Mohammad Hasan GeramiGonbad Kavous University | GPNU · Department of Fisheries and Environmental Sciences
Mohammad Hasan Gerami
Researcher in field of Aquatic Ecology
About
47
Publications
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337
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Introduction
Additional affiliations
September 2009 - August 2011
February 2013 - present
Publications
Publications (47)
This study was conducted to investigate the relationship between CPUE variation of sar-dines and anchovy with climate parameters from 1999 to 2017 in the Hormozgan province, Iran. Catch data were obtained from logbook data, chlorophyll-a, and sea surface tempera-ture were collected from the satellite data, wind speed, evaporation, and rainfall data...
پیشگفتار
طي مدت زماني كه از چاپ اين كتاب براي اولين بار در سال 1971مي‌گذرد، تاكنون سه بار مطالب آن تجديدنظر اساسي و چاپ مجدد شده است. اين كتاب براي هدفمند كردن "برنامه زيست‌شناسي بين‌المللي" (IBP) بوده است كه در اين مدت نه‌تنها در زمينه نمونه‌برداري، تفكيك و جداسازي، شناسايي، تجزيه و تحليل داده‌ها و اطلاعات مربوط به مطالعات بستر و اجتماعات بي‌مهرگ...
Variations in the physico-chemical properties of coastal waters through monsoon seasons play a major role in determining the density, diversity and occurrence of phytoplankton in a monsoonal region. This study was conducted to assess the temporal variation of phytoplankton assemblage in Oman Sea which in turn can serve as an ecological health indic...
In the current paper reproductive strategy and growth rates of Luciobarbus esocinus were investigated from 2010 to 2012, in Gamasiab River, Kermanshah, Iran. Samples were collected seasonally by gillnet and electro-fisher device. Sex ratio was evaluated from 162 individuals and the percentage of male and female individuals were 54.76% and 45.24% re...
Forecasting the status of fish landings is a major tool for fisheries managers and policy makers in order to decide on sustainable management issues. In this paper, yearly landings kilka data from 1990 to 2014 were analyzed using time series model. Autoregressive (AR), Moving Average (MA) and Autoregressive Integrated Moving Average (ARIMA) were co...
This study aimed to assess ecological quality status of hard substratum macroinvertebrates communities of the Caspian Sea with three ecological indices and their relationship with environmental factors. For this purpose, benthic communities of the Caspian Sea basin were studied seasonally during 2014 in 8 sampling sites. Temperature, salinity, diss...
Background: To assess the toxicity of environmental pollutants in fish, there are different physiological parameters including histology. This study aimed to investigate the effect of prebiotic dietary supplement on fish immune response after exposure to toxicant.
Methods: The study was conducted in the Gorgan University of Agricultural and Natural...
Spatial and temporal variations in physicochemical
properties of coastal waters play a major role in
determining the density, diversity and occurrence of phytoplankton.
The present study is conducted to assess spatiotemporal
pattern of phytoplankton assemblage in the southern
parts of the Caspian Sea (CS) which in turn can serve as an
ecological he...
Hapsari L, Kennedy J, Lestari DA, Masrum A, Lestarini W.2017. Ethnobotanical survey of bananas (Musaceae) in six districts of East Java, Indonesia. Biodiversitas 18: 160-174. Ethnobotanical survey of bananas was conducted in six districts of East Java, Indonesia i.e. Pasuruan, Probolinggo, Banyuwangi, Lumajang, Jember and Malang during 2012-2015. S...
In the present study, the morphometric differentiation among three populations of Alburnus zagrosensis (Coad, 1) in Zagros mountains basin is analyzed. Fish specimens were sampled from three habitats namely Cheshme Ali, Hamze Ali and Choghakhour wetland in Chaharmahal Va Bakhtiari Province, Iran. ANOSIM (Analysis of Similarity), SIMPER (Similarity...
This study aimed to investigate the disruptive effect of Zinc nanoparticles and Zinc sulfate on the hematological indices of Capoeta capoeta gracilis and comparing the severity of two forms of this metal. For this purpose, 70 species of C. capoeta gracilis with 15 ± 3.5 gr mean weight, were exposed for 14 days to sublethal toxicity of 5, 20 and 200...
از آنجاییکه اکوسیستم شامل مجموعه ای از عوامل زیستی و غیر زیستی است و ارتباط متقابل این عوامل است که مجموعه تغییرات در ابعاد زمانی و مکانی را می‌سازد، در یک مطالعه کامل باید تغییرات هر یک از آن‌ها با درنظر گرفتن سایر عامل یا عوامل موثر بررسی شود. این در شرایطی است که با تغییرات گسترده اکولوژیک در دنیا که ایران نیز از آن دور نیست، هرگونه تصمیمات مدیر...
Temporal variability in macroinvertebrates diversity patterns and their relation with environmental factors. Biodiversitas 17: 36-43. Seasonal changes are the most important factor in temporal variability of macroinvertebrates communities in marine benthic zone. Realizing the pattern of these changes are the key attributes to maintain benthic resou...
