Search Results for situation

..., in an increasing number of situations, the viability of a threatened native species is now being compromised by another native species, and conservation managers must consider options for how best to make decisions about and manage such situations. Here, I provide Australian examples of the many variations...

.... Occupied waterbodies had a greater proportion of submerged vegetation, a higher pH, and were situated close to other occupied waterbodies, generally < 200 m. The adult male and female population size was estimated at 45 ± 10 (± S.E.) and 23 ± 8 individuals, respectively. There was high site fidelity...

... hectare. The subsidy program was initially funded for AUD$5 million and restricted to full-canopy exclusion netting for orchards situated in the Sydney Basin and Central Coast but later expanded to the remainder of NSW and also expanded to subsidise throw-over netting and upgrades of non-complaint netting...

... lakes are closely situated and thought to be potentially connected at high water levels, they show distinct ecological characters and the effect of water-level fluctuations on zooplankton species richness seems to differ between the lakes. * Author for correspondence: Yoshi.Kobayashi...

...Benjamin L. Allen; Lee R. Allen; Michael Graham; Matt Buckman Understanding the ecological roles of apex predators remains an important field of study. The influence of apex predators on ecosystems can be either profound or negligible in different situations, and uncertainty still exists about...

...Stephanie Hing; Jordan O. Hampton; Troy. J. Gibson ABSTRACT Animal welfare is an important concern wherever people are called upon to kill wildlife. Notwithstanding the ethical dilemmas surrounding the killing of wildlife in various situations, if an animal is to be killed we have a duty to select...

... based on total grazing pressure that takes account of densities of other herbivores. It would reverse the situation where landholders are expected to carry an unstated number of animals that has no relationship to the carrying capacity of their properties, seasonal conditions or competing land uses...

... sources of CO 2 that could be taken into field situations were tested: soft drink carbonating machines; the chemical production of CO 2 by mixing sodium bicarbonate and acetic acid; and, small disposable CO 2 cartridges. Of these, a system designed to use CO 2 cartridges was found to be the most reliable...

... of anthropogenic factors, including hunting for the fur trade, resulted in widespread population declines for the koala. In Victoria, the situation was extreme. Currently, many koala populations in Victoria are derived from only a few individuals which existed less than 120 years ago. These populations therefore...

... engineer the landscape, the air, the water and even the climate. In many situations, humans are also the top predator, killing both our competitive mesopredators and their herbivorous prey. Leaving the top predator out of models reduces the alternative hypotheses and imposes directional bias...

... in the survey area and represented a southern range extension. The survey was unable to assess the impacts of logging on threatened species because of low numbers detected. Approaches to improve this situation in future surveys are discussed. Corresponding author: [email protected] © 2016...

... in their guardian role rather than a feral pest to be shot). To add to the irony of this situation, some of the donkeys employed in this way are feral donkeys, which blurs the lines even further. What are the deciding factors in the status we assign to animals? I contend that utilitarian economic considerations...

... relying on a combination of scent-tracking and speed to attack the scrubfowl. Both attacks were unsuccessful, although human intervention in the latter may have affected the outcome. The widely differing methods show that dogs are capable of adapting their hunting behaviour to suit particular situations...