Translocation of the socially complex Black-eared Miner Manorina melanotis: a trial using hard and soft release techniques

We translocated five colonies of the highly social and co-operatively breeding Black-eared Miner Manorina melanotis, an endangered Australian honeyeater. Two colonies were released immediately (hard release) and two colonies were housed in aviaries for up to a week on-site and then supplied with food for a further week following release (soft release), A fifth colony was released using a combination of methods. All four hard and soft released colonies contained dependent fledglings at the time of release, This appears to be the first translocation of a co-operative species where intact colonies containing multiple breeding females, each with a suite of helpers have been translocated successfully. Both hard and soft release treatments appeared equally successful during an initial monitoring period of up to two months. All four colonies maintained social cohesion, and displayed high levels of survival and site fidelity. Both hard release and one soft release colony attempted to breed within 600 m of their release site within eight weeks of release, The other soft release colony bred 12 months later. We believe the inclusion of dependent young in each translocated colony provided a focus for translocated colonies that promoted site faithfulness and colony cohesion. Results of long-term monitoring remain inconclusive and it is recommended that monitoring be repeated during several future breeding events. Given our findings, we recommend that when translocating highly social species every effort is made to translocate the entire group, hard release techniques be applied and stimuli that enhance group cohesion and site faithfulness (the presence of dependent young) be exploited.

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Geodetic monitoring of earth-filled flood embankment subjected to variable loads

Reports on Geodesy and Geoinformatics ◽

10.2478/rgg-2018-0009 ◽

2018 ◽

Vol 106 (1) ◽

pp. 9-18 ◽

Cited By ~ 1

Author(s):

Przemysław Kuras ◽

Łukasz Ortyl ◽

Tomasz Owerko ◽

Aleksandra Borecka

Keyword(s):

Water Reservoir ◽

Reference Points ◽

The Other ◽

Small Displacement ◽

Flood Wave ◽

Other Hand ◽

Long Term Monitoring ◽

External Loads ◽

Term Monitoring

Abstract The article presents an example of supplementing geotechnical monitoring with geodetic observations. The experimental flood embankment built within the ISMOP project (Information Technology System of Levee Monitoring) was subjected to continuous monitoring based on built-in measuring sensors. The results of geodetic monitoring used for observation of earth-filled flood embankment subjected to external loads are presented in the paper. The tests were carried out on an experimental food embankment forming a closed artificial water reservoir. The observations were carried out for two purposes. The first was long-term monitoring, which was aimed to determine the behaviour of the newly built embankment. The second purpose was to check the reaction of the levee to the simulated flood wave, caused by filling and draining the reservoir. In order to monitor the displacements of the earth-filled embankment, it was necessary to develop the proper methodology. For the needs of research works, an appropriate network of 5 reference points and 48 survey markers has been designed and established. The periodic measurements were carried out using precise robotic total station. The stability of the reference frame was each time checked and displacements of survey markers were determined based on it. The final results allow to reveal the reaction of levee to external loads. The displacement values were referred to the course of the filling and draining experiment to indicate the relationship between them. In the field of long-term monitoring the results clearly imply the dominance of displacements outside the reservoir for points located on the embankment, in contrast to points on the crest and foreground, which do not show significant movements. On the other hand, in the field of testing the embankment reaction to the flood wave, obtaining reliable results was possible thanks to high-accuracy geodetic measurements. Small displacement values, often at the level of their determination errors, were averaged for groups of points with the same height of foundation. A sizable number of points allows to perceive some tendencies and the relation between embankment soaking, hence its movement directions can be noticed. During periods when the levee was still saturated with water, slight movements outside the reservoir were revealed. On the other hand, the following period of drying caused movement in the opposite direction.

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Fidelity to calving areas in moose (Alces alces) in the absence of natural predators

Canadian Journal of Zoology ◽

10.1139/z07-077 ◽

2007 ◽

Vol 85 (8) ◽

pp. 902-908 ◽

Cited By ~ 10

Author(s):

J.-P. Tremblay ◽

E.J. Solberg ◽

B.-E. Sæther ◽

M. Heim

Keyword(s):

Home Range ◽

Site Fidelity ◽

Alces Alces ◽

Anthropogenic Disturbances ◽

Recruitment Success ◽

Ecological Scale ◽

Risk Of Predation ◽

Long Term Monitoring ◽

Term Monitoring

We used long-term monitoring (1991–2005) data from a moose ( Alces alces (L., 1758)) population (i) to determine if moose cows are faithful to their calving sites and (ii) to examine the effect of previous recruitment success on calving-site fidelity. We generated null hypotheses from the distances between calving sites used by other individuals inside the home range of each cow. The calving sites used in successive years by individual cows were closer together (2.1 ± 0.2 km) than were calving sites used by other cows within their home range (3.9 ± 0.1 km; n = 30 cows, 148 sites). The former is similar to distances reported from areas where natural predators are present but females successfully weaned their calf or calves. We did not detect any effects of previous recruitment success, but the distances to the next calving sites of the only two cows that did not wean their calves (3.8 and 3.4 km) are analogous to values reported for cows that have lost their calf or calves to predators. Our data support the theory that fidelity to areas where parturition has been successful could be an evolutionary trade-off between reproductive success and risk of predation to maximize fitness. On an ecological scale, moose cows apparently perceived anthropogenic disturbances as a potential risk, influencing their choice of calving sites and ultimately their fidelity.

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Analysis of Changes in Vegetation Index Through Long-term Monitoring of Petroglyphs of Cheonjeon-ri, Ulju

Journal of Conservation Science ◽

10.12654/jcs.2021.37.6.05 ◽

2021 ◽

Vol 37 (6) ◽

pp. 659-669

Author(s):

Yu Bin Ahn ◽

Ji Hyun Yoo ◽

Yu Gun Chun ◽

Myeong Seong Lee

Keyword(s):

Spectral Reflectance ◽

Vegetation Index ◽

Normalized Difference Vegetation Index ◽

The Other ◽

Hyperspectral Images ◽

Other Hand ◽

Depth Study ◽

Long Term Monitoring ◽

Term Monitoring

In this study, vegetation index, the vegetation index calculated based on hyperspectral images was used to monitor Petroglyphs of Cheonjeon-ri, Ulju from 2014 to 2020. To select suitable the vegetation index for monitoring, indoor analysis was performed, and considering the sensitivity to biocontamination, Normalized Difference Vegetation Index (NDVI) and Triangular Vegetation Index (TVI) were selected. As a result of monitoring using the selected vegetation index, NDVI increased from 2014 to 2018 and then decreased in 2020, after preservation treatment. On the other hand, TVI was difficult to confirm the tendency during the monitoring. This difference was due to the variation in spectral reflectance according to the photographing conditions by year. Therefore NDVI is less sensitive to spectral reflectance deviation than TVI, so it can be used for monitoring. In order for TVI to be used, however, in-depth study is needed.

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