M. Trabucchi, P. Ntshotsho, P. O'Farrell, and F. A. Comín, "Ecosystem service trends in basin-scale restoration initiatives," A Review. Jour. Environ. Manag., vol. 111, pp. 18–23, 2012.
P. J. Gutiérrez-Yurrita, "How to restore riverbanks in natural ecosystems with many people using ecological services at the same time?," Chem. Engin. App., vol. 23, pp. 15-20, 2011.
E. Muñoz, J. L. Arumí, and D. Rivera, "Watersheds are not static: Implications of climate variability and hydrologic dynamics in modeling," Bosque, vol. 34, pp. 7-11, 2013.
CONABIO -Comisio?n Nacional Para El Conocimiento Y Uso De La Biodiversidad, Me?xico. Capital natural de Me?xico. Conocimiento actual de la biodiversidad vol. I: CONABIO Press, 2008.
J. San Román, L. Marín-García, P. Muñoz, M. A. López, and P. J. Gutiérrez-Yurrita, "Ecological considerations for the management of a protected area with a strong urban pressure: The case of Lake Texcoco, México," Inter. Jour. Ecol. and Environ. Sci., vol. 39, pp. 26-37, 2013.
P. J. Gutiérrez-Yurrita, J. A. Morales-Ortiz, and L. Marín-García, "Diversidad, distribución y estrategias de conservación de la ictiofauna de la cuenca del río moctezuma, centro de México," Limnetica, vol. 32, pp. 215-228, 2013.
B. Oshry, Seeing systems: Unlocking the mysteries of organizational life. UK: Berrett-Koehler Pub., 2008.
Y. Deng, M. A. Cardin, V. Babovic, D. Santhanakrishnan, P. Schmitterm, and A. Meshgi, "Valuing flexibilities in the design of urban water management systems," Water Res., vol. 47, pp. 7162-7174, 2013.
S. Auyang, Foundations of complex-system theories: In economics, evolutionary biology, and statistical physics. UK: Cambridge University Press, 1999.
H. H. Füssel, "Adaptation planning for climate change: Concepts, assessment approaches, and key lessons," Sustain. Sci., vol. 2, pp. 265-275, 2007.
A. H. Arthington, R. E. Tharme, S. O. Brizga, B. J. Pusey, and M. J. Kennard, Environmental flow assessment with emphasis on holistic methodologies. Sustaining livelihoods and biodiversity in the new millennium. Bangkok, Thailand: FAO, 2004.
A. H. Arthington, S. E. Bunn, N. L. Poff, and R. J. Naiman, "The challenge of providing environmental flow rules to sustain river ecosystems," Ecol Appli., vol. 16, pp. 1311-1318, 2006.
F. Cubillo, C. Casado, and V. Castillo, "Caudales ecológicos," Agencia De Medio Ambiente de Madrid, Madrid, España, 1990.
F. García-Trejo, S. Hurtado-González, G. Soto-Zarazúa, O. Alatorre-Jácome, and P. J. Gutiérrez-Yurrita, "Ecophysiological responses to the effect of annual management on an endemic viviparous fish in central plateau of México," Neotropical Ichthyology, vol. 11, pp. 117-123, 2013.
CSMN –Coordinación Del Servicio Meteorológico Nacional, "Estadísticas meteorológcas. México." Available from http://www.conagua.gob.mx, 2012.
P. J. Gutiérrez-Yurrita, J. A. Morales-Ortiz, A. Oviedo, and C. Ramírez-Pérez, "Distribution, spread, habitat characterization and conservation of the crayfish species (Cambaridae) in Querétaro (Central México)," Freshwater Crayfish, vol. 13, pp. 288-297, 2002.
S. Hurtado, F. Garci?a-Trejo, and P. J. Gutie?rrez-Yurrita, "Importancia ecolo?gica de los macroinvertebrados bento?nicos de la subcuenca del ri?o san juan, quere?taro, Me?xico," Folia Entomol. Mex., vol. 44, pp. 271-286, 2005.
J. Alcocer-Durand and F. Bernal, "Limnology in Mexico," Hydrobiol, vol. 644, pp. 15–68, 2010.
P. Alonso, E. González, and P. J. Gutiérrez-Yurrita, "Listado y distribución de los odonatos de la cuenca del río moctezuma, centro-occidente de México (Insecta: Odonata)," Folia Entomol. Mex, vol. 41, pp. 347-357, 2002.
P. J. Gutiérrez-Yurrita and U. Padilla, Análisis sintético de la fauna queretana y estrategias para su gestión y preservación. México: Secretaría De Desarrollo Sustentable del Estado De Querétaro Press, 2004.
J. A. Gore and G. E. Petts, Alternatives in regulated river management. USA: Boca Raton CRC Press, Inc., 1989.
C. Stalnaker, B. Lamb, J. Henriksen, K. Bovee, and J. Bartlow, The instream flow incremental methodology. Washington D.C.: A Primer for IFIM. US Department of Interior National Biological Service, 1995.
D. L. Tennant, "Instream flow regimens for fish, wildlife, recreation and related environmental resources," in Proceedings on Stream Flow Needs Symposium, Billings, USA, 1976, pp. 359-373.
N. L. Poff, J. D. Allan, M. B. Bain, J. R. Karr, K. L. Prestegaard, B. Richter, R. Sparks, and J. Stromberg, "The natural flow regime: A new paradigm for riverine conservation and restoration," Bio Science, vol. 47, pp. 769-784, 1997.
