Schlecht, Eva

[["dc.bibliographiccitation.artnumber","e0276580"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Schlecht, Eva"],["dc.contributor.author","Dickhoefer, Uta"],["dc.contributor.author","Aloufi, Shadha"],["dc.contributor.author","Alqaisi, Othman"],["dc.contributor.author","Buerkert, Andreas"],["dc.contributor.editor","Sarker, Md Nazirul Islam"],["dc.date.accessioned","2022-12-01T08:31:27Z"],["dc.date.available","2022-12-01T08:31:27Z"],["dc.date.issued","2022"],["dc.description.abstract","In the Anthropocene the consequences of land-use transformation on ecosystem services are of growing concern, particularly in fragile areas of mountain agriculture that often represent high nature-value farmland. This study uses a decadal repeated survey approach to analyse the effects of modernisation on oasis systems in the Jabal Al Akhdar region of northern Oman. This rugged mountain region at the north-eastern tip of the Arabian Peninsula experiences a growing influx of regional and international tourists since the opening of a modern highway 15 years ago. In 2007, at the onset of transformation processes, a survey was conducted with all households (HH) located in three major settlements along the 1000-m-altitude gradient of the Wadi Muaydin watershed. The survey was repeated in 2018, including all remaining HH of the three settlements. This longitudinal approach allowed studying the consequences of social-ecological transformation processes on crop and livestock husbandry, agricultural labour use, product marketing, and perception of the region’s future by its local residents. Though the village inhabitants are aging and declining in numbers, they still adhere to agriculture, largely because of tradition and identity. Fallowing and abandoning farmland increased over the investigated time span but was paralleled by increased application of agrochemicals and animal manure on fields, purchase of roughage and concentrate feeds for small ruminants, concentration on cash crop and meat production for sale, and increased employment of migrant workers. These indicators of modernisation of oasis agriculture are accompanied by predominantly pessimistic views on future prospects of oasis farming. Commonly perceived problems are shortage of irrigation water and profound societal change. Against these challenges, value chain generation and direct marketing opportunities for local agricultural produce are seen as prerequisites to keep the high nature-value farmland of these mountain oases alive."],["dc.description.sponsorship"," Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659"],["dc.description.sponsorship"," Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659"],["dc.identifier.doi","10.1371/journal.pone.0276580"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/118170"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-621"],["dc.relation.eissn","1932-6203"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Showcasing the multifaceted aspects of agricultural transformation: The example of mountain oases in Oman"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","140"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Archives of Animal Nutrition"],["dc.bibliographiccitation.lastpage","157"],["dc.bibliographiccitation.volume","73"],["dc.contributor.author","Wassie, Shimels Eshete"],["dc.contributor.author","Ali, Asep Indra Munawar"],["dc.contributor.author","Korir, Daniel"],["dc.contributor.author","Butterbach-Bahl, Klaus"],["dc.contributor.author","Goopy, John"],["dc.contributor.author","Merbold, Lutz"],["dc.contributor.author","Schlecht, Eva"],["dc.contributor.author","Dickhoefer, Uta"],["dc.date.accessioned","2020-12-10T18:15:24Z"],["dc.date.available","2020-12-10T18:15:24Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1080/1745039X.2019.1572343"],["dc.identifier.eissn","1477-2817"],["dc.identifier.issn","1745-039X"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74829"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Effects of feed intake level on efficiency of microbial protein synthesis and nitrogen balance in Boran steers consuming tropical poor-quality forage"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1035"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Journal of Arid Environments"],["dc.bibliographiccitation.lastpage","1045"],["dc.bibliographiccitation.volume","73"],["dc.contributor.author","Brinkmann, Katja"],["dc.contributor.author","Patzelt, Annette"],["dc.contributor.author","Dickhoefer, Uta"],["dc.contributor.author","Schlecht, Eva"],["dc.contributor.author","Buerkert, Andreas"],["dc.date.accessioned","2018-11-07T11:22:47Z"],["dc.date.available","2018-11-07T11:22:47Z"],["dc.date.issued","2009"],["dc.description.abstract","Little