کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4372956 1617138 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessing the suitability of five benthic indices for environmental health assessment in a large subtropical South American estuary
ترجمه فارسی عنوان
ارزیابی تناسب پنج شاخص اعماق دریا برای ارزیابی سلامت زیست محیطی در یک خور بزرگ نیمه گرمسیری در آمریکای جنوبی
کلمات کلیدی
ماکروبنتوزها؛ غنی سازی مواد آلی؛ شاخص حیات وزندگی؛ آنالیز اشکالات. خلیج پاراناگوا
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی

Despite the increased and widespread usage of benthic indices for environmental health assessment, some methodological ambiguities remain to be solved. We tested the congruence and consistency of the benthic indices ITI, BO2A, BENTIX, AMBI and M-AMBI in a subtropical estuary (Paranaguá Bay, Brazil). Indices were applied to non-vegetated tidal flats increasingly contaminated by sewage to test: (i) correlations with molecular biomarkers of sewage (consistency); and (ii) evaluate the overall agreement/similarity of responses (congruence). The responses of the benthic indexes ITI, AMBI and BO2A were congruent among themselves and consistent with molecular biomarkers values. BENTIX and M-AMBI were less consistent and congruent and possibly need a readjustment of boundaries for subtropical habitats. The indices seemed robust to natural background yearly variations not related to contamination. Faecal sterols associated to nutrient contents suitably supported the validation of indices and could integrate reference conditions for sewage impacted coastal habitats. Benthic indices can successfully integrate management guidelines, but their suitable application demands further research on tolerance shifts of key indicator species.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Indicators - Volume 64, May 2016, Pages 258–265
نویسندگان
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