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Variscan structural evolution of the western High Atlas and the Hauouz plain (Morocco)

Dias, Rui; Hadani, Mohamed; Leal Machado, Isabel; Adane, Naima; Hendaq, Youssef; Madih, Khadija; Matos, Catarina
Fonte: Elsevier / Journal of African Earth Science Publicador: Elsevier / Journal of African Earth Science
Tipo: Artigo de Revista Científica
POR
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The Variscan belt is one of the major geological features of Morocco. Based on the paleogeography of the Paleozoic formations and related tectonometamorphic evolution, different domains have been proposed for this segment of the orogen. The Western High Atlas is one of such domains, which is usually considered as an external zone of the orogeny where most of its deformation is ascribed to a first and main Variscan tectonic event (D1). Such a deformation has been detailed described in previous studies that emphasize an N-S folding with a western facing. These folds, having an axial plane cleavage, locally rotate in a continuous way to a NE-SW trend, becoming subparallel to major dextral coeval shear zones. In this work a late D1 stage is characterized (D1b) which is restricted to the vicinity of regionally scale sinistral WNW-ESE shear zones. The previous structures (D1a) are deflected by these shears with a kinematics compatible with their sinistral movement. The previously described Lalla Takerkoust fault in the Haouz plain and the newly proposed Adassil shear zone are ascribed to such event. The ENE-WSW dextral shears and the WNW-ESE sinistral ones should be considered as conjugated systems during the D1 event. Nevertheless, as the dextral family is synthetic of the oblique collision between Laurentia and Gondwana...

New Geothermal Prospect in North-Eastern Morocco

Rimi, Abdelkrim; Correia, António; Carneiro, Júlio; Verdoya, Massimo; Zarhloule, Yassine; Lucazeau, Francis; Boughriba, Mimoun; Barkaoui, Alae Eddine
Fonte: International Geothermal Association Publicador: International Geothermal Association
Tipo: Artigo de Revista Científica
ENG
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Geothermal data has been indicating promising potentialities in the north-eastern Morocco. This paperpresents new temperature data, recently recorded in water borehole located in the Berkane and Oujda areas. Generally, the observed temperature gradients are rather high. One hole near Berkane, revealed an average geothermal gradient of more than 110 ºC/km at depths greater than 300 m. This result confirms the geothermal gradient estimated in a mining borehole located about 30 km west of the Berkane borehole, in which water temperatures of 96 ºC are reached at a depth of about 700 m. Such a high geothermal gradient, exceeding by far the ones already determined for northeastern Morocco, could act as a stimulus to programs aimed at the geothermal exploitation of high temperature aquifers.

Towards a de-carbonized energy system in North-Eastern Morocco: Prospective Geothermal Resource

Rimi, Abdelkrim; Zarhloule, Yassine; Barkaoui, Alae Eddine; Correia, António; Carneiro, Júlio; Verdoya, Massimo; Lucazeau, Francis
Fonte: Elsevier Limited Publicador: Elsevier Limited
Tipo: Artigo de Revista Científica
ENG
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Geothermal data has been indicating promising potentialities in the north-eastern Morocco. This paper presents new temperature data, recently recorded in water boreholes located in the Berkane and Oujda areas. Generally, the observed temperature gradients are rather high. One hole near Berkane, revealed an average geothermal gradient of more than 110 °C/km at depths greater than 300 m. This result confirms the geothermal gradient estimated in a mining borehole located about 30 km west of the Berkane borehole, in which water temperature of 96 °C is reached at a depth of about 700 m. Such a high geothermal gradient, exceeding by far the ones already determined for northeastern Morocco, could act as a stimulus to programs aimed at the geothermal exploitation of high temperature aquifers.

