TY  - JOUR
A1  - Schwarzer, Christian
A1  - Huamani, Fatima Cßceres
A1  - Cano, Asunción
A1  - La Torre, María I. La
A1  - Weigend, Maximilian
T1  - 400 years for long-distance dispersal and divergence in the northern atacama desert : insights from the Huaynaputina pumice slopes of Moquegua, Peru
N2  - The Huaynaputina eruption (1600 AD, Moquegua, S Peru) in the northern Atacama Desert denuded the Ornate area of all vegetation and deposited deep pumice layers. Data on the flora, climate and soil characteristics of these slopes near Ornate at 1600-2600 m a.s.l. are provided. Fifty-nine angiosperm species established themselves on the pumice slopes in the past ca. 400 years, with the bulk of the small and herbaceous species and several species new records for Peru. Three Ornate sites were sampled in both a dry and a wet year and species numbers differed widely (14 versus 45 spp.). Among areas compared floristic composition is most similar to the Lomas de Tacna, and has less in common with geographically closer Lomas or Sierra formations. Nine species represent highly disjunct populations (200->700 km) from their nearest known living populations in central Peru, Chile, or Argentina/Bolivia and appear to have reached the area via long-distance dispersal. Abiotic conditions may have played an important role in limiting the establishment of species from the neighboring vegetation. Four taxa on the pumice slopes show clear morphological differences to populations elsewhere, two of them may represent neoendemics of the Ornate pumice, indicating rapid morphological divergence. (C) 2010 Elsevier Ltd. All rights reserved.
Y1  - 2010
U6  - https://doi.org/10.1016/j.jaridenv.2010.05.034
SN  - 0140-1963
ER  - 
TY  - JOUR
A1  - Abrahamczyk, Stefan
A1  - Lozada Gobilard, Sissi Donna
A1  - Ackermann, Markus
A1  - Fischer, Eberhard
A1  - Krieger, Vera
A1  - Redling, Almut
A1  - Weigend, Maximilian
T1  - A question of data quality-Testing pollination syndromes in Balsaminaceae
JF  - PLoS one
N2  - Pollination syndromes and their predictive power regarding actual plant-animal interactions have been controversially discussed in the past. We investigate pollination syndromes in Balsaminaceae, utilizing quantitative respectively categorical data sets of flower morphometry, signal and reward traits for 86 species to test for the effect of different types of data on the test patterns retrieved. Cluster Analyses of the floral traits are used in combination with independent pollinator observations. Based on quantitative data we retrieve seven clusters, six of them corresponding to plausible pollination syndromes and one additional, well-supported cluster comprising highly divergent floral architectures. This latter cluster represents a non-syndrome of flowers not segregated by the specific data set here used. Conversely, using categorical data we obtained only a rudimentary resolution of pollination syndromes, in line with several earlier studies. The results underscore that the use of functional, exactly quanitified trait data has the power to retrieve pollination syndromes circumscribed by the specific data used. Data quality can, however, not be replaced by sheer data volume. With this caveat, it is possible to identify pollination syndromes from large datasets and to reliably extrapolate them for taxa for which direct observations are unavailable.
Y1  - 2017
U6  - https://doi.org/10.1371/journal.pone.0186125
SN  - 1932-6203
VL  - 12
PB  - PLoS
CY  - San Fransisco
ER  -