scholarly journals Diversity of Curculionoidea in Humid Rain Forest Canopies of Borneo: A Taxonomic Blank Spot

Diversity ◽  
2018 ◽  
Vol 10 (4) ◽  
pp. 116 ◽  
Author(s):  
Peter Sprick ◽  
Andreas Floren

From 1992 to 2009, 334 trees were sampled by insecticidal knockdown on Borneo, Malaysia. Here, we describe the taxonomic composition of the 9671 specimens and 1589 species Curculionoidea collected (with additional notes on Cerambycidae). We found a largely unknown fauna with an assumed proportion of over 80% of species new to science, including all 33 Apionidae and 26 Ceutorhynchinae species. Specialists could usually identify only a few specimens leaving the remaining beetles for further investigation. The samples contain numerous genera, two tribes (Egriini, Viticiini), one subfamily (Mesoptiliinae) and one family (Belidae) new to Borneo and several genera not recorded west of the Wallace line before. These data show how little is known about canopy diversity. The lack of taxonomic knowledge implies a respective lack of autecological knowledge and is alarming. Some taxa differed conspicuously between primary and disturbed forests. In contrast to common literature, our results let us conclude that current efforts to narrow down the extent of tropical diversity and its ecological importance must consider the enormous species diversity of the canopy.

1991 ◽  
Vol 39 (2) ◽  
pp. 171 ◽  
Author(s):  
Y Basset

The composition of the arthropod fauna foraging within the canopy of Argyrodendron actinophyllum Edlin (Sterculiaceae) in a subtropical rainforest near Brisbane, Australia, was investigated during a 2-year field study. Collecting methods included flight interception traps, restricted canopy fogging, and hand-collecting. Over 50 000 canopy arthropods were collected and about 760 species sorted, from which 660 were identified at least to the generic level by taxonomists. The arthropod fauna of A. actinophyllum is characterised by the abundance of Clubionidae, Theridiidae, Psylloidea, Phlaeothripidae, Chrysomelidae, Corylophidae, Curculionidae and Braconidae, and by the scarcity of Empididae, Symphyta, Ichneumonidae and Formicidae. The major determinants of the composition of the arboreal fauna are discussed, including biogeographical and historical constraints, rainforest mesoclimate and host phenology, host architecture and biochemistry, and intrinsic composition of the foliicolous fauna. The faunistic composition of this subtropical rainforest tree species exhibits several features common to both temperate trees (such as the high numbers of homopterans and spiders and the limited populations of arboreal ants) and tropical rainforest trees (such as the large beetle populations and the high orthopteran biomass).


Biologia ◽  
2008 ◽  
Vol 63 (6) ◽  
Author(s):  
Oxana Vinogradova ◽  
Tatyana Darienko

AbstractIn hypersaline environments of the Churiuk and Kuyuk-Tuk islands located in Central Syvash lagoon (Ukraine) 93 species of oxygenic phototrophs (49 Cyanoprokaryota, 29 Chlorophyta, 12 Bacillariophyta, 2 Xanthophyta, 1 Streptophyta, 1 Eustigmatophyta) are recorded. The sites studied represent four basic types of habitats: semi-terrestrial ecotone (littoral heavy-loam solonchak free of vascular plants), wet gleyic solonchak covered by sparce halophytic vegetation, gleyic solonetz under saline meadow vegetation, and chestnut solonetzic soil with Steppa salsuginosa formation. They differ in the taxonomic composition and species diversity of algae. The highest species diversity is observed at sites of wet gleyic solonchaks (71 species of five divisions), the lowest diversity (23 species belonging to three divisions) in the harsh littoral ecotone. The distribution and abundance of species in the four habitats are discussed with reference to their ecology. Descriptions and original drawings of noteworthy taxa of Chlorophyta and Xanthophyta are presented.


1993 ◽  
Vol 8 (3) ◽  
pp. 104-107 ◽  
Author(s):  
Margaret D. Lowman ◽  
Mark Moffett

2021 ◽  
Vol 22 (4) ◽  
pp. 96-101
Author(s):  
Yu.N. Kurkina ◽  

The taxonomic composition of rhizosphere complexes of microscopic fungi was determined under nine varieties of faba beans grown in small-plot experiments on black soil with a pH of 7.6, ob-serving zonal agricultural techniques (Belgorod, Russia). It was revealed that under different vari-eties of faba beans the list of micromycete species is not the same, but their number is lower than in control soil. The number of micromycete propagules in the rhizosphere of beans (34 ± 1.7 thou-sand CFU / g soil) is on average 2 times higher than in the control soil (17 ± 1.2 thousand CFU / g soil). The greatest species diversity was found in the varieties Velena and Akvadul (18 and 16 species, respectively). The mycocomplexes of the Tsarskiy Yield and Leader varieties were dis-tinguished by the greatest similarity with the control. Phytopathogenic fungi Fusarium oxysporum dominated in the rhizosphere complexes of all studied varieties of vegetable beans, and the spe-cies A. fabaе, C. herbarum, and U. botrytis were present only in the rank of random species in my-cocomplexes under some varieties.


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