کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8848744 1618290 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Trophic gradients of two minnow species with similar eco-type and their relations to water chemistry and multimetric biological integrity
ترجمه فارسی عنوان
شیب های طوفان از دو گونه مینووی با محیط زیست مشابه و روابط آنها با شیمی آب و یکپارچگی بیولوژیکی مولتی متریک
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
The objectives of this study were to determine tolerance ranges and trophic gradients of two fish populations of Zacco koreanus (Zk) and Zacco platypus (Zp) in relation to chemical water quality and ecological stream health, based on the biological integrity metric (BIM) model. Seventy-six streams and rivers were sampled for the analysis. The population of Zk had a narrow chemical tolerance with a low phosphorus limit (< 300 μg/L as total phosphorus), whereas the Zp population occurred within a high limit (up to 1,100 μg/L). Similar patterns in the two populations were shown in nitrogen, biological oxygen demand, suspended solids, and other parameters. The population of Zp had significantly (t = 5.25, p < 0.001) greater chemical tolerance than the population of Zk. The population of Zk had a positive functional relation (R2 = 0.43, p < 0.001) with insectivore species, but the Zp population had negative linear function (R2 = 0.50, p < 0.001), indicating a trophic difference in the food chain of two populations. Application of the biological integrity model indicated that the values of BIM, as an index of ecological health, were significantly greater (t = 13.67, p < 0.001) in the population of Zk than the population of Zp.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Asia-Pacific Biodiversity - Volume 10, Issue 3, 1 September 2017, Pages 371-378
نویسندگان
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