Peter Minchin - Academia.edu (original) (raw)
Papers by Peter Minchin
Northeastern Naturalist, 2018
Theory and models in vegetation science, 1987
Simulated vegetation data were used to assess the relative robustness of ordination techniques to... more Simulated vegetation data were used to assess the relative robustness of ordination techniques to variations in the model of community variation in relation to environment. The methods compared were local nonmetric multidimensional scaling (LNMDS), detrended correspondence analysis (DCA), Gaussian ordination (GO), principal components analysis (PCA) and principal coordinates analysis (PCoA). Both LNMDS and PCoA were applied to a matrix of Bray-Curtis coefficients. The results clearly demonstrated the ineffectiveness of the linear techniques (PCA, PCoA), due to curvilinear distortion. Gaussian ordination proved very sensitive to noise and was not robust to marked departures from a symmetric, unimodal response model. The currently popular method of DCA displayed a lack of robustness to variations in the response model and the sampling pattern. Furthermore, DCA ordinations of two-dimensional models often exhibited marked distortions, even when response surfaces were unimodal and symmetric. LNMDS is recommended as a robust technique for indirect gradient analysis, which deserves more widespread use by community ecologists.
Palaeogeography, Palaeoclimatology, Palaeoecology, 1996
Restoration Ecology, 2008
Dispersal limitation can retard natural establishment of desirable species on restoration sites, ... more Dispersal limitation can retard natural establishment of desirable species on restoration sites, especially where landscapes are fragmented, but dispersal limitation is assumed to become less critical with time as early colonists become reproductively mature. Distribution patterns of recruiting trees in a 20‐year‐old passively restored bottomland in northeast Louisiana suggested persistent dispersal limitation in some bottomland hardwood species and influence of dense shrub patches on colonization. To test these hypotheses, we measured seed rain as a function of distance to seed source and association with shrub cover. Seed rain of the wind‐dispersed Fraxinus pennsylvanica was highest near the forest edge, except where mature recruits occurred. Although shrub presence did not influence dispersal of F. pennsylvanica, its negative influence on probability of occurrence in the sapling layer suggests that shrub cover may limit its regeneration. The bird‐dispersed Crataegus viridis and I...
Canadian Journal of Forest Research, 1999
Advances in Atmospheric Sciences, 1990
Sea-surface temperature (SST) in the eastern, equatorial Pacific and rain days over China in summ... more Sea-surface temperature (SST) in the eastern, equatorial Pacific and rain days over China in summer are analysed using correlation moments that is proposed by author and principal component analysis(PCA). Occurrences of the strong rain-day anomalies over China are associated with extreme SSTs in some years. Areas significantly affected by the phenomena include North and Northeast China.
IAVS Bulletin
Heinrich E. Weber 1995 putting brambles collected during a field trip in the herbarium press
Civil Engineering Studies, Illinois Center for Transportation Series, 2014
Seed variety performance data for establishing temporary vegetative cover was collected at four I... more Seed variety performance data for establishing temporary vegetative cover was collected at four Illinois locations at four planting seasons. Current Illinois Department of Transportation (IDOT) standard specifications call for a mixture of perennial rye and spring oats for temporary vegetative cover, with no variation for time of year or site conditions. That mixture has demonstrated some success; however, for every location and time of year, this study identified at least one seed variety that demonstrated performance superior to the specified mix. Temporary seeding specifications currently employed by nearby states were reviewed and compared with Illinois’ specifications. In addition to seed variety, the effectiveness of seed bed preparation using a power rake and the effectiveness of straw-mat and loose wheat-straw mulching methods were investigated. Based on the observed results, the research team has proposed modifying temporary seeding recommendations to reflect seeding date a...
IAVS Bulletin, 2019
Taiwan's cloud forest dominated by Fagus hayatae (Lalashan, 2017, above) and Chamaecyparis obtusa... more Taiwan's cloud forest dominated by Fagus hayatae (Lalashan, 2017, above) and Chamaecyparis obtusa var. formosana, covered by epiphytes (Smangus, 2009, below).