Laurencia caspica (red macroalga) Enteromorpha intestinalis and Cladophora glomerata (green macroalgae) are three major macroalgae that grow along the southern coasts of the Caspian Sea. We investigated spatial and temporal variation of these three macroalgal species on hard substrates and their relation with environmental factors in 2014. Sampling...
Aim and Background: Given the importance of the intertidal benthic communities as well as increasing urban and industrial facilities on the coast, this study was carried out to obtain basic information required in the control of the coast, environmental.
Material and Methods: Sampling was conducted in Bandar e Abbas, Bandar e Jask and Bandar e Leng...
Zinc, copper and nickel concentrations in muscle and bone flatfish species Cynoglossus arel were assessed and compared to concentrations of this metal in sediments in the Persian Gulf. Fish were caught by bottom trawl net and a Van veen grab were employed to sample from sediments in 2014. The new Contamination Severity Index (CSI) was employed to a...
This study was conducted to quantify the structure and composition of benthic communities on hard substrates and their relation with environmental factors in Caspian Sea basin in 2014. Sampling was done seasonally from spring to winter 2014 from 5 sites. A total of 9 taxa were recorded. Results showed that Pontogammarus maeoticus and Nereis diversi...
In this study the length–weight relationships (LWRs) for two fish species, Alburnus mossulensis and Luciobarbus esocinus, were analyzed based on seasonal samplings from 2013 and 2014. The specimens were collected by cast- and dip net from the Karun River Basin in the Zagros Mountains, Iran. The b values in the LWRs were determined as 2.9996 for A....
The present preliminary study was undertaken from April to September 2013 in order to assess the limnological factors and phytoplankton communities in three dams, having depth of 6 m and area of 10 ± 2 Hectares, at Node Khanduz (Dam 1), Seyed Abad (Dam 2) and Marzban (Dam 3) in Azad Shahr, Gorgan, Iran. During the study period, a total number of 8...
This study aimed to investigate histopathological, biochemical and behavioral changes of common carp (Cyprinus carpio) exposed to sublethal concentration of Carboxin-Thiram (Vitavax thiram) for one week in static conditions. Live specimens of C. carpio were obtained and exposed to 5, 15 and 30 mg L–1 carboxin-thiram for one week. There was one cont...
Background: Diazinon is an organophosphorous pesticide which widely found in municipal, agricultural, and urban storm water discharges. The present study was conducted to achieve lethal concentration (LC50) and behavioral changes of Rutilus rutilus caspius and Hypophthal-micthys molitrix after exposure to lethal concentration of diazinon.
Methods:...
Macroalgae are considered as primary producers in ecosystem food chain. This study investigated spatial and temporal variation of three species of macroalgae namely, Laurencia caspica (red macroalga) Enteromorpha intestinalis and Cladophora glomerata (green macroalgae) on the hard substrates of the southern Caspian Sea coasts and their relation wit...
The chemical-morphological relationships in rainbow trout, Oncorhynchus mykiss, was assessed through photography in light room. The image data were transferred to a laptop and analyzed by MATLAB (Matrix Laboratory) version R2009a. The designated algorithm of 7 features, including length, height, area, perimeter, equivalent diameter, major and minor...
Pesticides are used in agriculture to control pest and protect human health and animals. Excessive use of pesticides caused risk for human health and threated non-target organisms, polluted water, soil and air. Hinosan is a component of organophosphate pesticide which is used as a fungicide in agricultural fields. In the study, lethal concentration...
The present study was designed to investigate the effects of 0.0125, 0.035, 0.075 and 0.15 ppm sub-lethal concentration of copper on hematological parameters (Hb, HCT, RBC, WBC, MCV, MCH, MCHC, lymphocyte, monocyte, neutrophil and eosinophil count) of the Oncorhynchus mykiss. Samples weighted 18±3 gr and exposure to CuSo44 for a week. Physicochemic...
Increasing efficiency of fishing is one of major goals of fisheries researchers. The aim of this study was to evaluate the efficiency of gillnet with three different colors of green, blue and white, and three different mesh size 3.75, 6 and 10 cm (STR) in Khuzestan waters. Data were recorded from three fishing harbor Arvand, Choobedeh of Abadan and...
Background: Pesticides are widely used in agriculture. Excessive use of pesticides has health risk for human and threatens non-target organisms. This research aimed to determine lethal concentrations of malathion and Hinosan for Carassius auratus (5±1 gr) [mean ± SD].
Methods: Experiments were performed according to O.E.C.D for 4 days (96 h) and co...
Copper is a very common element in water resources. For this reason, concerns about the risks and consequences of this element in water contamination are arising. The purpose of this study was to investigate the effects of water-born CuO (Copper (II) oxide) on the rainbow trout, Oncorhynchus mykiss gill tissue to establish a suitable biomarker for...
