Worbes, Martin

[["dc.bibliographiccitation.firstpage","442"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Trees"],["dc.bibliographiccitation.lastpage","451"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","Fichtler, E."],["dc.contributor.author","Trouet, V."],["dc.contributor.author","Beeckman, H."],["dc.contributor.author","Coppin, P."],["dc.contributor.author","Worbes, Martin"],["dc.date.accessioned","2018-11-07T10:47:59Z"],["dc.date.available","2018-11-07T10:47:59Z"],["dc.date.issued","2004"],["dc.description.abstract","Tree-ring studies contribute worldwide to the understanding of climate and its relation to tree growth. Long tree-ring chronologies serve as climate proxies for the reconstruction of past, pre-instrument climate and its recent change. In tropical regions, the availability of exactly dated tree-ring chronologies is limited. The dendroclimatic potential of two dominant species from dry forests in northern Namibia was examined in the study presented in this paper. Both species (Burkea africana Hook and Pterocarpus angolensis DC) were sampled at two sites (ca. 900 km apart), and the response to several climatic variables, including ENSO indices, is studied. All specimens showed distinct growth rings and cross-dating between radii was successful for all trees. Species-specific mean curves were built for both sites. The mean curves of different species of the same site synchronised significantly, allowing the construction of a site-specific chronology. Synchronisation between sites was not possible, but spectral analysis of the chronologies implied that both show similar long-term (6.7 year) oscillation patterns. B. africana is more sensitive to rainfall variation than P. angolensis at both sites. Growth response to rainfall was positive, but a time-lag in the reaction occurred between the sites, corresponding to the time-lag of the beginning of the rainy season. Air temperature showed a negative correlation with stem increment at both sites. The response at the westernmost site to two ENSO indices indicates a tree growth decrease during El Nino years, which are generally dry in southern Africa."],["dc.identifier.doi","10.1007/s00468-004-0324-0"],["dc.identifier.isi","000222943100009"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/48092"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0931-1890"],["dc.title","Climatic signals in tree rings of Burkea africana and Pterocarpus angolensis from semiarid forests in Namibia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","231"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Dendrochronologia"],["dc.bibliographiccitation.lastpage","238"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Worbes, Martin"],["dc.contributor.author","Raschke, Nils"],["dc.date.accessioned","2018-11-07T09:15:02Z"],["dc.date.available","2018-11-07T09:15:02Z"],["dc.date.issued","2012"],["dc.description.abstract","The rising discussion on carbon balance of tropical forests often does not consider the sequestration. potential of secondary dry forests, which are becoming an increasing importance due to land use change and reforestation. We have developed an easy applicable tool for the estimation of biomass increment of tropical secondary forest stands on the base of tree ring analysis. The existence of annual rings was shown by a combination of anatomical examination and radiocarbon estimations. With tree ring analysis, forest inventories and destructive sampling the above-ground biomass increment of secondary forest stands of age between 9 and 48 years in the dry forest region of Guanacaste, Costa Rica were estimated. The above-ground biomass increment of the tree layer varies between 2.4 and 3.2 Mg/ha yr in different stands. Lianas contribute with up to 23% additional production. Differences in productivity among the stands along a chronosequence were not significant. The measured carbon allocation potential of 1.7-2.1 Mg C/ha yr lies in the range of reported values from other tropical dry forests and old growth humid forests as well. (C) 2012 Istituto Italian di Dendrocronologia. Published by Elsevier GmbH. All rights reserved."],["dc.description.sponsorship","AVINA Foundation, Switzerland"],["dc.identifier.doi","10.1016/j.dendro.2011.11.001"],["dc.identifier.isi","000307620800005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/27575"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Gmbh, Urban & Fischer Verlag"],["dc.relation.issn","1125-7865"],["dc.title","Carbon allocation in a Costa Rican dry forest derived from tree ring analysis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0219770"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Worbes, Martin"],["dc.contributor.author","Schöngart, Jochen"],["dc.date.accessioned","2019-09-24T07:47:33Z"],["dc.date.available","2019-09-24T07:47:33Z"],["dc.date.issued","2019"],["dc.description.abstract","The conservation of tropical forests is recognized as one of the most important challenges for forestry, ecology and politics. Besides strict protection, the sustainable management of natural forests should be enhanced as a key part of the foundation for the maintenance of tropical rain forest ecosystems. Due to methodological reasons it has been complicated to attain reliable growth data to plan sustainable felling cycles and