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76 results for “Species Composition”
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Research ArticleOpen accessPhrase in the titleSeasonal Abundance and Species Composition of Nephotettix spp., in Endemic and Non-Endemic Areas of Rice Tungro Virus Disease in South Sulawesi Province, IndonesiaAndi Nasruddin, Muhammad Danial Rahim, FatahuddinRice tungro disease is semi-persistently transmitted by five species of leafhopper. Nephotettix virescens Distant and N. nigropictus Stal. (Homoptera: Cicadellidae) are predominant species in South Sulawesi with vectoring efficiencies of 83 and 27%, respectively. Relative composition of those species affects the RTV incidence in the field. The purpose of the study was to determine the presence and abundance of those … …OnLine Journal of Biological Sciences, Vol. 16, Issue 3 · 5 Oct 2016 · 7,587 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleLand use Type Pattern and Woody Species Composition Near Human Disturbed Landscapes on Mount Makiling, Luzon IslandInocencio E. Buot, Katsuhiro OsumiProblem statement: A field study near human disturbed landscape on Mount Makiling, Luzon Island, Philippines was done on the eastern slopes of the legendary mountain to determine the land use patterns and woody species composition. Approach: Forty permanent plots of 10×10m in 3 belt transects spaced at 200m apart were established from the undisturbed forests to the agricultural farms. Classification … …American Journal of Environmental Sciences, Vol. 7, Issue 4 · 26 Aug 2011 · 8,033 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleSpecies Composition, Ecological Parameters and Seasonal Changes of Planktonic Ciliates Population in Bukan Dam ReservoirA. Mohsenpour Azary, F. Mohebbi, A. Eimanifar et al.Problem Statement: Since there is no evidence to identify present species in the Bukan dam reservoir, therefore, this study was conducted to provide background for fisheries purposes. Approach: The abundance and species composition of ciliates were analyzed in the Bukan Dam reservoir (west Azerbaijan, Iran) from January to December 2007. Surface water samples were collected at monthly intervals at two … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 1 · 31 Mar 2010 · 7,784 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleSpecies Composition and Ecological Roles of Mycobiota in Selected Medicinal Plants of AzerbaijanPanah Z. Muradov, Konul F. Bakhshaliyeva, Nizami R. Namazov et al.About 30 species of medicinal and aromatic plants included in the flora of Azerbaijan have been studied for their mycobiota and the phytotoxic activity of the fungal species involved in their formation. It became clear that 79 fungal species were involved in the formation of the mycobiota of the studied plants, and they, in addition to participating in the formation … …OnLine Journal of Biological Sciences, Vol. 26, Issue 2 · 27 Jul 2026 · 527 accessesView PDFCite
InvestigationOpen accessPhrase in the titleComparison Analysis of Species Composition of Entomopathogenic Fungi Isolated from Bark Beetles (Coleoptera: Scolytidae)Rauza Abdukerim, Georgy Lednev, Miloš Trýzna et al.The monitoring outbreaks of bark beetles, flight activity of imago and development of larvae were conducted with pheromone traps and trap logs. We found more than 50 dead adults with symptoms white muscardine from several points under the bark. Healthy adults of Ips typographus without any pathogenic symptoms collected from pheromone traps and trap logs under bark in the forest … …OnLine Journal of Biological Sciences, Vol. 18, Issue 1 · 18 Jan 2018 · 7,596 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePollen Flavonoid/Phenolic Acid Composition of Four Species of Cactaceae and its Taxonomic SignificanceNorma Almaraz-Abarca, MarÍa G. Campos, Elí A. Delgado-Alvarado et al.The pollen flavonoid/phenolic acid composition of 14 individual of Stenocactus multicostatus subsp. zacatecasensis (Britton et Rose) U. Guzmán et Vázquez-Benitez, comb. et stat. nov., 11 of Echinocereus enneacanthus Engelmann, 8 of Echinocereus pectinatus (Scheidweiler) Engelmann and 12 of Mammillaria heyderi sensu lato (all belonging to Cactaceae) was analyzed by HPLC/DAD with the aim of determining the role of pollen profiles … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 3 · 30 Sep 2008 · 8,450 accessesView PDFCite
Research ArticleOpen accessIn the keywordsInfluence of Organic Fertilizers on the Restoration of the Biological Resource Potential of Natural Degraded Pastures in the Steppe Zone of Northern KazakhstanRashit Nurgaziyev, Bakyt Irmulatov, Beybit Nasiyev et al.The paper explores the opportunities for reducing the degradation of natural pastures and suggests an approach to their restoration using organic fertilizers. The work aims to determine the opportunities for restoring the biological resource potential of degraded pastures using organic fertilizers based on the principles of organic farming. In the steppe zone of Northern Kazakhstan, a study of the species … …OnLine Journal of Biological Sciences, Vol. 24, Issue 4 · 3 Sep 2024 · 4,160 accessesView PDFCite
Research ArticleOpen accessIn the keywordsStudy of the Efficiency of the Entomophage Habrobracon Hebetor Say to Control the Number of Etiella zinckenella Tr. on Soybean CropsIrina Sergeevna Agasyeva, Maria Vladimirovna Nefedova, Anton Sergeevich NastasiySoybean is a valuable crop in many countries of the world. The world sowing area of soybeans is about 100 million hectares. It is grown in the main agricultural regions of 90 countries. To obtain a stable yield level, it is necessary to take into account the activity of arthropod organisms, both harmful and beneficial. The species composition of arthropods … …OnLine Journal of Biological Sciences, Vol. 21, Issue 2 · 7 May 2021 · 6,762 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPhytoplankton Community of Elechi Creek, Niger Delta, Nigeria-A Nutrient-Polluted Tropical CreekO. A. Davies, J. F.N. Abowei, C. C. TawariProblem statement: Elechi Creek of the Upper Bonny Estuary in the Niger Delta contributes to the Rivers State Fish resources. It is a sink receiving organic anthropogenic wastes from Diobu, Eagle Island and waterfront dwellers of Diobu areas. Fishing, car washing, bathing, swimming and other human activities are constantly going on within and around this creek. Based on these activities, … …American Journal of Applied Sciences, Vol. 6, Issue 6 · 30 Jun 2009 · 7,968 accessesView PDFCite
Research ArticleOpen accessIn the keywordsCurrent Growth Conditions of Populus Diversifolia Schrenk and Populus Pruinosa Schrenk in the Syr-Darya ValleyPolina Vesselova, Karina Makhmudova et al.In the context of urbanization of territories and the intensification of agriculture, the biological diversity of animals and plants in their habitats is degrading. The purpose of the study is to determine the edaphic factors affecting the growth of Populus diversifolia Schrenk and Populus pruinosa Schrenk, as well as anthropogenic factors affecting their conservation in the Syr-Darya valley (Kazakhstan). For … …OnLine Journal of Biological Sciences, Vol. 22, Issue 4 · 6 Oct 2022 · 5,542 accessesView PDFCite