Maass, Brigitte L.

[["dc.bibliographiccitation.firstpage","113"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","International Journal of Sustainable Development & World Ecology"],["dc.bibliographiccitation.lastpage","130"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Dalle, Gemedo"],["dc.contributor.author","Isselstein, Johannes"],["dc.contributor.author","Maass, Brigitte L."],["dc.date.accessioned","2017-09-07T11:46:38Z"],["dc.date.available","2017-09-07T11:46:38Z"],["dc.date.issued","2006"],["dc.description.abstract","Indigenous ecological knowledge (IEK) of Borana pastoralists on strategies of sustainable resource utilization, forage species, ecological interactions, rangeland condition and trend was documented using discussions, a semi-structured questionnaire survey and analytical workshops. Traditional strategies of rangeland and water management were described and the most important forage species identified. Pastoralists' perceptions were compared across age, gender and site. There was a positive correlation between pastoralists' preference ranking of forage species and crude protein content of the species. IEK of men and women was complementary. The process of rangeland degradation was described as shortage of grass and decrease in density and frequency of highly palatable grass species, leading to low milk production and reduced conception rates in cows. The results confirmed that the IEK of these pastoralists could still provide the basis for sustainable resource utilization and rangeland rehabilitation. However, the young generation in the area had not only limited knowledge but also showed less interest to learn and apply the traditional resource management strategies. Therefore, there is high need to perpetuate, document and use this IEK for sustainable development. On the other hand, shortage of forage resources as a result of rangeland shrinkage (leading to rangeland degradation and woody plants encroachment), less application of IEK, the gap between traditional and formal systems, and trends of disobeying traditional rules and regulations were identified as current challenges for the Borana pastoralists."],["dc.identifier.doi","10.1080/13504500609469666"],["dc.identifier.gro","3149225"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5881"],["dc.language.iso","en"],["dc.notes.intern","Isselstein Crossref Import"],["dc.notes.status","fcwi"],["dc.notes.submitter","chake"],["dc.relation.issn","1350-4509"],["dc.title","Indigenous ecological knowledge of Borana pastoralists in southern Ethiopia and current challenges"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","237"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","African Journal of Ecology"],["dc.bibliographiccitation.lastpage","246"],["dc.bibliographiccitation.volume","44"],["dc.contributor.author","Dalle, Gemedo"],["dc.contributor.author","Maass, Brigitte L."],["dc.contributor.author","Isselstein, Johannes"],["dc.date.accessioned","2017-09-07T11:46:38Z"],["dc.date.available","2017-09-07T11:46:38Z"],["dc.date.issued","2006"],["dc.description.abstract","Encroachment of woody plants has been among the major threats to the livelihoods of Borana pastoralists and their ecosystem. An approach that integrated vegetation survey and pastoralists’ perception was followed to study the impacts of encroachment of woody plants in the Borana lowlands, Ethiopia. Density of woody species was determined in 192 plots of 500 m2. Canopy cover of woody plants was estimated in 123 quadrates of 400 m2. Pastoralists’ perception was assessed through group discussions and a semi‐structured questionnaire. Results showed that plant density was 3014 woody plants ha−1. Cover of woody plants was 52%, indicating an increasing trend from ≤40% cover reported in the early 1990s. It was concluded that the increase of woody plants density and cover has crossed the critical threshold and has entered into the encroached condition. Principal components analysis (PCA) and redundancy analysis (RDA) also showed that woody plants were negatively correlated with herbaceous biomass. Commiphora africana, Acacia melliphera, A. drepanolobium, A. brevispica and Lannea rivae were among the dominant encroachers. RDA revealed that soil nutrients were positively correlated with woody plants density and cover. The pastoralists perceived that encroachment of woody plants had decreased the production of their grazingland. A ban on fire was perceived as the major factor that caused encroachment of woody plants. Re‐utilization of fire and strengthening of traditional rangeland management strategies are recommended."],["dc.identifier.doi","10.1111/j.1365-2028.2006.00638.x"],["dc.identifier.gro","3149215"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5870"],["dc.language.iso","en"],["dc.notes.intern","Isselstein Crossref Import"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0141-6707"],["dc.title","Encroachment of woody plants and its impact on pastoral livestock production in the Borana lowlands, southern Oromia, Ethiopia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Ethiopian Journal of Science"],["dc.bibliographiccitation.lastpage","12"],["dc.bibliographiccitation.volume","37"],["dc.contributor.author","Dalle, Gemedo"],["dc.contributor.author","Maass, Brigitte L."],["dc.contributor.author","Isselstein, Johannes"],["dc.date.accessioned","2017-09-07T11:51:20Z"],["dc.date.available","2017-09-07T11:51:20Z"],["dc.date.issued","2014"],["dc.description.abstract","Topography, climate and soil are the three important environmental abiotic factors that affect vegetation composition in rangelands. Determination of environmental factors that are responsible for the spatial distribution and abundance of vegetation is useful in ecological restorations and grazing land use planning. This study was conducted in the Borana lowlands to quantitatively explore relationships between vegetation composition and abiotic environmental factors. A combination of stratification and systematic random sampling techniques were employed to collect vegetation and environmental data in 58 plots of 500 m2 size. Redundancy Analysis (RDA) and Canonical Correspondence Analysis (CCA) were used to detect patterns of vegetation variation that were explained by the assessed environmental variables. CCA and RDA ordination diagrams revealed that the composition and distribution of both woody and herbaceous vegetation were mainly determined by altitude, soil pH, calcium, cation exchange capacity and magnesium. Density of woody plants was negatively correlated with altitude. Species richness was positively correlated with sand and altitude but negatively correlated with soil nutrients and clay content. It is concluded that the measured environmental variables significantly account for variation in the composition and distribution of the plant species composition in the Borana lowlands. Therefore, rangeland managers should incorporate environmental factors in planning and implementing restoration activities and planning grazing land use."],["dc.identifier.gro","3147962"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5298"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0379-2897"],["dc.title","Relationships between vegetation composition and environmental variables in the Borana rangelands, southern Oromia, Ethiopia"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]