rotation periods. Tree ring analyses enable the estimation of growth rates over the entire life span of trees and their age as well as giving hints from forest dynamics in previous centuries. For tree ring analysis, stem disk samples were taken from three important commercial tree species (Cariniana micrantha, Caryocar villosum and Manilkara huberi) in the upland (terra firme) forests of the Precious Woods Amazon logging company near Itacoatiara, Brazil. Based on radiocarbon estimates of individual growth zones, the annual nature of tree rings was proven for the three species. Tree rings were measured and the results used together with height estimates to model diameter, height and volume growth. The age of the eldest tree, a C. micrantha, was 585 yrs with 165 cm in diameter. The species' diameter increments range from 0.20±0.12 cm yr-1 to 0.29±0.08 cm yr-1. At first sight, this is considerably lower than increments reported from other Amazonian or African timber species. Considering the respective wood density there is no significant difference in growth performance of dominant timber species across continents. The interpretation of lifetime tree ring curves indicate differences in shadow tolerance among species, the persistence of individuals in the understory for up to 150 years and natural stand dynamics without major disturbances. Management criteria should be adapted for the measured growth rates as they differed considerably from the Brazilian standards fixed by laws (felling cycle of 25-35 years and a common minimum logging diameter of 50 cm). Felling cycles should be increased to 32-51 years and minimum logging diameters to 63-123 cm depending on the species."],["dc.identifier.doi","10.1371/journal.pone.0219770"],["dc.identifier.pmid","31386676"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16365"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62443"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","1932-6203"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Measures for sustainable forest management in the tropics - A tree-ring based case study on tree growth and forest dynamics in a Central Amazonian lowland moist forest"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","151"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Agroforestry Systems"],["dc.bibliographiccitation.lastpage","165"],["dc.bibliographiccitation.volume","68"],["dc.contributor.author","Khamzina, Asia"],["dc.contributor.author","Lamersdorf, Norbert P."],["dc.contributor.author","Martius, Christopher"],["dc.contributor.author","Worbes, Martin"],["dc.contributor.author","Vlek, Paul L. G."],["dc.date.accessioned","2018-11-07T09:07:53Z"],["dc.date.available","2018-11-07T09:07:53Z"],["dc.date.issued","2006"],["dc.description.abstract","This paper evaluates the potential of nine multipurpose tree species for afforestation of degraded land in the Khorezm region, Central Asia, particularly their suitability for biodrainage i.e., lowering the elevated groundwater table through the transpirative capacity of plantations. For this purpose water use (WU), water use efficiency (WUE) and tree physiological factors influencing transpiration were assessed during two consecutive years. Mean daily leaf transpiration differed significantly among the species and ranged during the seasons from 4.5-5.2 mmol m(-2) s(-1) for Prunus armeniaca L. to 4.5-10 mmol(-2) s(-1) for Elaeagnus angustifolia L. WU differences were triggered by species physiological features such as capability of water uptake by roots. Transpiration rates and the length of fine roots correlated highly (r = 0.7). Correlations of leaf transpiration rates with leaf area were weaker (r = 0.6). No correlations were found between salt content in plants and water uptake under conditions of slight-to-moderate rootzone soil salinity. Values of WUE per root and shoot DM were similar averaging, respectively, 0.2 and 0.3 g DM g(-1) water for two-year-old trees, and decreased with age. In addition to WU characteristics, also salinity tolerance, growth rate and the ability to produce fodder and fuelwood must be considered during species selection. Regarding these features, the N-fixing E. angustifolia ranked the highest, combining high WU, fast growth and production of nutritious feed. Examined Populus spp. and Ulmus pumila L. ranked lower but still represented potential candidates for biodrainage purposes. Typical fruit species in the region such as P. armeniaca and Morus alba, showed low biodrainage potential."],["dc.identifier.doi","10.1007/s10457-006-9006-9"],["dc.identifier.isi","000240725700007"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25901"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Dordrecht"],["dc.relation.conference","21st European Regional Meeting of the International Commission on Irrigation and Drainage"],["dc.relation.eventlocation","Frankfurt, GERMANY"],["dc.relation.issn","0167-4366"],["dc.title","Potential of nine multipurpose tree species to reduce saline groundwater tables in the lower Amu Darya River region of