B. D. Richter, J. V. Baumgartner, R. Wigington, and D. P. Braun, "How much water does a river need?," Freshw, Biol., vol. 37, pp. 231-249, 1997.
K. D. Bovee, B. L. Lamb, J. M. Bartholow, C. B. Stalnaker, J. Taylor, and J. Henriksen, "Stream habitat analysis using the instream flow incremental methodology. Geological survey-BRD. Information and technology report USGS/BRD/ITR-1998-0004," Fort Collins, CO: U.S.1998.
E. García, R. González, P. Martínez, J. Athala, and G. Paz, Guía de aplicación de los métodos de cálculo de caudales de reserva ecológicos en México. México: Comisión Nacional Del Agua, Instituto Mexicano De Tecnología Del Agua, 1999.
J. M. King, R. E. Tharme, and D. V. M.S., "Environmental flow assessments for rivers: Manual for the building block methodology," Res. Unit. University of Cape Town, South Africa, Water Research Commission Report No.: TT 131/00. Freshw2000.
R. E. Tharme, "A global perspective on environmental flow assessment: Emerging trends in the development and application of environmental flow methodologies for rivers," River. Res. and Appl., vol. 19, pp. 397–441, 2003.
D. García De Jalón and M. González Del Tánago, "El concepto de caudal ecológico y criterios para su aplicación en los ríos españoles," Departamento De Ingeniería Forestal, Escuela de Ingenieros De Montes, Universidad Politécnica De Madrid. Madrid, España, 2004.
M. González Del Tángano and D. García De Jalón, "Attributes for assessing the environmental quality of riparian zones," Limnetica, vol. 25, pp. 389-402, 2006.
NMX-AA-159-SCFI, "Mexican standard that establishes the procedure for determining the ecological flow in watersheds," Official Journal of the Federation, August 2012.
Norma Oficial Mexicana NOM-011-CNA: Published in 2002, 2000.
A. Savory, Manejo holístico. Un nuevo marco metodológico para la toma de decisiones. México: SEMARNAT, 2005.
J. C. Smuts, Holism and evolution. USA: The Gestalt Journal Press, 1966.
E. O. Wilson, Conciliencia. La unificación del conocimiento. España: Círculo De Lectores, 1999.
P. J. Gutiérrez-Yurrita, ¡A diseñar el futuro! El holismo de la tercera cultura: Hacia la integración científica y cultura. México: Instituto Politécnico Nacional-Centro De Estudios Jurídico Ambientales Press, 2009.
C. Margules and S. Sarkar, Planeación sistemática de la conservación. México: Cambridge University Press-CONABIO, 2009.
J. Martínez, "Los conflictos ecológico-distributivos y los indicadores de sustentabilidad," Rev. Iberoamer. Econo. Ecol., vol. 1, pp. 21-30, 2004.
P. J. Gutiérrez-Yurrita, A. Ortega, A. Álvarez, L. García, and M. Rebollar, "The holistic management of the landscape of ethnic communities will reduce climate change and promote its sustainability," Inter Jour. Environ. Sci. and Develop, vol. 5, pp. 317-323, 2014.
P. J. Gutiérrez-Yurrita, S. Gorka, M. A. Bravo, A. Baltanás, and C. Montes, "Natural diet of the red swamp crayfish procambarus clarkii in the doñana national park freshwater marsh (SW-Spain)," Jour. Crusta. Biol., vol. 8, pp. 120-127, 1998.
A. M. Correia, N. Bandera, and P. Anastácio, "Predator–prey interactions of procambarus clarkii with aquatic macroinvertebrates in single and multiple prey systems," Acta Oecol., vol. 28, pp. 337-343, 2005.
M. Ilhéu, J. M. Bernardo, and S. Fernandes, "Predation of invasive crayfish on aquatic vertebrates: The effect of procambarus clarkii on fish assemblages in mediterranean temporary streams. In: Gherardi, F. (Ed): Biological invaders in inland waters: Profiles, distributions and threats," Inv. Ecol., vol. 29, pp. 543-558, 2007.
P. J. Gutiérrez-Yurrita, J. M. Martínez, M. Ilhéu, M. A. Bravo, J. Bernardo, and C. Montes, The status of crayfish populations in Spain and portugal. Crayfish in Europe as alien species: How to make the best of a bad situation?Crustacean issues. UK: Balkema, Rotterdam/Brookfield, 1999.
R. L. Vannote, "The river continuum concept," Can. Jour. Fish. Aquat. Sci., vol. 37, pp. 130-137, 1980.
J. A. Prado, "Economía ambiental y su aplicación en la gestión de cuencas hidrográficas," ICONAF, ERM, DFID. Chile., 1997.
P. J. Gutiérrez-Yurrita and M. A. López, "Reflexiones iusambientalistas sobre los criterios para proponer espacios naturales protegidos: Hacia una nueva categoría de conservación, el paisaje metafísico (O Espiritual)," Rev. Aranzadi De Derecho Ambiental, vol. 20, pp. 19-42, 2011.
A. Garrido, J. Pérez, and C. Enríquez, Delimitación de las zonas funcionales de las cuencas hidrográficas de México. Diagnóstico y priorización. Las Cuencas Hidrográficas De México: Instituto De Ecología De México Press, México, 2010.
M. Ortiz-Pérez, Clasificación ecogeográfica de las cuencas hidrográficas: El caso de México. Las cuencas hidrográficas de México: Diagnóstico y priorización. México: Instituto De Ecología De México Press, 2010.
