Adam Adey - Academia.edu (original) (raw)

Papers by Adam Adey

To estimate the growth of Tilapia (Oreochromis niloticus, L, 1758) at the level of the station of... more To estimate the growth of Tilapia (Oreochromis niloticus, L, 1758) at the level of the station of Deroua (Blessed Mellal / Morocco) and the influence of the environmental factors, an experimental study was led in 2007 on alevins raised at the level of two ponds (C 1 and C 2) the average depth of which is of 1,5m and a surface of 1500 m2. Ponds in question were empoisoned by alevins of 4g on average, with a density of 5individus / m². The obtained results(profits) show that the growth is positively influenced by the temperature, and has increase 1 %, every time we pass of a range of temperature to another superior among the following ranges (16 - 20°C), (21 - 24°C) and (25 - 28°C). The obtained average immediate growth was 1 %. Models of weight growth (Y= 77, 97 e0, 012t) and shelf space (Y= 62, 49 t0, 288) according to time and the relation size / weight (P = 0, 0392 L 2,763) were determined from the data of the essays made in 2005 and 2006 in the station of Deroua.

Abstract: To estimate the growth of Tilapia (Oreochromis niloticus, L, 1758) at the level of the ... more Abstract: To estimate the growth of Tilapia (Oreochromis niloticus, L, 1758) at the level of the station of Déroua (Blessed Mellal / Morocco) and the influence of the environmental factors, an experimental study was led in 2007 on alevins raised at the level of two ponds (C1 and C2) the average depth of which is of 1,5m and a surface of 1500 m2. Ponds in question were empoisoned by alevins of 4g on average, with a density of 5individus / m . The obtained results(profits) show that the growth is positively influenced by the temperature, and has increase 1 %, every time we pass of a range of temperature to another superior among the following ranges (16- 20°C), (21- 24°C) and (25- 28°C). The obtained average immediate

Morocco was equipped, since 2009, of a new development strategy and competitiveness of the halieu... more Morocco was equipped, since 2009, of a new development strategy and competitiveness of the halieutic sector. The development of this sector will make it possible to improve the mea existence by the means of the increase of the incomes, employment and the wellness. development of the aquacultural sector will contribute in addition to the food safety and the socio economic development of Morocco. The station of fish farming o part of the one of the stations which can play a lever for the development of this sector by the whole of the scientific studies conducted to its level. during the period of by Egypt in 2004 shows that during the various phases of breeding as well parents whom larvas show that the physico Oreochromis niloticus because all the registered values is meanwhile optimal of the species. These results can establish a database for the development of the aquacultural sector of this species.

The argan tree is part of the red list including 36 taxa considered as vulnerable in the catalog ... more The argan tree is part of the red list including 36 taxa considered as vulnerable in the catalog of rare, endangered or endemic vascular plants of Morocco [1]. As such, its conservation constitutes a real challenge. Intimately linked to the sub-Mediterranean vegetation layer, the argan tree organizes populations of capital importance for south-west as well as eastern Morocco, despite their great degree of openness. The present work focused on the study of the floristic series of this formation by insisting on the medicinal plants of the argan grove of West Beni-Snassen. In this project, the flora of the Beni- Snassen argan grove has been approached in several of its aspects (phytosociology, biodiversity, bioclimatology) [2,3], with special focus on the possible candidates for medicinal purposes. Thus, several surveys of the vegetation and the environment were carried out and led to the census of 60 species. This low number can be explained first, by the degree of dispersion of these...

Mediterranean Journal of Chemistry, 2021

Based on a previous ethnobotanical survey, Terminalia macroptera Guill. & Perr. was selected as i... more Based on a previous ethnobotanical survey, Terminalia macroptera Guill. & Perr. was selected as its heartwood is traditionally used for infections treatment and as mosquito repellent in the province of Ouaddai (Chad). In our course for a better knowledge of this medicinal plant which could be developed as phytomedicine, it is of great interest to subsequently characterize the chemical profile and bioactivities of this plant. In the present study we develop an Ultrahigh-performance liquid chromatography with diode array detection coupled to electrospray ionization and quadrupole time-of-flight (UHPLC-DAD-ESI/QTOF) technique to characterized on line potentially bioactive compounds. Thirteen compounds were identified in active extracts and fractions from Terminalia macroptera Guill. & Perr. heartwood, namely gallic and ellagic acids derivatives, 23-O-galloyl-terminolic acid, 23-O-galloyl arjunolic acid, 4,4’-dihydroxy-Z-stilbene-O-rutinoside and 3,5,4’-trihydroxy-Z-stilbene-O-rutinosid...

