC to 0300 UTC hour; and the most fog events terminate  nearby sunrise. The horizontal visibility at the onset time was lower (100m) for long duration fog events. In the most events, dew point deficit and relative humidity at the fog onset time were calculated zero and 80% respectively. Low wind speeds (0-0.2 ms-1) have long been known to favor fog development. Studied on Synoptic fog eventsshows that the most important  patterns in long duration fog events development are blocking pattern, Col region  and  inversion in cold season.  Manuscript profile

Open Access Article

8 - Idenification and abundance of bivalvia in coasts of Boushehr Province (Deylam,Bushehr, Dayer and Kangan) in spring and summer
M. Velayatzadeh H. Mahab M. Hoseini

This study was done in order to idenification and survey of bivalvia diversity in coasts fromBushehr province (Persian Gulf), 2009.The sampling were collected four stationsfromDeylam, Bushehr, Dayer and Kangan (of mangrove’s coast) with three replicate in spring a More

This study was done in order to idenification and survey of bivalvia diversity in coasts fromBushehr province (Persian Gulf), 2009.The sampling were collected four stationsfromDeylam, Bushehr, Dayer and Kangan (of mangrove’s coast) with three replicate in spring and summer seasons.Sampling was done by quadrate 625 cm2 and than samples were identified. Samples according to distribution at different depths were compared. For assessed diversity and dominance species of the bivalvia was used of two index like Shanon and Sympson.In fact were identified seven speices and three genus of bivalvia. The number of bivalve idenification in spring 2973±64.72and in summer 1584±51.31 samples in cm2 fromthe study area. The highest of bivalvia abundance were 2008±42.28, 1792±35, 521±11.25 and 236±7.12 samples in cm2 from Dayer, Deylam, Kangan and Bushehr (P<0.05). The number of identified bivalves were significantly different between the four stations (P<0.05). The highest of Shanon index was realized spring in Kangan with H=1.917 and the lowest their summer in Bushehr with H=0.517. The highest of Sympson index was summer in Bushehrwith λ=0.665 and the lowest their summer in Kangan with λ=0.201. InDeylam station was order to identification 3 species that the highest diversity Tellinawallaceae1341±38.95 samples in cm2. In Bushehrstation was order to identification 2 species that abundance in summer 80±3.96 samples in cm2 than more lower spring with 156±8.89 samples in cm2. In this study abundance of bivalvia lower with increasing of temperature in summer. In bivalvia have abundance in spring than more summer.In four stations Idenificated of Tellinawallaceae. Manuscript profile

XML

List of Articles