scholarly journals Characterizing the spatiotemporal distribution of meteorological drought as a response to climate variability: The case of rift valley lakes basin of Ethiopia

2019 ◽  
Vol 26 ◽  
pp. 100237 ◽  
Author(s):  
Birhane Gebrehiwot Tesfamariam ◽  
Berhan Gessesse ◽  
Farid Melgani
Hydrobiologia ◽  
1994 ◽  
Vol 288 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Elizabeth Kebede ◽  
Zinabu G. Mariam ◽  
Ingemar Ahlgren

2021 ◽  
Vol 36 ◽  
pp. 100857
Author(s):  
Mathew Herrnegger ◽  
Gabriel Stecher ◽  
Christian Schwatke ◽  
Luke Olang

1981 ◽  
Vol 18 (1) ◽  
pp. 157 ◽  
Author(s):  
Jeffrey L. Lincer ◽  
Deena Zalkind ◽  
Leslie H. Brown ◽  
John Hopcraft

1978 ◽  
Vol 68 (2) ◽  
pp. 299-305 ◽  
Author(s):  
G. K. Fuller

AbstractGlossina spp. were collected in south-western Ethiopia and were found to have a continuous distribution from the Sobat River Basin to the southern Rift Valley lakes of Chamo and Abaya. Their limits to the north and east of this range was not determined. Along the Omo River, Glossina inhabit a continuous band from 20 km above Lake Rudolf to at least as far as Abelti, 167 km south-west of Addis Ababa. The species collected were G. pallidipes Aust., G. fuscipes Newst., G. morsitans submorsitans Newst. and G. Iongipennis Corti. The ratio and numbers of G. pallidipes and G. fuscipes suggest a relationship between the latter and the number of hippopotamus along the Omo River. Both G. pallidipes and G. Iongipennis were caught biting at night.


2008 ◽  
Vol 54 ◽  
pp. 137-159
Author(s):  
Henry Elderfield ◽  
Edward A. Boyle

John Edmond was a geochemist the unifying theme of whose research was a quantitative understanding of the processes involved in the transfer of the chemical elements into and out of the oceans; in short, what controls ocean chemistry. He achieved this through oceanographic explorations sampling ocean waters for rare metals and explorations of hot springs on the deep sea floor, rivers from the Amazon to Siberia, and the rift valley lakes of Africa. This accompanied a strong background in chemistry and an almost reverent recognition of the value of data. John challenged established paradigms and pioneered developments in element and isotope systematics as applied to geochemical processes. He will alsobe remembered for his enthusiasm, his insight, his honesty, and his defence of anyone or any group he felt was badly treated.


2019 ◽  
Vol 12 (1) ◽  
pp. 90 ◽  
Author(s):  
Nuntikorn Kitratporn ◽  
Wataru Takeuchi

In Thailand, crop depredation by wild elephants intensified, impacting the quality of life of local communities and long-term conservation of wild elephant populations. Yet, fewer studies explore the landscape-scale spatiotemporal distribution of human–elephant conflict (HEC). In this study, we modeled the potential HEC distribution in ten provinces adjacent to protected areas in Eastern Thailand from 2009 to 2018. We applied the time-calibrated maximum entropy method and modeled the relative probability of HEC in varying scenarios of resource suitability and direct human pressure in wet and dry seasons. The environmental dynamic over the 10-year period was represented by remotely sensed vegetation, meteorological drought, topographical, and human-pressure data. Results were categorized in HEC zones using the proposed two-dimensional conflict matrix. Logistic regression was applied to determine the relevant contribution of each scenario. The results showed that although HEC probability varied across seasons, overall HEC-prone areas expanded in all provinces from 2009 to 2018. The largest HEC areas were estimated during dry seasons with Chantaburi, Chonburi, Nakhon Ratchasima, and Rayong provinces being the HEC hotspots.However, the HEC potential was reduced during severe and prolonged droughts caused by El Nino events. Direct human pressure caused a more gradual increase of HEC probability around protected areas. On the other hand, resource suitability showed large variation across seasons. We recommend zone-dependent management actions towards a fine-balance between human development and the conservation of wild elephants.


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