scholarly journals How Habitat Change and Rainfall Affect Dung Beetle Diversity in Caatinga, a Brazilian Semi-Arid Ecosystem

2011 ◽  
Vol 11 (114) ◽  
pp. 1-11 ◽  
Author(s):  
Carolina Nunes Liberal ◽  
Ângela Maria Isidro de Farias ◽  
Marcos Vinicius Meiado ◽  
Bruno K. C. Filgueiras ◽  
Luciana Iannuzzi
Keyword(s):  
Dung Beetle ◽  
Habitat Change ◽  
Arid Ecosystem ◽  
Semi Arid

scholarly journals Global‐scale characterization of turning points in arid and semi‐arid ecosystem functioning

2020 ◽  
Vol 29 (7) ◽  
pp. 1230-1245 ◽  
Author(s):  
Paulo N. Bernardino ◽  
Wanda De Keersmaecker ◽  
Rasmus Fensholt ◽  
Jan Verbesselt ◽  
Ben Somers ◽  
...  
Keyword(s):  
Ecosystem Functioning ◽  
Turning Points ◽  
Global Scale ◽  
Arid Ecosystem ◽  
Scale Characterization ◽  
Semi Arid

scholarly journals Impact of seasonal changes on fungal diversity of a semi-arid ecosystem revealed by 454 pyrosequencing

2015 ◽  
Vol 91 (5) ◽  
Author(s):  
Lluvia Vargas-Gastélum ◽  
Adriana L. Romero-Olivares ◽  
Ana E. Escalante ◽  
Axayácatl Rocha-Olivares ◽  
Carlos Brizuela ◽  
...  
Keyword(s):  
Seasonal Changes ◽  
Fungal Diversity ◽  
454 Pyrosequencing ◽  
Arid Ecosystem ◽  
Semi Arid

Response of dung beetle taxonomic and functional diversity to livestock grazing in an arid ecosystem

2020 ◽  
Author(s):  
Celeste Beatriz Guerra Alonso ◽  
Gustavo Andrés Zurita ◽  
Maria Isabel Bellocq
Keyword(s):  
Functional Diversity ◽  
Dung Beetle ◽  
Livestock Grazing ◽  
Arid Ecosystem

Major Constituents of the Foliar Epicuticular Waxes of Species from the Caatinga and Cerrado

2000 ◽  
Vol 55 (9-10) ◽  
pp. 688-692 ◽  
Author(s):  
Antonio F. M. Oliveira ◽  
Antonio Salatino
Keyword(s):  
Ursolic Acid ◽  
Native Plants ◽  
Northeast Brazil ◽  
Arid Ecosystem ◽  
Epicuticular Waxes ◽  
Evergreen Species ◽  
Semi Arid

Abstract The epicuticular waxes of leaves of four species (Aspidospermci pyrifolium, Capparis yco, Maytenus rigida and Ziziphus joazeiro) from the Caatinga, (a semi-arid ecosystem of Northeast Brazil) and four species (Aristolochia esperanzae, Didymopanax vinosum, Strychnos pseudoquina and Tocoyena formosa) from the Cerrado, (a savanna ecosystem covering one third of the Brazilian territory), were analyzed. Six species contained a high content (above 60 μg.cm-2) of wax, four of them from the Caatinga. Triterpenoids and n-alkanes were the most frequent and abundant constituents found in the species from both habitats. The distribution of n-alkanes predominated by homologues with 27, 29, 31 and 33 carbon atoms, displayed no consistent differences between species from the two habitats. Lupeol, β-amyrin, epifriedelinol and ursolic acid were the triterpenoids found. Triterpenoids clearly predominate over alkanes in the waxes from the Cerrado species. The waxes of two evergreen species from the Caatinga yielded n-alkanes as predominant constituents. A comparison of foliar epicuticular waxes of native plants from ecosystems with different hydric constraints is discussed.

scholarly journals Effects of single and repeated drought on soil microarthropods in a semi-arid ecosystem depend more on timing and duration than drought severity

PLoS ONE ◽  
2019 ◽  
Vol 14 (7) ◽  
pp. e0219975 ◽  
Author(s):  
Norbert Flórián ◽  
Márta Ladányi ◽  
András Ittzés ◽  
György Kröel-Dulay ◽  
Gábor Ónodi ◽  
...  
Keyword(s):  
Drought Severity ◽  
Arid Ecosystem ◽  
Soil Microarthropods ◽  
Semi Arid

scholarly journals The impact of precipitation change on nitrogen cycling in a semi-arid ecosystem

2014 ◽  
Vol 28 (6) ◽  
pp. 1534-1544 ◽  
Author(s):  
Melissa A. Cregger ◽  
Nate G. McDowell ◽  
Robert E. Pangle ◽  
William T. Pockman ◽  
Aimée T. Classen
Keyword(s):  
Nitrogen Cycling ◽  
Precipitation Change ◽  
Arid Ecosystem ◽  
The Impact ◽  
Semi Arid
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