Homeier, Jürgen

[["dc.bibliographiccitation.firstpage","1434"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Forest Ecology and Management"],["dc.bibliographiccitation.lastpage","1445"],["dc.bibliographiccitation.volume","260"],["dc.contributor.author","Wullaert, Hans"],["dc.contributor.author","Homeier, Juergen"],["dc.contributor.author","Valarezo, Carlos"],["dc.contributor.author","Wilcke, Wolfgang"],["dc.date.accessioned","2018-11-07T08:39:03Z"],["dc.date.available","2018-11-07T08:39:03Z"],["dc.date.issued","2010"],["dc.description.abstract","Atmospheric nitrogen (N) and phosphorus (P) depositions are expected to increase in the tropics as a consequence of increasing human activities in the next decades. In the literature, it is frequently assumed that tropical montane forests are N-limited, while tropical lowland forests are P-limited. In a low-level N and P addition experiment, we determined the short-term response of N and P cycles in a north Andean montane forest on Palaeozoic shists and metasandstones at an elevation of 2100 m a.s.l. to increased N and P inputs. We evaluated experimental N. P and N + P additions (50 kg ha(-1) yr(-1) of N, 10 kg ha(-1) yr(-1) of P and 50 kg + 10 kg ha(-1) yr(-1) of N and P. respectively) and an untreated control in a fourfold replicated randomized block design. We collected litter leachate, mineral soil solution (0.15 and 0.30m depths), throughfall and litterfall before the treatment began (August 2007) until 16 months after the first nutrient application (April 2009). Less than 10 and 1% of the applied N and P. respectively, leached below the organic layer which contained almost all roots and no significant leaching losses of N and P occurred to below 0.15 m mineral soil depth. Deposited N and P from the atmosphere in dry and wet form were retained in the canopy of the control treatment using a canopy budget model. Nitrogen and P retention by the canopy were reduced and N and P fluxes in throughfall and litterfall increased in their respective treatments. The increase in N and P fluxes in throughfall after fertilization was equivalent to 2.5% of the applied N and 2% of the applied P. The fluxes of N and Pin litterfall were up to 15% and 3%, respectively, higher in the N and N + P than in the control treatments. We conclude that the expected elevated N and P deposition in the tropics will be retained in the ecosystem, at least in the short term and hence, N and P concentrations in stream water will not increase. Our results suggest that in the studied tropical montane forest ecosystem on Palaeozoic bedrock, N and P are co-limiting the growth of organisms in the canopy and organic layer. (C) 2010 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","German Research Foundation (DFG) [FOR 816, Wi 1601/8-1]; DAAD"],["dc.identifier.doi","10.1016/j.foreco.2010.07.021"],["dc.identifier.isi","000283458600003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18897"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0378-1127"],["dc.title","Response of the N and P cycles of an old-growth montane forest in Ecuador to experimental low-level N and P amendments"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","33"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Environmental Microbiology Reports"],["dc.bibliographiccitation.lastpage","39"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Martinson, Guntars O."],["dc.contributor.author","Pommerenke, Bianca"],["dc.contributor.author","Brandt, Franziska B."],["dc.contributor.author","Homeier, Jürgen"],["dc.contributor.author","Burneo, Juan I."],["dc.contributor.author","Conrad, Ralf"],["dc.date.accessioned","2021-06-01T10:47:10Z"],["dc.date.available","2021-06-01T10:47:10Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1111/1758-2229.12602"],["dc.identifier.eissn","1758-2229"],["dc.identifier.issn","1758-2229"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/85507"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","1758-2229"],["dc.relation.issn","1758-2229"],["dc.title","Hydrogenotrophic methanogenesis is the dominant methanogenic pathway in neotropical tank bromeliad wetlands"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","13"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Plant Ecology & Diversity"],["dc.bibliographiccitation.lastpage","24"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Salazar, Laura"],["dc.contributor.author","Homeier, Juergen"],["dc.contributor.author","Kessler, Michael"],["dc.contributor.author","Abrahamczyk, Stefan"],["dc.contributor.author","Lehnert, Marcus"],["dc.contributor.author","Kroemer, Thorsten"],["dc.contributor.author","Kluge, Juergen"],["dc.date.accessioned","2018-11-07T10:02:23Z"],["dc.date.available","2018-11-07T10:02:23Z"],["dc.date.issued","2015"],["dc.description.abstract","Background: Biodiversity is perceived to decline from lowlands towards mountain peaks and away from the Equator towards the Poles, but supporting data for most groups of organisms are lacking, especially at the local scale. Aims: Elevational gradients of fern species richness in tropical forest habitats were analysed to test the hypotheses that fern species composition patterns were similar between elevational gradients, that total species richness of complete elevational gradients gradually declined due to changing climatic conditions with increasing distance from the Equator, and that the elevation of highest species richness gradually declined with increasing latitude. Methods: We used plot-based elevational fern species richness surveys compiled from recent field work and own published studies, between 18 degrees N and 18 degrees S along the Andean mountain range, and compared the transects of patterns of species richness and composition, and distribution of taxa. Results: Taxonomic composition was highly similar among tropical regions. Elevational richness patterns were symmetrically hump-shaped and overall richness was virtually equal along most of the tropical latitudinal gradient. In contrast, the subtropical localities at the edges of our study area, ca. 18 degrees N and 18 degrees S, showed strikingly different patterns from those in the tropical zone. Conclusions: Within the tropics, there appears to be no latitudinal diversity gradient of ferns at the local scale. We suggest that, in tropical habitats, species richness of ferns at the local scale is limited by the number of species that can co-occur and that the available niche space is saturated."],["dc.description.sponsorship","Schweizer Nationalfonds (SNF); German Academic Exchange Service (DAAD)"],["dc.identifier.doi","10.1080/17550874.2013.843036"],["dc.identifier.isi","000349391300002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38214"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Taylor & Francis Ltd"],["dc.relation.issn","1755-1668"],["dc.relation.issn","1755-0874"],["dc.title","Diversity patterns of ferns along elevational gradients in Andean tropical forests"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","311"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Mycorrhiza"],["dc.bibliographiccitation.lastpage","319"],["dc.bibliographiccitation.volume","27"],["dc.contributor.author","Delavaux, Camille S."],["dc.contributor.author","Camenzind, Tessa"],["dc.contributor.author","Homeier, Juergen"],["dc.contributor.author","Jimenez-Paz, Rosa"],["dc.contributor.author","Ashton, Mark"],["dc.contributor.author","Queenborough, Simon A."],["dc.date.accessioned","2018-11-07T10:24:29Z"],["dc.date.available","2018-11-07T10:24:29Z"],["dc.date.issued","2017"],["dc.description.abstract","Nitrogen (N) and phosphorus (P) deposition are increasing worldwide largely due to increased fertilizer use and fossil fuel combustion. Most work with N and P deposition in natural ecosystems has focused on temperate, highly industrialized, regions. Tropical regions are becoming more developed, releasing large amounts of these nutrients into the atmosphere. Nutrient enrichment in nutrient-poor systems such as tropical montane forest can represent a relatively large shift in nutrient availability, especially for sensitive microorganisms such as arbuscular mycorrhizal fungi (AMF). These symbiotic fungi are particularly critical, given their key role in ecosystem processes affecting plant community structure and function. To better understand the consequences of nutrient deposition in plant communities, a long-term nutrient addition experiment was set up in a tropical montane forest in the Andes of southern Ecuador. In this study, we investigated the impacts of 7 years of elevated N and P on AMF root colonization potential (AMF-RCP) through a greenhouse bait plant method in which we quantified root colonization. We also examined the relationship between AMF-RCP and rarefied tree diversity. After 7 years of nutrient addition, AMF-RCP was negatively correlated with soil P, positively correlated with soil N, and positively correlated with rarefied tree diversity. Our results show that AMF in this tropical montane forest are directly affected by soil N and P concentrations, but may also be indirectly impacted by shifts in rarefied tree diversity. Our research also highlights the need to fully understand the benefits and drawbacks of using different sampling methods (e.g., AMF-RCP versus direct root sampling) to robustly examine AMF-plant interactions in the future."],["dc.identifier.doi","10.1007/s00572-016-0749-5"],["dc.identifier.isi","000400450400001"],["dc.identifier.pmid","27924430"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42674"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Springer"],["dc.relation.issn","1432-1890"],["dc.relation.issn","0940-6360"],["dc.title","Nutrient