Uzbekistan"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","631"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Trees"],["dc.bibliographiccitation.lastpage","641"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Gebrekirstos, Aster"],["dc.contributor.author","Mitloehner, Ralph"],["dc.contributor.author","Teketay, Demel"],["dc.contributor.author","Worbes, Martin"],["dc.date.accessioned","2018-11-07T11:10:51Z"],["dc.date.available","2018-11-07T11:10:51Z"],["dc.date.issued","2008"],["dc.description.abstract","Long-term climate-growth relationships, were examined in tree rings of four co-occurring tree species from semi-arid Acacia savanna woodlands in Ethiopia. The main purpose of the study was to prove the presence of annual tree rings, evaluate the relationship between radial growth and climate parameters, and evaluate the association of El Nino and drought years in Ethiopia. The results showed that all species studied form distinct growth boundaries, though differences in distinctiveness were revealed among the species. Tree rings of the evergreen Balanites aegyptiaca were separated by vessels surrounding a thin parenchyma band and the growth boundary of the deciduous acacias was characterized by thin parenchyma bands. The mean annual diameter increment ranged from 3.6 to 5.0 mm. Acacia senegal and Acacia seyal showed more enhanced growth than Acacia tortilis and B. aegyptiaca. High positive correlations were found between the tree-ring width chronologies and precipitation data, and all species showed similar response to external climate forcing, which supports the formation of one tree-ring per year. Strong declines in tree-ring width correlated remarkably well with past El Nino Southern Oscillation (ENSO) events and drought/famine periods in Ethiopia. Spectral analysis of the master tree-ring chronology indicated occurrences of periodic drought events, which fall within the spectral peak equivalent to 2-8 years. Our results proved the strong linkage between tree-ring chronologies and climate, which sheds light on the potential of dendrochronological studies developing in Ethiopia. The outcome of this study has important implications for paleoclimatic reconstructions and in restoration of degraded lands."],["dc.description.sponsorship","German Academic Exchange Service (DAAD)"],["dc.identifier.doi","10.1007/s00468-008-0221-z"],["dc.identifier.isi","000259258900004"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3077"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/53302"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0931-1890"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Climate-growth relationships of the dominant tree species from semi-arid savanna woodland in Ethiopia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","557"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of Forestry Research"],["dc.bibliographiccitation.lastpage","569"],["dc.bibliographiccitation.volume","26"],["dc.contributor.author","Kacholi, David Sylvester"],["dc.contributor.author","Whitbread, Anthony Michael"],["dc.contributor.author","Worbes, Martin"],["dc.date.accessioned","2017-09-07T11:48:00Z"],["dc.date.available","2017-09-07T11:48:00Z"],["dc.date.issued","2015"],["dc.description.abstract","Uluguru forests are globally recognized as important biodiversity hotspots, but anthropogenic pressure threatens their value. This study examined species diversity, abundance, and structure of trees in the Uluguru forests. All trees of diameter at breast height (DBH) ≥ 10 cm were inventoried in seven forests ranging from 3 to 995 ha in area. A total of 900 stems, 101 species and 34 families were inventoried. Fabaceae was the most speciose family. Ehretia amoena Klotzsch was the most abundant species with relative abundance of 9.22 %. The forests differed significantly in species richness (26–93 species ha−1), tree density (85–390 stems ha−1), basal area (3–24 m2 ha−1) and Shannon-Wiener diversity (2.50–4.02). Forest area was significantly and positively correlated with species richness (r = 0.92) and species diversity (r = 0.95). Tree density showed significant positive correlation with species richness (r = 0.80) and basal area (r = 0.85). Milawilila and Nemele forests had highest floristic similarity (0.55) followed by Kimboza and Kilengwe (0.54) while the rest had similarity coefficients of less than 0.50. Despite legislative protection, many forests remain at risk and therefore the possibility to conserve highly valuable tree species via enhanced protection or cultivation must be considered."],["dc.identifier.doi","10.1007/s11676-015-0078-0"],["dc.identifier.gro","3149440"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6114"],["dc.language.iso","en"],["dc.notes.intern","Roetter Crossref Import - kein Roetter! Zuordnung?"