is known about the effects of grazing on vegetation composition on the Arabian Peninsula. The aim of this study therefore was to analyse the vegetation response to environmental conditions of open woodlands along an altitudinal and a grazing gradient in the Jabal al Akhdar mountain range of Oman. The species composition, vegetation structure, grazing damage and several environmental variables were investigated for 62 samples using a nested plot design. Classification analysis and a Canonical Variate Analysis (CVA) were used to define vegetation types and to identify underlying environmental gradients. The relationship between environmental variables and diversity was analysed using correlation coefficients and a main-effects ANOVA. The plant species richness followed a unimodal distribution along the altitudinal gradient with the highest number of species at the intermediate altitudinal belt. The cluster analysis led to five vegetation groups: The Sideroxylon mascatense-Dodonaea viscosa group on grazed and the Olea europaea-Fingerhuthia africana group on ungrazed plateau sites at 2000 m a.s.l., the Ziziphus spina-christi-Nerium oleander group at wadi sites and the Moringa peregrina-Pteropyrum scoparium group at 1200 m a.s.l, and the Acacia gerrardii-Leucas inflata group at 1700 in a.s.l. The CVA indicated a clear distinction of the groups obtained by the agglomrative Cluster analysis. The landform, altitude and grazing intensity were found to be the most important variables distinguishing between clusters. overgrazing of the studied rangeland is an increasing environmental problem, whereas the plant composition at ungrazed sites pointed to a relatively fast and high regeneration potential of the local vegetation. (C) 2009 Published by Elsevier Ltd."],["dc.description.sponsorship","German Research Foundation (DFG) [BU 1308]"],["dc.identifier.doi","10.1016/j.jaridenv.2009.05.002"],["dc.identifier.isi","000269095200009"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56052"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0140-1963"],["dc.relation.orgunit","Abteilung Ökosystemmodellierung"],["dc.subject.gro","Competition Facilitation Tree-tree interactions Point pattern analysis"],["dc.title","Vegetation patterns and diversity along an altitudinal and a grazing gradient in the Jabal al Akhdar mountain range of northern Oman"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","465"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Remote Sensing of Environment"],["dc.bibliographiccitation.lastpage","474"],["dc.bibliographiccitation.volume","115"],["dc.contributor.author","Brinkmann, Katja"],["dc.contributor.author","Dickhoefer, Uta"],["dc.contributor.author","Schlecht, Eva"],["dc.contributor.author","Buerkert, Andreas"],["dc.date.accessioned","2018-11-07T08:59:14Z"],["dc.date.available","2018-11-07T08:59:14Z"],["dc.date.issued","2011"],["dc.description.abstract","The productivity of semi-arid rangelands on the Arabian Peninsula is spatially and temporally highly variable, and increasing grazing pressure as well as the likely effects of climatic change further threatens vegetation resources. Using the Al Jabal al Akhdar mountains in northern Oman as an example, our objectives were to analyse the availability and spatial distribution of aboveground net primary production (ANPP) and the extent and causes of vegetation changes during the last decades with a remote sensing approach. A combination of destructive and non-destructive biomass measurements by life-form specific allometric equations was used to identify the ANPP of the ground vegetation (<50 cm) and the leaf and twig biomass of phanerophytes. The ANPP differed significantly among the life forms and the different plant communities, and the biomass of the sparsely vegetated ground was more than 50 times lower (mean = 0.22 t DM ha(-1)) than the biomass of phanerophytes (mean = 12.3 t DM ha(-1)). Among the different vegetation indices calculated NDVI proved to be the best predictor for rangeland biomass. Temporal trend analysis of Landsat satellite images from 1986 to 2009 was conducted using a pixel-based least square regression with the annual maximum Normalized Differenced Vegetation Index (NDVImax) as a dependent variable. Additionally, linear relationships of NDVImax and annual rainfall along the time series were calculated. The extent of human-induced changes was analysed using the residual trends method. A strongly significant negative biomass trend detected for 83% of the study area reflected a decrease in annual rainfall but even without clear evidence of deforestation of trees and shrubs, human-induced vegetation degradation due to settlement activities were also important. (C) 2010 Elsevier Inc. All