enrichment effects on mycorrhizal fungi in an Andean tropical montane Forest"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","887"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","900"],["dc.bibliographiccitation.volume","175"],["dc.contributor.author","Kessler, Michael"],["dc.contributor.author","Guedel, Ramona"],["dc.contributor.author","Salazar, Laura"],["dc.contributor.author","Homeier, Juergen"],["dc.contributor.author","Kluge, Juergen"],["dc.date.accessioned","2018-11-07T09:38:21Z"],["dc.date.available","2018-11-07T09:38:21Z"],["dc.date.issued","2014"],["dc.description.abstract","Mycorrhizal fungi are crucial for the ecological success of land plants, providing their hosts with nutrients in exchange for organic C. However, not all plants are mycorrhizal, especially ferns, of which about one-third of the species lack this symbiosis. Because the mycorrhizal status is evolutionarily ancestral, this lack of mycorrhizae must have ecological advantages, but what these advantages are and how they affect the competitive ability of non-mycorrhizal plants under natural conditions is currently unknown. To address this uncertainty, we studied terrestrial fern assemblages and species abundances as well as their mycorrhization status, leaf nutrient concentration and relative annual growth along an elevational gradient in the Ecuadorian Andes (500-4,000 m). We surveyed the mycorrhizal status of 375 root samples belonging to 85 species, and found mycorrhizae in 89 % of the samples. The degree of mycorrhization decreased with elevation but was unrelated to soil nutrients. Species with mycorrhizae were significantly more abundant than non-mycorrhizal species, but non-mycorrhizal species had significantly higher relative growth and concentrations of leaf N, P, Mg, and Ca. Our study thus shows that despite lower abundances, non-mycorrhizal fern species did not appear to be limited in their growth or nutrient supply relative to mycorrhizal ones. As a basis for future studies, we hypothesize that non-mycorrhizal fern species may be favoured in special microhabitats of the forest understory with high soil nutrient or water availability, or that the ecological benefit of mycorrhizae is not related to nutrient uptake but rather to, for example, pathogen resistance."],["dc.identifier.doi","10.1007/s00442-014-2941-7"],["dc.identifier.isi","000338202600013"],["dc.identifier.pmid","24719210"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33049"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1432-1939"],["dc.relation.issn","0029-8549"],["dc.title","Impact of mycorrhization on the abundance, growth and leaf nutrient status of ferns along a tropical elevational gradient"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","139"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Tropical Ecology"],["dc.bibliographiccitation.lastpage","152"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Wittich, Bärbel"],["dc.contributor.author","Homeier, Jürgen"],["dc.contributor.author","Leuschner, Christoph"],["dc.date.accessioned","2018-07-30T12:38:01Z"],["dc.date.available","2018-07-30T12:38:01Z"],["dc.date.issued","2014"],["dc.description.abstract","Not much is known about the nitrogen (N) uptake capacity and N-form preference of tropical trees. In a replicated labelling experiment with 15N-ammonium, 15N-nitrate and dual-labelled glycine applied to saplings of six tree species from southern Ecuadorian montane forests, we tested the hypotheses that (1) the saplings of tropical trees are capable of using organic N even though they are forming arbuscular mycorrhizas, and (2) with increasing altitude, tree saplings increasingly prefer ammonium and glycine over nitrate due to reduced nitrification and growing humus accumulation. Three- to 5-y-old saplings of two species each from 1000, 2000 and 3000 m asl were grown in pots inside the forest at their origin and labelled with non-fertilizing amounts of the three N forms; 15N enrichment was detected 5 days after labelling in fine roots, coarse roots, shoots and leaves. The six species differed with respect to their N-form preference, but neither the abundance of ammonium and nitrate in the soil nor altitude (1000–3000 m asl) seemed to influence the preference. Two species (those with highest growth rate) preferred NH4+ over NO3−, while the other four species took up NO3− and NH4+ at similar rates when both N forms were equally available. After 13C-glycine addition, 13C was significantly accumulated in the biomass of three species (all species with exclusively AM symbionts) but a convincing proof of the uptake of intact glycine molecules by these