Portal Home
Thumbnail Icon [Parameters: Topic='BIOSPHERE', Term='ECOLOGICAL DYNAMICS']



Refine by Category
 
Refine by Full Text

 

278 Titles Match Your Query
Previous Showing 51 through 100 of 278 Next
51. Biodiversity, Dynamics and Metabolics of Heterogeneous Meltwater Ponds [K025_2011_2012_NZ_3]
Microbial biodiversity and community dynamics within and between selected melt water ponds near Bratina Is will help to identify environmental drivers within ponds. Research will examine the metabolic ...


52. Biological survey of the Balleny Islands [K407_2000_2001_NZ_1]
US coastguard helicopters were used to survey bird, seal and plant populations of the three main islands and islets of the Balleny Islands, located off the coast of Antarctica, for birds and seal ...


53. Biological, physical and chemical parameters in water and microbial mat samples from ponds in Victoria Valley [K081_2003_2005_NZ_2]
Water and microbial mat communities of the ponds in the Victoria Valley was investigated to test the hypothesis that the gradient in climatic severity associated with latitudinal and altitudinal gradients ...


54. Biological, physical and chemical parameters in water and microbial mat samples from ponds in the Cape Hallett vicinity and cryoconite holes on the Tucker and Bornmann glaciers [K081_2005_2006_NZ_3]
A series of 10 ponds, located away from the main influences of the penguin colony at Cape Hallett, were investigated for variation in chemistry and microbial mat development. Cores of benthic microbial ...


55. Biological, physical and chemical parameters in water and microbial mat samples from ponds in the Labyrinth area of Wright Valley [K081_2003_2005_NZ_1]
Water and microbial mat communities of the ponds in the Labyrinth area of Wright Valley was investigated to test the hypothesis that the gradient in climatic severity associated with latitudinal and ...


56. Biology of the springtail Gomphiocephalus hodgsoni at Cape Bird: feeding habits, life cycle and migration movements throughout a season [K017_1969_1970_NZ_1]
Aspects of the biology of Gomphiocephalus hodgsoni (Collembola) was investigated at Cape Bird. The work can be divided into three main investigations: 1) Food studies - which included isolation and ...


57. Biomass, productivity and diurnal migration of marine plankton in shallow waters at Cape Bird [K014_1973_1974_NZ_1]
The phytoplankton and zooplankton in shallow water at Cape Bird was investigated. Samples were taken at intervals of 4 days from early December to late January in plastic buckets from the fast ice ...


58. Blood and faecal samples from Adelie and emperor penguins at Cape Washington and Mandible Cirque, Ross Sea Region, Antarctica [K034_2001_2005_NZ_14]
Blood and faecal samples were collected from 96 emperor penguins at Cape Washington and from 29 Adelie penguins at Mandible Cirque. Plasma concentrations of corticosterone will be measured ...


59. Body temperature and activity patterns of adelie penguins held in captivity under different light conditions to determine if there is an internal body clock [K123_1987_1988_NZ_1]
Adelie penguins were held in captivity and fitted with implantable body temperature transducers. Measurements were made every 30 minutes of body temperature and activity (orientation, posture, eye ...


60. Botanical investigations at Terra Nova Bay and Wood Bay, North Victoria Land and the assessment of human impacts [K271_1988_1989_NZ_1]
Vegetation and environmental studies were conducted at sites on Ross Island and in North Victoria Land, including Terra Nova Bay (Edmonson Point, Northern Foothills, Cape Washington, Mount Melbourne, ...


61. Bratina Island ponds planktonic community dynamics [K160_2009_2010_NZ_1]
This study aimed to increase the knowledge of microbial biodiversity and the environmental factors which structure them paying special attention to the stratification transition zones within Bratina ...


62. Causes of high mortality of the second chick from a pair of skua (Catharaeta maccormicki) eggs; egg content and chick weights, feeding rates, parental brooding behaviour, experimental removal and starvation of chicks [K017_1966_1967_NZ_1]
The cause/factors of heavy mortality of the second chick hatching from a pair of eggs at a skua nest was investigated. Previous observations found that the second chick is chased away from the nest ...


63. Census data using aerial photographs on the number of breeding Adelie penguins (Pygoscelis adeliae) at colonies in the Ross Sea Region [K122_1981_2008_NZ_1]
Data are of numbers of breeding pairs of Adelie penguins(Pygoscelis adeliae)in the Ross Sea region colonies counted from aerial photographs. Photographs were taken from either a helicopter or from ...


