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Space partitioning among two sympatric species, sand cat (Felis margarita) and Ruppell’s fox (Vulpes rueppellii), in a desert landscape in Central Iran

100%

Akbari Feizabadi H., Naderi M., Ashrafi S., Hemami M. R.

Polish Journal of Ecology

2018

tom 66

nr 2

This study evaluates and compares habitat preferences and spatial niche breadth and overlap between two sympatrically occurring species, the sand cat (Felis margarita) and Rüppell's fox (Vulpes rueppellii), in a desert landscape of central Iran. A field survey from 2014 to 2016 was conducted to collect occurrence points for the two species as well as to identify their structural characteristics of used habitats in the occurrences points. Jacobs' index as a measure of habitat preference, Shannon and Levins' indices as measures of niche breadth, MacArthur, Levins and Pianka's indices as measures of niche overlap were calculated and interpreted. The results of this study showed that the sand cats are specifically restricted to sand dune and sabulous habitat type, whereas Rüppell's foxes have wider ecological amplitude. Sand cats only prefers sand dunes while Rüppell's foxes were found to prefer foothills, badlands, and sand dunes. Rüppell's foxes therefore had a wider niche breadth compared to the sand cats. The asymmetric MacArthur and Levins indices yielded a higher value of niche overlap for the sand cats compared to Rüppell's foxes, while the symmetric Pianka's measure of niche overlap was relatively high for both species. Such habitat preference and niche segregation between the two species may be a result of their feeding habits or the physical protective structure of their habitats attributes.

Effect of vegetation and soil conditions on burrow structure and site selection of rare desert rodent – Iranian jerboa (Allactaga firouzi)

76%

Naderi G., Hemami M. R., Mohammadi S., Riazi B., Karami M., Kaboli M., Alesheikh A. A.

Polish Journal of Ecology

2011

tom 59

nr 2

The Iranian jerboa (Allactaga firouzi Womochel, 1978) is one of the rarest rodent species in the world and it has been reported exclusively from a single site in central Iran. Because of its restricted geographical distribution and habitat degradation, it has been classified as Critically Endangered in the IUCN Red List. From April 2007 to February 2009 on a small area (2200 ha) of semi-arid grazed steppe (altitude 2000 m, surface covered by bare soil and/or scarce shrub and grass vegetation) we studied the architecture structure of burrow system and burrow site selection of Iranian jerboa. Three types of burrows including temporary burrows, winter and s ummer burrows were detected in the studied habitat. Habitat characteristics such as the percentage cover of: bare soil, pebble and cobble and desert plant species like Anabasis aphylla, Artemisis siberi, and Peganum harmala, as well as the selected chemical soil parameters (content of calcium sulfate, calcium carbonate) were measured in the burrow sites and compared with similar variables measured at random plots in the non-burrow sites. The principal component analysis successfully distinguished between the burrow sites and the non-burrow areas. The burrow site selection was mainly influenced by percentage cover of bare soil, vegetation type, soil texture and chemistry.

Ograniczanie wyników

2 Polish Journal of Ecology

2 Hemami M. R.

1 Akbari Feizabadi H.

1 Alesheikh A. A.

1 Ashrafi S.

1 Kaboli M.

1 Karami M.

1 Mohammadi S.

1 Naderi G.

1 Naderi M.

1 Riazi B.

1 2018

1 2011

Wyniki wyszukiwania

Space partitioning among two sympatric species, sand cat (Felis margarita) and Ruppell’s fox (Vulpes rueppellii), in a desert landscape in Central Iran

Effect of vegetation and soil conditions on burrow structure and site selection of rare desert rodent – Iranian jerboa (Allactaga firouzi)