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51. Measurements of the strength of an adult skua and the force required to drag an adelie penguin chick from a colony [K017_1968_1969_NZ_1]
How much force was necessary to drag struggling adelie penguin (Pygoscelis adeliae) chicks of different ages from a colony was measured by holding a chick in a harness as they tugged against a spring ...


52. Observations of intraspecific aggressive behaviour in the adelie penguin (Pygoscelis adeliae) [K017_1967_1971_NZ_1]
The cause, function, effect and patterns of behaviour in penguin fighting on the colony was determined from long periods of direct observations of banded penguins and on set-period recordings of all ...


53. 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 ...


54. The relationship between skuas and adelie penguins at the Cape Bird colonies: penguin egg and chick mortality from skua predation and territorial, feeding and breeding behaviour of skuas about the penguin colony [K017_1965_1970_NZ_1]
A five year study on the relationship between skuas (Catharaeta maccormicki) and adelie penguins (Pygoscelis adeliae) was investigated at Cape Bird with two studies: a) A study of penguin egg ...


55. TROPHIC ECOLOGY OF ANTARCTIC SEABIRDS IN THE SCOTIA ARC ISLANDS AND ANTARCTIC PENINSULA [CDA_AR_PICTA-30-2004-2007-TROPHYC_ECOLOGY_ANTARCTIC_SEABIRDS]
ENGLISH The purpose of the project is to analyze several aspects of the trophic ecology of key species of seabirds of the Antarctic Ecosystem on the South Shetlands, South Orkneys Islands and Antarctic ...


56. ECOLOGY OF ANTARCTIC FISH FROM THE SCOTIA ARC (SOUTH GEORGIA ISLANDS, SOUTH ORKNEY ISLANDS, SOUTH SHETLAND ISLANDS AND WEST ANTARCTIC PENINSULA). IMPACT OF THE COMMERCIAL FISHERY ON NEARSHORE FISH OF THE AREA [CDA_AR_PICTA-09-2004-ECOLOGY_OF_ANTARCTIC_FISH_SCOTIA_ARC]   PARENT DIF
ENGLISH Project PICTA 09 2004-2007 The Project deals with different aspects of the ecology (trophic position, reproduction, age and growth, interaction with predators) of the Antarctic ichthyofauna ...


57. IAI-Data-CRN_012_Baruch_Invaders: Response of a native Neotropical savanna grass and two African invaders to high CO2, drought, herbivory and fire [IAIDIS754]   PARENT DIF
The invaders project analyzed the response of a native Neotropical savanna grass (Trachypogon plumosus) and two African invaders (Hyparrhenia rufa and Melinis minutiflora) to high CO2, drought, herbivory ...


58. TROPHIC ECOLOGY OF ANTARCTIC SEABIRDS IN THE SCOTIA ARC ISLANDS AND ANTARCTIC PENINSULA [CDA_AR_PICT-30-2004-TROPHYC_ECOLOGY_ANTARCTIC_SEABIRDS]
ENGLISH The purpose of the project is to analyze several aspects of the trophic ecology of key species of seabirds of the Antarctic Ecosystem on the South Shetlands, South Orkneys Islands and Antarctic ...


59. Determining Ciliate parameters for intra and inter-basin scale models [GLOBEC_102_UK_022]   PARENT DIF
Title: Determining Ciliate parameters for intra and inter-basin scale models: abundance, biomass, cell size structure, biodiversity and production We consider microzooplankton in two main roles: ...


60. Biology And The Predator-Prey Relationships Between Seabirds And Seals And Antarctic Fish: Identification Of Parameters To Detect Changes In The Ecosystem [CDA_AR_BIO_PREDATOR-PREY_REL]
Biology And The Predator-Prey Relationships Between Seabirds And Seals And Antarctic Fish; Identification Of Parameters To Detect Changes In The Ecosystem Instituto Antartico Argentino (IAA) Project ...


61. Turkey Lakes Tolerant Hardwoods Ecosystem Research Project, Ontario, Canada [Canada_CFS_TLTolHardwoodEcoRese]
The 1000 ha Turkey Lakes Watershed study area was established in 1979 to study the impacts of the long-range transport of air pollutants (LRTAP) on aquatic and terrestrial ecosystems. LRTAP impacts ...


