Variability of fish assemblage structure in the East Hammar marsh, southern Iraq

Mohamed, Abdul-Razak M.; Al-Saboonchi, Azhar A.; Raad, Fadia

doi:10.4197/mar.25-2.8

Cited by 4 publications

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“…The abundance of marine species led to an increase in richness, evenness and diversity indices and created seasonal fluctuation in relative abundance and total number of individuals. This was comparable to the previous studies on the East Hammar marsh Mohamed et al, 2009Mohamed et al, , 2014, but the values of indices were higher in the present study. McErlean et al (1973) considered a wide range of richness index as an indicator of the nursery function of an area.…”

Section: Discussionsupporting

confidence: 92%

“…The ecological status of the marsh was found to be fair (F-IBI= 47.7) and was slightly better than the status of the marsh after 2-4 years of restoration activities, F -IBI= 42.6-44.5 (Mohamed and Hussain, 2012a;Al-Shamary, 2008) and Chybaish marsh, F-IBI= 45.6 (Mohamed, 2014). The reasons for this simple improvement, despite the low number of native species and the high number of exotic species recorded, was attributed to the high value of richness index, high proportions of marine and carnivores species, in addition to a decrease in the proportions of C. auratus, P. abu and detrivores species in the fish assemblage.…”

Section: Discussionmentioning

confidence: 93%

“…Several studies have been focus on describe water quality and the fish assemblages in the southern marshes since inundation in 2003 (ARID, 2006;Hussain et al, 2009;Mohamed et al, 2008Mohamed et al, , 2012Mohamed et al, , 2014. Some works have been carried out attempting to evaluate water quality change as result of environmental alteration in the marshes by using Water Quality Index, WQI or water characteristics (Al-Saboonchi et al, 2011;Al-Kenzawi et al, 2011) or fish structure changes in the marshes by applying the Index of Biotic Integrity, IBI (Al-Shamary, 2008;Mohamed and Hussain 2012a;Mohamed 2014a, b).…”

Section: Introductionmentioning

confidence: 99%

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Ecological assessment of East Hammar marsh, Iraq using a number of ecological guides

Abdul-Razak¹

2017

JKAU Mar Sci

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The ecological status of the East Hammar marsh was evaluated by using a number of ecological guides: water quality index (WQI), Carlson trophic state index (TSI) and fish integrated biological index (F-IBI) during the period from November 2012 to October 2013. The results revealed that the annual value of WQI varied from 51.1 (marginal) for historical data before desiccation to 67.8 (fair) for data after inundation. The marsh was evaluated to be mesotrophic (TSI= 42.0). IBI scores were calculated from 16 separate assemblage metrics based on the fish species richness, species composition and trophic guilds. The ecological status of the marsh was found to be fair (F-IBI= 47.7) and was slightly better than the status of the marsh after 2-4 years of restoration activities. The rather low improvement in the situation of the marsh indicates that the environment is still fragile and requires the allocation of water share from the Tigris and Euphrates rivers to restore marsh normality.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Ecological assessment of East Hammar marsh, Iraq using a number of ecological guides

Abdul-Razak¹

2017

JKAU Mar Sci

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“…The individuals of A. arabicus inhabit the Iraqi marine waters, and their juveniles enter the rivers and marshes of southern Iraq for feeding and locally known as "Shank". The species constituted 1.7% of fish assemblage in Garmat Ali River [7] , 0.6% of fish assemblage in the East Hammar marsh [8] , 4.2% of fish assemblage in the Shatt Al-Arab River [9] and 2.2% of fish structure in the south part of Main Outfall Drain, Basrah, Iraq [10] . There are a few studies have been done on the population dynamics of A. arabicus in some waters using ELEFAN or FiSAT II software such as Morgan [11] Lee and Al-Baz [12] and Mathews and Samuel [13] in Kuwait waters, Arabian Gulf; Resen et al [14] in Iraqi waters, Arabian Gulf; Vahabnezhad et al [15] in Iranian waters, Arabian Gulf, and Mustafa et al [16] in the Sundarbans Ecosystem of Bangladesh.…”

Section: Introductionmentioning

confidence: 99%

Population dynamics of Arabian yellowfin seabream, Acanthopagrus arabicus Iwatsuki, 2013 from Iraqi marine waters, Arabian Gulf

Mohamed¹,

Al-Hassani²

2021

Int. J. Fish. Aquat. Stud.

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In this study, the population dynamics of the Arabian yellow fin sea bream, Acanthopagrus arabicus in the Iraqi marine waters, Arabian Gulf were assessed, to contributing towards the development of management plans for its sustainable exploitation. A. arabicus is one of the species caught in large quantities as commercial by artisanal fishers. Fish samples were collected by the Shaheen steel-hulled dhow and from the artisanal fishermen from February 2020 to January 2021. The length-weight relationship was described as W = 0.030L 2.867 , indicating a negative allometric growth pattern. Of 3484 individuals ranging in total length from 13.0 to 41.0 cm were used to evaluate the growth and mortality parameters. The asymptotic length (L∞), growth rate (K) and growth performance index (Ø') were 44.6 cm, 0.34 and 2.830, respectively. The total mortality (Z) was calculated as 1.17, while the natural and fishing mortality rates were 0.75 and 0.42, respectively, and the current exploitation rate (Epresent) was 0.36. Length at first capture (L50) was 21.9 cm. The recruitment pattern occurs throughout the year, with two recruitment peaks. The yield per recruit analysis indicates that the current exploitation rate was below the economic yield target and the maximum sustainable yield, indicating that this stock underexploited. Virtual population analysis results showed that the mid-lengths (16-22 cm) experienced the highest fishing mortality. So, for management purposes, more yields could be obtained by increasing the fishing activities on this species for a substantial harvest.

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Comparative Taxonomy of Two Species of Acanthopagrus Peters, 1855 (Pisces: Sparidae) with the First Record of A. sheim Iwatsuki, 2013 from Iraq

Ali

Adday

Khamees

2019

Basrah J. Agric. Sci.

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Morphometric and meristic characteristics of two species of genus Acanthopagrus (A. arabicus and A. sheim) were described based on 19 specimens of A. arabicus and 10 specimens of A. sheim. Distinguished morphometric characteristics between two species are included; obvious black streak on anal fin in fresh specimens and the black spots on the membrane between spines of dorsal fin found in A. sheim only, while yellow lower lobe of caudal fin in A. arabicus in compared with black or dusky once in A. sheim. Pectoral, pelvic and anal fins being vivid yellow (yellow in A. sheim, anal fin with black streaks), caudal fin being yellow in the lower part, while grayish on the upper part of A. arabicus. The biometric characters of 33 out of 42 morphometric characters of A. arabicus were larger than that of A. sheim, which reported for the first time in Iraqi waters

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Variability of fish assemblage structure in the East Hammar marsh, southern Iraq

Cited by 4 publications

References 0 publications

Ecological assessment of East Hammar marsh, Iraq using a number of ecological guides

Ecological assessment of East Hammar marsh, Iraq using a number of ecological guides

Population dynamics of Arabian yellowfin seabream, Acanthopagrus arabicus Iwatsuki, 2013 from Iraqi marine waters, Arabian Gulf

Comparative Taxonomy of Two Species of Acanthopagrus Peters, 1855 (Pisces: Sparidae) with the First Record of A. sheim Iwatsuki, 2013 from Iraq

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