IAVS Bulletin, 2019
Social events included a welcome reception and mixer on the evening of Sunday, 22 July (held at S... more Social events included a welcome reception and mixer on the evening of Sunday, 22 July (held at Story Mansion, a historic home in Bozeman), a music jam and social on the evening of Tuesday, 24 July (held at Eagles Club in downtown Bozeman), and the symposium dinner on the evening of Thursday, 26 July (held at Deer Park Chalet, Bridger Bowl). During the closing ceremony, on the afternoon of Friday, 27 July, Dave Roberts presented a special award to Robert Pfister, Research Professor Emeritus in Forest Ecology, University of Montana, in recognition of his major contributions to the vegetation ecology of the region. The co-organizers express their gratitude to the many people who helped to make the symposium a success. These include the other members of the organizing committee (Steve Cooper and Kent Houston), the Scientific Committee (
IAVS Bulletin, 2019
Social events included a welcome reception and mixer on the evening of Sunday, 22 July (held at S... more Social events included a welcome reception and mixer on the evening of Sunday, 22 July (held at Story Mansion, a historic home in Bozeman), a music jam and social on the evening of Tuesday, 24 July (held at Eagles Club in downtown Bozeman), and the symposium dinner on the evening of Thursday, 26 July (held at Deer Park Chalet, Bridger Bowl). During the closing ceremony, on the afternoon of Friday, 27 July, Dave Roberts presented a special award to Robert Pfister, Research Professor Emeritus in Forest Ecology, University of Montana, in recognition of his major contributions to the vegetation ecology of the region. The co-organizers express their gratitude to the many people who helped to make the symposium a success. These include the other members of the organizing committee (Steve Cooper and Kent Houston), the Scientific Committee (
IAVS Bulletin, 2017
The IAVS Annual Symposium in Palermo is over and we are full of various experiences and beautiful... more The IAVS Annual Symposium in Palermo is over and we are full of various experiences and beautiful memories of all the sunny days, encounters, smileys, debates, lectures, flowers, mountains, landscapes, monuments, foods, drinks, songs, ... Some of them are reflected in this Bulletin issue, some others will be shared in the next issues. Many thanks to Riccardo Guarino and the local team of organizers for their perfect job and extraordinary comfort and hospitability during the Symposium!
Northeastern Naturalist, 2018
Theory and models in vegetation science, 1987
Simulated vegetation data were used to assess the relative robustness of ordination techniques to... more Simulated vegetation data were used to assess the relative robustness of ordination techniques to variations in the model of community variation in relation to environment. The methods compared were local nonmetric multidimensional scaling (LNMDS), detrended correspondence analysis (DCA), Gaussian ordination (GO), principal components analysis (PCA) and principal coordinates analysis (PCoA). Both LNMDS and PCoA were applied to a matrix of Bray-Curtis coefficients. The results clearly demonstrated the ineffectiveness of the linear techniques (PCA, PCoA), due to curvilinear distortion. Gaussian ordination proved very sensitive to noise and was not robust to marked departures from a symmetric, unimodal response model. The currently popular method of DCA displayed a lack of robustness to variations in the response model and the sampling pattern. Furthermore, DCA ordinations of two-dimensional models often exhibited marked distortions, even when response surfaces were unimodal and symmetric. LNMDS is recommended as a robust technique for indirect gradient analysis, which deserves more widespread use by community ecologists.
Palaeogeography, Palaeoclimatology, Palaeoecology, 1996
Restoration Ecology, 2008
Dispersal limitation can retard natural establishment of desirable species on restoration sites, ... more Dispersal limitation can retard natural establishment of desirable species on restoration sites, especially where landscapes are fragmented, but dispersal limitation is assumed to become less critical with time as early colonists become reproductively mature. Distribution patterns of recruiting trees in a 20‐year‐old passively restored bottomland in northeast Louisiana suggested persistent dispersal limitation in some bottomland hardwood species and influence of dense shrub patches on colonization. To test these hypotheses, we measured seed rain as a function of distance to seed source and association with shrub cover. Seed rain of the wind‐dispersed Fraxinus pennsylvanica was highest near the forest edge, except where mature recruits occurred. Although shrub presence did not influence dispersal of F. pennsylvanica, its negative influence on probability of occurrence in the sapling layer suggests that shrub cover may limit its regeneration. The bird‐dispersed Crataegus viridis and I...