tropical montane forest trees was not obtained."],["dc.identifier.doi","10.1017/S0266467414000650"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15214"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Ammonium, nitrate and glycine uptake of six Ecuadorian tropical montane forest tree species: an in situ pot experiment with saplings"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","57"],["dc.bibliographiccitation.journal","Review of Palaeobotany and Palynology"],["dc.bibliographiccitation.lastpage","69"],["dc.bibliographiccitation.volume","193"],["dc.contributor.author","Jantz, Nele"],["dc.contributor.author","Homeier, Juergen"],["dc.contributor.author","Leon-Yanez, Susana"],["dc.contributor.author","Moscoso, Alejandra"],["dc.contributor.author","Behling, Hermann"],["dc.date.accessioned","2018-11-07T09:23:39Z"],["dc.date.available","2018-11-07T09:23:39Z"],["dc.date.issued","2013"],["dc.description.abstract","The analysis of modern pollen rain is an important prerequisite for detailed and comprehensive studies on fossil pollen assemblages, as it is necessary for obtaining valuable information about present pollen spectra in a more quantitative way. At present, several sampling media are used for modern pollen rain collection in tropical environments, without knowing a lot about their trapping properties. We compared modern pollen rain spectra of different pollen rain sampling media along an altitudinal gradient from ca. 1000 to ca. 3300 m a.s.l. in southern Ecuador. The vegetation types covered are premontane forest, lower montane forest, upper montane forest and paramo. Pollen assemblage composition, representation, diversity and palynological abundance in the modern pollen spectra of Behling traps, modified Oldfield traps, reference traps and soil samples were assessed in comparison to the vegetation. All sampling media showed distinguishable pollen spectra for each vegetation type. For the param, the most characterising taxa are Poaceae and Melastomataceae, accompanied by other, less frequent taxa such as Arcytophyllum, Valeriana and Ericaceae. The pollen spectrum of the upper montane forest is dominated by Melastomataceae, Hedyosmum and Weinmannia. The lower montane and premontane forests both have similar spectra, with high proportions of Moraceae/Urticaceae, Melastomataceae, Alchornea and Cecropia. Soil samples had a bias towards an over-representation of pollen and spore taxa with a thick exine, such as Poaceae, whereas taxa with fragile pollen grains, as Moraceae/Urticaceae, were represented to a lesser extent than in the pollen traps. Behling traps and modified Oldfield traps show similar patterns in taxa composition, pollen accumulation rates and pollen taxa proportions, as well as in representation of pollen spectra in comparison with the vegetation. However, especially in the paramo samples, modified Oldfield traps were disintegrated after one year in the field, due to temporarily dry and windy conditions, as well as strong radiation. We therefore recommend the use of Behling traps for the collection of modern pollen rain in areas with open vegetation, which are subjected to drought periods and strong radiation. In forested areas, modified Oldfield and Behling traps show similar results. (C) 2013 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","DFG [FOR 816, BE2116/8-2, HO3296/2-2]"],["dc.identifier.doi","10.1016/j.revpalbo.2013.01.011"],["dc.identifier.isi","000320089700004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29629"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0034-6667"],["dc.title","Trapping pollen in the tropics - Comparing modern pollen rain spectra of different pollen traps and surface samples across Andean vegetation zones"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0263508"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Báez, Selene"],["dc.contributor.author","Fadrique, Belén"],["dc.contributor.author","Feeley, Kenneth"],["dc.contributor.author","Homeier, Jürgen"],["dc.date.accessioned","2022-05-02T08:09:27Z"],["dc.date.available","2022-05-02T08:09:27Z"],["dc.date.issued","2022"],["dc.description.abstract","Understanding variation in tree functional traits along topographic gradients and through time provides insights into the processes that will shape community composition and determine ecosystem functioning. In montane environments, complex topography is known to affect forest structure and composition, yet its role in determining trait composition, indices on community climatic tolerances, and responses to changing environmental conditions has not been fully explored. This study investigates how functional trait composition (characterized as community-weighted moments) and community climatic indices vary for the tree community as a whole and for its