64. Census of adelie penguins (Pygoscelis adeliae) at the Cape Royds rookery, 22 January, 1985 [K121_1984_1985_NZ_1]
A penguin census (adults and chicks) was conducted in January on the Cape Royds rookery. The number of chicks and adults were counted three times (by two observers for the chicks and one observer ...


65. Change in corticosterone levels and corticosterone response in arriving and departing Adelie penguins at Cape Bird, Ross Island [K034_2001_2005_NZ_1]
Adelie penguins were captured at Cape Bird, Ross Island in the 2001-2002 season to measure the effects of fasting on corticosterone responses in penguins departing from the rookery compared with those ...


66. Characterisation and sampling of the macrobenthic community structure of coastal sublittoral soft bottom habitats in Antarctica [K163_1989_1990_NZ_1]
Coastal soft-bottom communities contain diverse assemblages of animals. Biological interactions and physical disturbances are thought to be important in determining community structure on the small ...


67. Characterisation of aquatic resources in McMurdo Sound region of Antarctica: water chemistry, biological identity and genomic samples [K081_2009_2010_NZ_1]
Aquatic environments in Antarctica have changes over time with a changing climate. Small aquatic zones on the surface of glaciers ablation zones are comparatively constant and represent perhaps the ...


68. Chlorophyll a fluorescence and temperature measurements from lichen and mosses buried under snow at Botany Bay, Granite Harbour [K024_1999_2000_NZ_2]
Fluorescence (chlorophyll a fluorescence) activity measurements were recorded for selected plants for about three weeks to determine if the photosystems of lichen or mosses are active in differing ...


69. Collection of Antarctic terrestrial insects from Cape Royds, New Harbour/Taylor Valley [K012_1981_1982_NZ_4]
Collection of terrestrial insects (collembolans) were made wherever possible to extend distribution records, and to characterize preferred habitats for the insects. Collections of collembola (springtails) ...


70. Collection of benthic Antarctic fishes to determine isopod ectoparasite species distribution and host specificity and collection of specimens for a museum reference collection [K012_1981_1982_NZ_2]
142 specimens of small benthic fishes were captured at Cape Royds and examined for ectoparasites. Where practical, fishes with isopod ectoparasites were retained to obtain additional information on ...


71. Collection of ectoparasites from Adelie penguins, an Emperor penguin, a Skua and a Snow Petrel at Cape Bird [K014_1977_1978_NZ_3]
48 Adelie penguins, one Emperor penguin, one Skua and one Snow Petrel were examined for ectoparasites to add to the study of avian ectoparasites of the New Zealand sub region. Two methods were used: ...


72. Collection of marine sediment, algae, invertebrate and fish samples from multiple sites at diveable depths in the Ross Sea Region [K065_2008_2009_NZ_1]
In order to resolve the contribution of microbes (bacteria) in the benthic food web under the sea ice in Antarctica and to determine the level of recycling of carbon that occurs in the community, ...


73. Collembolids (Gomphiocephalus hodgsoni) and mite (Stereotydius mollis) samples and surveys of the lower Taylor Valley for phylogenetic relationship studies [K024_2002_2003_NZ_1]
Both collembolids (Gomphiocephalus hodgsoni) and mites (Stereotydius mollis) were surveyed over the entire floor of the lower Taylor Valley with special attention paid to the stream areas and to wet ...


74. Community composition survey at Terra Nova Bay with similar samples collected at Cape Evans and Cape Armitage [K043_2008_2009_NZ_5]
Five ice cores were collected from Terra Nova bay in the vicinity of Gondwana station. From each core the top, middle and bottom sections were sectioned and processed as described earlier. In addition, ...


75. Comparative studies of vegetation surveys, maps, species lists and lichen growth rates of the Cape Hallett region (Seebee Hook, Willett Cove and the scree slopes surrounding them) with a 1968 study [K024_1998_1999_NZ_1]
The first botanical work at Cape Hallett was carried out when Hallett Station existed in the early to late 1960s. These studies were used for comparative purposes of vegetation cover and lichen growth ...