62. Links Between Lice Species, Cowbird Fledglings, and Avian Host Species [usgsbrdpwrc0016]
Cowbirds lay their eggs in songbird nests, replacing some songbird eggs with their own; the unwitting songbirds end up raising cowbirds. Biologist Caldwell Hahn at the Patuxent Wildlife Research Center ...


63. Ecophysiological and floristic study of the lichen communities in Livingston Island. [CNDA-ESP_ANT89-0804-E_LIQ_01]   PARENT DIF
In English: Scientific objectives: -Floristic study of Livingston Island. -Structure, succession and dynamism of the principal lichen and bryolichen communities. -Chorological study (distribution) ...


64. Long-Term Ecological Research (LTER)/CDR002: Fenced Microplots, Disked (MICRO);Effects of NH4NO3 on Vegetation at Cedar Creek [LTER_CDR002]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR002 [Summary adapted from the LTER Core Data Set Catalog]: This experiment is exactly the same as CDR001 ...


65. Long-Term Ecological Research (LTER)/KBS006: Distribution and Composition of Seed Bank in Crop and Successional Communities [LTER_KBS006]
LTER - Long-Term Ecological Research Program/Kellogg Biological Station (KBS) LTER/KBS006 (Summary adapted from the LTER Core Data Set Catalog): The distribution and composition of the weed seed ...


66. Breeding Biology of Male Southern Elephant Seals (Mirounga leonine) at South Shetland Islands, Antarctica. Project No. 44 2002-2004 [CDA_AR_BIO_MIROUNGA_LEONINE_M.]   PARENT DIF
Project: Breeding Biology of Male Southern Elephant Seals (Mirounga leonine) at South Shetland Islands, Antarctica. Project No. 44 2002-2004 ENGLISH Project in cooperation with Universidad Nacional ...


67. Reproductive strategies of Antarctic penguins [CNDA-ESP_PIN_PAD]   CHILD DIFs
En English: This dataset contains information on the registrated data for the studies of the reproductive strategies of Antarctic penguins.This dataset is also the parent record for the following ...


68. Reproductive strategies of Antarctic penguins. 1990-91 [CNDA-ESP_ANT90-1079-E_PIN_01]   PARENT DIF
In English: This dataset contains information on: -Study of the reproductive strategy of Pygoscelis antarctica. -Study of genetic parentage between adults and chicks in their care. -Study of circadian ...


69. Reproductive strategies of Antarctic penguins. 1992-93 [CNDA-ESP_ANT91-1264_PIN_03]   PARENT DIF
In English: This dataset contains information on: -Monitoring of reproductive success in the Barbijo penguin. -Study of the factors which determine any variation. -Evolutionary implications of colony ...


70. Reproductive strategies of Antarctic penguins. 1993-94 [CNDA-ESP_ANT91-1264_PIN_04]   PARENT DIF
In English: This dataset contains information on: -To establish the factors determining the reproductive success in a Chinstrap penguin Pygoscelis antarctica colony. -To study the reproductive behaviour ...


71. Reproductive strategies of Antarctic penguins.1995-96. [CNDA-ESP_ANT94-0036_PIN_06]   PARENT DIF
In English: This dataset contains information on:First, we analyzed the effect of nest placement inside rookeries with respect to periphery on hatching date, and breeding success. Central nests showed ...


72. Reproductive strategies of Antarctic penguins.1996-97. [CNDA-ESP_ANT94-0036_PIN_07]   PARENT DIF
In English: This dataset contains information on:During the Antarctic summer 1996-1997 we studied severas aspects of the breeding biology of the Chinstrap penguin (Pygoscelis antarctica) in the large ...


73. The biology of lichen communities in Livingston Island (Antarctic). [CNDA-ESP_ANT90-1117-E_LIQ_02]   PARENT DIF
In English: Scientific objectives: -The evaluation of photosynthesis and respiration of significant macrolichen species in the Antarctic tundra; -Study of isoenzymes in bipolar lichens; -Microclimatic ...


74. Vegetation Change on Rangelands in Relation to Carbon Sequestration and Increasing Atmospheric CO2 Concentrations. [USDA.ARS.GSWRL.VegChngRangCO2]
(Adapted from project description) Problem: A large carbon sink is implied on western rangelands from data and modeling recently reported in Science. Only forest ecosystems have been generally ...


75. The Effect of Cattle on Habitat Selection by Bighorn Sheep [brdfresc0005]
The degree of competition between cattle and bighorn sheep (Ovis canadensis) is unknown. It is important that land managers understand interactions between the two species so that management decisions ...


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