Draft:Tympanocryptis pinguicolla: Difference between revisions
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Found in natural temperate grasslands, dominated by wallaby grasses (Austrodanthonia spp.), spear grasses (Austrostipa spp.), tussock grasses (Poa spp.) and possibly Kangaroo Grass (Themeda triandra). Less than 1% of native temperate grasslands remain. Preferring sites with both taller tussock and shorter grasses. |
Found in natural temperate grasslands, dominated by wallaby grasses (Austrodanthonia spp.), spear grasses (Austrostipa spp.), tussock grasses (Poa spp.) and possibly Kangaroo Grass (Themeda triandra). Less than 1% of native temperate grasslands remain. Preferring sites with both taller tussock and shorter grasses. |
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Loss of habitat has seen numbers drop dramatically after European settlement. |
Loss of habitat has seen numbers drop dramatically after European settlement. Sustained high-intensity grazing that leaves little or no ground cover is likely detrimental, particularly in areas with few surface rocks. <ref name=":0" /> Generally not present where native grassland has been substantially modified through cultivation (ploughing or cropping). |
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Cultivation results in changes to plant species composition, structure and possibly food availability (arthropods) that is likely to result in severe degradation or complete removal of suitable habitat for the species. |
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Known to make use of arthropod burrows (in ACT) but also shelters beneath rocks (in Vic). Shelter sites may vary with season and local environmental conditions. Soil disturbance, such as ploughing or compaction, might also result in destruction of arthropod burrows (shelter sites) and possibly a reduction in the abundance, at least in the short-term, of burrow forming arthropods. [[File:P_Robertson_-_2009.png|thumb|Map of south-eastern Australia indicating extant (<>red) and historical (<>pink) populations of theGrassland Earless Dragon.]] |
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"Observations indicate that arthropod burrows, surface rocks, or other similar refuge sites may be necessary for the continued persistence of populations of dragons, by providing thermal refugia (Nelson 2004)."<ref name=":0" /> |
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"The Grassland Earless Dragon is known to make use of arthropod burrows in the ACT region but also shelters beneath rocks in Victoria. The use of various shelter sites may vary with season and local environmental conditions, and individuals have been observed to move between natural burrows and between artificial burrows."<ref name=":0" /> |
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Sustained high-intensity grazing that leaves little or no ground cover is likely to be detrimental, particularly in areas with few surface rocks. <ref name=":0" /> |
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"Grassland Earless Dragons are generally not present where native grassland has been substantially modified through cultivation (ploughing or cropping). Cultivation results in changes to plant species composition, structure and possibly food availability (arthropods) that is likely to result in severe degradation or complete removal of suitable habitat for the species. Soil disturbance, such as ploughing or compaction, might also result in destruction of arthropod burrows (shelter sites) and possibly a reduction in the abundance, at least in the short-term, of burrow forming arthropods. However, Grassland Earless Dragons have been recorded in areas that have been ploughed in the past, but still support native grassland and are adjacent to high quality habitat. Observations indicate that arthropod burrows, surface rocks, or other similar refuge sites may be necessary for the continued persistence of populations of dragons, by providing thermal refugia (Nelson 2004)."<ref name=":0" /> |
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[[File:P_Robertson_-_2009.png|thumb|Map of south-eastern Australia indicating extant (<>red) and historical (<>pink) populations of theGrassland Earless Dragon.]] |
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== References == |
== References == |
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Revision as of 07:58, 11 May 2018
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Last edited by Halalananaba (talk | contribs) 6 years ago. (Update) |
Tympanocryptis pinguicolla (common name: grassland earless dragon) is recognised as an endangered species.
Found in natural temperate grasslands, dominated by wallaby grasses (Austrodanthonia spp.), spear grasses (Austrostipa spp.), tussock grasses (Poa spp.) and possibly Kangaroo Grass (Themeda triandra). Less than 1% of native temperate grasslands remain. Preferring sites with both taller tussock and shorter grasses.
Loss of habitat has seen numbers drop dramatically after European settlement. Sustained high-intensity grazing that leaves little or no ground cover is likely detrimental, particularly in areas with few surface rocks. [1] Generally not present where native grassland has been substantially modified through cultivation (ploughing or cropping).
Cultivation results in changes to plant species composition, structure and possibly food availability (arthropods) that is likely to result in severe degradation or complete removal of suitable habitat for the species.
Known to make use of arthropod burrows (in ACT) but also shelters beneath rocks (in Vic). Shelter sites may vary with season and local environmental conditions. Soil disturbance, such as ploughing or compaction, might also result in destruction of arthropod burrows (shelter sites) and possibly a reduction in the abundance, at least in the short-term, of burrow forming arthropods.
"Observations indicate that arthropod burrows, surface rocks, or other similar refuge sites may be necessary for the continued persistence of populations of dragons, by providing thermal refugia (Nelson 2004)."[1]
"May survive short-term disturbance from fire (Nelson et al. 1998a)." [1]
Range in size from 50-70 mm snout-vent length, with a head to tail length generally less than 150 mm.
Lay 3-6 eggs in late spring or early summer. Young hatch in late summer (possibly disperse soon after hatching), grow to adult size rapidly (by late autumn-early winter), mate the following spring, and often die within one year of birth. Can reach the age of 5 within captivity.
Females are oviparous.
References
[1]Cite error: There are <ref> tags on this page without content in them (see the help page).
[2]
- REDIRECT [[1]]