76. Comparison of the photosynthetic performance of Umbilicaria species in the Ross Sea region [K024_2002_2003_NZ_3]
The photosynthetic performance of Umbilicaria species was measured under standard conditions in the laboratory and compared with Umbilicaria species from the Taylor Valley and Mt Kyffin.


77. Constant observations of an adelie penguin (Pygoscelis adeliae) colony to determine the precise time of nest relief, the duration of foraging trips and the rhythms of behaviour and the levels of hormones in their blood [K121_1984_1986_NZ_1]
The precise time of nest relief, the duration of foraging trips and the rhythms of behaviour were measured by keeping a colony of Adelie penguins under constant observation throughout the breeding ...


78. Contraction rates of muscles and measurements of the input and output parameters of the vestibulo-ocular reflex action in the Antarctic fish Pagothenia borchgrevinki [K012_1984_1985_NZ_2]
In order to fully describe the input and output parameters of the vestibulo-ocular reflex, simultaneous recordings are required of head movement, sensory input from the semicircular canals, motor ...


79. Corticosterone and behavioural responses of emperor penguins to people and confinement, Cape Washington 2004-2005 [K034_2001_2005_NZ_12]
Corticosterone and behavioural responses of emperor penguins were measured in birds that were followed for up to 30 minutes. Blood samples were taken and corticosterone concentrations measured. Penguins ...


80. Corticosterone and behavioural responses to people of arriving and departing penguins temporarily confined, Ross Island [K034_2001_2005_NZ_5]
The corticosterone and behavioural responses of incubating penguins was measured on incubating adelie penguins in the 2001-2002 season. In the 2002-2003 seasons that study was extended to include ...


81. Corticosterone response of incubating Adelie penguins to the presence of people at Mandible Cirque, North Victoria Land - a rookery previously not visited by people 2004-2005 [K034_2001_2005_NZ_13]
Approximately 20,000 pairs of Adelie penguins nest at Mandible Cirque on the northern Victoria Land Coast. This rookery had not previously been visited by people, providing the chance to compare responses ...


82. Corticosterone response of incubating Adelie penguins to the presence of people, Cape Bird [K034_2001_2005_NZ_2]
The corticosterone and behavioural responses of Adelie penguins to the presence of people was investigated to determine the minimum distance for a person to approach a penguin without initiating a ...


83. Corticosterone responses and body condition of penguins arriving at Cape Bird, Cape Royds and Cape Crozier, Ross Island. 2002-2003 [K034_2001_2005_NZ_3]
With unusual ice conditions around Ross Island as a consequence of the iceberg B15 being stationary north of Ross Island, penguins returning to rookeries had much further to walk than usuall. The ...


84. Corticosterone responses of Emperor Penguins in the Ross Sea Region [K034_2001_2005_NZ_9]
In the 2003-2004 season, 7 emperor penguins were sampled in the McMurdo Sound area. Birds were caught by hand and a single blood sample collected from a vein in the flipper. Each bird was then restrained ...


85. Data from GPS loggers and Time Depth Recorders with VHF transmitters attached to female Weddell seals (Leptonychotes weddellii) at Hutton Cliffs throughout the winter months [K063_2002_2004_NZ_2]
Links between the foraging performance of Weddell seals breeding in McMurdo Sound and a range of oceanographic parameters, including sea surface temperature, productivity and bathymetry encountered ...


86. Determination of the development rate of the choroid rete, the visual behaviour, the effect of stress on visual behaviour and the metabolice response of two Antarctic fish to exercise stress [K012_2000_2001_NZ_1]
In Antarctic fish, retinal function is critically dependent on oxygen supply and in some fishes additional oxygen can be unloaded through a choroid rete at the back of the retina. The relative development ...


87. Determination of the unique evolutionary patterns that prevail in the Antarctic springtail (Gomphiocephalus hodgsoni) [K025_2006_2007_NZ]
The energetic budgets (activity) of Antarctic springtails (Gomphiocephalus hodgsoni) was investigated at Cape Bird, Ross Island and the Garwood Valley, McMurdo Dry Valleys to determine the unique ...


88. Determining if lactating Weddell seal mothers are indeed fasting [K071_1996_1997_NZ_2]
Weddell seals are well adapted polar animals. They give birth to pups in the Antarctic summer when they haul out onto the ice. While feeding their pups, they have a massive fasting weight loss (and ...


