کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5741613 | 1617124 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A multi-assemblage, multi-metric biological condition index for eastern Amazonia streams
ترجمه فارسی عنوان
چند شاخصه بیولوژیکی چند متغیری برای جریانهای آمازون شرقی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
Multimetric indices (MMIs) are widely used for assessing ecosystem condition and they have been developed for a variety of biological assemblages. However, when multiple assemblages are assessed at sites, the assessment results may differ because of differing physiological sensitivities to particular stressor gradients, different organism size and guilds, and the effects of different scales of disturbances on the assemblages. Those differences create problems for managers seeking to avoid type-1 and type-2 statistical errors. To alleviate those problems, we used an anthropogenic disturbance index for selecting and weighting metrics, modeled metrics against natural variability to reduce the natural variability in metrics, and developed an MMI based on both fish and aquatic insect metrics. We evaluated eight different ways of calibrating and combining candidate metrics and found that MMIs with unweighted and modeled aquatic insect and fish metrics were the preferred MMI options.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Indicators - Volume 78, July 2017, Pages 48-61
Journal: Ecological Indicators - Volume 78, July 2017, Pages 48-61
نویسندگان
Kai Chen, Robert M. Hughes, Janaina G. Brito, Cecilia G. Leal, Rafael P. Leitão, José M.B. de Oliveira-Júnior, VÃvian C. de Oliveira, Karina Dias-Silva, Silvio F.B. Ferraz, Joice Ferreira, Neusa Hamada, Leandro Juen, Jorge Nessimian, Paulo S. Pompeu,