نوع مقاله : بوم شناسی
نویسندگان
1 گروه شیلات، دانشکده کشاورزی و منابع طبیعی، دانشگاه ارومیه، ارومیه، ایران
2 گروه بیولوژی و تکثیر و پرورش، پژوهشکده آرتمیا و آبزیان، دانشگاه ارومیه، ارومیه، ایران
3 گروه شیلات، دانشکده منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس، نور، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In the present study, effect of Palangan fish farms on abundance and distribution of macro-invertebratein three stations including 1) upstream station, 2) station a hundred meters after fish Farms and 3) 1 km after fish farms from January 2015 until June 2015 was investigated. For evaluation of different stations, indicators such as Hilsinhof (HFBI) and Shannon Diversity indices, were used. In this study, 4148 benthic animal were identified, that were belong to 18 families, 13 orders and 20 genus. Based on results, in terms of HFBI index and Shannon diversity, stations showed a significant difference (p <0.05). In general, the highest and lowest densities in March and June and Variety in May and February, respectively were observed. The most frequent macrobenthose belonged to station 1 in upstream and the lowest frequency at station 2 was located in 100 meters after farms. On average, highest and lowest Shannon Weiner Diversity indices were in June and Feberiery, May respectively. On average, Shannon Wiener Diversity Index was 1.26 over a 6-month period. From point of view water quality situation of the river in station 1 were exellent and in station 2 due to arrival of pollution was moderate. The average of the highest and lowest Hilsinhof index was in May and March, respectively. On average, Hilsinhof index was 5.94 over the course of 6 months. From point of view water quality situation of the river in station 1 were exellent and in station 2 due to arrival of pollution was moderate.
کلیدواژهها [English]