This change can be related to leaf size and shape, shoot orientation, internode length or the production of adventitious roots ( Goebel, 1889 Zotz et al., 2011). Heteroblasty is defined as an abrupt change in morphology in the ontogenetic development of a plant. Therefore, at a certain ontogenetic stage, a tipping point was reached when the tank form was even favourable in terms of light capture as it was associated with fewer leaves.Ĭonclusions The effects of changes in leaf morphology and leaf architecture on plant light capture may explain the common occurrence of heteroblastic species in the understorey of Neotropical forests, which does not negate a simultaneous positive effect of heteroblasty on plant water relations.Ītmospherics, leaf display efficiency, Guzmania lingulata, Guzmania monostachia, heteroblasty, plant architecture, self-shading, tank, understorey, Vriesea heliconioides, Vriesea sanguinolenta, Yplant INTRODUCTION Modelling plant morphology that continuously followed the ontogenetic trajectories of the leaf architectural traits revealed that the rising total leaf number in atmospheric individuals constantly increased self-shading. This supports the hypothesis that species from the light-limited understorey benefit from the early atmospheric life form through increased light capture. Key Results Modifying existing plant morphologies showed that broader leaves cause more self-shading within the plant. This allowed the determination of leaf display efficiencies as well as a systematic analysis of leaf architectural traits and their effect on light interception. Methods A functional structural plant model (Yplant) was used to construct digital replicas of atmospheric and tank-forming individuals of four species, two of them naturally growing in exposed conditions and two occurring in understorey sites. The morphological changes and their effect on light interception may be especially relevant for heteroblastic species in the moist understorey, which are expected to be limited primarily by light. Apart from its fundamental effect on plant water relations, the associated transition from narrow to broader leaves also affects plant architecture. During the ontogeny of many epiphytic Tillandsioids (Bromeliaceae), such a change occurs when small individuals transform into larger, tank-forming individuals that are capable of external water storage. If EpiList 1.0 is a major part of the data analyzed in your study, you may consider inviting the EpiList 1.0 core team as collaborators.Background and Aims The functional relevance of heteroblasty, an abrupt morphological change in the ontogeny of a considerable number of angiosperm species, is still largely unresolved. When you use the data in your publication, we request that you cite this data paper.
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We release these data into the public domain under a Creative Commons Zero license waiver. Thus, initiating a well-founded discussion was one of the motivations for compiling this database our list represents 31,311 hypotheses on the life form of plant species, and we welcome feedback on possible omission or erroneous inclusions. Since the epiphytic growth blends into soil-rooted growth and vice versa, the inclusion or exclusion of particular species in the current list will sometimes be contentious. At the same time, the list represents work in progress: species descriptions of epiphytic taxa are ongoing and published life form information in floristic inventories and trait and distribution databases is often incomplete and sometimes even wrong. EpiList 1.0 will be a rich source for synthetic studies in ecology, biogeography, and evolutionary biology as it offers, for the first time, a species-level overview over all currently known vascular epiphytes. For all species, author names and IDs for World Flora Online entries are provided to facilitate the alignment with other plant databases, and to avoid ambiguities. In cases of species missing from these databases, we used other databases (mostly World Checklist of Selected Plant Families ). Species names were standardized against World Flora Online for seed plants and against the World Ferns database for lycophytes and ferns. Based on 978 references, the checklist includes >31,000 species of 79 plant families. We include obligate epiphytes, facultative epiphytes, and hemiepiphytes, as the latter share the vulnerable epiphytic stage as juveniles.
Here, we present EpiList 1.0, the first global list of vascular epiphytes based on standardized definitions and taxonomy.
However, to date, there is no comprehensive list of vascular epiphyte species. Epiphytes make up roughly 10% of all vascular plant species globally and play important functional roles, especially in tropical forests.
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