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How plants shape the ant community in the Amazonian rainforest canopy: the key role of extrafloral nectaries and homopteran honeydew
TLDR
It is hypothesized that the high availability of homopteran honeydew provides a key resource for ant mosaics, where dominant ant colonies and species maintain mutually exclusive territories on trees. Expand
A spatial model of tree α-diversity and tree density for the Amazon
Large-scale patterns of Amazonian biodiversity have until now been obscured by a sparse and scattered inventory record. Here we present the first comprehensive spatial model of tree α-diversity andExpand
Remarks on karyological differentiation patterns in tropical woody plants
  • W. Morawetz
  • Biology
  • Plant Systematics and Evolution
  • 1 March 1986
TLDR
Karyomorphology suggests a new systematic arrangement for the Laurales, a new circumscription of theCymbopetalum tribe (Annonaceae), and a placement of theCochlospermaceae/Bixaceae in theViolales. Expand
Karyology and Cytogenetics
TLDR
This work has shown that banding methods which use dyes specific to DNA base pairs, partly combined with in situ hybridization techniques, now become applicable to a wider range of organisms. Expand
Karyosystematics and evolution of AustralianAnnonaceae as compared withEupomatiaceae, Himantandraceae, andAustrobaileyaceae
  • W. Morawetz
  • Biology
  • Plant Systematics and Evolution
  • 1 March 1988
TLDR
Three main types of floral development inAnnonaceae are proposed, the most elaborated one found in the fly pollinated genusPseuduvaria, and various morphological characters which point to a close alliance with the Australian endemic genera Fitzalania andHaplostichanthus and the American genus pairSapranthus/Desmopsis. Expand
Species richness and distribution patterns of leaf-inhabiting endophytic fungi in a temperate forest canopy
TLDR
Most endophytes proved to be ubiquitous within the canopy of the investigation site, but habitat preferences in terms of different tree species, different light regimes and season (sampling times) were obvious for some abundantendophytes. Expand
Systematics and karyoevolution inMagnoliidae:Tetrameranthus as compared with otherAnnonaceae genera of the same chromosome number
  • W. Morawetz
  • Biology
  • Plant Systematics and Evolution
  • 1 March 1986
TLDR
A detailed karyomorphological comparison, including karyotypes, banding patterns, condensing behaviour of chromosomes and structure of interphase nuclei reveals that the closely related generaAnnona andRollinia are almost identical in their diploid genomes, whereas the polyploid ones differ in their heterochromatin (=hc) composition and number of NO-chromosomes. Expand
A new pollen type, C-banded and fluorochrome counterstained chromosomes, and evolution inGuatteria and related genera (Annonaceae)
TLDR
The evolutionary pattern of the Guatteria group is discussed and compared with other genera and families. Expand
Pollen ultrastructure and systematic affinities ofAnaxagorea (Annonaceae)
TLDR
LM, SEM and TEM observations document similar palynological features for paleo- and neotropical species of Anaxagorea, offering convincing proof for the sometimes questioned systematic and phylogenetic coherence of the widely disjunct S. & C. Asian members of the Fusaea subfamily. Expand
Karyological differentiation in Sapindaceae with special reference to Serjania and Cardiospermum
TLDR
New chromosome counts for 9 species and 2 genera of Sapindaceae are presented and compared with a review of all available chromosome numbers of the family and the obvious lack of polyploid series and the karyological evolution within the family is discussed. Expand
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