Structural and hydrogeological features of a Lias carbonate aquifer in the Triffa Plain, NE Morocco

Sardinha, João; Carneiro, Júlio; Zarhloule, Yassine; Barkaoui, Alae Eddine; Correia, António; Boughriba, Mimoun; Rimi, Abdelkrim; Houadi, B. El
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
ENG
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The rising demand for water and the contamination of shallow water table aquifers has led authorities in NE Morocco to look for deeper groundwater resources in the Triffa Plain, namely in Lower Jurassic (Lias) dolomitic limestones. The liassic aquifer is of strategic importance for the development of the region, however, its hydrodynamic behaviour is poorly understood due to lack of hydrogeological data and block structure. This article presents a first effort towards understanding the structure and hydraulic behaviour of the aquifer. Exploration borehole data and results from geophysical campaigns were integrated into a GIS environment to build a preliminary model of the aquifer structure. The aquifer behaves as an unconfined aquifer in the northern part of the Béni Snassen Mountains (the recharge area), but as it dips to the north, it becomes confined by marls and shales of the Middle/Upper Jurassic. Even though piezometric level data are scarce, a tentative piezometric map was produced. Three blocks separated by NW–SE trending faults in a horst and graben structure, with distinct flow behaviours were identified: Berkane, Fezouane and Sidi Rahmoun blocks. Those blocks also show differences in hydraulic conductivity distribution. As a result of the reaction with the dolomitic limestones...

New records of Orchids from Morocco

Vázquez, Francisco; Pinto-Gomes, Carlos; Sánchez-Mata, Daniel; Gavilán, Rosario; Ferreira, Rodrigo; Vilches, Beatriz
Fonte: Journal Europäischer Orchideen Publicador: Journal Europäischer Orchideen
Tipo: Artigo de Revista Científica
ENG
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The exploration of the Rif Valley (Morocco) during 2010 revealed the presence of some new taxa and records from Morocco. The new taxa are: Orchis langei subsp. magrebensis and Ophrys neglecta var. riphaea. Ophrys neglecta var. neglecta and Ophrys numida have been detected for the first time in Morocco.

Towards a de-carbonized energy system in north-eastern Morocco: Prospective geothermal resource. Renewable and Sustainable Energy Reviews

Rimi, A.; Zarhloule, Y.; Barkaoui, A.; Correia, A.; Carneiro, J.; Verdoya, M.; Lucazeau, F.
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
37.12%
Geothermal data has been indicating promising potentialities in the north-eastern Morocco. This paper presents new temperature data, recently recorded in water borehole located in the Berkane and Oujda areas. Generally, the observed temperature gradients are rather high. One hole near Berkane, revealed an average geothermal gradient of more than 110 ºC/km at depths greater than 300 m. This result confirms the geothermal gradient estimated in a mining borehole located about 30 km west of the Berkane borehole, in which water temperatures of 96 ºC are reached at a depth of about 700 m. Such a high geothermal gradient, exceeding by far the ones already determined for north-eastern Morocco, could act as a stimulus to programs aimed at the geothermal exploitation of high temperature aquifers.

Hydrogeological and structural features of a Lias carbonate aquifer in the Triffa plain, NE Morocco.

Sardinha, J.; Carneiro, J.; Zarhloule, Y.; Barkaoui, A.; Boughriba, M.; Correia, A.; Rimi, A.; El Houadi, B.
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
36.97%
The rising demand for water and the contamination of shallow water table aquifers has led authorities in NE Morocco to look for deeper groundwater resources in the Triffa Plain, namely in Lower Jurassic (Lias) dolomitic limestones. The liassic aquifer is of strategic importance for the development of the region, however, its hydrodynamic behaviour is poorly understood due to lack of hydrogeological data and block structure. This article presents a first effort towards understanding the structure and hydraulic behaviour of the aquifer. Exploration borehole data and results from geophysical campaigns were integrated into a GIS environment to build a preliminary model of the aquifer structure. The aquifer behaves as an unconfined aquifer in the northern part of the Béni Snassen Mountains (the recharge area), but as it dips to the north, it becomes confined by marls and shales of the Middle/Upper Jurassic. Even though piezometric level data are scarce, a tentative piezometric map was produced. Three blocks separated by NW-SE trending faults in a horst and graben structure, with distinct flow behaviours were identified: Berkane, Fezouane and Sidi Rahmoun blocks Those blocks also show differences in hydraulic conductivity distribution. As a result of the reaction with the dolomitic limestones...

Reconstruction of remote climate change from borehole temperature measurement in the eastern part of Morocco.