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1007-662X"],["dc.title","Diversity, abundance, and structure of tree communities in the Uluguru forests in the Morogoro region, Tanzania"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","119"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","IAWA Journal"],["dc.bibliographiccitation.lastpage","140"],["dc.bibliographiccitation.volume","33"],["dc.contributor.author","Fichtler, Esther"],["dc.contributor.author","Worbes, Martin"],["dc.date.accessioned","2018-11-07T09:15:16Z"],["dc.date.available","2018-11-07T09:15:16Z"],["dc.date.issued","2012"],["dc.description.abstract","For a better understanding of the influence of external growth factors on the wood structure, samples of 139 tropical trees were analysed across plant families and a wide climatic gradient. For all samples a unique data set on climate, site and forest stand conditions is available. Different vessel variables as well as the relative cross-sectional area of vessel, parenchyma and fibre tissue were studied in individual tree rings of varying sizes. High within-species and within-site variation of wood anatomical variables was observed which was higher than inter-species and -site variation. In addition, between-ring variation within many individuals was higher than variation between individuals. The differences within individuals show how trees can adapt or adjust to environmental variability and can provide information about the plasticity of a species under changing environmental conditions. The variable 'vessel diameter' showed the strongest and most significant correlations to other wood anatomical variables, but also to climate parameters and tree morphology. Thereby tree size (DBH & height) and crown exposure to light had the strongest impact on vessel size and consequently on hydraulic stem architecture. General climate conditions only showed a weak influence on vessel variables. The principal component analyses revealed a strong influence of tree morphology and a weaker influence of climate on the hydraulic stem architecture. In contrast the general climatic site conditions strongly influenced fibre and parenchyma tissue."],["dc.description.sponsorship","German Federal Environmental Foundation (DBU)"],["dc.identifier.isi","305198500002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/27641"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Int Assoc Wood Anatomists"],["dc.relation.issn","0928-1541"],["dc.title","WOOD ANATOMICAL VARIABLES IN TROPICAL TREES AND THEIR RELATION TO SITE CONDITIONS AND INDIVIDUAL TREE MORPHOLOGY"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","454"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","461"],["dc.bibliographiccitation.volume","145"],["dc.contributor.author","Schongart, J."],["dc.contributor.author","Piedade, Maria T. F."],["dc.contributor.author","Wittmann, F."],["dc.contributor.author","Junk, W. J."],["dc.contributor.author","Worbes, Martin"],["dc.date.accessioned","2018-11-07T10:56:31Z"],["dc.date.available","2018-11-07T10:56:31Z"],["dc.date.issued","2005"],["dc.description.abstract","Macrolobium acaciifolium (Benth.) Benth. ( Fabaceae) is a dominant legume tree species occurring at low elevations of nutrient-poor black-water (igapo) and nutrient-rich white-water floodplain forests (varzea) of Amazonia. As a consequence of the annual long-term flooding this species forms distinct annual tree rings allowing dendrochronological analyses. From both floodplain types in Central Amazonia we sampled cores from 20 large canopy trees growing at identical elevations with a flood-height up to 7 m. We determined tree age, wood density (WD) and mean radial increment (MRI) and synchronized ring-width patterns of single trees to construct tree-ring chronologies for every study site. Maximum tree age found in the igapo was more than 500 years, contrary to the varzea with ages not older than 200 years. MRI and WD were significantly lower in the igapo ( MRI = 1.52 +/- 0.38 mm year(-1), WD = 0.39 +/- 0.05 g cm(-3)) than in the varzea (MRI = 2.66 +/- 0.67 mm year(-1), WD= 0.45 +/- 0.03 g cm(-3)). In both floodplain forests we developed tree-ring chronologies comprising the period 1857 - 2003 ( n= 7 trees) in the varzea and 1606 - 2003 ( n= 13 trees) in the igapo. The ring-width in both floodplain forests was significantly correlated with the length of the terrestrial phase ( vegetation period) derived from the daily recorded water level in the port of Manaus since 1903. In both chronologies we found increased wood growth during El Nino events causing negative precipitation anomalies and a lower water discharge in Amazonian rivers, which leads to an extension of the terrestrial phase. The climate signal of La Nina was not evident in the dendroclimatic proxies."],["dc.identifier.doi","10.1007/s00442-005-0147-8"],["dc.identifier.isi","232401800012"],["dc.identifier.pmid","16025354"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50033"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0029-8549"],["dc.title","Wood growth patterns of Macrolobium acaciifolium (Benth.) Benth. (Fabaceae) in Amazonian black-water and white-water floodplain forests"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1334"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Journal of Biogeography"],["dc.bibliographiccitation.lastpage","1347"],["dc.bibliographiccitation.volume","33"],["dc.contributor.author","Wittmann, Florian"],["dc.contributor.author","Schoengart, Jochen"],["dc.contributor.author","Montero, Juan Carlos"],["dc.contributor.author","Motzer, Thomas"],["dc.contributor.author","Junk, Wolfgang Johannes"],["dc.contributor.author","Piedade, Maria T. F."],["dc.contributor.author","Queiroz, Helder L."],["dc.contributor.author","Worbes, Martin"],["dc.date.accessioned","2018-11-07T09:28:56Z"],["dc.date.available","2018-11-07T09:28:56Z"],["dc.date.issued","2006"],["dc.description.abstract","Aim: Attention has increasingly been focused on the floristic variation within forests of the Amazon Basin. Variations in species composition and diversity