Research Explorer

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Researcher

Tesfaalem-Ghebreyohannes Asfaha

Publications & Research Data

Awards & Distinctions

78 Results

2024

Impact of the Tigray War on farming : plight and resilience

Jan NyssenTesfaalem-Ghebreyohannes AsfahaEmnet NegashHailemariam Meaza GebregergsZbelo Tesfamariam WelemaramAmaury FranklKiara HaegemanBert Van SchaeybroeckAlem ReddaFetien Abay et al.

Bookchapter in Tigray : war in a digital black hole

War-induced land degradation mapped using ground and remote sensing data : the case of Dogu’a Tembien and Enderta districts in Tigray (Ethiopia)

Tesfaalem-Ghebreyohannes AsfahaJan NyssenEmnet NegashHailemariam Meaza GebregergsZbelo Tesfamariam WelemaramSofie AnnysAmaury Frankl

2023

The status of small-scale farming during the Tigray War (Ethiopia) : evidence on the ground

Jan NyssenEmnet NegashZbelo Tesfamariam WelemaramBiadgilgn Demissie MullawAlem ReddaFetien AbayHailemariam Meaza GebregergsAmaury FranklBert Van SchaeybroeckSofie Annys et al.

2022

Challenges and resilience of an indigenous farming system during wartime (Tigray, North Ethiopia)

Tesfaalem-Ghebreyohannes AsfahaJan NyssenEmnet NegashHailemariam Meaza GebregergsZbelo Tesfamariam WelemaramAmaury FranklBiadgilgn Demissie MullawBert Van SchaeybroeckAlem ReddaSofie Annys et al.

A1 Journal Article in AGRONOMY FOR SUSTAINABLE DEVELOPMENT

Landscape changes in the semi-closed Raya agricultural graben floor of northern Ethiopia

Biadgilgn Demissie MullawAlemework AmsaluZbelo Tesfamariam WelemaramJan NyssenHailemariam Meaza GebregergsTesfaalem-Ghebreyohannes AsfahaAmanuel ZenebeCarlo GregorettiVeerle Van Eetvelde

A2 Journal Article in EARTH SYSTEMS AND ENVIRONMENT

Spatially explicit dataset on crop status of 161 farm plots in Tigray (20-30 August 2021)

Tesfaalem-Ghebreyohannes AsfahaJan NyssenEmnet NegashHailemariam Meaza GebregergsZbelo Tesfamariam Welemaram

Spatially explicit dataset on crop status of 262 farm plots in Tigray (24-29 August 2022)

Tesfaalem-Ghebreyohannes AsfahaHailemariam Meaza GebregergsZbelo Tesfamariam WelemaramEmnet NegashJan Nyssen

2020

Flood-based farming as affected by hydrological deficit in the semiarid lowlands of Northern Ethiopia

Emnet NegashJan NyssenG. GebresamuelT. EmbayeA. NguvuluHailemariam Meaza GebregergsM. GebrehiwotBiadgilgn Demissie MullawTesfaalem-Ghebreyohannes AsfahaA. Zenebe

Impact of headwater hydrological deficit on the downstream flood-based farming system in Northern Ethiopia

Emnet NegashGirmay GebresamuelTesfa-Alem EmbayeAlick NguvuluHailemariam Meaza GebregergsMisgina GebrehiwotBiadgilgn Demissie MullawTesfaalem-Ghebreyohannes AsfahaJan NyssenAmanuel Zenebe

A1 Journal Article in IRRIGATION AND DRAINAGE

Spatial distribution and livelihood effects of debris cones at the western Afar Rift Valley margin, northern Ethiopia

Hailemariam Meaza GebregergsBelete FentayeTesfaalem-Ghebreyohannes AsfahaJean PoesenAmaury FranklBiadgilgn Demissie MullawAmanuel ZenebeVeerle Van EetveldeZbelo TesfamariamJozef Deckers et al.

A1 Journal Article in NORSK GEOGRAFISK TIDSSKRIFT-NORWEGIAN JOURNAL OF GEOGRAPHY

The Zeyi cave geosite in Northern Ethiopia

Jan NyssenMeheretu YonasSofie AnnysTesfaalem-Ghebreyohannes AsfahaWolbert SmidtKiros WelegerimaSeifu GebreselassieAndrea SembroniFrancesco DramisCamille Ek et al.