rights reserved."],["dc.description.sponsorship","German Research Foundation (DFG) [BU 1308]"],["dc.identifier.doi","10.1016/j.rse.2010.09.016"],["dc.identifier.isi","000286782500018"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23842"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Inc"],["dc.relation.issn","0034-4257"],["dc.title","Quantification of aboveground rangeland productivity and anthropogenic degradation on the Arabian Peninsula using Landsat imagery and field inventory data"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","307"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Archives of Animal Nutrition"],["dc.bibliographiccitation.lastpage","321"],["dc.bibliographiccitation.volume","70"],["dc.contributor.author","Al-Kindi, Amal"],["dc.contributor.author","Dickhoefer, Uta"],["dc.contributor.author","Schlecht, Eva"],["dc.contributor.author","Sundrum, Albert"],["dc.contributor.author","Schiborra, Anne"],["dc.date.accessioned","2020-12-10T18:15:23Z"],["dc.date.available","2020-12-10T18:15:23Z"],["dc.date.issued","2016"],["dc.description.abstract","Under irrigated arid conditions, organic fertiliser rich in slowly decomposable nitrogen (N) and carbon (C) is needed for soil fertility maintenance. Feeding ruminants with condensed tannins will lower ruminal protein degradation, reduce urinary N excretion and might increase the faecal fraction of slowly decomposable N. Supplementation with activated charcoal (AC) might enrich manure with slowly degrading C. Therefore, we investigated the effects of feeding quebracho tannin extract (QTE) and AC on the N balance of goats, the efficiency of microbial protein synthesis in the rumen (EMPS) and the composition of faeces. The feeding trial comprised three periods; in each period, 12 male Boer goats (28 +/- 3.9kg live weight) were assigned to six treatments: a Control diet (per kg diet 500g grass hay and 500g concentrate) and to further five treatments the Control diet was supplemented with QTE (20g and 40g/kg; diets QTE2 and QTE4, respectively), with AC (15g and 30g/kg, diets AC1.5 and AC3.0, respectively) and a mixture of QTE (20g/kg) plus AC (15g/kg) (diet QTEAC). In addition to the N balance, EMPS was calculated from daily excretions of purine derivatives, and the composition of faecal N was determined. There was no effect of QTE and AC supplementation on the intake of organic matter (OM), N and fibre, but apparent total tract digestibility of OM was reduced (p=0.035). Feeding QTE induced a shift in N excretion from urine to faeces (p0.001) without altering N retention. Total N excretion tended to decrease with QTE treatments (p=0.053), but EMPS was not different between treatments. Faecal C excretion was higher in QTE and AC treatments (p=0.001) compared with the Control, while the composition of faecal N differed only in concentration of undigested dietary N (p=0.001). The results demonstrate that QTE can be included into diets of goats up to 40g/kg, without affecting N utilisation, but simultaneously increasing the excretion of slowly decomposable N and C fractions. Feeding AC up to 30g/kg of the diet increases slowly degradable faecal C concentration, without negative effects on N metabolism of goats."],["dc.identifier.doi","10.1080/1745039X.2016.1175807"],["dc.identifier.eissn","1477-2817"],["dc.identifier.isi","000377024700005"],["dc.identifier.issn","1745-039X"],["dc.identifier.pmid","27161670"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74828"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Taylor & Francis Ltd"],["dc.relation.issn","1477-2817"],["dc.relation.issn","1745-039X"],["dc.title","Effects of quebracho tannin extract (Schinopsis balansae Engl.) and activated charcoal on nitrogen balance, rumen microbial protein synthesis and faecal composition of growing Boer goats"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","131"],["dc.bibliographiccitation.journal","Agricultural Systems"],["dc.bibliographiccitation.lastpage","141"],["dc.bibliographiccitation.volume","110"],["dc.contributor.author","Dickhoefer, Uta"],["dc.contributor.author","Nagieb, Maher"],["dc.contributor.author","Neutzling, Aline dos Santos"],["dc.contributor.author","Buerkert, Andreas"],["dc.contributor.author","Schlecht, Eva"],["dc.date.accessioned","2018-11-07T09:08:31Z"],["dc.date.available","2018-11-07T09:08:31Z"],["dc.date.issued","2012"],["dc.description.abstract","Pastoral goat husbandry supplies meat and income to farm households in villages of Al Jabal al Akhdar, Oman. However, the nutritive value of the pasture vegetation is low and farmers offer only little supplement feeds at the homestead. Hence, the objectives were to determine growth and reproductive rates of the animals, to estimate farmers' revenues