324,260 research outputs found
Impact of broom, Cytisus scoparius (Fabaceae), in naturally treeless sub-alpine frost-hollow vegetation communities at the Barrington Tops, south-eastern Australia
No full textThe exotic shrub Cytisus scoparius (L.) Link (family Fabaceae), known as broom, is having a major impact on native vegetation in naturally treeless sub-alpine frost-hollow areas (c. 32o 01’ 37” S, 151o 26’ 12” E’, 1440 m elevation) at the Barrington Tops, New South Wales, in south-eastern Australia. This vegetation is of limited extent and has significant biogeographical and ecological importance. Nine paired 10 m line transects were compared, with one of the pair in areas of almost 100% Cytisus scoparius and the other in adjacent areas without Cytisus scoparius. Results were compared with species recorded from this area in the 1930s. There are obvious differences in native vegetation in areas with and without Cytisus scoparius. On average there were 5.1 (range 2–10) species per 10 m in areas of almost 100% Cytisus scoparius cover and 17.0 (12–25) species per 10 m in areas adjacent to infested areas but without Cytisus scoparius. Other than Cytisus scoparius, the area surveyed had little in the way of exotic species and these were only present at low densities. Native species present in 2008 are similar to those recorded in the 1930s; there were no records of Cytisus scoparius in the area in the 1930s. The study suggests that control of Cytisus scoparius in naturally treeless areas at the Barrington Tops should be a priority to prevent a decline in the distribution and abundance of many plant species, many of which only occur in treeless areas of the Barrington Tops
Economic Issues in the Management of Plants Invading Natural Environments: Scotch Broom in Barrington Tops National Park
Full text linkScotch broom (Cytisus scoparius, L.), is an exotic leguminous shrub, native to Europe, which invades pastoral and woodland ecosystems and adjoining river systems in cool, high rainfall regions of southeastern Australia. Broom has invaded 10,000 hectares of eucalypt woodland at Barrington Tops National Park in New South Wales, and is having a major impact on the natural ecology of the sub-alpine environment. It is extremely competitive with the native flora, retarding their growth and in many areas blanketing the ground and preventing growth of many understorey species in open forest areas. An active program to manage this invasion is being implemented by the National Parks and Wildlife Service. The management issues include whether eradication or containment is economically desirable, and when biological control is economically desirable. Management choices depend on the marginal costs of increments of government intervention, effects of uncertain budgets on the control of broom, choice of control measures and effects of uncertain values of biodiversity. These issues are addressed through the application of a detailed bioeconomic model of broom management.Scotch broom, economic issues, management issues, natural environments, bioeconomic model, Environmental Economics and Policy,
Natural Theology; Or, Evidences Of The Existence And Attributes Of The Deity : Collected From The Appearances Of Nature / By William Paley, D.D. Late Archedeacon Of Carlisle
No full textEnthält Widmung an: Shute Barrington, L.L.D. Lord Bishop of Durham.Vorlageform der Veröffentlichungsangabe: London: Printed For J. Faulder, New Bond-Street. 1810. - Vorliegende Form (Kolophon): Printed bey S. Hamilton, Weybridge
Barrington, M R, NX25034
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/370398Surname: BARRINGTON
Given Name(s) or Initials: M R
Military Service Number or Last Known Location: NX25034
Missing, Wounded and Prisoner of War Enquiry Card Index Number: 6021180658
Item: [2016.0049.02725] "Barrington, M R, NX25034
SIL SGS-2.4 S-band ground station
No full textThe Space Innovations Limited SGS-2.4 ground station is a flexible low-cost system designed specifically for small satellite missions in a low Earth orbit using S- and X-band communications links. The ground station is compatible with ESA and NASA communications standards. These features, as well as its high tracking speeds, make the system widely compatible and capable of supporting many mission types. The paper describes the overall system configuration and covers the mechanical design of the antenna and its drive syste
Barrington, Colin X C (Colin Clarence), Singapore
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/370399Surname: BARRINGTON
Given Name(s) or Initials: COLIN X C (COLIN CLARENCE)
Military Service Number or Last Known Location: SINGAPORE
Missing, Wounded and Prisoner of War Enquiry Card Index Number: 20104180659
Item: [2016.0049.02726] "Barrington, Colin X C (Colin Clarence), Singapore
Rutland Barrington, Rollenbild, Hüftbild, in: Arthur Sullivan
No full textWilliam S. Gilbert: The Gondoliers [[Elektronische Ressource]]Signatur des Originals: S 36/F08132Original eigenhändig signier
Collins, L B H (Leonard Barrington Henry), VX66227
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/378206Surname: COLLINS
Given Name(s) or Initials: L B H (LEONARD BARRINGTON HENRY)
Military Service Number or Last Known Location: VX66227
Missing, Wounded and Prisoner of War Enquiry Card Index Number: 32103192019
Item: [2016.0049.10500] "Collins, L B H (Leonard Barrington Henry), VX66227
Homogeneous substrate heating using a CO<sub>2</sub> laser with feedback, rastering, and temperature monitoring
No full textWe report results from a highly versatile and scalable raster-scanned continuous wave CO2 laser heater incorporating a dual wavelength photodiode-based temperature monitoring system with feedback control. The system is able to uniformly heat substrates inside a vacuum chamber, reduce the occurrence of substrate fracture and allow almost negligible heat loss to the deposition chamber and surroundings. The minimum achievable temperature difference across the substrate is, in practice, limited by the fastest achievable raster scan speed
- …