separate demographic components (i.e., dying, surviving, recruiting trees) over eight years in a topographically complex tropical Andean forest in southern Ecuador. We identified a strong influence of topography on functional composition and on species’ climatic optima, such that communities at lower topographic positions were dominated by acquisitive species adapted to both warmer and wetter conditions compared to communities at upper topographic positions which were dominated by conservative cold adapted species, possibly due to differences in soil conditions and hydrology. Forest functional and climatic composition remained stable through time; and we found limited evidence for trait-based responses to environmental change among demographic groups. Our findings confirm that fine-scale environmental conditions are a critical factor structuring plant communities in tropical forests, and suggest that slow environmental warming and community-based processes may promote short-term community functional stability. This study highlights the need to explore how diverse aspects of community trait composition vary in tropical montane forests, and to further investigate thresholds of forest response to environmental change."],["dc.description.abstract","Understanding variation in tree functional traits along topographic gradients and through time provides insights into the processes that will shape community composition and determine ecosystem functioning. In montane environments, complex topography is known to affect forest structure and composition, yet its role in determining trait composition, indices on community climatic tolerances, and responses to changing environmental conditions has not been fully explored. This study investigates how functional trait composition (characterized as community-weighted moments) and community climatic indices vary for the tree community as a whole and for its separate demographic components (i.e., dying, surviving, recruiting trees) over eight years in a topographically complex tropical Andean forest in southern Ecuador. We identified a strong influence of topography on functional composition and on species’ climatic optima, such that communities at lower topographic positions were dominated by acquisitive species adapted to both warmer and wetter conditions compared to communities at upper topographic positions which were dominated by conservative cold adapted species, possibly due to differences in soil conditions and hydrology. Forest functional and climatic composition remained stable through time; and we found limited evidence for trait-based responses to environmental change among demographic groups. Our findings confirm that fine-scale environmental conditions are a critical factor structuring plant communities in tropical forests, and suggest that slow environmental warming and community-based processes may promote short-term community functional stability. This study highlights the need to explore how diverse aspects of community trait composition vary in tropical montane forests, and to further investigate thresholds of forest response to environmental change."],["dc.identifier.doi","10.1371/journal.pone.0263508"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/107383"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-561"],["dc.relation.eissn","1932-6203"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Changes in tree functional composition across topographic gradients and through time in a tropical montane forest"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","347"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Erdkunde"],["dc.bibliographiccitation.lastpage","364"],["dc.bibliographiccitation.volume","63"],["dc.contributor.author","Dislich, Claudia"],["dc.contributor.author","Guenter, Sven"],["dc.contributor.author","Homeier, Juergen"],["dc.contributor.author","Schroeder, Boris"],["dc.contributor.author","Huth, Andreas"],["dc.date.accessioned","2018-11-07T11:23:30Z"],["dc.date.available","2018-11-07T11:23:30Z"],["dc.date.issued","2009"],["dc.description.abstract","The montane forests of Ecuador are part of one of the world's hotspots of biodiversity and they also suffer the highest deforestation rate amongst South American countries. The processes that drive the dynamics of these highly diverse ecosystems are poorly understood. This is particularly true for transient dynamics, which are crucial for the protection and sustainable management of such forests. Dynamic simulation models, can be used to anal use the growth of forests, but so far they have been applied mostly to temperate forests and to some few tropical lowland forests. In this study we investigate whether a process-based, individual-oriented simulation model like FORMIND is capable of reproducing