A1 Journal Article in GEOHERITAGE

2019

Agricultural investments and land use change in the Raya graben

Zbelo Tesfamariam WelemaramBirhanu Biruk

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

At the edge between Ethiopian plateau and Rift Valley

Jan NyssenHailemariam Meaza GebregergsZbelo Tesfamariam Welemaram

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Changing landscapes in the Aba’ala graben bottom

Zbelo Tesfamariam Welemaram

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Conflicts for water and grazing land in the Kalla graben

Zbelo Tesfamariam Welemaram

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Cropping systems in the Raya uplands

Amaury FranklMiro Jacob

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Executive summary: Land, water, people and landscapes in north Ethiopia’s grabens

Biadgilgn Demissie MullawJan NyssenTesfaalem-Ghebreyohannes Asfaha

Editorial material

Expansion of small-scale irrigation along a dam-regulated river

Sofie AnnysTesfaalem-Ghebreyohannes AsfahaEnyew AdgoSteven Van PasselJoost DesseinJan Nyssen

Kiilbati Ethiopiah Graben baaxoo lee ummata kee baaxoo Gon

Biadgilgn Demissie MullawJan NyssenTesfaalem-Ghebreyohannes Asfaha

Editorial material

Land cover in relation to stream dynamics in the Raya graben

Biadgilgn Demissie Mullaw

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Land use and suitability for rainfed agriculture

Amanuel ZenebeAtkilt GirmaEtefa GuyassaTesfaalem-Ghebreyohannes AsfahaR Neil MunroMitiku HaileJean PoesenJozef DeckersJan Nyssen

Bookchapter in Geo-trekking in Ethiopia's tropical mountains : the Dogu'a Tembien District

Land, water, people and landscapes in north Ethiopia’s grabens

Landscape dynamics and major drivers in the Raya graben bottom

Biadgilgn Demissie MullawAlemework Amsalu

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

On top of the escarpment : the afro-alpine environment

Hanne HendrickxMiro Jacob

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

River sedimentation at bridges in the Raya graben

Biadgilgn Demissie Mullaw

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Rocky deposits on the foot of the escarpment

Hailemariam Meaza GebregergsBelete Fantaye

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Salinity conditions in the Raya graben

Hailemariam Meaza GebregergsLaurens Hermans

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Soil erosion around Lake Ashenge in historical times

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Successful land rehabilitation on the escarpment

Tesfaalem-Ghebreyohannes Asfaha

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

Temporal meandering rivers in the Raya graben bottom

Biadgilgn Demissie Mullaw

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

The 'Graben' TEAM project

Jan NyssenVeerle Van EetveldeAmanuel ZenebeSeppe DeckersKelemework TafereJean Poesen

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

The fertiliser excess crisis in the Raya graben and beyond (2012-2016)

Jan NyssenBirhanu Biruk

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

The floods from the escarpment

Tesfaalem-Ghebreyohannes Asfaha

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

The water of the Aba’ala graben

Hailemariam Meaza Gebregergs

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

The waters of the Raya graben

Hailemariam Meaza Gebregergs

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

The Zeyi cave in north Ethiopia and potential for geotourism

Jan NyssenSofie AnnysMeheretu YonasTesfaalem-Ghebreyohannes AsfahaWolbert SmidtSeifu GebreselassieFrancesco DramisCamille EkDavid Causer

Unequal land access or equity : impacts on land degradation around Lake Ashenge

Jan NyssenAnthony Denaeyer

Bookchapter in Land, water, people and landscapes in north Ethiopia’s grabens

የሰሜን ኢትዮጵያ ገራበኖች (Grabens) መሬት፣ ውሃ፣ ህዝብና ገፀ-ምድር

Biadgilgn Demissie MullawJan NyssenTesfaalem-Ghebreyohannes Asfaha

Editorial material

ጽንቁቕ መጠቓለሊ፡ መሬት፣ ማይ፣ ህዝቢን ገጸ-ምድሪን ግራበናት (Grabens) ሰሜን ኢትዮጵያ

Biadgilgn Demissie MullawJan NyssenTesfaalem-Ghebreyohannes Asfaha

Editorial material

2018

Causes of landscape change in the arid and semi-arid environments of northern Ethiopia

Zbelo Tesfamariam WelemaramJan NyssenTesfaalem-Ghebreyohannes AsfahaAmaury FranklKelemework TafereAmanuel ZenebeJean PoesenJozef DeckersVeerle Van Eetvelde

Driving forces of landscape change in the marginal grabens of Northern Ethiopia

Zbelo TesfamariamJan NyssenTesfaalem-Ghebreyohannes AsfahaAmanuel ZenebeKelemework TafereVeerle Van Eetvelde

Effect of geomorphic processes on the livelihoods of poor farmers along the marginal grabens of northern Ethiopia

Hailemariam Meaza GebregergsBelete FentayeJan NyssenBiadgilgn Demissie MullawTesfaalem-Ghebreyohannes Asfaha

Geographical determinants of the fertiliser black market in North Ethiopia

Jan NyssenZbelo Tesfamariam WelemaramBirhanu BirukBiadgilgn Demissie MullawTesfaalem-Ghebreyohannes AsfahaHailemariam Meaza GebregergsJean PoesenVeerle Van EetveldeAmanuel ZenebeJozef Deckers et al.

