Hohnwald, Stefan

[["dc.bibliographiccitation.firstpage","177"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Erdkunde"],["dc.bibliographiccitation.lastpage","193"],["dc.bibliographiccitation.volume","71"],["dc.contributor.author","Schönenberg, Regine"],["dc.contributor.author","Boy, Jens"],["dc.contributor.author","Hartberger, Korbinian"],["dc.contributor.author","Schumann, Charlotte"],["dc.contributor.author","Guggenberger, Georg"],["dc.contributor.author","Siebold, Matthias"],["dc.contributor.author","Lakes, Tobia"],["dc.contributor.author","Lamparter, Gabriele"],["dc.contributor.author","Schindewolf, Marcus"],["dc.contributor.author","Schaldach, Rüdiger"],["dc.contributor.author","Nendel, Claas"],["dc.contributor.author","Hohnwald, Stefan"],["dc.contributor.author","Meurer, Katharina H. E."],["dc.contributor.author","Gerold, Gerhard"],["dc.contributor.author","Klingler, Michael"],["dc.date.accessioned","2020-12-10T18:43:57Z"],["dc.date.available","2020-12-10T18:43:57Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.3112/erdkunde.2017.03.02"],["dc.identifier.issn","0014-0015"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78276"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Experiences of inter- and transdisciplinary research – a trajectory of knowledge integration within a large research consortium"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","919"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Forests"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Hohnwald, Stefan"],["dc.contributor.author","Indreica, Adrian"],["dc.contributor.author","Walentowski, Helge"],["dc.contributor.author","Leuschner, Christoph"],["dc.date.accessioned","2021-04-14T08:32:35Z"],["dc.date.available","2021-04-14T08:32:35Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.3390/f11090919"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83957"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1999-4907"],["dc.title","Microclimatic Tipping Points at the Beech–Oak Ecotone in the Western Romanian Carpathians"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","17"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Erdkunde"],["dc.bibliographiccitation.lastpage","31"],["dc.bibliographiccitation.volume","64"],["dc.contributor.author","Hohnwald, Stefan"],["dc.contributor.author","Acioli De Abreu, Eliana M."],["dc.contributor.author","Krummel, Timo"],["dc.contributor.author","Trautwein, Julia"],["dc.contributor.author","Da Veiga, Jonas Bastos"],["dc.contributor.author","Wolly, Clemens B. A."],["dc.contributor.author","Braga Calandrini De Azevedo, Celia M."],["dc.contributor.author","Gerold, Gerhard"],["dc.date.accessioned","2018-11-07T08:47:33Z"],["dc.date.available","2018-11-07T08:47:33Z"],["dc.date.issued","2010"],["dc.description.abstract","In the densely settled Bragantina region, northern Brazil, smallholder cattle pastures start into compulsory degradation processes indicated, among other factors by the woody encroachment of the resprouting secondary vegetation, nationally called \"capoeira\". By means of Landsat and QuickBird satellite imagery techniques different stages of tree-dominated pastures were identified and the distribution of degraded pastures quantified. This was tested in a supervised Landsat classification from 2006 and 2007, taking QuickBird imageries from 2004 and 2005 as additional ground checks. We found that 42% of the rural Bragantinian landscape has already converted into pastures, 28% in advanced stages of above ground pasture degradation. Our reclassification means that the region is still confronted with a serious ecological pasture problem and that conventional land use classifications, climatological models and carbon calculations, based on Landsat imageries only, underestimate pasture distribution and thus lead to inaccurate extrapolations. As the resprouting shrubs of the capoeira are a permanent problem on tropical lowland pastures but, on the other hand, are also the ecological basis of the sustainable slash-and-burn systems of smallholders, we tested some innovative strategies to tolerate various useful woody components of the capoeira on pastures to stabilise them ecologically: first, a buffet trial shows that the ten tested capoeira and some other common domesticated tree species obtain a comparable palatability as well-known woody forage legumes. Thus, Cecropia palmata and Titbonia diversifolia, among others, were as palatable for cattle as the well-known multi-purpose legume Cratylia argentea. As a consequence, these freely accessible tree species should not be slashed but fostered on pastures, like supplementary forage plants. Secondly, it is demonstrated that the multi-purpose forage legumes C. argentea and Flemingia marrophylla perform better under smallholder management