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بررسی حضور میکروپلاستیک‌ها در آب و رسوب ساحل اکوسیستم مانگرو قشم (مطالعة جنگل مانگروی طبل) | ||
| نشریه محیط زیست طبیعی | ||
| دوره 76، ویژه نامه مناطق تحت حفاظت، بهمن 1402، صفحه 57-65 اصل مقاله (737.54 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jne.2023.356873.2538 | ||
| نویسندگان | ||
| کیادخت رضایی1؛ آرش جوانشیرخویی1؛ ام البنین بذرافشان* 2 | ||
| 1گروه شیلات، دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران. | ||
| 2گروه مهندسی منابع طبیعی، دانشکده کشاورزی و مهندسی منابع طبیعی، دانشگاه هرمزگان، بندرعباس، ایران. | ||
| چکیده | ||
| افزایش روزافزون تولید و مصرف پلاستیک در جهان، موجب بروز مشکلات محیط‌زیستى شده است. بنابراین پایش میکروپلاستیک‌ها در اکوسیستم‌های طبیعی، ضروری است. در ناحیة بین جزر و مدی ساحل جنگل مانگروی قشم، سه ایستگاه انتخاب و از آب و رسوب در سه تکرار نمونه‌برداری شد. رسوبات در دمای 50 C° به‌مدت 72 ساعت در آون قرار داده شدند سپس از الک با مش 7 میلی‌متر گذرانده شدند. سپس نمونه‌های رسوب و آب، ابتدا با محلول اشباع NaCl و بعد با محلول اشباع NaI مخلوط شدند. بخش رویی محلول‌های نمکی، با استفاده از کاغذ صافی واتمن (Cat No. 1442) فیلتر و کاغذ صافی در دمای C° 60 به‌مدت 12 ساعت در آون قرار داده شد. در نهایت فیلترها توسط استریوسکوپ مورد بررسی قرار گرفتند. بیش‌ترین وکم‌ترین میانگین تعداد میکروپلاستیک در رسوبات، به‌ترتیب در ایستگاه 1 با 19/14±54/67 و در ایستگاه 3 با 3/06±9/67 ذره بر کیلوگرم رسوب خشک مشاهده شد. همچنین میانگین تعداد میکروپلاستیک‌ها در آب در ایستگاه 1 با 17/6±33/51 بیش‌ترین و در ایستگاه 3 با 1/53±33/3 ذره بر لیتر کم‌ترین مقدار را داشت. بین حضور مقدارمیکروپلاستیک‌ها درآب و رسوبات همبستگی (0/96=R2) مشاهده شد. تشابه بر اساس میزان حضور میکروپلاستیک در آب و رسوب، در ایستگاه‌های 2 و 3 مشاهده شد (0/95=ρ). به‌طور کلی می‌توان بیان نمود، تعداد میکروپلاستیک در مناطقی که فعالیت و حضور انسانی بیشتر است، درآب و رسوب بیشتر بود. | ||
| کلیدواژه‌ها | ||
| خلیج فارس؛ رسوب؛ مانگرو؛ میکروپلاستیک | ||
| عنوان مقاله [English] | ||
| Investigating the presence of microplastics in the water and sediment of Qeshm mangrove ecosystem beach (Case study of Tabl mangrove forest) | ||
| نویسندگان [English] | ||
| Kiadokht Rezaei1؛ Arash Javanshir1؛ Ommolbanin Bazrafshan2 | ||
| 1Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran. | ||
| 2Department of Natural Resources Engineering, Faculty of Agriculture and Natural Resources Engineering, University of Hormozgan, Bandar Abbas, Iran. | ||
| چکیده [English] | ||
| The increasing production and consumption of plastic in the world has caused environmental problems. Monitoring of microplastics in natural ecosystems is needed. In the intertidal area of Qeshm mangrove forest beach, three sites were selected and water and runoff were sampled in 3 repetitions. The sediments were placed in an oven at 50 C˚ for 72 hours and passed through a 7 mm sieve. Then the sediment and water samples were first mixed with NaCl saturated solution and then with NaI saturated solution. The upper part of the saline solutions was filtered using Whatman filter paper (Cat No. 1442) and the filter paper was placed in an oven at 60 C˚ for 12 hours. Finally, the filters were examined by a stereoscope. Also, the amount of difference between the groups was investigated using variance analysis and F statistics. The highest and lowest number of microplastics in sediments were observed in site 1 with 54.67±19.14 MPs/Kg and in site 3 with 9.67±3.06 MPs/Kg, respectively. Also, the number of microplastics in water was the highest in site 1 with 17.33±6.51 MPs/L, and the lowest in site 3 with 3.33±1.53 MPs/L. A correlation was observed between microplastics in water and sediments (R2=0.96). The similarity based on the presence of microplastics in water and sediment was observed in sites 2 and 3 (ρ=0.95). In general, it can be said that the number of microplastics in water and sediment was higher in areas with more human activity and presence. | ||
| کلیدواژه‌ها [English] | ||
| Mangroves, Microplastics, Persian Gulf, Sediment | ||
| مراجع | ||
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