Habitat Use by Eastern Bristlebirds in Barren Grounds Nature Reserve

1992 ◽  
Vol 92 (2) ◽  
pp. 117-121 ◽  
Author(s):  
Mick Bramwell ◽  
Graham Pyke ◽  
Connie Adams ◽  
Peg Coontz
Keyword(s):  
Habitat Use ◽  
Nature Reserve ◽  
Barren Grounds

scholarly journals ASSESSMENT OF POPULATION CHARACTERISTICS AND HABITAT USE OF Podocnemis vogli (MÜLLER 1935) DURING A REPRODUCTIVE SEASON AT THE BOJONAWI PRIVATE NATURE RESERVE (VICHADA DEPARTMENT, COLOMBIA)

2020 ◽  
Vol 3 (2) ◽  
pp. 83
Author(s):  
Ana María Sepúlveda-Seguro ◽  
Vivian Patricia Páez ◽  
Marley Tatiana Gómez-Rincón ◽  
Mónica A. Morales-Betancourt ◽  
Carlos A. Lasso
Keyword(s):  
Habitat Use ◽  
Nature Reserve ◽  
Tail Length ◽  
Reproductive Season ◽  
Population Characteristics ◽  
Reproductive Phenology ◽  
Sampling Effort ◽  
Specific Class ◽  
Sexual Characteristics ◽  
Habitat Generalist

We conducted a short study in the Bojonawi Private Nature Reserve (Vichada department, Colombia) in three types of aquatic macrohabitats to characterize habitat use, population structure and reproductive phenology of Podocnemis vogli during one reproductive season. We also reevaluated the degree of sexual dimorphism in this species. To maximize capture rates, we used three methods: funnel traps, trammel nets, and manual capture. Only the funnel traps could be used in a standardized manner in all three macrohabitats. We captured 149 individuals in all age/size classes and obtained 11 recaptures. Since we were able to standardize sampling effort with the funnel traps in all macrohabitats, we compared habitat use and class structure among habitats during this reproductive season. There were no significant differences among the three macrohabitats in terms of relative abundances or size class distributions, but sex ratios differed, with an excess of males in the river and females in the lagoon. As with other congeners, P. vogli is a sexually dimorphic species where females attain larger sizes. In this study we documented that pre-cloacal tail length and nail length on the anterior third toe are the most useful secondary sexual characteristics for sexing subadult and adult individuals. Some females larger than 22 cm straight-line carapace length had calcified eggs in their oviducts. This species is abundant within the reserve and appears to be a habitat generalist, including the use of large rivers. More extensive and intensive monitoring is needed to document specific class survivorship rates, detectabilities and population dynamics.

The decline, response to fire, status and management of the Eastern Bristlebird

1997 ◽  
Vol 3 (3) ◽  
pp. 235 ◽  
Author(s):  
Jack Baker
Keyword(s):  
Nature Reserve ◽  
New South ◽  
Population Monitoring ◽  
Average Density ◽  
Disjunct Distribution ◽  
Habitat Manipulation ◽  
Southeastern Australia ◽  
South Wales ◽  
Western Victoria ◽  
Barren Grounds

The Eastern Bristlebird Dasyornis brachypterus is a threatened passerine, endemic to southeastern Australia. It is a cryptic, ground dwelling, semi-flightless inhabitant of dense, fire-prone vegetation and is usually only detected by its calls. The disjunct distribution suggests that they were once more numerous and their population continuous from southern Queensland to western Victoria. Their decline has been documented in historic and recent times. Habitat loss, nest desertion and fire have been implicated in the decline and extinction of local populations. Strongholds for the species are Barren Grounds Nature Reserve and Bherwerre Peninsula, 100 and 150 km south of Sydney respectively. At Barren Grounds, in the absence of recent fire, there were significant increases in the population between 1992 and 1996. There was a trend of increasing Eastern Bristlebird density with increasing fire-age of habitat and average density plateauing at two birds per 5 ha, 10 years after fire. At Nadgee, a coastal Nature Reserve on the New South Wales/Victorian border, the population appears to be recovering very slowly from severe wildfires in 1972 and 1980. At the beginning of 1996 there were less than 2 000 individual Eastern Bristlebirds occupying an area of approximately 100 km2. For the management of Eastern Bristlebirds, habitat manipulation using prescribed fire should not be undertaken unless site-specific population monitoring data demonstrate that it would be beneficial. Concentrations of Eastern Bristlebirds and potential fire refuges should be protected from unplanned fire. For prescription burns, potential escape routes need to be planned for Eastern Bristlebirds. The threatened status should be changed from Vulnerable to Endangered.