Barkaoui, A.; Correia, A.; Zarhloule, Y.; Rimi, A.; Carneiro, J.; Boughriba, M.; Verdoya, .
Fonte: Springer Publicador: Springer
Tipo: Artigo de Revista Científica
POR
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Data from temperature measurements inboreholes are indicators of the temperature variations associated with past climate change. This paper is a contribution to reconstruct the ground surface temperature history (GSTH) from geothermal data in the eastern part of Morocco. From a set of several temperature logs, measured in the study area, only two were found suitable for estimating the ground surface temperature history (GSTH). In order to reconstruct the surface temperature past changes the functional space inversion method (FSI) was used. The inversion reveals a recent warming in the last century with respective amplitude of 0.1 °C and 1 °C for the boreholes 2952 in Oujda and 1624 in Berkane. These results can be confirmed by the air temperature record of the meteorical station in Oujda despite the scarceness of data beyond 1959.

Reconstruction of remote climate change from borehole temperature measurement in the eastern part of Morocco

Barkaoui, Alae-Eddine; Correia, António; Zarhloule, Yassine; Rimi, Abdelkrim; Carneiro, Júlio; Boughriba, Mimoun; Verdoya, Massimo
Fonte: Springer Publicador: Springer
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
36.97%
Data from temperature measurements in boreholes are indicators of the temperature variations associated with past climate change. This paper is a contribution to reconstruct the ground surface temperature history (GSTH) from geothermal data in the eastern part of Morocco. From a set of several temperature logs, measured in the study area, only two were found suitable for estimating the ground surface temperature history (GSTH). In order to reconstruct the surface temperature past changes the functional space inversion method (FSI) was used. The inversion reveals a recent warming in the last century with respective amplitude of 0.1 °C and 1 °C for the boreholes 2952 in Oujda and 1624 in Berkane. These results can be confirmed by the air temperature record of the meteorical station in Oujda despite the scarceness of data beyond 1959.

Multilingualism, identity and dynamics of change in Morocco: toward a new glottopolitical model

Srhir, Adil Moustaoui
Fonte: Centro de Estudos Internacionais do Instituto Universitário de Lisboa (ISCTE-IUL) Publicador: Centro de Estudos Internacionais do Instituto Universitário de Lisboa (ISCTE-IUL)
Tipo: Parte de Livro
Publicado em //2014 ENG
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This paper examines language policy and identity in Morocco and its relationship with sociolinguistic dynamics of change. The analysis focuses on the importance of the language policy and identity axis in the creation of the unitary nation state model that has been implemented in Morocco since the Independence. The paper also presents a review of the evolution of the linguistic diversity in Morocco from a critical sociolinguistic point of view in an attempt to show how this landscape has evolved over recent years, creating a dynamic market of change in language and identity in Morocco. Finally, the paper presents a critical evaluation of the Moroccan state’s model of language policy and identity, proposing a different model according to the dynamics of change currently taking place.

Epidemiological survey of scorpion envenomation in southwestern Morocco

TOULOUN,O.; SLIMANI,T.; BOUMEZZOUGH,A.
Fonte: Centro de Estudos de Venenos e Animais Peçonhentos - CEVAP, Universidade Estadual Paulista - UNESP Publicador: Centro de Estudos de Venenos e Animais Peçonhentos - CEVAP, Universidade Estadual Paulista - UNESP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2001 EN
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The high frequency and severity of scorpion envenomation in Morocco is a serious public health problem, especially in semi arid and arid areas with a large rural population. In view of this alarming situation, we have conducted this investigation on scorpion envenomation in the Haouz and Souss plains between 1994 and 1998. Preliminary results have shown a high rate of scorpion envenomation with several deaths. With the exception of Scorpio maurus, the suspected species are generally anthropophilous, which belong to the Androctonus genera of the Buthidae family. The Buthidae family is responsible for 96.93% of the envenomings. In the southwestern Morocco, the death rate is of about 3.84%. The Androctonus mauretanicus is responsible for 60% of deaths. We show the various therapeutic modalities used by the local populations and propose prophylactic measures, such as awareness and prevention.