89. Determining the microbial flora around mummified seal carcases in the McMurdo Dry Valleys as a nutrient source for microbial diversity [K023_2001_2002_NZ_3]
Transect sampling of surface and 5-10cm depth of the soils in the vicinity of seal carcases in the Miers Valley was carried out. Samples were analysed to assess the impact of local carbon/nitrogen ...


90. Determining the rates of nutrient uptake to create an approximate nutrient budget of microbial mats from Bratina Island ponds, McMurdo Ice Shelf [K081_2000_2001_NZ_5]
Mat cores from ponds on the McMurdo Ice Shelf were incubated in pond water which had been spiked by 50 µg l-1 of nitrate or phosphate. Three ponds were used for water samples (Skua, Duet and P70) ...


91. Diesease in Adelie and Emperor Penguins [K034_2001_2005_NZ_11]
Cloacal swabs were taken from Adelie penguins at Cape Crozier and Cape Bird (2003-2004 season) and at Mandible Cirque (2004-2005 season) and from emperor penguins in McMurdo Sound (2003-2004 season) ...


92. Distribution and feeding habits of Gomphiocephalus hodgsoni at Cape Geology/Botany Bay, Antarctica [K053_1993_1994_NZ_2]
Data was obtained on distribution and feeding habits of the Collembolan Gomphiocephalus hodgsoni at Cape Geology/Granite Harbour. A considerable amount of descriptive data has been collected regarding ...


93. Distribution data and samples of non-marine algae for culture and DNA analysis to determine evolution and dispersal of algae along a latitudinal gradient [K124_2003_2004_NZ_1]
Algae populations at different points on a latitudinal gradient within the Ross Sea sector were investigated. At Cape Hallett, the distribution of the different algal communities were mapped by a ...


94. Distribution of meroplankton in Granite Harbour in proximity to a glacier [K018_2009_2010_NZ_2]   PARENT DIF
Plankton was sampled at a 4 x 3 grid (100m apart) centred around S 77o00.910’; E 162o 58.978’ between 21 Nov 2009 - 26 Nov 2009 to determine if there is a different larval community at different ...


95. Diversity of marine benthic communities at Granite Harbour, the effect of ocean acidification on the Antarctic gooeyduc Laternula elliptica and the effect of pulsed primary food source on the benthic community [K082_2008_2009_NZ_1]
To continue to improve our understanding of Ross Sea marine benthic ecosystem structure and function, investigations were conducted to determine how key benthic organisms (i) respond to ocean acidification, ...


96. Do lactating seals maintain blood glucose levels whilst fasting during lactation? [K071_1993_1994_NZ_2]
Weddell seals are well adapted polar animals. They give birth to pups in the Antarctic summer when they haul out onto the ice. While feeding their pups, they have a massive fasting weight loss (and ...


97. Does melatonin secretion occurs when Weddell seals are exposed to darkness? [K071_1993_1994_NZ_1]
In many animals, seasonal events such as reproduction and changes in pelage are regulated by the alteration in length of daylight throughout the year. In many animals, the hormone melatonin is secreted ...


98. Early geological, glaciology and biological investigations of the McMurdo Dry Valleys, the Koettlitz Glacier area and Darwin Glacier area by Victoria University of Wellington Antarctic Expeditions [K042_1957_1963_NZ_1]
The Victoria University of Wellington Antarctic Expedition (VUWAE) was mounted to complete the detailed investigations of the extensive ice free area of Victoria Land between the Taylor and Mackay ...


99. Early life stages in the life cycle of Antarctic silverfish, Pleuragramma antarcticum [K012_1998_1999_NZ_1]
Mature eggs were expressed from a gravid icefish at Terra Nova Bay and fertilized successfully in vitro. Development was followed for about 15 days, but was curtailed by the end of the season. Development ...


100. Ecological investigation of nitrogen sources and sinks in Lake Wilson and three catchment ponds in the Darwin Glacier region [K081_1992_1993_NZ_1]
Ecological investigations into the waters of the Darwin Glacier region (extreme southern end member to the Dry Valley system) were carried out to extend knowledge of microbial processes to high latitude ...


Previous Showing 51 through 100 of 278 Next

Link to NASA website
Responsible NASA Official:   Dr. Stephen Wharton
Webmaster:   Monica Lyles   ·  Contact GCMD User Support for assistance