V. Aguilar, M. Kolb, P. Koleff, and T. Urquiza, Las cuencas de México y su biodiversidad: Una vision integral de sus prioridades de conservación. Las cuencas hidrográficas de México: Diagnóstico y priorización. México: Instituto de Ecología de México Press, 2010.
CONABIO -Comisio?n Nacional Para El Conocimiento Y Uso De La Biodiversidad, Capital natural de Me?xico. Estado de conservacio?n y tendencias de cambio vol. 2. Me?xico: CONABIO Press, 2009.
CONAGUA –Comisión Nacional Del Agua, "Estadísticas nacionales. Subdirección general de programación, México." Available from http://www.conagua.gob.mx, 2011.
Pedro Joaquin Gutierrez-Yurrita (2014). A Socio-Economical Perspective for a Holistic Management of Temporary Watersheds in Central Mexico Based on a Simple Mathematical Model for Decision-Makers. International Journal of Natural Sciences Research, 2(10): 206-226. DOI:
This paper deals with the development of a new holistic math model to manage watersheds in Central Mexico. Hydrological resources in this medium-dry North-American region supply water to more than 49 million people. In addition, this region is considered as one of the most eco-diverse regions in the world. However, the high population density exerts great pressure on water resources in the area, leading to the edge of extinction to most of its biodiversity. Many mathematical models for estimating environmental flows have been developed, yet no model is truly holistic, even integrated, by not taking into account a variable of extreme importance to the ecological functioning of the watershed, its marked seasonal nature (temporality). Due to this lack of information on how to manage temporary rivers, most managers use conventional indices to estimate environmental flows or at best, use the standard Integrated River Basin Management model developed by http://wwf.panda.org/about_our_earth/about_freshwater/rivers/irbm/  though it is only for rivers with permanent flow. The aim of this paper is to present a reflection on the management of temporary flows, presenting a mathematical model that helps decision makers in their operation programs. The holism of the third culture is taken as the paradigm framework to build the model. It should be noted that an important aspect of the model is its simplicity, since it is to be used by people with little knowledge in mathematics and thus easy to take, and common to all the rivers of the region data.
•Seasonality of watersheds is an important factor as a source of biodiversity.
•Regulated rivers can be modeled as seasonal rivers.
•The proposed model presents diagnostic and control indicators easy to measure.
•This is the first model that really promotes a holistic management for seasonal basins.
The Use of Two New Formulations of Ocimum Canum Sims and Cymbopogon Schoenanthus L. In The Control of Amitermes Evuncifer Silvestri (Termitidae: Termitinae), in Togo
A. Sands, "Termites as pests of tropical food crops," Pans., vol. 19, pp. 167-177 1973.
J. Renoux, C. Rouland, P. Mora, and N. Hassen, "Dégâts causés par les termites champignonnistes dans les cultures de cannes à sucre en Afrique intertropicale," Actes for the1st International Symposium on Sugar Cane, vol. 1, pp. 124-130, 1991
T. G. Wood and M. J. Pearce, "Termites in Africa: The environmental impact of control measures and damage to crops, trees, rangeland and rural buildings," Sociobiology, vol. 19, pp. 221-234, 1991.
A. Fuchs, A. Schreyer, S. Feuerbach, and J. Korb, "A new technique for termite monitoring using computer tomography and endoscopy," International Journal of Pest Management, vol. 50, pp. 63-66, 2004.
J. M. W. Logan, "Damage to surghum by termites (Isoptera: Macrotermitinae) in the Lower Shire Valley, Malawi," Sociobiology, vol. 19, pp. 305-307, 1991.
M. W. Pretorius, H. Van Ark, and J. D. Mohr, "Preliminary mound-fumigation trials for the control of trinervitermes trinervoides colonies (Isoptera: Termitidae)," Phytophyl., vol. 23, pp. 89-90, 1991.
P. Kiwuso, G. Maiteki, and J. Okorio, "Indigenous methods of controlling termites in agroforestry systems in Uganda," Uganda Journal of Agricultural Sciences, vol. 9, pp. 893-895, 2004.
T. A. Agunbiade, F. E. Nwilene, A. Onasanya, M. Semon, A. Togola, M. Tamo, and O. O. Faloloa, "Resistance status of upland NERICA rice varieties to termite damage in Northcentral Nigeria," Journal Applied Sciences, vol. 9, pp. 3864-3869, 2009.
P. Mora, C. Rouland, V. Dibangou, J. Renoux, E. G. K. Veeresh, B. Mallik, and C. A. Viraktamath, Social insects and the environment. New Delhi, India: Oxford IBH, 1990.
T. G. Wood, R. A. Johnson, and C. E. Ohiagu, "Termite damage and crop loss in Nigeria – a review of termite (Isoptera) damage to maize and estimation of damage, loss in yield and termite (Microtermes) abundance at Makwa," Tropical Pest Management, vol. 26, pp. 241-253, 1980.
E. Anani Kotoklo, "Inventaire des termites et évaluation de leurs dégâts dans deux champs de cannes à sucre au sud du Togo," Thèse De Doctorat Unique: Université De Lomé, Togo, 2007.
L. Berdé, "Evaluation de l’efficience des différentes méthodes d’échantillonnage des termites dans un écosystème de culture de maïs à Lomé (Togo)," DEA: Université De Lomé, Togo, 2011, p. 66.
E. Anani Kotoklo, B. D. Kasseney, W. Nyamador, G. K. Kétoh, and A. I. Glitho, "Attaques des arbres par les termites sur le campus de l’Université de Lomé (Togo)," International Journal of Biology and Chemical Sciences, vol. 4, pp. 61-68, 2010.
