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:: Volume 24, Issue 1 (4-2015) ::
isfj 2015, 24(1): 47-58 Back to browse issues page
Quantitative assessment of the impact of Mnemiopsis leidyi on the southern Caspian zooplankton structure during 1996-2010
F. Eslami * 1, N. Pourang , H. Nasrollahzade Saravi , H. Fazli , A. Roohi , M. Roshantabari
Abstract:   (8308 Views)
After the arrival of the invasive species (Mnemiopsis leidyi) in the Caspian Sea (in 1999) significant changes have been occurred in the ecosystem. In the present study, the data concerning the period 1996 to 2010 (extracted from the relevant research projects) were analyzed. The period was classified into two phases, before and after the species invasion (1996 and 2001-2010). In our study, the impact of the invasive species on the structure of southern Caspian zooplankton communities was assessed during the period 2001-2010, quantitatively.The combination of abundance and distribution range of the species (ADR) during the period 2001-2009 and the year 2010 were evaluated as E (occurrence in high numbers in all localities) and D (occurrence in moderate numbers in all localities), respectively. Considering the obtained results, the year 2001, in which the relative biomass was more than 90 percent, could be considered as the expansion phase and the following years (2002-2010) as the adjustment phase. With regards to the loss of the keystone and some other native species after the invasion of M. leidyi (2001 to 2010), the impact of the invasive species on the structure of southern Caspian zooplankton communities was assessed as massive (C4).
Keywords: Mnemiopsis leidyi, Zooplankton structure, Southern Caspian Sea coast
Full-Text [PDF 978 kb]   (1818 Downloads)    
Type of Study: Research | Subject: اكولوژي محيطهاي آبي
Received: 2015/06/14 | Accepted: 2015/06/14 | Published: 2015/06/14
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Eslami F, Pourang N, Nasrollahzade Saravi H, Fazli H, Roohi A, Roshantabari M. Quantitative assessment of the impact of Mnemiopsis leidyi on the southern Caspian zooplankton structure during 1996-2010. isfj 2015; 24 (1) :47-58
URL: http://isfj.ir/article-1-1346-en.html


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Volume 24, Issue 1 (4-2015) Back to browse issues page

با کسب مجوز از دفتر کمیسیون بررسی نشریات علمی وزارت علوم، تحقیات و فنآوری مجله علمی شیلات بصورت آنلاین می باشد و تعداد محدودی هم به چاپ می رساند. شماره شاپای جدید آن ISSN:2322-5998 است

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