نتایج جستجو برای: najas
تعداد نتایج: 92 فیلتر نتایج به سال:
In 2018 and 2019, quantitative aquatic macroinvertebrate samplings were carried out in the river network of Bükkösdi-víz (Mecsek Mountain). The identification 325,865 specimens originated from 40 sampling sites resulted occurrences 125 different species belonging to 12 higher taxa (Gastropoda – 9, Bivalvia 1, Hirudinea 4, Malacostraca 6, Ephemeroptera 16, Odonata 12, Plecoptera 3, Heteroptera 1...
Recent reports of Najas marina L. (Hydrocharitaceae) from Sicily have been interpreted as a confirmation its presence on the island, where it was earlier mentioned in 1800s. However recent finds do not represent “N. marina” (currently N. major All.) but subsp. armata Horn (= delilei Rouy), different taxon, previously recorded Sicily. According to those and several new presented here, appears be...
This study determined the relative sensitivity of five species of aquatic macrophytes and six species of algae to four commonly used herbicides (atrazine, metribuzin, alachlor, and metolachlor). Toxicity tests consisted of 96-h (duckweed and algae) or 14-d (submerged macrophytes) static exposures. The triazine herbicides (atrazine and metribuzin) were significantly more toxic to aquatic plants ...
Abstract This study aims to determine some physical and chemical factors their impact on the abundance distribution of submersible aquatic plants for four selected stations in southern marshes, two Eastern Hammar marshes (Al-Burga Al-Sada) Al-Chebiyesh (Abu-Sobat Al-Baghdadia). Water plant samples were collected seasonally during year 2018. The water temperature, electrical conductivity, depth ...
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