J. N. B. K. Gbenyedji, E. Anani Kotoklo, K. Amévoin, and A. I. Glitho, "Diversité spécifique des termites (Isoptera) dans deux plantations de tecks (Tectona Grandis L.) au sud du Togo," International Journal of Biology and Chemical Sciences, vol. 5, pp. 766-773, 2011.
M. R. Mitchell, "Comparison of non persistent insecticides in controlled release granules with a persistent organochlorine insecticide for the control of termites in young eucalyptus plantations in Zimbabwe," Commonwealth Forest Review, vol. 68, pp. 281-295, 1989.
A. K. Djibo, "Analyse des huiles essentielles de quelques plantes de la flore du Burkina Faso appartenant aux familles des Lamiacea (Hyptis Spicigera Lam., Hyptis Suaveolens Poit., Ocimum Americanum L.) et des Poacea (Cymbopogon Schoenanthus (L.) Spreng., Cymbopogon citratus (DC.) Stapf.) ", Thèse De Doctorat De 3è Cycle. Université De Ouagadougou, Burkina Faso, 2000.
R. C. H. Nébié, Etude des huiles essentielles de plantes aromatiques du Burkina Faso: Production, composition chimique et propriétés insecticides. Th. Etat: Université de Ouagadougou, Burkina Faso, 2006.
R. P. Adams, Allured publishing corporation, identification of essential oil components by gas chromatography/ mass spectroscopy. Illinois, USA, 1995. pp. 469.
D. Joulain and W. A. König, The atlas of spectral data of sesquiterpene hydrocarbons. EB-Verlag: Hamburg, 1998.
C. Regnault-Roger and A. Hamraoui, "Efficiency of plants from South of France used as traditional protectant of phaseolus vulgaris L. against its bruchid acanthoscelides obtectus say," Journal of Stored Products Research, vol. 31, pp. 291-299, 1993.
J. W. M. Logan, R. H. Cowie, and T. G. Wood, "Termite control in agriculture and forestry by non-chemical methods: A review," Bull. of Ento. Res., vol. 80, pp. 309-330, 1990.
G. K. Kétoh, A. I. Glitho, Y. Nuto, and H. K. Koumaglo, "Effets de six huiles essentielles sur les œufs et sur les larves de Callosobruchus maculatus F. (Coléoptères : Bruchidae)," Revue CAMES, Série. Sciences et Médecine, vol. 00, pp. 16-20, 1998.
G. K. Kétoh, A. I. Glitho, H. K. Koumaglo, and F. X. Garneau, "Evaluation of essential oils from six plants in Togo for callosobruchus maculatus F. pest control," Insect. Sciences. Applicat., vol. 20, pp. 45-49, 2000.
G. K. Kétoh, A. I. Glitho, and J. Huignard, "Susceptibility of the bruchid (Callosobruchus Maculatus (F.) and its parasitoid Dinarmus basalis (Rond.) Hymenoptera pteromalidae to three essential oils," Journal of Economical Entomology, vol. 95, pp. 174-182, 2000.
W. S. Nyamador, G. K. Ketoh, K. Amevoin, Y. Nuto, H. K. Koumaglo, and A. I. Glitho, "Variation in the susceptibility of two callosobruchus species to essential oils," Journal of Stored Products Research, vol. 46, pp. 48-51, 2010a.
W. S. Nyamador, G. K. Ketoh, A. I. Glitho, and H. K. Koumaglo, "Activités ovicide et larvicide des huiles essentielles de cymbopogon giganteus Chiov. et de cymbopogon nardus L. rendle sur les stades immatures de callosobruchus maculatus F. et de C. subinnotatus pic. (Coleoptera: Bruchidea)," J. Soc. Ouest-Afr. Chim., vol. 029, pp. 67 -79, 2010b.
F. K. Ewete, J. T. Amason, J. Larson, and B. J. R. Philogène, "Biological activities of extracts from traditionally used Nigerian plants against the European corn borer, Ostrina nubilalis," Entomo. Exp. Appl., vol. 80, pp. 531-537, 1996.
K. Koba, P. W. Poutouli, Y. Nenonéné, Y. M. S. Songai, C. Raynaud, and K. Sanda, "Chemical composition and anti-termite activity of three tropical essential oils against termite species trinervitermes geminatus wasmann," J. Sciences et Technologies, vol. 5, pp. 39-46, 2007.
J. Bruneton, 3ème édition edition tec et doc, pharmacognosie. Paris: Lavoisier, 1999.
S. Delgarde, "Utilisation de nouvelles molécules dans la lutte contre plusieurs espèces de termites d’importance économique," Thèse d’Université, Université Paris XII-Val De Marne, 2002.
P. K. Akantétou, A. Y. Nénonéné, K. Koba, W. P. Poutouli, C. Raynaud, and K. Sanda, "Evaluation du potentiel insecticide de l’huile essentielle d’Ocimum canum sims. Sur aphis gossypii glover. (Homoptera: Aphididae) au Togo," International Journal of Biology and Chemical Sciences, vol. 5, pp. 1491-1500, 2011.
H. Chiason and N. Beloin, "Les huiles essentielles des biopesticides nouveaux. Revue de littérature, bulletin de la société d’entomologie du Quebec," Antennae, vol. 14, pp. 3-6, 2007.