than under large scaled farming or even intense management due to the associated prolonged restoration times. In sum, we could demonstrate that woody components (capoeira and/ or woody legumes) are more appropriate for the humid tropics than pure grass-monocultures. Based on these experiences, we modified the model of a grass-capoeira-legume pasture, incorporating pastures just as an interim stage of the slash-andburn system. Forage production could be enhanced in that system by selective slashing of the capoeira (palatable species are tolerated) and by incorporating woody forage legumes. As this biome is known to restore its ecosystem fertility rather in its above-ground biomass than in its poor soils, woody components on pastures are recommended for ecologically sustainable production systems. Furthermore, they might be requisite to mitigate the proclaimed climatic change in the Amazon."],["dc.identifier.doi","10.3112/erdkunde.2010.01.02"],["dc.identifier.isi","000277632600002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/20985"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Boss Druck Medien Gmbh"],["dc.relation.issn","0014-0015"],["dc.title","DEGRADED PASTURE DISTRIBUTION AND WOODY ENRICHMENT STRATEGIES FOR PASTURE FERTILITY PRESERVATION IN THE BRAGANTINA REGION, NORTH-EASTERN AMAZON"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","609"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Sustainability"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Walentowski, Helge"],["dc.contributor.author","Heinrichs, Steffi"],["dc.contributor.author","Hohnwald, Stefan"],["dc.contributor.author","Wiegand, Alexander"],["dc.contributor.author","Heinen, Henry"],["dc.contributor.author","Thren, Martin"],["dc.contributor.author","Gamarra Torres, Oscar"],["dc.contributor.author","Sabogal, Ana"],["dc.contributor.author","Zerbe, Stefan"],["dc.date.accessioned","2020-12-10T18:47:21Z"],["dc.date.available","2020-12-10T18:47:21Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.3390/su10030609"],["dc.identifier.eissn","2071-1050"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78732"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.publisher","MDPI"],["dc.relation.eissn","2071-1050"],["dc.rights","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Vegetation Succession on Degraded Sites in the Pomacochas Basin (Amazonas, N Peru)—Ecological Options for Forest Restoration"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","107"],["dc.bibliographiccitation.journal","Agriculture Ecosystems & Environment"],["dc.bibliographiccitation.lastpage","115"],["dc.bibliographiccitation.volume","218"],["dc.contributor.author","Hohnwald, Stefan"],["dc.contributor.author","Trautwein, Julia"],["dc.contributor.author","Camarao, Ari P."],["dc.contributor.author","Wollny, Clemens B. A."],["dc.date.accessioned","2018-11-07T10:18:12Z"],["dc.date.available","2018-11-07T10:18:12Z"],["dc.date.issued","2016"],["dc.description.abstract","In northeastern Para, smallholder agriculture systems are still based on secondary forest fallows, nationally called \"capoeira\", presumed to contain a remarkable amount of underutilized valuable woody species, for instance as supplementary forage for cattle. We tested five promising capoeira species, namely Phenakospermum guyannense, Cecropia palmata, Attalea maripa, Inga edulis, and Abarema jupunba by comparing its relative palatability-i.e., the palatability differences between the tested species and the reference forage legumes, forage grass, and between the other tested species-, heights, biomass production, and main nutritive values with the well-known tropical forage legumes Cratylia argentea and Flemingia macrophylla. Additionally, the locally common domesticated species Tithonia diversifolia, Mangifera indica, and Racosperma mangium were also included in the trial, all implemented in a randomized block design on a Brachiaria-pasture (n = 2000 saplings, 8 replication blocks). After two years of establishment, four steers with an average body mass of 506 kg browsed the trial (2 AU/ha). The relative palatability testing showed that A. jupunba, M. indica and also surprisingly R. mangium (all >20% of its respective total biomass) matched the consumed biomass of F. macrophylla, while C. palmata (>60%) even surpassed very palatable C. argentea. R. mangium also had the highest biomass production, while the other species showed just regular growth and establishing rates. Protein contents of all species were above 6%, most of them higher than 10% and in the case of T. diversifolia even above 20%. Thus, all tested species almost reached the quality of the reference legumes. However, as plant secondary compounds were not regarded in this trial, recommendations as supplementary forage plants can only be given