Epidemiological and clinical characteristics of scorpion stings in children in fez, Morocco

Abourazzak,S; Achour,S; El Arqam,L; Atmani,S; Chaouki,S; Semlali,I; Soulaymani Bencheikh,R; Bouharrou,A; Hida,M
Fonte: Centro de Estudos de Venenos e Animais Peçonhentos - CEVAP, Universidade Estadual Paulista - UNESP Publicador: Centro de Estudos de Venenos e Animais Peçonhentos - CEVAP, Universidade Estadual Paulista - UNESP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2009 EN
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Scorpion stings are a public health problem in Morocco, especially among children, who experience the most severe cases. Epidemiological and clinical findings on scorpion stings in Fez, Morocco, were evaluated in this investigation. Of 163 cases that required medical attention, 62.6% were male children. The mean age of patients was 4.8 ± 3.4 years. The mean time between stings and first medical attention was 3.36 ± 2.5 hours. Almost all cases occurred in the summer (94%) and extremities represented the most frequent sting sites (86.5%). Local pain, hyperemia, scarification, vomiting, sweating, restlessness, tachycardia and tachypnea were the observed clinical symptoms. Regarding severity, 55.2% of patients belonged to class III, followed by class II (26.4%) and class I (18.4%). None of our patients received antivenom; however, all of them were treated symptomatically depending on clinical manifestations.

Epidemiological profile of snakebites in Morocco

Arfaoui,A; Hmimou,R; Ouammi,L; Soulaymani,A; Mokhtari,A; Chafiq,F; Soulaymani-Bencheikh,R
Fonte: Centro de Estudos de Venenos e Animais Peçonhentos - CEVAP, Universidade Estadual Paulista - UNESP Publicador: Centro de Estudos de Venenos e Animais Peçonhentos - CEVAP, Universidade Estadual Paulista - UNESP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2009 EN
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The present work aims to find the epidemiological profile of snakebites in Morocco through a retrospective study of 1,423 snakebite cases that occurred between 1992 and 2007. Data were obtained from medical charts of envenomation at the Poison Control and Pharmacovigilance Center of Morocco. Results revealed that 86% of the snakebites had occurred in rural areas and that males were significantly more affected than females at a sex ratio of 23:20. Furthermore, 35% of the bites happened during the summer, with a peak of 215 cases in June (15.1%). We also discovered that 67.3% of the patients were bitten during the day. The age group that comprised the most agriculturally active persons, from 20 to 44 years old, was the most affected by snakebites (551 cases). In terms of evolution, patients who were at least 60 years of age (8.89%) as well as those who were less than 10 years old (7.50%) presented higher mortality. According to clinical severity grades, the data revealed a 70% predominance of grade 2 cases (430). Deaths had occurred only in patients with grades 3 and 4. Furthermore, grade 4 patients presented 100% mortality whereas grade 3 registered 10.7%. The distribution of snakebites according to administrative regions in Morocco showed a predominance of the Souss-Massa-Daraa region both in terms of frequency (32%) and mortality (72.1%). Our study clearly displayed the severity and extent of the snakebite problem in the country...

Naṣīḥa and Ideology: Evolution in Religious Authority in Post-Colonial Morocco

Anhorn, Evan Christopher
Fonte: Quens University Publicador: Quens University
Tipo: Tese de Doutorado
EN
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The relationship between religious authority and political power has been continuously redefined in the tumultuous setting of post-Colonial Morocco. In this paper, I examine new and innovative trends in one traditional Moroccan formulation of this relationship–the letter of advise from religious scholar to ruler, or naṣīḥa–as one space where the historical balance of power has undergone radical transformation in modern times. While this form of religio-political contestation is itself not new to Morocco’s dizzying history of competition over religious legitimacy, the contours of the modern challenge, I argue, have been significantly shaped by French colonial policy towards the long established authority of Morocco’s Islamic scholars. As we will see, this situation is brought into especial relief through an examination of the changing nature of religious scholarship and education in Morocco, as it developed in response to European colonial pressure in the pre-colonial period (roughly mid-19th century to the early 20th), as it was affected by the French Protectorate (1912- 1956) and as it has emerged in the new era of Moroccan independence (1956 to the present). As the popularly grounded conceptions of religious knowledge changed under the French Protectorate...

