A far-infrared molecular and atomic line survey of the Orion KL region     

M. R. Lerate  M. J. Barlow  B. M. Swinyard  J. R. Goicoechea  J. Cernicharo  T. W. Grundy  T. L. Lim  E. T. Polehampton  J.-P. Baluteau  S. Viti  J. Yates 《Monthly notices of the Royal Astronomical Society》2006,370(2):597-628

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Die vegetation von afrika unter berücksichtigung von umwelt,entwicklung, wirtschaft,agrar- und forstgeographie: KNAPP,R. (1973): (The Vegetation of Africa). 626 pp., 823 figs., 825 tables. Stuttgart: Gustav Fischer. DM 238     

E.M. Yates 《Geoforum》1974,5(4):103-104

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Physical parameters for Orion KL from modelling its ISO high-resolution far-IR CO line spectrum     

M. R. Lerate  J. Yates  S. Viti  M. J. Barlow  B. M. Swinyard  G. J. White  J. Cernicharo  J. R. Goicoechea 《Monthly notices of the Royal Astronomical Society》2008,387(4):1660-1668

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Facilitating adaptation of biodiversity to climate change: a conceptual framework applied to the world’s largest Mediterranean-climate woodland     

Suzanne M. Prober  Kevin R. Thiele  Philip W. Rundel  Colin J. Yates  Sandra L. Berry  Margaret Byrne  Les Christidis  Carl R. Gosper  Pauline F. Grierson  Kristina Lemson  Tom Lyons  Craig Macfarlane  Michael H. O’Connor  John K. Scott  Rachel J. Standish  William D. Stock  Eddie J. B. van Etten  Grant W. Wardell-Johnson  Alexander Watson 《Climatic change》2012,110(1-2):227-248

The importance of ecological management for reducing the vulnerability of biodiversity to climate change is increasingly recognized, yet frameworks to facilitate a structured approach to climate adaptation management are lacking. We developed a conceptual framework that can guide identification of climate change impacts and adaptive management options in a given region or biome. The framework focuses on potential points of early climate change impact, and organizes these along two main axes. First, it recognizes that climate change can act at a range of ecological scales. Secondly, it emphasizes that outcomes are dependent on two potentially interacting and countervailing forces: (1) changes to environmental parameters and ecological processes brought about by climate change, and (2) responses of component systems as determined by attributes of resistance and resilience. Through this structure, the framework draws together a broad range of ecological concepts, with a novel emphasis on attributes of resistance and resilience that can temper the response of species, ecosystems and landscapes to climate change. We applied the framework to the world’s largest remaining Mediterranean-climate woodland, the ‘Great Western Woodlands’ of south-western Australia. In this relatively intact region, maintaining inherent resistance and resilience by preventing anthropogenic degradation is of highest priority and lowest risk. Limited, higher risk options such as fire management, protection of refugia and translocation of adaptive genes may be justifiable under more extreme change, hence our capacity to predict the extent of change strongly impinges on such management decisions. These conclusions may contrast with similar analyses in degraded landscapes, where natural integrity is already compromised, and existing investment in restoration may facilitate experimentation with higher risk?options.  相似文献   

An ISO survey of possible water and hydroxyl IRASER transitions towards the star-forming regions W49, W3(OH) and Sgr B2M     

M. D. Gray  J. A. Yates 《Monthly notices of the Royal Astronomical Society》1999,310(4):1153-1157

We report ISO LWS observations towards the star-forming regions W49N, W3(OH) and Sgr B2M in LWS04 mode (high-resolution Fabry–Perot scans). Possible far-infrared laser emission was detected in a water line at 133.55 μm towards W49N, but the spectral resolution was inadequate to establish firmly the nature of the emission. An additional water line was marginally detected in absorption at the 3 σ level, also towards W49N, at 169.74 μm. No OH lines were detected towards Sgr B2M or W3(OH) at either 134.83 or 135.95 μm, either in emission or in absorption.  相似文献   

Submillimetre photometry of post-asymptotic giant branch stars     

T. M. Gledhill  I. Bains  J. A. Yates 《Monthly notices of the Royal Astronomical Society》2002,332(3):L55-L58

Stars in the post-asymptotic giant branch (post-AGB) phase of evolution are surrounded by detached circumstellar envelopes containing dust which emits thermally in the mid- and far-infrared. Here we present 850-μm SCUBA photometry of nine candidate post-AGB stars. All targets are detected at 850 μm and we use these fluxes to estimate the envelope dust masses and, by comparison with the 100-μm IRAS fluxes, the dust emissivity index.  相似文献   

