2,383 research outputs found
Spatial patterns in species-rich sclerophyll shrublands of southwestern Australia
No full textQuestion: The drivers of spatial patterning among plant species and the implications of those patterns for the structure and function of plant communities are of ongoing interest and debate. Here we explore the spatial patterning shown by individual species in species-rich plant communities. We (1) compare the levels of aggregation in these communities to those observed in other species-rich communities, in particular tropical rain forests, and (2) consider how abiotic conditions might influence the levels of aggregation observed. Location: We describe the spatial structure of four species-rich Mediterranean-type shrubland communities near Eneabba, Western Australia. The four sites each contain > 10 000 plants and up to 113 species, and differ in substrate-type, species richness and composition. Methods: We analysed the spatial patterning of all species with more than 20 individuals (233 species patterns), and used point process models for aggregated patterns to separate first-order gradient effects from second-order clustering. Results: Aggregated distributions were most common at all sites, but especially at the site with the highest resource availability and heterogeneity and lowest species richness. APoisson cluster process best described the majority of aggregated species, suggesting that local interactions drive fine-scale patterns in these communities. Conclusions: As with many previous studies, we found that most species showed strong local aggregation. The proportion of species showing aggregation was less than has been described in species-rich tropical rainforests but was higher than observed in many temperate plant communities. The highest proportion of aggregated species was seen at the most resource-abundant site; this is in direct contrast to conceptual models that suggest that competition should be weakest, and aggregation most prevalent, in the most resource-limited sites
New Zealand grayling data
No full textData associated with Lee, F. & Perry, G.L.W. (2019). Assessing the role of
off-take and source-sink dynamics in the extinction of the amphidromous New
Zealand grayling (Prototroctes oxyrhynchus).</p
Lee_etal_2021_connectivity
No full textCode associated with manuscript Lee F., Simon K.S. & Perry, G.L.W. Network topology mediates freshwater fish metacommunity response to loss of connectivity
Rev. Perry C. Bramlett Collection
No full textFinding aid of the Rev. Perry C. Bramlett manuscript collectionA graduate of Southern Seminary in Louisville, Kentucky; a noted author; and a dedicated and respected scholar, Rev. Perry C. Bramlett�s life work was taking C. S. Lewis to the local church. His widow, Joan Fine Bramlett of Fairhope, Alabama, selected Mercer University to house this collection to honor Bramlett�s work, to share the significance of Bramlett�s life, and to mark his contributions to the scholarship of C. S. Lewis and his friends and their influences
Jere Nash Interview with Ed Perry
No full textInterview conducted by author Jere Nash with former state legislator Ed Perry in the process of writing Mississippi Politics: The Struggle for Power, 1976-2006. Topics covered include Perry\u27s background and his first campaign for the state House; Buddie Newman; 1987 rules change in House; Perry as chair of the Appropriations Committee; Perry\u27s race against Tim Ford for Speaker; Perry as chair of Judiciary A Committee; Perry as Clerk of the House; Kirk Fordice; education legislation; separation of powers bill in 1984; 1987 highway bill; gambling legislation; reapportionment; Perry chair of Constitution Committee; banks paying interest; bond bill; tort reform; and the increase of partisanship in the House
Retrieval of biomass combustion rates and totals from fire radiative power observations: FRP derivation and calibration relationships between biomass consumption and fire radiative energy release
No full textEstimates of wildfire aerosol and trace gas emissions are most commonly derived from assessments of biomass combusted. The radiative component of the energy liberated by burning fuel can be measured by remote sensing, and spaceborne fire radiative energy (FRE) measures can potentially provide detailed information on the amount and rate of biomass consumption over large areas. To implement the approach, spaceborne sensors must be able to derive fire radiative power (FRP) estimates from subpixel fires using observations in just one or two spectral channels, and calibration relationships between radiated energy and fuel consumption must be developed and validated. This paper presents results from a sensitivity analysis and from experimental fires conducted to investigate these issues. Within their methodological limits, the experimental work shows that FRP assessments made via independent hyperspectral and MIR radiance approaches in fact show good agreement, and fires are calculated to radiate 14 ± 3% [mean ± 1S.D.] of their theoretically available heat yield in a form capable of direct assessment by a nadir-viewing MIR imager. The relationship between FRE and fuel mass combusted is linear and highly significant (r2 = 0.98, n = 29, p < 0.0001), and FRP is well related to combustion rate (r2 = 0.90, n = 178, p < 0.0001), though radiation from the still-hot fuel bed can sometimes contribute significant FRP from areas where combustion has ceased. We conclude that FRE assessment offers a powerful tool for supplementing existing burned-area based fuel consumption measures, and thus shows significant promise for enhancing pyrogenic trace gas and aerosol emissions estimate
Letter from Lea Perry to Kazuo Ito, November 1943
No full textTranscript of a letter from Lea Perry to Kazuo Ito. The original letters are housed with the Sonoma County Japanese American Citizens League (JACL), and were borrowed for digitization courtesy of the JACL, December 2014. Digital reproduction of the original item is found in item: ssu_nbea_0030.The North Bay Ethnic Archive features material related to the forced relocation of northern San Francisco Bay Area residents to the Granada (Amache) incarceration camp, Colorado. It includes correspondence, photographs, and reports. Some of the original items are housed with the Sonoma County Japanese American Citizens League (JACL), and were borrowed for digitization courtesy of the JACL. The remainder are housed in Special Collections
Letter from Lea Perry to Kazuo Ito, May 22, 1942
No full textTranscript of a letter from Kazuo Ito to Lea Perry. The original letters are housed with the Sonoma County Japanese American Citizens League (JACL), and were borrowed for digitization courtesy of the JACL, December 2014. Digital reproduction of the original item is found in item: ssu_nbea_0005.The North Bay Ethnic Archive features material related to the forced relocation of northern San Francisco Bay Area residents to the Granada (Amache) incarceration camp, Colorado. It includes correspondence, photographs, and reports. Some of the original items are housed with the Sonoma County Japanese American Citizens League (JACL), and were borrowed for digitization courtesy of the JACL. The remainder are housed in Special Collections
Theodore Clement Steele: A Lecture by Rachel Perry
No full textJoin author and curator Rachel Perry for a lecture on the life and artwork of Theodore Clement (TC) Steele. Perhaps the most well-known artist of the “Hoosier Group,” Steele created impressionist portraits and landscape paintings from his studio in Nashville, Indiana.https://scholarship.depauw.edu/peeler_event/1084/thumbnail.jp
Letter from Lea Perry to George Ito, October 22, 1942
No full textTranscript of a letter from Lea Perry to George Ito. The original letters are housed with the Sonoma County Japanese American Citizens League (JACL), and were borrowed for digitization courtesy of the JACL, December 2014. Digital reproduction of the original item is found in item: ssu_nbea_0018.The North Bay Ethnic Archive features material related to the forced relocation of northern San Francisco Bay Area residents to the Granada (Amache) incarceration camp, Colorado. It includes correspondence, photographs, and reports. Some of the original items are housed with the Sonoma County Japanese American Citizens League (JACL), and were borrowed for digitization courtesy of the JACL. The remainder are housed in Special Collections
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