with reservations. The results suggest that smallholders possess cheap forage supplement alternatives on their farms and even on their pasture plots, which simply have to be tolerated by just pruning them into accessible heights for animals. However, sapling transplantation from shady capoeiras on old slightly degraded pastures for biomass enrichment cannot be recommended. (C) 2015 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.agee.2015.11.015"],["dc.identifier.isi","000369463100012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41389"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1873-2305"],["dc.relation.issn","0167-8809"],["dc.title","Relative palatability and growth performance of capoeira species as supplementary forages in the NE-Amazon"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","813"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Agroforestry Systems"],["dc.bibliographiccitation.lastpage","828"],["dc.bibliographiccitation.volume","89"],["dc.contributor.author","Hohnwald, Stefan"],["dc.contributor.author","Rischkowsky, Barbara"],["dc.contributor.author","King, John M."],["dc.contributor.author","Camarao, Ari P."],["dc.contributor.author","Rodrigues Filho, Jose A."],["dc.contributor.author","Zeppenfeld, Thorsten"],["dc.date.accessioned","2018-11-07T09:51:14Z"],["dc.date.available","2018-11-07T09:51:14Z"],["dc.date.issued","2015"],["dc.description.abstract","In northeastern Para, extensive fallow-based agriculture systems are still common on smallholdings. Soil fertility is maintained by permitting the recuperation of the capoeira forest fallow. Much of the capoeira, however, has been eliminated, e.g. for permanent pastures but grass-monocultures usually ecologically degrade within a decade and lead often to barren pasturelands. To avoid these biologically degraded pastures, an innovative organic agro-forestry-system-model has been proposed, temporarily integrating pastures/cattle into the slash-and-burn cycle. The new approach assumes that cattle impact such as browsing and trampling would not alter the capoeira. This hypothesis was tested in researcher-managed on-farm experiments, by floristically comparing grass-capoeira pastures (GCP) against undisturbed capoeiras (UC) and traditional grass pastures (GP). Therefore, each pasture treatment was replicated three times on 0.36 ha pasture plots, respectively. Cattle were introduced at a stocking rate of 667 kg/ha, being reduced by one animal after 38 months to 410 kg/ha. Cattle impact was ascertained by comparing total capoeira phytodiversity, species similarity, life form structure, and vegetation cover. It was found that even intensive cattle impact on young capoeiras was neglectable and did not alter phytodiversity nor species composition. GCPs just showed a slight retardation in comparison to UC so that the botanical evidence of the ecological sustainability of a GCP could be proved. A PerMANOVA revealed that only 4.7 % (F = 5.513; RA(2)A = 0.047) of the differences between GCP and UC are attributed to the cattle impact/slashing regime. Our preliminary results suggest that the biodiverse system approach is worth pursuing as an alternative to degraded pastures."],["dc.identifier.doi","10.1007/s10457-015-9815-9"],["dc.identifier.isi","000361449300005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35873"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1572-9680"],["dc.relation.issn","0167-4366"],["dc.title","Intensive cattle browsing did not prevent fallow recuperation on smallholder grass-capoeira pastures in the NE-Amazon"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Regional Environmental Change"],["dc.bibliographiccitation.lastpage","9"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","Gerold, Gerhard"],["dc.contributor.author","Couto, Eduardo Guimarães"],["dc.contributor.author","Madari, Beata Emoke"],["dc.contributor.author","Jungkunst, Hermann F."],["dc.contributor.author","Amorim, Ricardo Silva Santos"],["dc.contributor.author","Hohnwald, Stefan"],["dc.contributor.author","Klingler, Michael"],["dc.contributor.author","de Almeida Machado, Pedro Luiz Oliveira"],["dc.contributor.author","Schönenberg, Regine"],["dc.contributor.author","Nendel, Claas"],["dc.date.accessioned","2020-12-10T14:11:11Z"],["dc.date.available","2020-12-10T14:11:11Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1007/s10113-017-1268-4"],["dc.identifier.eissn","1436-378X"],["dc.identifier.issn","1436-3798"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15549"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70994"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","CC BY 4.0"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0"],["dc.title","Carbon-optimised land management strategies for southern