Impacts of the hydropower-controlled Tana-Beles interbasin water transfer on downstream rural livelihoods (northwest Ethiopia)

Sofie AnnysEnyew AdgoTesfaalem-Ghebreyohannes AsfahaSteven Van PasselJoost DesseinJan Nyssen

Long-term landscape changes in relation to rainfall variability and natural resources management in the northern Ethiopian highlands

Tesfaalem-Ghebreyohannes AsfahaMitiku HaileAmaury FranklAmanuel AbrahaJan Nyssen

Recovery and use of aerial photographs of Ethiopia in 1935-1941

Jan NyssenEtefa Guyassa DinssaTesfaalem-Ghebreyohannes AsfahaMartijn DebeverSultan MohamedGezahegne GebremeskelJan KropáčekPeter ScullGordon PetrieMitiku Haile et al.

Regreening of the northern Ethiopian mountains : effects on flooding and on water balance

Tesfaalem-Ghebreyohannes AsfahaMichiel De MeyereAmaury FranklMitiku HaileJan Nyssen

A2 Journal Article in AFRIKA FOCUS

The impact of settlement history and expansion on landscape dynamics in Northern Ethiopia

Zbelo TesfamariamJan NyssenTesfaalem-Ghebreyohannes AsfahaAmanuel ZenebeKelemework TafereVeerle Van Eetvelde

2017

Effects of land deals on peak discharge and sediment transport in the catchments around the Grand Ethiopian Renaissance Dam

Dereje Teklemariam GebremeskelSil LanckrietHossein AzadiTesfaalem-Ghebreyohannes AsfahaMitiku HaileFrank WitloxJan Nyssen

A1 Journal Article in LAND DEGRADATION & DEVELOPMENT

Hydrological behavior of the conﬁned Aba’ala graben along the western margin of the Danakil depression, Northern Ethiopia

Hailemariam MeazaAmaury FranklJean PoesenAmanuel ZenebeVeerle Van EetveldeBiadgilgn Demissie MullawTesfaalem-Ghebreyohannes AsfahaJan Nyssen

Land deals in western Ethiopia put the Grand Ethiopian Renaissance Dam at risk of siltation

Dereje Teklemariam GebremeskelTesfaalem-Ghebreyohannes AsfahaSil LanckrietHossein AzadiMitiku HaileFrank WitloxJan Nyssen

Water budget variability in Aba’ala marginal graben of Northern Ethiopia

Hailemariam Meaza GebregergsAmaury FranklJean PoesenAmanuel ZenebeVeerle Van EetveldeBiadgilgn Demissie MullawTesfaalem-Ghebreyohannes AsfahaSeppe DeckersDirk RaesJan Nyssen

2016

Catchment rehabilitation and hydro-geomorphic characteristics of mountain streams in the western Rift Valley escarpment of Northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklMitiku HaileJan Nyssen

A1 Journal Article in LAND DEGRADATION & DEVELOPMENT

EthioTrees : ecosystem service valuation in the Tembien Highlands (North Ethiopia)

Sil LanckrietMiro JacobKoen LepoutreTasha MoensTesfaalem-Ghebreyohannes AsfahaSeifu GebreselassieDereje Teklemariam GebremeskelJan Nyssen

Land use and cover dynamics since 1964 in the Afro-Alpine vegetation belt : Lib Amba mountain in North Ethiopia

Miro JacobLiên RomeynsAmaury FranklTesfaalem-Ghebreyohannes AsfahaHans BeeckmanJan Nyssen

A1 Journal Article in LAND DEGRADATION & DEVELOPMENT

Rehabilitation of steep tropical mountains and its implication on peak discharge and bed load dynamics : the case of western Rift Valley escarpment of Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklAmanuel ZenebeMitiku HaileJan Nyssen

Sediment in alluvial and lacustrine debris fans as an indicator for land degradation around Lake Ashenge (Ethiopia)

Sil LanckrietTesfaalem-Ghebreyohannes AsfahaAmaury FranklAmanuel ZenebeJan Nyssen