from goat husbandry, and to evaluate to which extent they can be increased by an improved feeding at the homestead or the conversion to zero-grazing systems. During November 2006-October 2007, daily weight gain of goats of two different types of livestock farms was measured on six farms each. Progeny history interviews were conducted on does (n = 114) of these and three additional households to determine age at first parturition (AFP, months), kidding interval (KI, months), and prolificacy (PR, n of kids parturition(-1)). Annual revenues ((sic) head(-1)) from traditionally managed goat herds were estimated using the herd model PRY. They were also simulated for a semi-intensive system (i.e. increased homestead feeding of grazing goats) and a zero-grazing management assuming higher growth and reproductive rates. Irrespective of farm type, post-weaning weight gains of traditionally managed bucks (73 g d(-1), SD 34.6) and does (48 g d(-1), SD 25.7) were lower than growth rates observed in goats of the same breed under feedlot conditions. In particular young does were not able to compensate for growth retardation with advancing maturity. Together with late AFP (22, SD 9.7), prolonged KI (12. SD 4.3), and small PR (1.1, SD 0.20), the slow growth resulted in low annual revenues of 38 (sic) head(-1). Simulated annual revenues were 51 (sic) head(-1) for the semi-intensive and 66 (sic) head(-1) for the zero-grazing system. Nevertheless, revenues per dry matter (DM) of feed offered at the homestead (i.e. feed use efficiency) were similar or higher for the two traditional farm types (0.20 and 0.27 (sic) kg(-1) DM) and the semi-intensive system (0.33 (sic) kg(-1) DM) compared to zero-grazing management (0.22 (sic) kg(-1) DM). Improved homestead feeding of grazing goats, in particular of young does, according to their specific requirements can increase their growth and reproductive performance and thus overall herd productivity without reducing use efficiency of feeds offered at the homestead. It might therefore be a valuable alternative to the introduction of zero-grazing systems. However, further research on expenses and labor input into goat husbandry are needed to allow for a final evaluation of its contribution to total household income. (c) 2012 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.agsy.2012.03.015"],["dc.identifier.isi","000306630900012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26049"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","0308-521X"],["dc.title","Modeling herd development and revenues for Jabal Akhdar goats under current and intensified management practices"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1325"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of Animal Physiology and Animal Nutrition"],["dc.bibliographiccitation.lastpage","1337"],["dc.bibliographiccitation.volume","103"],["dc.contributor.author","Ali, Asep I.M."],["dc.contributor.author","Wassie, Shimels E."],["dc.contributor.author","Korir, Daniel"],["dc.contributor.author","Goopy, John P."],["dc.contributor.author","Merbold, Lutz"],["dc.contributor.author","Butterbach‐Bahl, Klaus"],["dc.contributor.author","Dickhoefer, Uta"],["dc.contributor.author","Schlecht, Eva"],["dc.date.accessioned","2020-12-10T18:29:05Z"],["dc.date.available","2020-12-10T18:29:05Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1111/jpn.v103.5"],["dc.identifier.eissn","1439-0396"],["dc.identifier.issn","0931-2439"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/76519"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Digesta passage and nutrient digestibility in Boran steers at low feed intake levels"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","564"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Animals"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Ali, Asep I. M."],["dc.contributor.author","Wassie, Shimels E."],["dc.contributor.author","Joergensen, Rainer Georg"],["dc.contributor.author","Korir, Daniel"],["dc.contributor.author","Goopy, John P."],["dc.contributor.author","Butterbach-Bahl, Klaus"],["dc.contributor.author","Merbold, Lutz"],["dc.contributor.author","Dickhoefer, Uta"],["dc.contributor.author","Schlecht, Eva"],["dc.date.accessioned","2021-04-14T08:29:48Z"],["dc.date.available","2021-04-14T08:29:48Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.3390/ani11020564"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82992"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.publisher","MDPI"],["dc.relation.eissn","2076-2615"],["dc.rights","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Feed Quality and Feeding Level Effects on Faecal Composition in East African Cattle Farming Systems"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]