scholarly journals The Distribution and Population Density of the Threatened Species Rana porosa brevipoda and Conditions of Paddies as Frog Habitats in the Ina Basin, Nagano Prefecture, in Central Japan

2001 ◽  
Vol 65 (5) ◽  
pp. 517-522 ◽  
Author(s):  
Keita SUZUKI ◽  
Kumiko OKUBO ◽  
Takuo SAWAHATA
Keyword(s):  
Population Density ◽  
Threatened Species ◽  
Central Japan ◽  
Nagano Prefecture

scholarly journals A giant termite of the genus Gyatermes from the late Miocene of Nagano Prefecture, Japan (Isoptera)

2015 ◽  
pp. 1
Author(s):  
Michael S. Engel ◽  
Toshiaki Tanaka
Keyword(s):  
New Species ◽  
Late Miocene ◽  
Central Japan ◽  
Nagano Prefecture ◽  
Late Neogene ◽  
Neogene Sediments ◽  
A New Species

A new species of the termite genus <em>Gyatermes</em> Engel &amp; Gross (Archotermopsidae) is described and figured from a beautifully preserved forewing in late Neogene sediments of Nagano Prefecture, central Japan.  The approximately 27-mm long forewing of <em><strong>Gyatermes naganoensis</strong></em> Engel &amp; Tanaka, new species, is preserved in Late Miocene (late Messinian) mudstone of the Ogawa Formation (<em>ca</em>. 6 Ma), and is distinguished from its slightly older and larger congener <em>G. styriensis</em> Engel &amp; Gross, from the early Tortonian of Styria, Austria.  Comments are provided regarding the paleoclimatic implications of a giant termite in the Miocene fauna of Nagano.

Using faecal pellet counts along transects to estimate quokka (Setonix brachyurus) population density

2005 ◽  
Vol 32 (6) ◽  
pp. 503 ◽  
Author(s):  
Matt W. Hayward ◽  
Paul J. de Tores ◽  
Michael J. Dillon ◽  
Barry J. Fox ◽  
Peter B. Banks
Keyword(s):  
Population Density ◽  
Threatened Species ◽  
Faecal Pellet ◽  
Population Densities ◽  
Jarrah Forest ◽  
Linear Relationships ◽  
Pellet Counts ◽  
Transect Counts ◽  
Fox Control ◽  
Broad Scale

A study was conducted to determine the validity of using transect counts of faecal pellet groups to estimate population densities of a threatened, macropodid marsupial – the quokka (Setonix brachyurus (Quoy & Gaimard, 1830)). Mark–recapture estimates of population density were regressed against counts of faecal pellet groups at six sites with and three sites without fox control within the northern jarrah forest of Western Australia. Significant linear relationships were found between population density and pellet counts for all sites (r2 = 0.56, P < 0.02) and when all unbaited sites were excluded (r2 = 0.98, P < 0.01). We suggest that this method could be used for broad-scale monitoring of this threatened species.

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