A1 Journal Article in LAND DEGRADATION & DEVELOPMENT

Transhumance and landscape dynamics in northern Ethiopia

Zbelo Tesfamariam WelemaramJan NyssenTesfaalem-Ghebreyohannes AsfahaKelemework TafereVeerle Van Eetvelde

Water balance in Aba’ala marginal graben along the western margin of Northern Ethiopia

Hailemariam Meaza GebregergsAmaury FranklJean PoesenAmanuel ZenebeVeerle Van EetveldeBiadgilgn Demissie MullawTesfaalem-Ghebreyohannes AsfahaJan Nyssen

2015

Bed-load sediment fluxes in steep mountain catchments as fingerprints of catchment rehabilitation : the case of western Rift Valley escarpment of North Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklMitiku HaileAmanuel AbrahaJan Nyssen

Braided river dynamics in relation to floods in the Raya graben (northern Ethiopia)

Biadgilgn Demissie MullawAmaury FranklTesfaalem-Ghebreyohannes AsfahaMitiku HaileJan Nyssen

Determinants of peak discharge in steep mountain catchments: case of the Rift Valley escarpment of Northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklMitiku HaileAmanuel ZenebeJan Nyssen

A1 Journal Article in JOURNAL OF HYDROLOGY

Dynamics of tropical mountain stream channels in response to spatial variability of rainfall and to land cover changes: the case of the Ethiopia Rift Valley escarpment

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklM HaileA ZenebeJan Nyssen

Effects of steep mountain rehabilitation on peak discharge variability : the case of western Rift Valley escarpment of Northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklMitiku HaileAmanuel AbrahaJan Nyssen

Effects of transnational land deals on peak discharge and sediment transport in the catchments around the Grand Ethiopian Renaissance Dam

Dereje Teklemariam GebremeskelJan NyssenHossein AzadiSil LanckrietTesfaalem-Ghebreyohannes AsfahaBiadgilgn Demissie MullawMitiku HaileFrank Witlox

Hydrogeomorphology in Ethiopia as impacted by human interventions

Jan NyssenTesfaalem-Ghebreyohannes AsfahaSil LanckrietM AbateBiadgilgn Demissie MullawEtefa Guyassa DinssaElise MonsieursHenok Kassa TegegneNelles ScholiersWouter Lannoeye et al.

Mountain stream dynamics as impacted by rainfall variability and land cover change in the western Rift Valley escarpment of Northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaJan NyssenMitiku HaileAmaury Frankl

Peak discharges in steep mountain catchments in relation to rainfall variability, vegetation cover and geomorphology of the Rift Valley Escarpment of Northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklMitiku HaileAmanuel AbrahaElise MonsieursJan Nyssen

Runoff response of reforesting tropical mountain catchments: the case of western Rift Valley escarpment of Northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaJan NyssenM HaileA ZenebeAmaury Frankl

Sediment flux dynamics as fingerprints of catchment rehabilitation : the case of western Rift Valley escarpment of northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklMitiku HaileAmanuel ZenebeJan Nyssen

A1 Journal Article in GEOMORPHOLOGY

Sediment supply to the semi-endorheic Raya Graben (Northern Ethiopia)

Biadgilgn Demissie MullawAmaury FranklMiro JacobTesfaalem-Ghebreyohannes AsfahaMitiku HaileJan Nyssen

2014

Spatial variability of mountain stream dynamics along the Ethiopian Rift Valley escarpment

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklAmanuel ZenebeMitiku HaileJan Nyssen

The impact of reforestation on discharge and sediment fluxes in drylands : long-term evidences from the Western Rift Valley Escarpment (Northern Ethiopia)

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklAmanuel ZenebeMitiku HaileJan Nyssen

The role of land rehabilitation by landless farmers and impacts on soil properties in Hawzen, North Ethiopia

Hailemariam Meaza GebregergsGirmay GebresamuelTesfaalem-Ghebreyohannes AsfahaAmaury Frankl

2013

An integrated analysis of mountain stream dynamics, rainfall variability and land use/cover change in the western Rift Valley escarpment of northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklA ZenebeMitiku HaileJan Nyssen

Catchment rehabilitation and hydro-geomorphic characteristics of mountain streams in the western Rift Valley escarpment of Northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklMitiku HaileJan Nyssen

The hydro-geomorphic response of mountain streams to recent catchment rehabilitation in the western Rift Valley escarpment of northern Ethiopia

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklMitiku HaileJan Nyssen

2011

Mountain stream dynamics as impacted by land cover/use change and rainfall variability in the northern Ethiopian highlands

Tesfaalem-Ghebreyohannes AsfahaAmaury FranklMitiku HaileJan Nyssen