the dynamics of tropical montane forests. For this purpose develop a parameterisation for the model and validate the model against field observations of different (structural) patterns. We then analyse the predicted succession dynamics. The model is capable of reproducing the structure and dynamics of mature ridge forest on different levels of complexity. The main results indicate that, in terms of relative abundances of different: species groups and stern size distribution in the tree community, our model predicts the observed patterns in the field. Additional field studies and model modifications are required to simulate the succession processes that follow different types of disturbances. FORMIND is a promising tool for the extrapolation of local measurements and for simulating the dynamics of tropical montane forests. Parameterisations of the model for further forest types within the research area are intended. The model has a number of potential applications, ranging from investigating the impact of (different) natural disturbances on forest structure and tree species diversity to analysing-different potential management strategies."],["dc.identifier.doi","10.3112/erdkunde.2009.04.05"],["dc.identifier.isi","000273971900005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56212"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Boss Druck Medien Gmbh"],["dc.relation.issn","0014-0015"],["dc.title","SIMULATING FOREST DYNAMICS OF A TROPICAL MONTANE FOREST IN SOUTH ECUADOR"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","83"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Erdkunde"],["dc.bibliographiccitation.lastpage","106"],["dc.bibliographiccitation.volume","70"],["dc.contributor.author","Tiede, Yvonne"],["dc.contributor.author","Homeier, Juergen"],["dc.contributor.author","Cumbicus, Nixon"],["dc.contributor.author","Pena, Jaime"],["dc.contributor.author","Albrecht, Joerg"],["dc.contributor.author","Ziegenhagen, Birgit"],["dc.contributor.author","Bendix, Joerg"],["dc.contributor.author","Brandl, Roland"],["dc.contributor.author","Farwig, Nina"],["dc.date.accessioned","2018-11-07T10:20:40Z"],["dc.date.available","2018-11-07T10:20:40Z"],["dc.date.issued","2016"],["dc.description.abstract","Phylogenetic niche conservatism (PNC) is the tendency of species within a clade to retain ancestral traits and to persist in their primary ecological niches on geological time scales. It links evolutionary and ecological processes and has been hypothesized to explain patterns of species richness and the composition of species assemblages. Decreasing patterns of species richness along latitudinal gradients were often explained by the combination of ancient tropical climates, trait retention of tropical lineages and environmental filtering. PNC also predicts decreasing phylodiversity and family age with decreasing tropicality and has been invoked to explain these patterns along climatic gradients across latitudinal as well as elevational gradients. However, recent studies on tree assemblages along latitudinal and elevational gradients in South America found patterns contradicting the PNC framework. Our study aims to shed light on these contradictions using three different metrics of the phylogenetic composition that form a gradient from recent evolutionary history to deep phylogenetic relationships. We analyzed the relationships between elevation and taxonomic species richness, phylodiversity and family age of tree assemblages in Andean rainforests in Ecuador. In contrast to predictions of the PNC we found no associations of elevation with species richness of trees and increasing clade level phylodiversity and family age of the tree assemblages with elevation. Interestingly, we found that patterns of phylodiversity across the studied elevation gradient depended especially on the deep nodes in the phylogeny. We therefore suggest that the dispersal of evolutionarily old plant lineages with extra-tropical origins influences the recent composition of tree assemblages in the Andes. Further studies spanning broader ecological gradients and using better resolved phylogenies to estimate family and species ages are needed to obtain a deeper mechanistic understanding of the processes that drive the assembly of tree communities along elevational gradients."],["dc.identifier.doi","10.3112/erdkunde.2016.01.06"],["dc.identifier.isi","000372755400006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41934"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Boss Druck Medien Gmbh"],["dc.relation.issn","0014-0015"],["dc.title","PHYLOGENETIC NICHE CONSERVATISM DOES NOT EXPLAIN ELEVATIONAL PATTERNS OF SPECIES RICHNESS, PHYLODIVERSITY AND FAMILY AGE OF TREE ASSEMBLAGES IN ANDEAN RAINFOREST"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]