M. B. Isman, "Plant essential oils for pest and disease management," Crop Protection, vol. 19, pp. 603-608, 2000.
A. Togola, Evaluation de la diversité des termites et de leurs dégâts sur le riz dans les conditions de culture de plateau à Niaouli au Bénin. Mémoire De DEA: Université De Lomé, Togo, 2010.
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Gbenyedji Koami Bezo Jean Norbert , Nyamador Wolali Seth , Kasseney Boris Dodji , Nebie Charles Honorat Roger , Ketoh Koffivi Guillaume , Anani Koto Klo Esse , Glitho Adole Isabelle (2014). The Use of Two New Formulations of Ocimum Canum Sims and Cymbopogon Schoenanthus L. In The Control of Amitermes Evuncifer Silvestri (Termitidae: Termitinae), in Togo. International Journal of Natural Sciences Research, 2(10): 195-205. DOI:
Today, the main concern of farmers and scientists is finding an alternative to the use of chemical pesticides in pest management, environmental pollution prevention and poisoning of the population. For this purpose, more and more studies are being carried out on biopesticides from plants used in local pharmacopoeia for the management of insect pests of crops and food stocks. In this study, the effect of a mixture of essential oil of Ocimum canum Sims with starch and that of Cymbopogon schoenanthus with starch were separately evaluated against Amitermes evuncifer Silvestri, one of the main pestiferous termites in Togo. These formulations were prepared from each plant at six different concentrations with and without sawdust. They were effective and caused significant mortality of Amitermes evuncifer. The formulation of essential oil without sawdust was more effective than that with sawdust. For the formulation without sawdust, 75 and 38% mortality respectively were recorded with C. schoenantus and O. canum at a dose of 0.5 mg/cm2, while 100% mortality was recorded at 2 mg/cm2 for both plants in both formulations. However, between the two plants, the formulations made from S. schoenantus were more effective on A. evuncifer than those made from O. canum. These new formulations made from the essential oils and starch could be used as biopesticide to control pestiferous insects in the field.
This study is one of the very few studies which have investigated the efficiency of a new formulation made of a mixture of essential oils (Ocimum canum and Cymbopogon schoenantus) with starch, against pestiferous termite.
Assessment of Heavy Metal Contamination of Dzindi River, In Limpopo Province, South Africa
O. F. Olorundare, R. W. M. Krause, J. O. Okonkwo, and B. B. Mamba, "Potential application of activated carbon from maize tassel for the removal of heavy metals in water," Phys. Chem. Earth, vol. 50-52, pp. 104-110, 2012.
J. Gasana, J. Morin, A. Ndikuyezeand, and P. Kamoso, "Impact of water supply and sanitation on diarrhea morbidity among young children in the socio economic and cultural context of Rwanda (Africa)," Environ. Res. Section A, vol. 90, pp. 76-88, 2002.
N. Ahalya, T. V. Ramachandra, and R. D. Kanamadi, "Biosorption of heavy metals," Res. J. Chem. Environ., vol. 7, pp. 71-78, 2003.
J. Wang and C. Chen, "Biosorbents for heavy metals removal and their future," Biotech. Adv., vol. 27, pp. 195–226, 2009.
O. Altum, M. T. Sacan, and A. K. Erden, "Water quality and heavy metal monitoring in water and sediment samples of the Kucukcekmece lagoon, Turkey," Environ. Monit. Assess., vol. 151, pp. 345-362, 2009.
E. E. Obasohan, J. A. O. Oronsaye, and O. I. A. Eguavoen, "A comparative assessment of the heavy metal loads in the tissues of a common catfish (Clarias Gariepinus) from Ikpoba and Ogba rivers in Benin city, Nigeria," Afr.Scient., vol. 9, pp. 13-23, 2008.
C. M. Zvinowanda, J. O. Okonkwo, M. M. Sekhula, N. M. Agyei, and R. Saiku, "Application of maize tassel for the removal of Pb,Se, Sr, U, V from borehole water contaminated in the presence of alkaline metals," J. Harzard. Mater., vol. 164, pp. 884-891, 2009.
M. M. Nthai, "An evaluation of irrigation water supply infrastructure to improve conveyance efficiency and water availability at Dzindi Irrigation Scheme, Limpopo Province," A Master’s Dissertation Submitted to the University of Pretoria, 2007.
J. S. Ogola, L. Chimuka, and D. Maina, "Occurrence and fate of trace metals in and around treatment and disposal facilities in Limpopo Province, South Africa: A case of two areas," Proceeding of the IASTED International Conference on Environmental Management and Engineering, 2009.
USEPA, "Drinking water and health: What you need to know," Ground Water and Drinking Water Fact Sheet, EPA 816-K-99-001, October 1999, 1999.
M. H. L. Poultsen and P. Grandjean, "Risk of high copper content in drinking water," Ugeskr. Laeger, vol. 152, pp. 1806-90041-5782, 1990.
No any video found for this article.