Amazonia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","TROPICAL GRASSLANDS"],["dc.bibliographiccitation.volume","39"],["dc.contributor.author","Hohnwald, Stefan"],["dc.contributor.author","Rischkowsky, Barbara"],["dc.contributor.author","Camarao, Ari P."],["dc.contributor.author","Rodrigues, J. A."],["dc.contributor.author","Schultze-Kraft, R."],["dc.contributor.author","King, John M."],["dc.date.accessioned","2018-11-07T10:54:03Z"],["dc.date.available","2018-11-07T10:54:03Z"],["dc.date.issued","2005"],["dc.format.extent","236"],["dc.identifier.isi","000235646600029"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49484"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Tropical Grassland Soc Aust"],["dc.relation.issn","0049-4763"],["dc.title","Experiences with establishing legumes as part of a ley pasture in a low-input farming system of the eastern Amazon, Brazil"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","266"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Agriculture Ecosystems & Environment"],["dc.bibliographiccitation.lastpage","276"],["dc.bibliographiccitation.volume","117"],["dc.contributor.author","Hohnwald, Stefan"],["dc.contributor.author","Rischkowsky, Barbara"],["dc.contributor.author","Camarao, Ari P."],["dc.contributor.author","Schultze-Kraft, R."],["dc.contributor.author","Rodrigues Filho, Jose A."],["dc.contributor.author","King, John M."],["dc.date.accessioned","2018-11-07T08:51:24Z"],["dc.date.available","2018-11-07T08:51:24Z"],["dc.date.issued","2006"],["dc.description.abstract","In the humid tropics of northern Brazil, where slash-and-burn cropping is the prevailing smallholder land use system, pastures ecologically degrade after 7-10 years of use, mostly due to invading vegetation, decline of soil fertility (N, P) and insect pests. Degraded pasture areas cannot be easily restored or returned to cropping, so large areas are abandoned. To avoid this degradation process, two alternative pastures were tested to incorporate cattle into the slash-and-burn cropping cycle. It was thought that the inclusion of secondary woody fallow vegetation, locally called capoeira, or of legumes in pastures restores the soil for a subsequent cropping phase while allowing an acceptable level of animal performance. This hypothesis was tested in a researcher-managed on-farm experiment in Igarape-Acu (Bragantina region, Para). A grass-legume pasture (GLP), combining the grass Brachiaria humidicola with three multi-purpose legumes, was compared with a pasture, where controlled regrowth of capoeira was tolerated (GCP), and tested against two controls in the form of a conventional B. humidicola pasture (GP) and undisturbed regrowth of capoeira (UC). The pastures were grazed in a rotational system for 2 years at 1.5 livestock units (LU) ha(-1) in the first year and at 1.2 LU ha(-1) in the following year. The results showed that the GCP kept the full regenerative potential of the capoeira, showing no significant loss of phytodiversity (GCP 67 species 100 m(-2); UC 72 species 100 m(-2)) and low dissimilarity in species composition measured by Euclidian distance (UC/GCP = 51; UC/UC = 52 GCP/GCP = 33). On the GLP, the legumes Arachis pintoi and Cratylia argentea almost disappeared due to the grazing pressure, while Chamaecrista rotundifolia var. grandiflora was little palatable and invaded the plots by seed propagation. None of the legumes produced a meaningful quantity of nodules, and no difference in total soil N was found between GLP and the other pasture treatments. With regard to animal production, both alternative pastures were less productive than GP over 21 months of grazing (GLP = 384 kg liveweight ha(-1), GCP = 474 kg ha(-1), GP = 659 ka ha(-1)), which was attributed to overstocking in the second year. GCP was considered to be an interesting option for smallholdings, provided the balance between the vigorous regrowth of capoeira and forage grass cover can be maintained. In contrast, on GLP a more palatable Ch. rotundifolia accession would be desirable and the establishment of all legumes needs to be improved. It was concluded that GCP would support a subsequent cropping phase better than GLP. However, on both pastures stocking rates would have to be frequently adjusted a management practice that is of secondary consideration in a crop/livestock system in which cattle are kept as cash-generating assets. (c) 2006 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.agee.2006.04.014"],["dc.identifier.isi","000243706100004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21924"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0167-8809"],["dc.title","Integrating cattle into the slash-and-burn cycle on smallholdings in the Eastern Amazon, using grass-capoeira or grass-legume pastures"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]