Monitoring Crocodylus porosus populations in the Northern Territory of Australia: a retrospective power analysis

2001 ◽  
Vol 28 (6) ◽  
pp. 547 ◽  
Author(s):  
S. C. Stirrat ◽  
D. Lawson ◽  
W. J. Freeland ◽  
R. Morton

In the Northern Territory of Australia, populations of the estuarine crocodile (Crocodylus porosus) have been subject to an annual egg harvest since the early 1980s. Since 1997, adult and juvenile crocodiles have also been harvested in some catchments. Annual surveys of crocodile populations are conducted in order to ensure that the harvest is sustainable. Boat surveys commenced in 1975 and helicopter surveys commenced in 1989. Retrospective power analysis was used to determine whether the sampling program meets the objectives of the Crocodile Management Program for the Northern Territory. Data collected during boat surveys vary in quality between river systems. The analysis of pooled data from 7 river systems with a residual standard deviation of 0.11 indicates that the power of the current spotlight survey method to detect a decline of 10% per annum in around 4 years is about 0.9. In this time the population would decline by around 33% and would fully recover in 8 years following the removal of the factor causing the decline. This allows detection of a decline within one-third, and recovery within two-thirds, of the estimated generation time of the saltwater crocodile and will allow management actions to be implemented before the impacts on populations are serious. The data from helicopter and boat surveys from a 10-year period were compared. Helicopter surveys did not provide useful management information.

2006 ◽  
Vol 132 (2) ◽  
pp. 92-97 ◽  
Author(s):  
Donald Frevert ◽  
Terrance Fulp ◽  
Edith Zagona ◽  
George Leavesley ◽  
Harry Lins

1993 ◽  
Vol 20 (1) ◽  
pp. 127 ◽  
Author(s):  
B Walsh ◽  
PJ Whitehead

Since 1986 the Conservation Commission of the Northern Territory has operated a programme to remove 'problem' saltwater crocodiles from waters in and adjoining the township of Nhulunbuy. Over a period of five years, 52 different saltwater crocodiles (44 male) were captured. Most (48) were released at remote sites designated by the traditional Aboriginal owners of the surrounding lands. Release distances from the township varied from 17 to 282 km (by coastline). Many crocodiles (47.9%), including those released at the most distant sites, returned to, and were subsequently recaptured at, the township. Total capture rates (initial captures and recaptures pooled) varied seasonally, with fewer crocodiles being caught in the cooler dry season. During the wet season capture rates remained high, but relatively fewer 'new' crocodiles were caught. Probability of recapture could not be related to distance and direction of release from the township, nor size and sex of the released crocodile. Frequency of capture of individual crocodiles (1-8 times) was also unrelated to these variables. The high rates of return indicate that relocation is unlikely to be an effective strategy for managing humancrocodile interactions, at least in areas where potential release sites already support saltwater crocodile populations near carrying capacity.


2018 ◽  
Vol 2 (2) ◽  
pp. 059-075
Author(s):  
Nailul Awalia ◽  
Ni Nyoman Yuliati ◽  
Agus Khazin Fauzi

This study aims to examine the understanding of SMEs actors on accounting information and to know empirically the application of information for small and medium enterprises (MSMEs) in Sekarbela Subdistrict. This research used descriptive approach by interview and survey method. Data collection was done by distributing questionnaires to respondents. The sample of this research is food business MSMEs in Sekarbela Sub district with total of 68 UMKM. However, from 68 MSME samples only 50 samples can be processed. The data is processed by using the frequency distribution then made the average analysis and proportion. The results showed that MSMEs in Sekarbela Subdistrict have applied accounting information although in a simple form. Accounting information most widely applied is the purchase record with the number of 27 respondents or 54% and cash records 28 respondents or 56%. Then MSMEs in Sekarbela Subdistrict have used accounting information, the most widely used is the type of goods sold based on profit or profit of each type of goods with the number of 28 respondents or 56%. Furthermore, MSME also need operational information record about the number of goods sold per day with the number of 31 respondents or 62% and types of goods sold per day with the number of 31 respondents or 62%, records management information that is the production cost report with the number of 32 respondents or 64% financial information is the amount of profit each day with the number 46 respondents or 92%


2014 ◽  
Vol 9 (2) ◽  
pp. 101
Author(s):  
Alusyanti Primawati ◽  
Dewi Mustari

The software is an intermediary between system hardware computer with user as human. Based on the emerging software projects because of the importance of the functions already affects many functions in various aspects. Software projects that have become this need ultimately require management actions to manage the process in the project. Project management is necessary for the success of the project. Bereau Information System PT. X is one part of a company that provides software for functional PT. X. Analysis results from the concept of software project management information systems Bureau at PT. X when the process of designing application systems information accounting PT. X aims to answer how concept of project management Information Systems Bureau in designing the Accounting Information System applications. The methods used in this research is the study of the library with a general empirical approach based on experience and theories related to project management especially in software projects. The conclusions obtained that the activity of the management software on System Information Bureau is in compliance with the application of existing theory, but science is constantly evolving so as to do the development management activities after conducting evaluation regularly for the maintenance of long-term software project.


