Species Diversity of Seed-Eating Desert Rodents in Sand Dune Habitats

Ecology ◽  
1973 ◽  
Vol 54 (4) ◽  
pp. 775-787 ◽  
Author(s):  
James H. Brown
Ecology ◽  
1973 ◽  
Vol 54 (4) ◽  
pp. 788-797 ◽  
Author(s):  
James H. Brown ◽  
Gerald A. Lieberman

1994 ◽  
Vol 21 (5) ◽  
pp. 569 ◽  
Author(s):  
M Predavec

Populations of Pseudomys hermannsburgensis and Notomys alexis were studied during a 33-month period (January 1991 to September 1993) in a sand-dune habitat in south-western Queensland. Population numbers of both species fluctuated dramatically over time with an approximately 40-fold difference between periods of lowest and highest abundance. Increased numbers were due primarily to an influx of juveniles to the population. A high turnover of individuals in both populations resulted in low rates of recapture. Numbers of both species were correlated positively with an index of rainfall with a time-lag of four months. P. hermannsburgensis showed spatial and temporal correlations with seed availability, whereas N. alexis displayed a strong, but non-significant, temporal trend with seed availability. These data suggest strongly that natural irruptions of Australian desert rodents are triggered by rainfall and possibly rain-induced food availability.


1994 ◽  
Vol 42 (4) ◽  
pp. 479 ◽  
Author(s):  
GI Shenbrot ◽  
KA Rogovin ◽  
EJ Heske

We compared patterns of species diversity, locomotory morphology, feeding modes, and spatial organisation for rodent communities in four Asian deserts (Kyzylkum, Gobi, ?Thar, Negev) and one North American (Chihuahuan) desert. Deserts were similar in gamma and alpha diversity. A positive relationship between regional species diversity (and biomass) and mean annual precipitation was found. The Asian deserts showed a greater degree of divergence and specialisation between bipedal and quadrupedal forms. The range of feeding modes was similar in deserts on both continents, but the Negev was the only Asian desert in which granivory was as important as in the Chihuahuan. Temperate Asian desert rodents were organised into spatial guilds, separated primarily by characteristics of the soil and perennial vegetation. North American desert rodent species overlapped more extensively in habitat use. The similarities and differences between these deserts can be explained by their biogeographic histories.


1979 ◽  
Vol 19 (4) ◽  
pp. 1129-1143 ◽  
Author(s):  
JAMES H. BROWN ◽  
DIANE W. DAVIDSON ◽  
O. J. REICHMAN

2018 ◽  
Vol 11 (2) ◽  
pp. 157-172 ◽  
Author(s):  
Víctor Parra-Tabla ◽  
Cristopher Albor-Pinto ◽  
Juan Tun-Garrido ◽  
Diego Angulo-Pérez ◽  
Christian Barajas ◽  
...  

2013 ◽  
Vol 726-731 ◽  
pp. 4390-4396
Author(s):  
De Ming Jiang ◽  
Xue Hua Li ◽  
Chun Ping Miao ◽  
Quan Lai Zhou ◽  
Toshio Oshida

To better understand the succession process of vegetation restoration from the active sand dune to the inter-dune lowland, species diversity which refers to species richness and abundance across scales and along the slope were studies in Horqin Sandy Land, China. A 0.25 ha square sampling plot, which sampled on the ecotone, was divided into five grain sizes and equal distance intervals along the slope from the top to the bottom. The results showed that both species abundance and richness increased as the grain sizes increased and along the slope, but the decreasing CV values indicated that species diversity gradually vary from heterogeneity to relatively homogeneity. In conclusion, species abundance and richness showed asynchronous changes and their relationship are more closely across scales than along the slope. Except that, more studies on the biotic and abiotic factors interaction concerning the vegetation patterns of sand dune ecosystems should be conducted. These could not only improve our understanding the mechanisms of vegetation invasion and succession, but also be beneficial for vegetation management and biodiversity conservation in semi-arid sand dune ecosystems.


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