Herbicides are used to control weeds and are usually targeted to processes and target sites that are specific to plants. Butachlor is an herbicide of the acetanilide class, which is used widely in agricultural fields. At the present study, lethal concentration (LC 50) of butachlor was calculated for Rutilus frisii Kutum. Samples weighted 4 ± 1 [mea...
Objective(s): This study aimed to determine the possible toxicity of Cuo nanoparticles (NPs) on Oncorhynchus mykiss by evaluating hematological parameters. Materials and Methods: Fish were sampled and treated in 4 aquariums containing the concentration ranges of 1, 5, 20 and 100 ppm of CuO NPs. There was one control group (no CuO NPs) and three rep...
One of the most important methods for evaluating changes in an ecosystems is studying the biodiversity changes. This study sought to examine the changes of biodiversity in two different fishing grounds of the Persian Gulf. For this purpose, two fishing grounds were selected, Abumusa, Tonb and Siri as subarea 1, and Kish westward as subarea 2. The c...
Nanotechnology as a modern science is rapidly expanding which can influx many biological aspects due to large extent. For this reason, concerns about the risks and consequences of this technology are rising in environment and especially in water resources. The purpose of this study is to investigate the effect of water-born Cuo Nanoparticles on Onc...
Length–weight relationships have been determined for two species, Mastacembelus mastacembelus and Glyptothorax silviae. Samples were taken in 2011 from the Cholvar River in western Iran. It is believed that the size range covered is close to a commonly known size range of each species. The length–weight relationship values of b were determined as 2...
This study aimed to investigate the spawning season, length at first maturity (LM50) and sex ratio of Metapenaeus affinis in the shrimp fishing grounds of Hormozgan Province, west of the Persian Gulf, Iran. Samples were taken by the swept area method and trawl net with 2 cm mesh size in the cod end from January 2010 to February 2011. Results showed...
This study was conducted to achieve Length-Weight relationship of Carasobarbus luteus in
Cholvar River, Khuzestan Province, Iran. Some 85 specimens were measured. Analyses of length and
weight showed that there was a high correlation between length and weight for this species. LW
relationship for this species was calculated as TW= 3E-06TL3.226,...
The Islamic Republic Iran is located in western Asia with area 1 648 000 km and have a 2700 km of
2
continentalcoastline. Due to this continental coastline, Iran is considered the biggest fishing nation in the
region. There are several commercials fishing methods in Iran like Trawl fisheries, Purse seine fisheries, Gillnet
fisheriesand coastline fi...
This study conducted to achieve Length-Length and Length-Weight relationships and Condition
Factor of Garra rufa in Cholvar River in Iran. 535 Samples were collected during June 2011 to August
2011 by beach seine with 5-milimeter mesh size. Length-weight relationship was W = 5E-06TL for males,
3.225 W = 6E-06TL for females and W = 5E-06TL for both...
Monthly sampling data of Metapenaeus affinis was analyzed to determine the age, growth and mortality rates form January 2010 to February 2011. The asymptotic total Carapace length was estimated to be 35mm for males and 47mm for females. The growth parameter K was calculated 1.1 Y -1 for females and 1.2 Y -1 for males while C. The total mortality ra...
Questions
Questions (18)
Dear researchers
I have time series heavy metal concentration data in fish mussel, surrounding water and sediment. What kind of analysis do you suggest for modelling relation between heavy metals concentration in fish mussel, surrounding water and sediment? Is it possible to forecast heavy metals concentration in other fish species based on model results?
any advice and suggestions will be greatly appreciated.
Dear Researchers
I am trying to plot sample-size-based and coverage-based rarefaction and extrapolation sampling curves for phytoplankton species richness in 2 different sites to compare their diversity. But I am a little confused about application of the curve. Is there any simple manual or tutorial in this case?
Thanks in advance
Greetings
I sampled form Macroalgae in a coastal area and I have to matrix of data. One is Macroalgae amino acid content and another is environmental data such as temperature, salinity, pH, nitrate, phosphate and etc. Now I am looking for the best statistical method to describe the relationship between these tow matrix. What method is the best one? Is it CCA/RDA, or simple correlation?
Thanks in advance
Hi
I am studying on freshwater shrimp growth and need to know about C and WP. How we can calculate these tow factor? Is there any package in R for calculation? Or can we estimate them in FISAT?
Thanks in advance
Dear researchers
I am trying to model fish movement by Fishmove Package in R. There is a formula that works in this package and has tow main factor. One is mobile component of of a fish population and the second is stationary part. I know that mobile component is the part of population that migrates through river of other aquatic sources, such as estuaries of seas ( If I was right). My problem is that I can not find out what is the stationary part? It is well known that fish move and swim in it's habitat. So How it could be stable? Anyone has a clue?
Thanks in advance for your help.
Dear all
I am trying to find best model for variogram modelling. How I can play with coefficients in variogram code in gstat package? anyone has a clue?
