Search Results for number

... studies to determine true species diversity in inland Australia is emphasised. © 2015 Royal Zoological Society of New South Wales 2015 Bird banding Riverina Bird banding Narrandera bird numbers over time 1964–1972 resident migratory and irregular visitors 2015 425AustralianZoologist volume...

... wildfires and one year of exceptionally high rainfall. The number of frogs detected per year ranged from 23 to 109, with the lowest number found in 2020, some eight months after a wildfire burnt all sites. Comparisons of the mean number of frogs detected among years revealed the population took 13 years...

... to inform sampling effort, and duration required to detect a commonly applied trend (30% decline over 10 years). Cost-effectiveness of sampling with remote sensors and traditional methods was also examined. Several thousand detections of priority species were recorded, with the number of detections varying...

...Harry F. Recher ABSTRACT Birds were removed after counting numbers along a creek reserve established when old growth eucalypt forest on the Southern Tablelands of New South Wales was cleared for pine plantations. Removal ceased after the number of individuals collected exceeded the number estimated...

... for many fauna species. The general abundance of termites in this cool temperate area was low, with at least 65% of large eucalypts having no internal hollows and thus never having supported termites. There was evidence of a recent decline of at least 55% in the number of trees being actively worked...

... resources in the burnt landscape is particularly important. In this study, we compared the numbers, survival and diets of three species of small mammal at two sites in tall open-forest in the Australian Capital Territory, Australia. The first site was subjected to a high severity experimental fire...

...Claire E Rowe; Shane T Ahyong ABSTRACT Jellyfish populations experience fluctuations referred to as ‘bloom and busts’, with numbers rapidly increasing followed by their sudden disappearance. When jellyfish numbers are blooming, they have a complicated relationship with their surrounding environment...

... (calling males) was detected at two of these offset ponds, but no tadpoles or juveniles were found. The number of frogs detected during systematic surveys varied from eight to forty-four per season, while the number found during diurnal surveys of 136-175 sites annually ranged from zero to thirty-three...

.... The study involved multiple post-fire surveys in 2020 and 2021 of 16 transects (eight burnt and eight unburnt) for which we had pre-2019 data on Greater Glider numbers. We were unable to find any gliders on two transects burnt at high to extreme severity (100% of eucalypt foliage killed in the canopy...

..., including new colonisers, increased, while a third showed little or no change. Despite the value of these data, frequency data are a coarse measure of changes in abundance. To provide baseline data on avian abundances for monitoring long-term trends in numbers, monthly counts along the transect were made...

..., the total number of kangaroos estimated to be present in the 14 commercial zones in 2017 was 17,457,257. The number present in each commercial zone varies widely across the state, with the Narrabri zone leading the list with an estimated 2,215,589 kangaroos in 2017. More than half of the kangaroos in NSW...

... Wales, were monitored incidentally for number, duration and the presence of song during flight. The duration of display flights undertaken by male C. cruralis showed a statistically significant increase after exposure to fenitrothion ( t 0.05, 398 = 1.97; p = 0.0085, analysed using log 10 transformed...

... have limited the number of nests detected. Other challenges that need to be considered include ground disturbance, contamination, and safety in snake habitats. Recommendations include obtaining soil plugs and lowering target odour thresholds for training, minimizing odour learning on live turtle odours...

... the Australian Museum (AM) collection database and mapped. Records were analysed according to the number of species, genera and families present and over 2,159 species recorded. We provide a brief description of the geological history and geomorphology of the Gamay and how the coastline has been modified since...

... the fire such as the extent of herbivory in regenerating vegetation and whether the ecosystem is subject to post-fire (salvage) logging. (3) Fire history (e.g. the number of past fires and the time since the previous fire). And, (4) Interactions between fire and other ecosystem drivers such as logging. We...