Search Results for survey effort

... habitat features important to each taxon to target survey effort. Eight of the 13 priority taxa were located during surveys, within the burn scar or adjacent intact vegetation, revealing range extensions for five species. Species varied in susceptibility to fire and there is significant concern regarding...

..., was apparent as under optimal conditions (no rain) koalas were recorded, on average, for > 50 % of survey nights rather than for just a few nights. We suggest that only a modest survey effort (4–5 nights) in the breeding season, on nights with < 3 mm of rain, is required to achieve 90–95 % probability...

...M. Schulz; M.C. de Oliveira A survey of the microchiropteran fauna of Kroombi Tops, central Queensland identified a total of twenty species. This Survey recorded nine additional species to previous surveys due to a greater survey effort, sampling in remote areas away from access roads and employing...

... listed as threatened under NSW legislation. One hundred and ninety vertebrate species (79% of the total) were recorded during a systematic survey, with the remainder of records from opportunistic survey (18%) or secondary sources (3%). The effectiveness of the systematic survey effort in detecting...

... disjunctions in the species’ distribution and highlight the need for additional survey effort. Email: [email protected] © 2020 Royal Zoological Society of New South Wales 2020 Barrier Range Broken Hill Complex lizard reptile skink spinifex Introduction The Triodia Earless Skink...

... and Atlas 2 , 1998 - 2001). Reporting rates, adjusted for survey effort, were compared for 347 bird species. Of these, 184 species (53%) showed no change between the two atlases, 83 (24%) were recorded more frequently during Atlas 2 , and 80 (23%) were recorded less frequently during Atlas 2...

... intensity (number of surveys/sensors per site). This will usually influence the budget required for such a program. There are, however, trade-offs between sampling effort, intensity and duration and these can be explored using power analyses (Guillera-Arroita and Lahoz-Monfort 2012), but an understanding...

... at sites throughout East, South, Southeast and Austral-Asian countries. However, uptake of the program has been uneven across countries, and gaps in survey effort, coverage and geospatial description of sites has meant that the generation of population trends for the full suite of waterbird species remains...

... observed. n = no reproductive activity observed Monitoring Heath Frogs in the Shoalhaven 170 December 2007AustralianZoologist volume 34 (2) Discussion Variation in population counts The survey recorded 339 L. littlejohni at 12 sites over five years with a survey effort of 6.5hrs per annum. At five sites...

... to be rigorously monitored. This would require transferring effort from pre–harvest surveys towards monitoring occupancy trends and status of biodiversity over time. 2017 359 Introduction Forest management zoning is a commonly used process by Australian forestry agencies to designate permissible activities within...

... in a considerable waste of survey time and effort. This study aimed to test whether visual cues associated with trapping increased the disturbance rate of traps by birds, which are renowned for their attraction to visual stimuli. We manipulated trap covering (plastic bag, hessian and uncovered traps) in conjunction...

... survey; this disparity was also evident in a pronounced size difference in the reptile species composition of the two techniques. The comparison demonstrates that the standard survey protocol has substantial biases against some species and groups of species and that additional sampling effort or specific...

... in the two studies were identical and the survey effort was comparable (allowing for the greater size of Yarrigan NP). The format of the present paper follows Murphy and Murphy (2015) to facilitate comparison of the two studies. The results of the present study are also compared to broad-scale regional...

...). A second snake Furthermore, there are fewer than 20 records in the last with similar body colouration was observed disappearing decade in the ALA database, which may be a reflection into a hole. The maximum recorded air temperature of limited survey effort in the species preferred habitat during the day...

... show the regional spread of survey effort and this can be used to target under-sampled areas. This reduces the bias towards species-rich sites and provides a more complete picture of bird populations over a larger area than achieved for site-specific studies. Contributors to these databases often have...