Physio-Géo, 2018

Apres la secheresse qui s'est declenchee au milieu des annees 1960, les precipitations dans l... more Apres la secheresse qui s'est declenchee au milieu des annees 1960, les precipitations dans les regions du Ouaddai et du Wadi-Fira, dans l'Est du Tchad, se sont ameliorees a partir des annees 1990. Dans le meme temps, l'impact humain sur les formations vegetales s'est amplifie avec l'arrivee massive de refugies et de deplaces. Les effets de ces facteurs sont jusqu'a present peu connus dans cette zone. Le present article etudie l'evolution des formations forestieres et preforestieres sur une periode de 23 ans (1987-2010). Cette analyse a ete realisee a l'aide des images satellitaires Landsat TM du 04/11/1987, et ETM+ du 22/10/2000 et du 02/10/2010. Cinq classes d'occupation du sol ont ete discriminees (Balanites purs, Acacias purs, Melanges, Sols nus et Roches a nu). Les proportions occupees par les trois premieres classes sont respectivement de 0,1 %, 5,2 % et 54,3 % en 1987, de 0,2 %, 2,4 % et 48,7 % en 2000, et de 0,96 %, 14,3 % et 61,7 % en 2010. Entre 1987 et 2000, un fort recul a ete enregistre pour les Acacias purs (-53,6 %) et les Melanges (-10,4 %). Mais une progression importante s'est manifestee pour les memes classes de 2000 a 2010 : +500 % pour les Acacias purs et +15,5 % pour les Melanges. La classe des Balanites purs n'a jamais atteint 1 % de la superficie totale. Des observations in situ ont en outre ete realisees a l'automne 2016 sur 240 placettes. La richesse floristique forestiere est de 30 especes. La densite moyenne est de 53 tiges/ha pour les Balanites purs, 35 tiges/ha pour les Acacias purs et 24 tiges/ha pour les Melanges. L'amelioration des precipitations a favorise l'installation des especes de moindre valeur calorifique et fourrageres comme Calotropis procera et Leptadenia pyrotechnica. Malgre le retour des precipitations, les ressources ligneuses du Ouaddai et du Wadi-Fira sont en recul, car soumises a une pression anthropique amplifiee par l'accroissement de population.

To estimate the growth of Tilapia (Oreochromis niloticus, L, 1758) at the level of the station of... more To estimate the growth of Tilapia (Oreochromis niloticus, L, 1758) at the level of the station of Deroua (Blessed Mellal / Morocco) and the influence of the environmental factors, an experimental study was led in 2007 on alevins raised at the level of two ponds (C 1 and C 2) the average depth of which is of 1,5m and a surface of 1500 m2. Ponds in question were empoisoned by alevins of 4g on average, with a density of 5individus / m². The obtained results(profits) show that the growth is positively influenced by the temperature, and has increase 1 %, every time we pass of a range of temperature to another superior among the following ranges (16 - 20°C), (21 - 24°C) and (25 - 28°C). The obtained average immediate growth was 1 %. Models of weight growth (Y= 77, 97 e0, 012t) and shelf space (Y= 62, 49 t0, 288) according to time and the relation size / weight (P = 0, 0392 L 2,763) were determined from the data of the essays made in 2005 and 2006 in the station of Deroua.

Abstract: To estimate the growth of Tilapia (Oreochromis niloticus, L, 1758) at the level of the ... more Abstract: To estimate the growth of Tilapia (Oreochromis niloticus, L, 1758) at the level of the station of Déroua (Blessed Mellal / Morocco) and the influence of the environmental factors, an experimental study was led in 2007 on alevins raised at the level of two ponds (C1 and C2) the average depth of which is of 1,5m and a surface of 1500 m2. Ponds in question were empoisoned by alevins of 4g on average, with a density of 5individus / m . The obtained results(profits) show that the growth is positively influenced by the temperature, and has increase 1 %, every time we pass of a range of temperature to another superior among the following ranges (16- 20°C), (21- 24°C) and (25- 28°C). The obtained average immediate

Morocco was equipped, since 2009, of a new development strategy and competitiveness of the halieu... more Morocco was equipped, since 2009, of a new development strategy and competitiveness of the halieutic sector. The development of this sector will make it possible to improve the mea existence by the means of the increase of the incomes, employment and the wellness. development of the aquacultural sector will contribute in addition to the food safety and the socio economic development of Morocco. The station of fish farming o part of the one of the stations which can play a lever for the development of this sector by the whole of the scientific studies conducted to its level. during the period of by Egypt in 2004 shows that during the various phases of breeding as well parents whom larvas show that the physico Oreochromis niloticus because all the registered values is meanwhile optimal of the species. These results can establish a database for the development of the aquacultural sector of this species.