Joshua N. Edokpayi , John O. Odiyo , Samuel O. Olasoji (2014). Assessment of Heavy Metal Contamination of Dzindi River, In Limpopo Province, South Africa. International Journal of Natural Sciences Research, 2(10): 185-194. DOI:
This study was carried out to evaluate the current water quality of Dzindi River in Limpopo Province, South Africa. pH, electrical conductivity (EC), total dissolved solids (TDS) and turbidity were measured using a pH meter, EC and TDS multimeter and a turbidimeter respectively. The water samples were collected from four different sampling points along the river and digested with concentrated nitric acid in a fume cupboard. The concentrations of the selected heavy metals (Al, Cr, Cu, Fe, Mn, Pb, and Zn) were determined in triplicate using a Perkin Elmer Flame Atomic Absorption Spectrophotometer. The pH values (7.47-7.53) from the sampling sites were lower than what is recommended by the Department of Water and Forestry (DWAF) guidelines of South Africa. The EC and TDS values obtained (30-133 mS/cm and 20.10-89.11 mg/l) were within the recommended guideline of DWAF. Turbidity values (4.61-25.82 NTU) exceeded the recommended level of ≤1NTU for domestic water use. The average concentrations of all the metals investigated were higher than the recommended levels of DWAF for the protection of aquatic life and domestic water use except copper. The order of heavy metal contamination followed the trend: Fe (1.33 mg/l) >Al (0.3 mg/l)>Mn (0.15 mg/l) >Zn (0.10 mg/l) >Cr (0.06 mg/l)>Cu (0.05 mg/l)> Pb (0.03 mg/l). Results from this investigation reveals that Dzindi River is contaminated with heavy metals and should not be used for domestic purposes without treatment due to the probable health effects it may have on the user, but it is suitable for irrigation purposes.
This study is one of very few studies which have investigated heavy metal concentrations in Dzindi River and gives a broader baseline information on the physicochemical parameters investigated.
Human Infecting Parasitic Worms, In Cockroaches from Odau in the Niger Delta Region of Nigeria
G. C. Ejezie, "The Nigerian environment and parasitic infections," Folia Parasitologica (PRAHA), vol. 30, pp. 89-95, 1983.
E. A. Ekpeyong and J. E. Eyo, "Prevalence of intestinal helminthes infections among schooling children in tropical semi urban communities," Animal Research International, vol. 5, pp. 804-810, 2008.
World Health Organisation, "Prevalence and control of intestinal parasitic infections," Technical Report Series, vol. 48, p. 749, 1983.
E. Michael, D. A. Bundy, A. Hall, L. Savioli, and A. Montressor, "This wormy world: Fifty years on – the challenge of controlling common helminthiasis in humans today," Parasitology Today, vol. 13, pp. 1-2, 1997.
B. A. Awolagu and O. A. Morenikeji, "Prevalence and intensity of intestinal parasites in five communities in South-East Nigeria," Journal African of Biotechnology, vol. 8, pp. 4542-4548, 2009.
S. I. Sulaiman, A. R. Sohadi, H. Yunus, and R. Iberahim, "The role of some cyclorrhaaphan flies as carriers of human helminthes in Malaysia," Medical Vet. Entomol., vol. 2, pp. 1-6, 1988.
S. Getachew, T. Gebre-Michael, B. Erko, M. Balkew, and G. Medhin, "Non-biting cyclorrhaphan flies (Diptera) as carriers of intestinal human parasites in slum areas of Addis Ababa, Ethiopia," Acta Tropica, vol. 103, pp. 186-194, 2007.
H. S. Myung and K. Kyu-Earn, "The cockroach and allergic diseases," Allergy, Asthma Immunol. Res., vol. 4, pp. 264-269, 2012.
K. I. Ziegelbauer, B. Speich, D. Musezahl, R. Bos, J. Keiser, and J. Utzinger, "Effects of sanitation on soil- transmitted helminths infection: Systematic review and mata-analysis," Journal PMed, vol. 9, p. e1001 162, 2012.
D. Walter, "Endocommensals of periplaneta Americana," Micscape Magazine, Available www.microsopy-uk.org.uk, 2005
P. D. S. Kinako, B. H. R. Wilox Evbaraye, and O. Salau, "Climate and vegetation. In: Land and people of Nigeria vol. 3" Rivers State-(Alogun E. J. and Tamuno, T. N). eds. Port Harcourt. Riverside Communications, 1989.
J. K. Baired, M. Mistrey, M. Prinster, and D. H. Connor, "Fatal human ascariasis following secondary massive infection," American Journal of Tropical Medicine and Hygiene, vol. 35, pp. 314-318, 1986.
J. A. Phills, A. J. Harrold, G. V. Whiteman, and L. Perelumtter, "Pulmonary infiltrates, asthma and eosinophilia due to ascariasis in man," New England Journal of Medicine, vol. 268, pp. 965-970, 1972.
A. J. Berry, E. G. Long, J. H. Smith, W. K. Gourley, and D. P. Fine, "Chronic relapsing colitis due to strongyloides stecoralis," American Journal of Tropical Medicine and Hygiene, vol. 32, pp. 1289-1239, 1983.
B. S. Draser and P. A. Barrow, Intestinal microbiology. Washington D.C.: American Society of Microbiology, 1985.
J. R. Busvine, Arthropod vectors of diseases. Disease spread by insects other than diptera, 2nd ed. London: Edward Anold Publisher, 1983.
R. Fotedar, U. B. Shriniwas, and A. Verma, "Cockroaches (Blatta Germanica) as carrier of microorganism of medical importance in hospitals," Epidemiology and Infection, vol. 197, pp. 181-188, 1991.
D. I. Cruden and A. J. Markovetz, "Microbial ecology of the cockroach gut," Annual Review of Microbiology, vol. 41, pp. 617-643, 1987.