High-Levels of Outcrossing in Populations of Banksia spinulosa R.Br. and Banksia paludosa Smith

1988 ◽  
Vol 36 (2) ◽  
pp. 217 ◽  
Author(s):  
SM Carthew ◽  
DJ Ayre ◽  
RJ Whelan
Keyword(s):  
Nature Reserve ◽  
Single Locus ◽  
Barren Grounds

Rates of outcrossing were measured for two species of Banksia at Barren Grounds Nature Reserve, near Robertson, N.S.W. For B. spinulosa in a woodland area, both single-locus and multi-locus estimates of outcrossing approached the levels predicted for panmixia. A single-locus estimate for B. paludosa cohabiting the same site and a nearby heathland site gave similarly high estimates of outcrossing.

scholarly journals HABITAT USE STRATEGY OF VERTEBRATES IN AN EMERGING NATURE RESERVE

2019 ◽  
Vol 17 (2) ◽  
pp. 50-80
Author(s):  
A. L.A. SHOTUYO ◽  
O. A. JAYEOLA ◽  
I. A. AYODELE
Keyword(s):  
Habitat Use ◽  
Animal Species ◽  
Nature Reserve ◽  
Stock Assessment ◽  
Strong Association ◽  
Principal Component ◽  
Single Species ◽  
Line Transect ◽  
The Family ◽  
And Control

The habitat use strategy of vertebrates in Alabata Strict Nature Reserve was studied. Twenty (20) sample plots of 25m x 25m (0.062ha) were laid at random over the total area of the study site for data collection. King Census and Line Transect methods were modified for this study using direct and indirect modes of wildlife stock assessment for an accurate collection of data due to the dense nature of the vegetation in some areas. One hundred and twenty-one vertebrate species, belonging to fifty-six families were recorded. Twenty-seven families were represented by just a single species each, while thirteen families had two species each. The family Colubridae was represented by ten species, while Rattudae and  Sciuridae had a single species respectively. Birds were the most encountered (more than 60%) followed by mammals (more than 20%) while the Order Reptalia constitutes the remaining (less than 20%). Food and cover requirements abound in the study area, which explains the availability of a variety of fauna species. There is a strong association between the environmental variables and animal species thus; distribution, performance and survival of the species are directly influenced by these variables. The Principal component analysis and Ordination shows that the ecosystem of the study site is not stable yet. This can be observed from the clustering of the animal species together in an attempt to make the best use of the environment. The maintenance of a healthy ecosystem is largely dependent on its management and control of activities of man and animals.  

scholarly journals Habitat use by giant pandas Ailuropoda melanoleuca in the Wanglang Nature Reserve, Sichuan, China

2013 ◽  
Vol 52 (1) ◽  
pp. 23 ◽  
Author(s):  
Dong-Wei Kang ◽  
Hong-Wei Yang ◽  
Jun-Qing Li ◽  
You-Ping Chen ◽  
Lian-Jun Zhao
Keyword(s):  
Habitat Use ◽  
Nature Reserve ◽  
Ailuropoda Melanoleuca ◽  
Giant Pandas ◽  
Wanglang Nature Reserve

scholarly journals Winter habitat use of snow leopards in Tomur National Nature Reserve of Xinjiang, Northwest China

2012 ◽  
Vol 4 (2) ◽  
pp. 191-195 ◽  
Author(s):  
Feng XU ◽  
Ming MA ◽  
WeiKang YANG ◽  
David BLANK ◽  
YiQun WU ◽  
...  
Keyword(s):  
Habitat Use ◽  
Nature Reserve ◽  
Northwest China ◽  
Winter Habitat ◽  
National Nature Reserve ◽  
Snow Leopards
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