Publications matching your search query
Results 326 to 350 of 968
Stressors associated with climate change, and contaminants resulting from the activities of humans, are affecting organisms and ecosystems worldwide. Until recently, the impacts of these stressors on marine ecosystems have largely been examined in isolation. However, with predicted climate change…
Stressors associated with global climate change and local human activities are affecting marine organisms worldwide. Stressors include changes in temperature, salinity and acidification, in addition to contaminants including metals and hydrocarbons.
As zooplankton is an important food source for consumers, and a major source of recruits to the benthic community, impacts on sensitive zooplankton communities have the potential to significantly alter nearshore marine ecosystems in Antarctica.
Understanding the sensitivity of Antarctic organisms to metal exposure is essential … for developing Antarctic specific Environmental Guidelines to manage contamination risks. For … the first time…
As zooplankton is an important food source for consumers, and a major source of … recruits to the benthic community, impacts on sensitive zooplankton communities have the … potential to significantly alter nearshore marine ecosystems in Antarctica.
Catch per unit effort (CPUE) is often the only data available from historical fisheries for inferring distribution and abundance of exploited populations. CPUE underestimates variations in relative abundance when gross effort data are only measured in total operating days.
Manipulative field studies are useful for investigating cause–effect relationships between contamination and benthic community health. However…
It has been shown by Taguchi (2010) that QBO periods were longer and … amplitudes larger during periods of La Niña than during periods of El Niño during … the period 1953-2008. Garfinkel and Hartmann (2007)…
The Southern Ocean is vitally important in understanding climate change, both regionally and globally, due to factors such as the presence of the Antarctic Circumpolar Current, seasonal sea-ice and strong Southern Hemisphere westerly winds. Also, the upper branch of the Circumpolar Deep Water (UCDW)…
Evaluating the demographic trends of marine top predators is critical to understanding the processes involved in the ongoing rapid changes in Antarctic ecosystems. However, the remoteness and logistical complexity of operating in … Antarctica, especially during winter…
Poa annua is a non-native grass found in Antarctica and the sub-Antarctic. It has a restricted distribution on Heard Island but is common and widespread on Macquarie Island, both World Heritage Areas.
The sub-Antarctic islands are some of the least inhabited and most protected ecosystems in the world. Due to their isolation and low human visitation they have escaped the worst effects of alien plant invasion.
The Antarctic Plateau offers many benefits to astronomers, including dark and … transparent infrared skies, long periods of uninterrupted observations, and very low levels … of atmospheric turbulence. Efforts to quantify these benefits are ongoing.
The parties to the Montreal Protocol are informed by three panels of experts. One of these is the … Environmental Effects Assessment Panel (EEAP), which deals with two focal issues. The first focus is … the effects of increased UV radiation on human health, animals, plants, biogeochemistry…
The ACCESS 1-0 and ACCESS 1.3 now have a set of 3 historical ensemble members which include the late 20th Century and early 21st Century (2020) simulations. Recently we have just completed a new set of experiments designed to investigate the impact of the perturbation in ozone since 1960.
This study aims to assess the ability of climate models to reproduce observed stratosphere-troposphere coupling. Coupling between the stratosphere and troposphere is examined via the Southern and Northern Annular Modes (SAM and NAM). These modes…
Large-scale zonal asymmetries in the climatological spatial pattern of atmospheric variables such as geopotential height, temperature, and trace gas concentration are primarily dictated by the characteristics of quasi-stationary Rossby waves (QSWs).
A decade of radiosonde observations of wind and temperature in the troposphere and lower stratosphere have made it possible to compile a climatology of low-frequency gravity waves above Davis, Antarctica (69S, 78E). Wave characteristics, extracted using wavelet analysis [Zink and Vincent, 2001]…
A decade of radiosonde observations of wind and temperature in the troposphere and lower … stratosphere have made it possible to compile a climatology of low-frequency gravity waves … above Davis, Antarctica (69°S, 78°E). Wave characteristics, extracted using wavelet … analysis [Zink and Vincent…
The sub-Antarctic islands are some of … the least inhabited and most protected … ecosystems in the world. Due to their … isolation and low human visitation they … have escaped the worst effects of alien … plant invasion.
The Southern Ocean islands are some of the most isolated landmasses in the world. Few of the islands support permanent human settlements or land based industries and as such they remain as some of the most uninvaded landscapes globally.
A major source of energy during lactation in mammals is provided … through the mobilization of blubber fatty acids (FAs).