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E. J. Okafor-Elenwo , A. C. Elenwo (2014). Human Infecting Parasitic Worms, In Cockroaches from Odau in the Niger Delta Region of Nigeria. International Journal of Natural Sciences Research, 2(10): 176-184. DOI:
Parasitic worms of difference species were obtained from cockroaches examined in Odau, a community in the Niger Delta region of Nigeria. One thousand (1000) cockroaches were caught from households (one hundred), randomly selected within the community. The helminths were identified as Trichuris trichuria.(N=313; 2O.6%); Ancylostoma duodenale (N=368; 24.4); Ascaris lumbricoides (N=571;36.6%); Strongylloides stecoralis(N=173;11.4%); and Trichostrongylous sp.(N=93; 6.1%). Seven hundred and ninety one (79.1%) out of the cockroaches, had parasitic helminths. The total number of parasites isolated was one thousand, five hundred and eighteen (1,518). The rate of occurrence of Ascaris sp. in the cockroaches was significantly higher (p<0.05) compare to the other parasites. The abundance of helminth parasitic species in the cockroaches examined in the present study indicate that the environment may not be in good sanitary condition. If this level of association between cockroaches and helminth parasites is maintained, the transmission of parasitic agents/diseases especially to humans in the area will increase.
This study is one of the very few studies which have investigated cockroaches (Periplaneta americana), in line with its association with helminths, found to be parasitic to the humans especially, in the Niger Delta, Nigeria. The parasites extracted from the cockroaches can cause diseases which are easily transmitted to people within the community, especially, where the sanitary condition is low.
Wood Production and Management of Woody Species in Homegardens Agroforestry: The Case of Smallholder Farmers in Gimbo District, South West Ethiopia
E. C. M. Fernandes and P. K. R. Nair, "An evaluation of the structure and function of tropical homegardens," Agricultural Systems, vol. 21, pp. 279-310, 1986.
A. Tesfaye, "Diversity in homegarden agroforestry systems of Southern Ethiopia," Dissertation, Wageningen University The Netherlands, 2005.
P. A. Wojtkowski, "Toward an understanding of tropical homegardens," Agrofororesty Systems, vol. 24, pp. 215–222, 1993.
L. Christanty, Homegardens in tropical Asia, with special reference to Indonesia.Tropical homegardens. Tokyo, Japan: United Nations University Press, 1990.
E. Torquebiau, "Are tropical agroforestry homegardens sustainable?," Agriculture, Ecosystem and Environment, vol. 41, pp. 189–207, 1992.
D. Jose and N. Shanmugaratnam, "Traditional homegardens of Kerala: A sustainable human ecosystem," Agroforestry Systems, vol. 24, pp. 203-213, 1993.
A. J. Mcneely and G. Schroth, "Agroforestry and biodiversity conservation traditional practices, present dynamics, and lessons for the future," Biodiversity and Conservation, vol. 15, pp. 549–554, 2006.
C. A. Harvey and W. A. Haber, "Remnant trees and the conservation of biodiversity in Costa Rican pastures," Agroforestry Systems, vol. 44, pp. 37-68, 1999.
M. Yitebitu, "The impact of over storey trees on sustainable coffee (Coffea Arabica L.) Production in Southern Ethiopia," Ph.D, Horizonte Bd. 25, Der Andere Verlag, Tönning, Lübeck and Marburg, 2009.
E. C. M. Fernandes, A. Oktingati, and J. Maghembe, "The Chagga homegardens: A multistoreyed agroforestry cropping system on Mt. Kilimanjaro, Northern Tanzania," Agroforestry Systems, vol. 2, pp. 73-86, 1984.
O. Soemarwoto, Homegardens: A traditional agroforestry system with a promising future. Agroforestry: A decade of development. Nairobi, Kenya: ICRAF, 1987.
C. Reijntjes, B. Haverkort, and A. Waters-Bayer, Farming for the future: An introduction to low-external input and sustainable agriculture. The Netherlands: Macmillan Press Leusden, 1992.
B. J. Alcorn, Ethnobotanical knowledge systems. The cultural dimension of development indigenous knowledge systems. London, UK: Intermediate Technology Publications, 1995.
H. Dupriez and D. Philippe, Trees and multi-storey agriculture in Africa. Belgium: A Textbook for Agroforestry Brussels, 1998.
P. E. Rusten and A. M. Gold, Indigenous knowledge systems and agroforestry projects in the central hills of Nepal. The cultural dimension of development indigenous knowledge systems. London, UK: Intermediate Technology Publications, 1995.
Y. Everett, Forest gardens of Highland Sri Lanka-An indigenous system for reclaiming deforested land. The cultural dimension of development indigenous knowledge systems. London, UK: Intermediate Technology Publications Ltd, 1995.
Sustainable Land Use Forum (SLUF), "Indigenous agroforestry practices and their implications on sustainable land use and natural resources management," The Case of Wonago Woreda Research Report No. 1.Addis Ababa, Ethiopia, 2006.
T. Motuma, "Woody species diversity of agricultural landscapes in Arsi Negelle District, Ethiopia: Implications for biodiversity conservation," MSc Thesis, University of Hawassa, Wondo Genet College of Forestry, Wondo Genet, Ethiopia, 2006.
A. Zemede and N. Ayele, "Homegardens in Ethiopia: Characteristics and plant diversity," SINET: Ethiopian Journal of Science, vol. 18, pp. 235-266, 1995.
A. Zemede and W. Zerihun, "Crop association of homegardens in Welayita and Gurage in Southern Ethiopia," SINET: Ethiopian Journal of Science vol. 20, pp. 73-90, 1997.
A. Zebene, "Tree species diversity, top soil condition and arbascular mycorrhizal association in the Sidama traditional agroforestry land use, Southern Ethiopia," PhD Thesis, Swedish University of Agriculture, Uppsala, Sweden, 2003.