Description and crystal structure of maghrebite, MgAl₂(AsO₄)₂(OH)₂•8H₂O, from Aghbar, Anti-Atlas, Morocco: first arsenate in the laueite mineral group; Description and crystal structure of maghrebite, MgAl(2)(AsO(4))(2)(OH)(2)(.)8H(2)O, from Aghbar, Anti-Atlas, Morocco: first arsenate in the laueite mineral group

Meisser, Nicolas; Brugger, Joel; Krivovichev, Sergey V.; Armbruster, Thomas; Favreau, Georges
Fonte: E Schweizerbartsche Verlags Publicador: E Schweizerbartsche Verlags
Tipo: Artigo de Revista Científica
Publicado em //2012 EN
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Maghrebite, MgAl2(AsO4)2(OH)2•8H2O, is a new mineral occurring at the Aghbar open pit mine, Bou Azzer district, Anti-Atlas, Morocco. Maghrebite is associated with quartz, erythrite, arseniosiderite, wendwilsonite and cabalzarite, and results from the weathering of a Variscan hydrothermalCo-Ni-As-(Cu-U-Mo) vein. Maghrebite forms lozenge-shaped prismatic crystals up to 0.2 mm in length. It is colorless, translucent with vitreous luster. Dmeas is 2.60(1) g/cm3, Dcalc (crystal structure) 2.46 g/cm3. The new mineral is biaxial negative without pleochroism. Measured 2V angle is 87 (3)_; the refractive indices measured at 589 nm are: a ¼ 1.562 (2), b ¼ 1.574 (2), g ¼ 1.586 (2) with the following orientation a // b; b ^ c ¼ 28.8_ and g ^ a ¼ 25.5_. The empirical chemical formula is (Mg0.96Co0.01Ca0.01)P¼0.98(Al1.94Fe3þ 0:06)P¼2.00(As2.01Si0.01)P¼2.02H18.0O18.02. Maghrebite is triclinic, P_1, Z ¼ 1, with a ¼ 5.436 (2)A ° , b ¼ 10.500 (3)A ° , c¼7.075 (2)A ° , a ¼97.701 (7)_, b¼ 110.295 (5)_, g¼ 102.021 (6)_ and V¼ 361.0 (2)A ° 3. The six strongest lines in the X-ray powder diffraction pattern are [d in A ° (I)(hkl)]: 9.9 (100) (010), 6.4 (90) (001), 4.90 (80) (_101), 3.198 (60) (002), 2.885 (60) (_131) and 2.622 (60) (13-1). The structure was solved by direct methods and refined to R1¼0.045 on the basis of 1064 unique observed reflections. The structure is based upon [Al(AsO4)(OH)(H2O)3]_ layers parallel to (010) and interlinked by [Mg(H2O)6]þ octahedra. In addition...

The Free Trade Agreement Morocco-EU: a simulation of the impact on EU exports

Blanes, Jos?? Vicente; Milgram Baleix, Juliette
Fonte: Universidad de Granada. Departamento de Teor??a e Historia Econ??mica Publicador: Universidad de Granada. Departamento de Teor??a e Historia Econ??mica
Tipo: Relatório
ENG
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We analyse the effect due of the next FTA between Morocco and the EU on bilateral Moroccan imports. As our main contribution to the existing literature, we include in our gravity equation tariff data at the industry level. This allows to better estimate trade determinants and also makes possible to perform simulations of the tariff dismantling taking into account its different path for each industry and year. A complete tariff dismantling will double the average yearly trade growth observed in the years just before the transition period to the FTA begun. The average effect follows the tariff reduction schedule being greater at the beginning and at the end of the transition period. The effect is positive for all EU Member States but exports growth to Morocco is greater for Portugal, Greece, Slovakia, Lithuania and Spain and lower for Germany, Denmark, Finland, France and Sweden. By industries, the faster growth are predicted for Leather and leather products, Wood and wood products, Textiles and textile products, Rubber and plastic products and Pulp, paper an paper products and publishing and printing. Finally, we also find a positive effect of Moroccan immigration in the EU on bilateral trade.

Morocco: an emerging market

Aanitra, Mohammed
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: 99 p.
EN_US
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Approved for public release; distribution is unlimited; This thesis focuses on the evolution of the Moroccan economy. It also looks at how the implementation of the Structural Adjustment Program delayed decentralization and how its success led to privatization that resulted in improved performance of the economy. During the first decades after the independence, the Moroccan economy made considerable strides. The intervention of the government was essential and, as a result, the GDP averaged 5.6% in 1968- 72 and 7.5% in 1973-77. Investment expanded but savings and exports did not follow the same stream. However, since 1976, financial disequilibrium began to lessen growth and development. Decentralization was institutionalized to avoid misadministration, inefficiency, and to improve decision making. The purpose was to give more autonomy to the communes and more importance to the local market. However, the crisis emerged in 1981 and Morocco was forced to call IMF and launch the Structural Adjustment Program that lasted ten years. The success of the SAP resulted in the implementation of privatization. Actually, the performance of the economy is the best indicator that Morocco would play an important role in the region as interface between Europe...