Canadian Journal of Forest Research, 1999
Advances in Atmospheric Sciences, 1990
Sea-surface temperature (SST) in the eastern, equatorial Pacific and rain days over China in summ... more Sea-surface temperature (SST) in the eastern, equatorial Pacific and rain days over China in summer are analysed using correlation moments that is proposed by author and principal component analysis(PCA). Occurrences of the strong rain-day anomalies over China are associated with extreme SSTs in some years. Areas significantly affected by the phenomena include North and Northeast China.
IAVS Bulletin
Heinrich E. Weber 1995 putting brambles collected during a field trip in the herbarium press
Civil Engineering Studies, Illinois Center for Transportation Series, 2014
Seed variety performance data for establishing temporary vegetative cover was collected at four I... more Seed variety performance data for establishing temporary vegetative cover was collected at four Illinois locations at four planting seasons. Current Illinois Department of Transportation (IDOT) standard specifications call for a mixture of perennial rye and spring oats for temporary vegetative cover, with no variation for time of year or site conditions. That mixture has demonstrated some success; however, for every location and time of year, this study identified at least one seed variety that demonstrated performance superior to the specified mix. Temporary seeding specifications currently employed by nearby states were reviewed and compared with Illinois’ specifications. In addition to seed variety, the effectiveness of seed bed preparation using a power rake and the effectiveness of straw-mat and loose wheat-straw mulching methods were investigated. Based on the observed results, the research team has proposed modifying temporary seeding recommendations to reflect seeding date a...
IAVS Bulletin, 2019
Taiwan's cloud forest dominated by Fagus hayatae (Lalashan, 2017, above) and Chamaecyparis obtusa... more Taiwan's cloud forest dominated by Fagus hayatae (Lalashan, 2017, above) and Chamaecyparis obtusa var. formosana, covered by epiphytes (Smangus, 2009, below).
IAVS Bulletin, 2019
Social events included a welcome reception and mixer on the evening of Sunday, 22 July (held at S... more Social events included a welcome reception and mixer on the evening of Sunday, 22 July (held at Story Mansion, a historic home in Bozeman), a music jam and social on the evening of Tuesday, 24 July (held at Eagles Club in downtown Bozeman), and the symposium dinner on the evening of Thursday, 26 July (held at Deer Park Chalet, Bridger Bowl). During the closing ceremony, on the afternoon of Friday, 27 July, Dave Roberts presented a special award to Robert Pfister, Research Professor Emeritus in Forest Ecology, University of Montana, in recognition of his major contributions to the vegetation ecology of the region. The co-organizers express their gratitude to the many people who helped to make the symposium a success. These include the other members of the organizing committee (Steve Cooper and Kent Houston), the Scientific Committee (
IAVS Bulletin, 2019
Social events included a welcome reception and mixer on the evening of Sunday, 22 July (held at S... more Social events included a welcome reception and mixer on the evening of Sunday, 22 July (held at Story Mansion, a historic home in Bozeman), a music jam and social on the evening of Tuesday, 24 July (held at Eagles Club in downtown Bozeman), and the symposium dinner on the evening of Thursday, 26 July (held at Deer Park Chalet, Bridger Bowl). During the closing ceremony, on the afternoon of Friday, 27 July, Dave Roberts presented a special award to Robert Pfister, Research Professor Emeritus in Forest Ecology, University of Montana, in recognition of his major contributions to the vegetation ecology of the region. The co-organizers express their gratitude to the many people who helped to make the symposium a success. These include the other members of the organizing committee (Steve Cooper and Kent Houston), the Scientific Committee (
IAVS Bulletin, 2017
The IAVS Annual Symposium in Palermo is over and we are full of various experiences and beautiful... more The IAVS Annual Symposium in Palermo is over and we are full of various experiences and beautiful memories of all the sunny days, encounters, smileys, debates, lectures, flowers, mountains, landscapes, monuments, foods, drinks, songs, ... Some of them are reflected in this Bulletin issue, some others will be shared in the next issues. Many thanks to Riccardo Guarino and the local team of organizers for their perfect job and extraordinary comfort and hospitability during the Symposium!