E. Matheos, "Inventory of woody species in Bonga Forest," Institute of Biodiversity Conservation and Research. Technical Report No. 1. Addis Abeba, 2001.
CBFED, Coordination bureau of finance and economic development. Regional atlas. Southern nations, nationalities and people’s regional Sate Bureau of statistics and population. Awassa: E. M Press, 2004.
B. Grandin, Wealth ranking in smaller communities. A field manual, Nottingham, England. London, UK: Intermediate Technology Publications Ltd, 1988.
E. L. Crowley, "Rapid data collection using wealth ranking and other techniques," International Centre for Research in Agroforestry and Tropical Soil Biology and Fertility Program, pp. 16, 1997.
I. Hedberg and S. Edwards, "Flora of Ethiopia," Pittosporaceae to Araliaceae. The National Herbarium, Addis Ababa University, Addis Ababa and Asmara/ Uppsala, 1989.
S. Edwards, T. Mesfin, D. Sebsebe, and I. Hedberg, "Flora of Ethiopia and Eritrea," Part 1. Magnoliacea to Flacourtiacea. The National Herbarium, Addis Ababa University, Addis Ababa and Uppsala, 2000.
I. Hedberg, S. Edwards, and N. Sileshi, "Flora of Ethiopia and Eritrea," Part 1. Apiaceae to Dipsacaceae. The National Herbarium, Addis Ababa University, Addis Ababa and Uppsala, 2003.
I. Hedberg, I. Friis, and S. Edwards, "Flora of Ethiopia and Eritrea," Part 2. Asteraceae (Compositae). The National Herbarium, Addis Ababa University, Addis Ababa and Uppsala, 2004.
I. Hedberg, K. Ensermu, S. Edwards, D. Sebsebe, and E. Persson, "Flora of Ethiopia and Eritrea," Gentianaceae to Cyclocheilaceae. The National Herbarium, Addis Ababa University, Addis Ababa and Uppsala, 2006.
R. Muktar, "Farm characteristics and tree species diversity in Arbegona District, Highlands of Southern Ethiopia," MSc Thesis, University of Hawassa, Wondo Genet College of Forestry, Wondo Genet, Ethiopia, 2006.
C. Den Biggelaar, Farmer experimentation and innovation: A case study of knowledge generation process in agroforestry systems in Rwanda. Community forestry case study Series No. 12. Rome: FAO, 1996.
R. Aerts, K. Hundera, B. Gezahegn, P. Gijbelsc, M. Baeten, M. Van Mechelena, M. Hermya, B. Muysa, and O. Honnay, "Semi-forest coffee cultivation and the conservation of Ethiopian Afromontane rainforest fragments," Forest Ecology and Management, vol. 261, pp. 1034-1041, 2011.
J. Kahurananga, Y. Alemayehu, S. Tadesse, and T. Bekele, "Informal surveys to assess social forestry at Dibandiba and Aleta Wendo, Ethiopia," Agroforestry Systems, vol. 24, pp. 57-80, 1993.
J. Beer, R. Muschler, D. Kass, and E. Somarriba, "Shade management in coffee and cacao plantations," Agroforestry Systems, vol. 38, pp. 39–164, 1998.
G. S. Gilbert, "Evolutionary ecology of plant diseases in natural ecosystems " Phytopathology, vol. 40, pp. 13–43, 2002.
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Getahun Yakob , Zebene Asfaw , Solomon Zewdie (2014). Wood Production and Management of Woody Species in Homegardens Agroforestry: The Case of Smallholder Farmers in Gimbo District, South West Ethiopia. International Journal of Natural Sciences Research, 2(10): 165-175. DOI:
Homegardens are defined as a system of production of diverse plant species, which can be adjacent to household or slightly further away and is easily accessible. Wood production and management systems of Kaffa homegardens are poorly known. The study was conducted to assess the wood production and farmers’ strategy of managing woody species in Gimbo district, South West Ethiopia. A complete homegarden woody species inventory was carried out to collect vegetation data, while simple random sampling was used to select sample households within wealth categories. From two purposely selected sites, a total of 120 households were selected for interview and vegetation data collection. Semi-structured interviews, direct observation and focus group discussions were employed to gather information on farmers’ strategy of managing woody species. The DBH of all trees and shrubs ≥ 5cm was measured. The mean number of stems per garden was 34, ranging between 6 to 99. Wealth status of the household influenced the wood production of homegardens. At all studied villages, the largest number of stems per garden was recorded on gardens of wealthy households. Various trees and shrubs are managed on the same piece of land. About 92% of the respondents have retained different woody species in their homegardens while converting the original forest to settlement areas. Some woody species like Millettia ferruginea, Vernonia amygdalina, Ficus sur, Croton macrostachyus and Sapium ellipticum were more frequently retained than others. In general, the reasons for planting woody species were income generation, shade and fruit, in increasing importance order. About 96 % of the respondents did practice different types of management activities for the woody species they owned. The common management practices carried out in the homegardens were thinning, pruning, fertilizing, watering, protection, coppicing and lopping. However, only 2% of the respondents did practice compost preparation. Diseases of coffee and fruit trees were the major problem faced by the farmers in woody species management. Therefore, it is recommended that appropriate intervention either through research or extension has to take place in order to reduce the impacts.
Moreover, this study is one of very few studies which have investigated relevant information in order to ensure the conservation, management and sustainable utilization of woody resources in particular and the biodiversity as a whole.