An Assessment of Integrated Climate Change Impacts on the Agricultural Economy of Egypt     

David N. Yates  Kenneth M. Strzepek 《Climatic change》1998,38(3):261-287

This study used a quadratic programming sector model to assess the integrated impacts of climate change on the agricultural economy of Egypt. Results from a dynamic global food trade model were used to update the Egyptian sector model and included socio-economic trends and world market prices of agricultural goods. In addition, the impacts of climate change from three bio-physical sectors – water resources, crop yields, and land resources – were used as inputs to the economic model. The climate change scenarios generally had minor impacts on aggregated economic welfare (sum of Consumer and Producer Surplus or CPS), with the largest reduction of approximately 6 percent. In some climate change scenarios, CPS slightly improved or remained unchanged. These scenarios generally benefited consumers more than producers, as world market conditions reduced the revenue generating capacity of Egyptian agricultural exporters but decreased the costs of imports. Despite increased water availability and only moderate yield declines, several climate change scenarios showed producers being negatively affected by climate change. The analysis supported the hypothesis that smaller food importing countries are at a greater risk to climate change, and impacts could have as much to do with changes in world markets as with changes in local and regional biophysical systems and shifts in the national agricultural economy.  相似文献   

Seasonal persistence of a small southern California beach fill     

M.L. Yates  R.T. Guza  W.C. O'Reilly  R.J. Seymour 《Coastal Engineering》2009,56(5-6):559-564

Torrey Pines State Beach, a site with large seasonal fluctuations in sand level, received a small shoreface beach fill (about 160,000 m³) in April 2001. The 600 m-long, flat-topped nourishment pad extended from a highway riprap revetment seaward about 60 m, terminating in a 2 m-tall vertical scarp. A 2.7 km alongshore span, centered on the nourishment region, was monitored prior to the nourishment and biweekly to monthly for the following 2 years. For the first 7 months after the nourishment, through fall 2001, significant wave heights were small, and the elevated beach fill remained in place, with little change near and above Mean Sea Level (MSL). In contrast, the shoreline accreted on nearby control beaches following a seasonal pattern common in southern California, reducing the elevation difference between the nourished and adjacent beaches. During the first winter storm (3 m significant wave height), the shoreline retreated rapidly over the entire 2.7 km survey reach, forming an alongshore-oriented sandbar in 3 to 4 m water depth [Seymour, R.J., Guza, R.T., O'Reilly, W., Elgar, S., 2004. Rapid erosion of a Southern California beach fill. Coastal Engineering 52 (2), 151–158.]. We show that the winter sandbar, most pronounced offshore of the nourishment, moved back onto the beach face during summer 2002 (following the usual seasonal pattern) and formed a wider beach above MSL at the site of the original nourishment than on the control beaches. Thus, the April 2001 shoreline nourishment was detectable until late fall 2002, persisting locally over a full seasonal cycle. In an extended 7-year time series, total sand volumes (summed between the back beach and 8 m water depth, over the entire 2.7 km reach) exhibit multi-year fluctuations of unknown origin that are twice as large as the nourishment volume.  相似文献   

The disappearance of the 1667-MHz OH maser in IRAS 17436+5003 (HD 161796)     

I. Bains  J. A. Yates  T. M. Gledhill  A. M. S. Richards 《Monthly notices of the Royal Astronomical Society》2003,346(3):L46-L50

We report the diminution of the 1667-MHz OH maser in the post-asymptotic giant branch star IRAS 17436+5003, by a factor of ≳17 over a period of ≲12 yr, from observations with MERLIN. This circumstellar maser was detected by Likkel in 1987, at the 13σ level of her observations with the Green Bank Telescope. We discuss a number of possible reasons for this phenomenon and conclude that it is most likely due to turbulence arising from interacting stellar winds.  相似文献   

A detailed modelling of the chemically rich clumps along the CB3 outflow     

Milena Benedettini  Jeremy A. Yates  Serena Viti  Claudio Codella 《Monthly notices of the Royal Astronomical Society》2006,370(1):229-238

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