The argan tree is part of the red list including 36 taxa considered as vulnerable in the catalog ... more The argan tree is part of the red list including 36 taxa considered as vulnerable in the catalog of rare, endangered or endemic vascular plants of Morocco [1]. As such, its conservation constitutes a real challenge. Intimately linked to the sub-Mediterranean vegetation layer, the argan tree organizes populations of capital importance for south-west as well as eastern Morocco, despite their great degree of openness. The present work focused on the study of the floristic series of this formation by insisting on the medicinal plants of the argan grove of West Beni-Snassen. In this project, the flora of the Beni- Snassen argan grove has been approached in several of its aspects (phytosociology, biodiversity, bioclimatology) [2,3], with special focus on the possible candidates for medicinal purposes. Thus, several surveys of the vegetation and the environment were carried out and led to the census of 60 species. This low number can be explained first, by the degree of dispersion of these...

Mediterranean Journal of Chemistry, 2021

Based on a previous ethnobotanical survey, Terminalia macroptera Guill. & Perr. was selected as i... more Based on a previous ethnobotanical survey, Terminalia macroptera Guill. & Perr. was selected as its heartwood is traditionally used for infections treatment and as mosquito repellent in the province of Ouaddai (Chad). In our course for a better knowledge of this medicinal plant which could be developed as phytomedicine, it is of great interest to subsequently characterize the chemical profile and bioactivities of this plant. In the present study we develop an Ultrahigh-performance liquid chromatography with diode array detection coupled to electrospray ionization and quadrupole time-of-flight (UHPLC-DAD-ESI/QTOF) technique to characterized on line potentially bioactive compounds. Thirteen compounds were identified in active extracts and fractions from Terminalia macroptera Guill. & Perr. heartwood, namely gallic and ellagic acids derivatives, 23-O-galloyl-terminolic acid, 23-O-galloyl arjunolic acid, 4,4’-dihydroxy-Z-stilbene-O-rutinoside and 3,5,4’-trihydroxy-Z-stilbene-O-rutinosid...

Physio-Géo, 2018

Apres la secheresse qui s'est declenchee au milieu des annees 1960, les precipitations dans l... more Apres la secheresse qui s'est declenchee au milieu des annees 1960, les precipitations dans les regions du Ouaddai et du Wadi-Fira, dans l'Est du Tchad, se sont ameliorees a partir des annees 1990. Dans le meme temps, l'impact humain sur les formations vegetales s'est amplifie avec l'arrivee massive de refugies et de deplaces. Les effets de ces facteurs sont jusqu'a present peu connus dans cette zone. Le present article etudie l'evolution des formations forestieres et preforestieres sur une periode de 23 ans (1987-2010). Cette analyse a ete realisee a l'aide des images satellitaires Landsat TM du 04/11/1987, et ETM+ du 22/10/2000 et du 02/10/2010. Cinq classes d'occupation du sol ont ete discriminees (Balanites purs, Acacias purs, Melanges, Sols nus et Roches a nu). Les proportions occupees par les trois premieres classes sont respectivement de 0,1 %, 5,2 % et 54,3 % en 1987, de 0,2 %, 2,4 % et 48,7 % en 2000, et de 0,96 %, 14,3 % et 61,7 % en 2010. Entre 1987 et 2000, un fort recul a ete enregistre pour les Acacias purs (-53,6 %) et les Melanges (-10,4 %). Mais une progression importante s'est manifestee pour les memes classes de 2000 a 2010 : +500 % pour les Acacias purs et +15,5 % pour les Melanges. La classe des Balanites purs n'a jamais atteint 1 % de la superficie totale. Des observations in situ ont en outre ete realisees a l'automne 2016 sur 240 placettes. La richesse floristique forestiere est de 30 especes. La densite moyenne est de 53 tiges/ha pour les Balanites purs, 35 tiges/ha pour les Acacias purs et 24 tiges/ha pour les Melanges. L'amelioration des precipitations a favorise l'installation des especes de moindre valeur calorifique et fourrageres comme Calotropis procera et Leptadenia pyrotechnica. Malgre le retour des precipitations, les ressources ligneuses du Ouaddai et du Wadi-Fira sont en recul, car soumises a une pression anthropique amplifiee par l'accroissement de population.