2021 ◽  
Vol 5 (1) ◽  
pp. 28-39
Author(s):  
Galih Raspati ◽  
Andi Riyanto

ABSTRACTThe phenomenon of government financial reports that have not received an unqualified opinion because they have not presented financial information that is following applicable standards and is not transparent and accountable for the management of regional finances, makes the level of trust of users of financial statements doubt the various information presented. The demand for clean governance is also a strong foundation so that the bureaucratic apparatus is able to present quality financial statements. This study aims to understand the effectiveness of the application of the Government Internal Control System (SPIP) and the Regional Management Information System (SIMDA) currently being applied and its impact on the quality of financial statements. The research method used was a survey method. Then the data is collected from the results of questionnaires, interviews and literature studies. Data analysis is descriptive and verification. The results showed that SPIP and SIMDA had a significant impact on the quality of financial statements in Cireunghas District, Sukabumi District.    Keywords: financial statements, quality, SIMDA, SPIP


2017 ◽  
Vol 8 (1) ◽  
pp. 333-342 ◽  
Author(s):  
Forest P. Hayes ◽  
Michael J. Dodrill ◽  
Brandon S. Gerig ◽  
Colton Finch ◽  
William E. Pine III

Abstract Determining the population status of endangered Humpback Chub Gila cypha is a major component of the adaptive management program designed to inform operation of Glen Canyon Dam upstream from Grand Canyon, Arizona. In recent decades, resource managers have identified a portfolio of management actions (with intermittent implementation) to promote population recovery of Humpback Chub, including nonnative fish removal, changes in water release volumes and discharge ramping schedules, and reductions in hydropower peaking operations. The Humpback Chub population in Grand Canyon has increased over this same period, causal factors for which are unclear. We took advantage of unusual hydrology in the Colorado River basin in 2011 to assess trends in juvenile Humpback Chub length–weight relationships and condition in the Colorado River below Glen Canyon Dam as well as in the unregulated Little Colorado River. Within each river, we observed higher length–weight b-parameter estimates (exponent of the standard power equation) at higher water temperatures. We also found higher slope estimates for the length–weight relationship at higher temperatures in the Little Colorado River. Slope estimates were more variable in the Colorado River, where mean water temperatures were more uniform. The next step is to examine whether Humpback Chub length–weight relationships influence population metrics such as abundance or survival. If these relationships exist, then monitoring condition in juvenile Humpback Chub would provide a quick and low-cost technique for assessing population response to planned management experiments or changing environmental conditions.


Viruses ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1006 ◽  
Author(s):  
Amy J. Davis ◽  
Kathleen M. Nelson ◽  
Jordona D. Kirby ◽  
Ryan Wallace ◽  
Xiaoyue Ma ◽  
...  

Intensive efforts are being made to eliminate the raccoon variant of rabies virus (RABV) from the eastern United States and Canada. The United States Department of Agriculture (USDA) Wildlife Services National Rabies Management Program has implemented enhanced rabies surveillance (ERS) to improve case detection across the extent of the raccoon oral rabies vaccination (ORV) management area. We evaluated ERS and public health surveillance data from 2006 to 2017 in three northeastern USA states using a dynamic occupancy modeling approach. Our objectives were to examine potential risk corridors for RABV incursion from the U.S. into Canada, evaluate the effectiveness of ORV management strategies, and identify surveillance gaps. ORV management has resulted in a decrease in RABV cases over time within vaccination zones (from occupancy ( ψ ¯ ) of 0.60 standard error (SE) = 0.03 in the spring of 2006 to ψ ¯ of 0.33 SE = 0.10 in the spring 2017). RABV cases also reduced in the enzootic area (from ψ ¯ of 0.60 SE = 0.03 in the spring of 2006 to ψ ¯ of 0.45 SE = 0.05 in the spring 2017). Although RABV occurrence was related to habitat type, greater impacts were associated with ORV and trap–vaccinate–release (TVR) campaigns, in addition to seasonal and yearly trends. Reductions in RABV occupancy were more pronounced in areas treated with Ontario Rabies Vaccine Bait (ONRAB) compared to RABORAL V-RG®. Our approach tracked changes in RABV occurrence across space and time, identified risk corridors for potential incursions into Canada, and highlighted surveillance gaps, while evaluating the impacts of management actions. Using this approach, we are able to provide guidance for future RABV management.


2011 ◽  
Vol 35 (3) ◽  
pp. 858-863 ◽  
Author(s):  
Mike Letnic ◽  
Patrick Carmody ◽  
John Burke

2008 ◽  
Vol 35 (2) ◽  
pp. 170 ◽  
Author(s):  
Yusuke Fukuda ◽  
Peter Whitehead ◽  
Guy Boggs

Saltwater crocodile (Crocodylus porosus) populations have recovered strongly across northern Australia over the 30 years since the species was protected from hunting. However, monitoring studies show large geographical variations in abundance across the Northern Territory, Queensland and Western Australia. The Northern Territory has considerably higher densities, raising questions about constraints on recovery in the other states. We examined broad-scale environmental influences on population abundance by modelling the species.environment relationships across northern Australia. The hypothesis-based models showed strong support for the linkage to (1) the ratio of total area of favourable wetland vegetation types (Melaleuca, grass and sedge to total catchment area, (2) a measure of rainfall seasonality, namely the ratio of total precipitation in the coldest quarter to total precipitation in the warmest quarter of a year, and (3) the mean temperature in the coldest quarter of a year. On the other hand, we were unable to show any clear negative association with landscape modification, as indicated by the extent of high-impact land uses or human population density in catchments. We conclude that geographical variations in crocodile density are mostly attributable to differences in habitat quality rather than the management regimes adopted in the respective jurisdictions.


Sign in / Sign up

Export Citation Format

Share Document