are poorly understood, especially in Amazonian floodplain forests. We investigated tree species composition, richness and alpha diversity in the Amazonian white-water (varzea) forest, looking particularly at: (1) the flood-level gradient, (2) the successional stage (stand age), and (3) the geographical location of the forests. Location: Eastern Amazonia, central Amazonia, equatorial western Amazonia and the southern part of western Amazonia. Methods: The data originate from 16 permanent varzea forest plots in the central and western Brazilian Amazon and in the northern Bolivian Amazon. In addition, revised species lists of 28 varzea forest inventories from across the Amazon Basin were used. Most important families and species were determined using importance values. Floristic similarity between plots was calculated to detect similarity variations between forest types and over geographical distances. To check for spatial diversity gradients, alpha diversity (Fisher) of the plots was correlated with stand age, longitudinal and latitudinal plot location, and flood-level gradient. Results: More than 900 flood-tolerant tree species were recorded, which indicates that Amazonian varzea forests are the most species-rich floodplain forests worldwide. The most important plant families recorded also dominate most Neotropical upland forests, and c. 31% of the tree species listed also occur in the uplands. Species distribution and diversity varied: (1) on the flood-level gradient, with a distinct separation between low-varzea forests and high-varzea forests, (2) in relation to natural forest succession, with species-poor forests in early stages of succession and species-rich forests in later stages, and (3) as a function of geographical distance between sites, indicating an increasing alpha diversity from eastern to western Amazonia, and simultaneously from the southern part of western Amazonia to equatorial western Amazonia. Main conclusions: The east-to-west gradient of increasing species diversity in varzea forests reflects the diversity patterns also described for Amazonian terra firme. Despite the fine-scale geomorphological heterogeneity of the floodplains, and despite high disturbance of the different forest types by sedimentation and erosion, varzea forests are dominated by a high proportion of generalistic, widely distributed tree species. In contrast to high-varzea forests, where floristic dissimilarity increases significantly with increasing distance between the sites, low-varzea forests can exhibit high floristic similarity over large geographical distances. The high varzea may be an important transitional zone for lateral immigration of terra firme species to the floodplains, thus contributing to comparatively high species richness. However, long-distance dispersal of many low-varzea trees contributes to comparatively low species richness in highly flooded low varzea."],["dc.identifier.doi","10.1111/j.1365-2699.2006.01495.x"],["dc.identifier.isi","000238887900003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30902"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Blackwell Publishing"],["dc.relation.issn","0305-0270"],["dc.title","Tree species composition and diversity gradients in white-water forests across the Amazon Basin"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","165"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Plant Ecology"],["dc.bibliographiccitation.lastpage","175"],["dc.bibliographiccitation.volume","168"],["dc.contributor.author","Dezzeo, N."],["dc.contributor.author","Worbes, Martin"],["dc.contributor.author","Ishii, I."],["dc.contributor.author","Herrera, R."],["dc.date.accessioned","2018-11-07T10:37:30Z"],["dc.date.available","2018-11-07T10:37:30Z"],["dc.date.issued","2003"],["dc.description.abstract","The occurrence of seasonal growth rings in the wood of Campsiandra laurifolia, Acosmiun nitens, Pouteria orinocoensis and Psidium ovatifolium, common species growing in the flooding forest of the Mapire river, was analyzed using wood anatomy and ring-width analysis. The test of the annual ring formation was performed using radiocarbon analysis based on the nuclear weapon effect. All species showed growth rings visible to the naked eye. The ring boundaries in all cases were marked by bands of marginal parenchyma. The index ring-width curves of the four studied species showed a strong relationship with the fluctuation of the water river level during the non flooded months, suggesting that an increase in the water level during these months positively influenced the growth indicating that the rings were formed on an annual basis. The content of radiocarbon in the wood of anatomically predated rings of Campsiandra laurifolia and Pouteria orinocoensis confirm these results. All studied trees are slow growing with less than 2.5 mm annual increment."],["dc.identifier.doi","10.1023/A:1024417610776"],["dc.identifier.isi","000183835900013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/45577"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Kluwer Academic Publ"],["dc.relation.issn","1385-0237"],["dc.title","Annual tree rings revealed by radiocarbon dating in seasonally flooded forest of the Mapire River, a tributary of the lower Orinoco River, Venezuela"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]