Periphery under pressure : Morocco, Tunisia and the European Union's Mobility Partnership on migration

LIMAM, Mohamed; DEL SARTO, Raffaella A
Fonte: Instituto Universitário Europeu Publicador: Instituto Universitário Europeu
Tipo: Trabalho em Andamento Formato: application/pdf
EN
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Morocco and Tunisia resisted for some time pressure from the European Union to sign readmission agreements. These agreements co-opt states into the EU’s migration governance, and include a commitment to cooperation on the expulsion of unwanted migrants in Europe. Their recent acceptance of a largely unbalanced arrangement on the issue, the Mobility Partnership, came at a crucial time in the political history of these two countries. This paper shows that the EU exploited the extremely fragile and uncertain political context after the start of the uprisings, in order to push Morocco and Tunisia to sign up to the Mobility Partnership. What is more, the EU anchored the pursuit of what is a clear EU priority in a normative discourse, effectively linking cooperation on migration to EU support for democratisation in the ‘neighbourhood’, after the Arab upheavals. The article thus highlights a concrete case in which the EU engaged in realpolitik, using norms and values strategically. However, the normative framing of EU policies also contributed to the construction of an (allegedly) normative EU identity. Hence, the article challenges simplistic notions of 'normative power Europe'.

Humor and Moroccan Culture; Humor and Moroccan culture : a look into the hidden aspects of Moroccan culture that are necessary for understanding local humor., A look into the hidden aspects of Moroccan culture that are necessary for understanding local humor.

Helmke, Matthew
Fonte: Fès, Morocco : Matthew Helmke, 2007. Publicador: Fès, Morocco : Matthew Helmke, 2007.
Tipo: Livro Formato: application/pdf
ENG
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120 p.; 24 cm.; This book will explore and discuss the hidden aspects of Moroccan culture, things that people who grow up in Morocco seem to know inherently.; This project started as a language learning experiment. Matthew Helmke was sitting in a cafe with a Moroccan having a discussion in Moroccan Arabic. The friend told a joke and it was quickly discovered that vocabulary alone would not insure an understanding of humor. This prompted a question, "What did I miss?" In this book, Matthew Helmke explores the hidden aspects of Moroccan culture. These are the things that Moroccans know inherently, without being taught. The result is an intriguing look through the eyes of an American trying to make sense of Moroccan culture.; Table of Contents Dedication Acknowledgments Preface Being from Fez I'm not sure that is Arabic Always exceed expectations Don't give me advice Who are you going to trust? I won't let you buy that Respect is more important than truth There's always a twist Society's foundation Your words don't matter I'll do here what I did there Who should I believe in? Epilogue Final notes and thoughts Selected Bibliography Fonts used

Survival and Vigor of Eucalyptus Species in Morocco and Relation with Attacks of Phoracantha semipunctata Fabricius (Coleoptera: Cerambycidae)

Kissayi,Khadija
Fonte: Unidade de Silvicultura e Produtos Florestais Publicador: Unidade de Silvicultura e Produtos Florestais
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2011 EN
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37.23%
Although eucalyptus is regarded as having resistance to various insect pests and diseases, it can also suffer from heavy attacks by the eucalyptus longhorned borer, Phoracantha semipunctata (Fab.). In Morocco, this introduced pest was reported for the first time in Selouane, 9km from Nador, by Chararas in 1973. The species appears to have been rare until 1980-1981, but the exceptional drought occurring from 1980 to 1986 probably contributed to its installation and dispersal in Morocco. Nowadays this pest can be found widespread throughout the country, from Oujda in the east to the Atlantic coast and from Tangiers in the north to Agadir in the south. In this study we compare the resilience of different eucalyptus species from various arboretums within Morocco and the relation with attacks by the longhorned borer. The results reveal the existence of differences in adaptation of the different eucalyptus species according to their biotope and bark, influencing their susceptibility and resistance to attacks by P. semipunctata.