Search Results for : species
Contribution to the study of coastal floristry biodiversity in Oran
According to Eurostat report data (EU Statistical Office) the enormous impact of tourism on ecosystems would be one of the most important causes of biodiversity degradation in the Mediterranean countries. The Red List of IUCN (International Union for Conservation of Nature) records today some 16120 endangered species in the world. In this context we conducted […]
Pollen morphology of Convolvulus L. populations in Markazi Province, Iran
Pollen morphology has been extremely useful in clarifying systematic relationships within the plant taxa. Moreover, palynology of the species and subspecies could have taxonomic value as the supporting evidence to the morphological and phylogenetic studies. Palynological studies of 12 collected Convolvulus populations from Markazi Province of Iran were done using light and scanning electron microscopy […]
Antagonistic effect of Trichoderma harzianum against Phytophthora infestans in the North-west of Algeria
The oomycete, Phytophthora infestans is considered one of the most important pathogens of potatoes and tomatoes worldwide. A total of 38 Phytophthora infestans isolates were obtained from leaves, tubers and stems of infected crops of potato and tomato in different regions of the North West of Algeria in 2010, 2011 and 2012. Based on morphological […]
Phytosociological attributes of weeds in lowland paddy at Talata Mafara, Sudan Savannah, Nigeria
Study was conducted to assess the phytosociological studies of weed species in paddy at research farm of the irrigation research station, Institute for Agricultural Research (I.A.R), Ahmadu Bello University, Zaria located at Bakolori irrigation scheme Talata Mafara, (Zamfara) State, in the Sudan Savannah ecological zone of Nigeria during 2012 and 2013 wet seasons, A total […]
Determining frequency of ionic, type, faciesand water contaminants of Karoon river
The changes in river ecosystem and fading away the species of organisms lead to risk of dearth of high quality water resources and to harmful impacts resulting from using contaminant waters on human beings. In order that the changes in solutes and qualitative parameters of these valuable resources to be studied properly, there should be […]
Dorcatherium from the dhok bun ameer khatoon, chinji formation, lower siwalik hills of Pakistan
Several new fossil specimens of Dorcatherium have been found and described from the Chinji Formation near Dhok Bun Ameer Khatoon (DBAK). The material comprises upper and lower dentitions and presents the data which is new, also it provide us further information about the distribution of two species Dorcatherium majus and Dorcatherium minus from the Lower […]
Ethnobotanical survey of the medicinal plants in the central mountains (North-South) in Jordan
An ethnobotanical survey for the wild medicinal plants in the central high mountains extending from northern to central Jordan has been carried out. A special questionnaire is prepared to test for the medicinal uses of the local wild medicinal plants in the study area. The information such as the Arabic local name, parts used for […]
A review on morphological characterization, variation and distribution pattern of Eurema butterflies of Peninsular Malaysia
Seven species of Eurema butterflies comprised of 263 adult individuals collected from various sampling sites of Peninsular Malaysia were identified and diagnosed based on their morphological characteristics and variation pattern. The result from diagnosis revealed that the main morphological characteristics that differentiated between the members of Eurema butterflies are the number of cell spots in […]
The influence of climate changes on the hydrobionts: a review
Climate and its changes have a direct impact on the development of the different hydrobiont species. These effects on aquatic organisms could be either positive or negative. Every species adapts specifically to natural periodic and seasonal changes, however, the response to unexpected climate changes is inconsistent and not always adequate. Climate-related factors could influence food […]
Toxicological impact of a mimetic estrogen specie: mancozeb on a tadpoles of the green frog (Rana saharica)
The presence in the environment of chemicals with hormone-mimetic properties generates concerns about their effects on aquatic organisms. Due to their estrogenic activity, they are part of the chemical compounds whose concentration level in the environment isn’t monitored. The estrogenic substances can be of natural origin, but also of synthetic origin such as certain pesticides. […]