Sign inSubmit
Tips: “quotes” for a phrase · author:Lee · a DOI goes straight to its article

86 results for “biodiversity”
Set a search alert
Research ArticleOpen accessIn the abstractGenetic Diversity of Some Saudi Barley (Hordeum Vulgare L.) Landraces Based on Two Types of Molecular MarkersMohamed Abdel Hamid Mohamed El-Awady, Adel Ahmed El-Sayed El-Tarras, Salah El-Din El-AssalProblem statement: Very little is known about the genetic diversity and morphological variability present in barley landrace in KSA, a country experiencing loss of biodiversity because of replacement of landraces with modern landraces. Approach: The molecular markers RAPD and ISSR were used as an efficient tools to estimate the intra-and inter-cultivar polymorphism among six barley KSA landraces collected from different … …American Journal of Applied Sciences, Vol. 9, Issue 5 · 12 Mar 2012 · 7,502 accessesView PDFCite
Research ArticleOpen accessIn the abstractMacroinvertebrate Communities Differences on Riverine Parts and Reservoirs of Zarrineh RiverR. Ahmadi, A. Aliyev, M. Seidgar et al.This study was conducted to identify present macro invertebrate’s fauna in reverine and reservoir parts of the Zarrinehrood River for fisheries purposes. The abundance and species composition of macro invertebrate were analyzed and compared in various parts of the Zarrinehrood River (west Azerbaijan, Iran) during November 2008-February 2009 to evaluate the rivers benthic fauna as a resource of fish and … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 1 · 24 Feb 2012 · 8,150 accessesView PDFCite
Research ArticleOpen accessIn the abstractMorphological Characterization and Variation in the Total Content of Reducing Sugars in Wild Populations of Agave angustifolia HawMartin Esqueda, Aldo Gutierrez, Guadalupe Palomino et al.Problem statement: Bacanora, a spirit, is distilled from wild populations of Agave angustifolia Haw. Loss of biodiversity must be taken into account when proposing sustainable management actions for this resource. In this study we identified the morphological variants of this species, as well as the weight and Total Content of Reducing Sugars (TRS) in the stem of the agave. Approach: … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 4 · 21 Oct 2011 · 8,553 accessesView PDFCite
Research ArticleOpen accessIn the abstractFluctuations of Phytoplankton Community in the Coastal Waters of Caspian Sea in 2006Siamak Bagheri, Mashhor Mansor, Marzieh Makaremi et al.Problem statement: The Caspian Sea ecosystem has been suffered with many problems since 1980s. Aanthropogenic pollution from heavy metals, hydrocarbons, pesticides, changes in the quantity of nutrient inputs by rivers, are significant threats to biodiversity and biological resources such as plankton structure in the Caspian Sea. According to the significant of phytoplankton community in marine system. The state of the … …American Journal of Applied Sciences, Vol. 8, Issue 12 · 20 Oct 2011 · 8,456 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of the Genetic Diversity of Peach Cultivars in Taif by RAPD-PCRMohamed A. Nagaty, Salah El-Din El-Assal, Mahmoud M. RifaatProblem statement: Peach genotypes from the Kingdom of Saudi Arabia were not adequately characterized at the biological and molecular levels. This study was carried out to characterize nine peach cultivars growing in Taif (KSA) at the biological and molecular levels. Approach: For the nine peach cultivars studied, flowering and fruiting indices were determined and eight, 10-base primers were used to … …American Journal of Applied Sciences, Vol. 8, Issue 7 · 24 Jun 2011 · 7,271 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Role of Home Stay for Ecotourism Development in East Coast Economic RegionMd. Anowar Hossain Bhuiyan, Chamhuri Siwar, Shaharuddin Mohamad Ismail, Rabiul IslamProblem statement: This study provided a brief discussion of home stay for ecotourism development in ECER. Home stay is a potential economic activity in tourism sector. The East Coast Economic Region (ECER) has numerous ecotourism resources including hills, mountains, lakes, waterways, state and national parks, recreational forest parks and forest reserves. Home stay should emphasize on the cultural practices as … …American Journal of Applied Sciences, Vol. 8, Issue 6 · 13 Jun 2011 · 9,860 accessesView PDFCite
Research ArticleOpen accessIn the abstractNitrogen Fixing Legumes in the Plant CommunitiesMohammed A.A. Al-FredanProblems statement: Numerous authors have used energetic to explain the ecological success of N-fixing plants. Legume biodiversity assessment, species dynamics, nitrogen fixation monitoring and environment impact assessment of these ecological events in Al-Hassa Oasis, Saudi Arabia are rare and need to be continuous and more frequent. Approach: Thus the objectives of this study were to analyze legume abundance within and … …American Journal of Environmental Sciences, Vol. 7, Issue 2 · 26 May 2011 · 7,400 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnt Diversity in a Sugarcane Culture without the Use of Straw Burning in Southeast, Sao Paulo, BrazilDébora Rodrigues De Souza, Erich Stingel, Luiz Carlos de Almeida et al.Problem statement: One of the current requirements of agroecosystem management is the maintenance of biodiversity. Manual sugarcane harvesting with the previous burning of straw has been gradually replaced by mechanical harvesting in Brazil. However, the diversity of Formicidae, which can be a natural pest controller, has not been studied in this new system yet. Approach: This study was carried out … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 2 · 30 Jun 2010 · 8,646 accessesView PDFCite
Research ArticleOpen accessIn the abstractChemical Composition of Propolis from Different Regions in Java and their Cytotoxic ActivitySyamsudin, Sudjaswadi Wiryowidagdo, Partomuan Simanjuntak, Wan Lelly HeffenProblem statement: Propolis samples from tropical zones, such as Java (Indonesia) with its vast biodiversity, have become a subject of increasing scientific and economic attention. The association of the chemical composition of propolis from different geographic regions with cytotoxic activities lead to the identification of active principles, a fundamental tool to achieve standardization of this bee product. Approach: The purpose … …American Journal of Biochemistry and Biotechnology, Vol. 5, Issue 4 · 31 Dec 2009 · 8,269 accessesView PDFCite
Research ArticleOpen accessIn the abstractGenetically Modified Organism Trade Route and Biosafety-Is It a Failing Synthesis?Debdatta Dobe, Rohini SenProblem statement: GM regulations have spawned international conflicting reactions especially between US and EU, with countries requiring food aid caught midway. This article covers the following issues: Whether biotechnology policies of other countries affect the developing countries’ trade in agricultural crops?" Does unregulated GM expansion and contamination, render the system fallacious? Can there be synthesis between trade and environment? Approach: … …American Journal of Economics and Business Administration, Vol. 1, Issue 3 · 30 Sep 2009 · 7,697 accessesView PDFCite