نتایج جستجو برای: relative abundance

تعداد نتایج: 455988  

Journal: Geopersia 2013
Bijan Beiranvand Ebrahim Ghasemi-Nejad, Mohammad Reza Kamali

Statistical studies on Palynology contents of Late Cretaceous to Paleocene age Gurpi Formation in a surface section in Zagros Basin,SW Iran indicate changes in abundance, species diversity, ratio of Spiniferites to Cyclonephelium (S/C), palynological marine index(PMI) values and organic facies. These palynological variations clearly reflect fluctuations in relative sea-level and depositionalenv...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان مرکزی 1383

چکیده ندارد.

Emmanuel Okrikata, Olajumoke Anuoluwa Yusuf,

A field survey was conducted in Wukari, Taraba State to assess the diversity and abundance of insect species in selected habitats (residential, open field made up of grassland and an agroecosystem). Sampling were done biweekly using light, pitfall and yellow pan traps set in 3 replicates, 30 m apart. Insects recovered were wet preserved in 70% ethanol except butterflies and moths. Representativ...

Journal: :Frontiers in Ecology and Evolution 2022

Agroecosystems are often impoverished ecosystems, but they can host diverse communities of insects which provide ecosystem services. Specifically, crops may benefit from insect pollinators that increase their quantity and quality yields. Basic knowledge is still needed regarding the identity, diversity, abundance, ecology in many parts world, especially low middle-income countries. In this stud...

Journal: :Proceedings of the National Academy of Sciences 1925

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