Vegetation structure
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The Victorian Alpine Plot Network vegetation data package contains vegetation data collected at a sub-set of the 481 long term monitoring plots which have been established in Australian Alps and in Tasmania. The sampling regime within the Victorian Network generally consists of multiple randomly positioned transects within sites, (rather than ‘plots’ sensu stricto), with each site, and/or transect geo-located. Point quadrats are taken at fixed intervals along each transect. The number of transects within sites, and sampling frequency varies from annual to decadal, depending on site and purpose. This general array of sampling transects, point quadrats along transects and floristic quadrats is consistent between grassland and snowpatch monitoring sites, although the number of transects and floristic quadrats needed to detect change in key variables (vegetation cover, bare ground, etc) at each site varies over time. There are also long-term monitoring sites in wetlands. This is part of a much larger dataset that spans from 1944, when plot were set up to document long-term changes in ecosystem composition and structure in relation to disturbance (see methods for more information). The Victorian Alpine Plot Network research plots are revisited on a 2-10 years basis. A synopsis of related data packages which have been collected as part of the Victorian Alpine Plot Network’s full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/victorian-alpine
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The Woodland Restoration Plot Network Vegetation Structure and Composition Data Package contains vegetation floristics and structure survey data for thirty-six 0.1 hectare sites which were established on retired farmland that includes a mosaic of restored vegetation (native plantings) of varying ages juxtaposed with patches of remnant vegetation and untreated, abandoned pasture. All sites were originally woodland prior to agricultural development about 200 years ago. The Woodland Restoration Plot Network research plots commenced in 1992 and have been revisited every 3-4 years since 2001. A synopsis of related data packages which have been collected as part of the Woodland Restoration Plot Network’s full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/woodland-restoration
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This package represents all data from surveys of vegetation within the Alpine Long Term Monitoring — Community Changes project. The surveys began in 1947, and the most recent is from 2013. As further surveys are conducted the new data will be added to this package. The Victorian Alpine Plot Network vegetation data package contains vegetation data collected at a sub-set of the 481 long term monitoring plots which have been established in Australian Alps and in Tasmania. The sampling regime within the Victorian Network generally consists of multiple randomly positioned transects within sites, (rather than ‘plots’ sensu stricto), with each site, and/or transect geo-located. Point quadrats are taken at fixed intervals along each transect. The number of transects within sites, and sampling frequency varies from annual to decadal, depending on site and purpose. This general array of sampling transects, point quadrats along transects and floristic quadrats is consistent between grassland and snowpatch monitoring sites, although the number of transects and floristic quadrats needed to detect change in key variables (vegetation cover, bare ground, etc) at each site varies over time. There are also long-term monitoring sites in wetlands. The Victorian Alpine Plot Network research plots are revisited on a 2–10 years basis. A synopsis of related data packages which have been collected as part of the Victorian Alpine Plot Network’s full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/victorian-alpine
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This data package comprises data from a series of hemispherical photographs taken in July 2013 and May 2015 at the Connell Rainforest Plot near O’Reilly’s Guest House, 85 km south of Brisbane, Queensland. The 2.0 ha site consists of separate 1.0 ha plots separated by 600 m, but they have always been treated as a single entity. The site consists of mapped and tagged trees in all size classes from tiny seedlings to large canopy trees. Rates of recruitment, growth and mortality have been measured at intervals of 1-6 years with records extending back to 1963. The primary determinant of growth rate in the understory is light. Gaps created by the death of large canopy trees have been systematically surveyed many times over the decades until 2002, with the boundaries of the gaps being noted on hand drawn maps. These maps have never been digitized, and the originals are held at the University of California. Copies of some later maps are held by Green at La Trobe University. A digital camera with a fish-eye lens was used for the first time in 2013 to measure understory light environments along the seedling transects. A synopsis of related data packages which have been collected as part of the Connell Rainforest Plot Network’s full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/connell-rainforest.
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Human activities, particularly agriculture, have transformed much of the world’s terrestrial environment. Within these anthropogenic landscapes, a variety of relictual and semi-natural habitats exist, which we term countryside elements. The habitat value of countryside elements (‘elements’) is increasingly recognised. In association with the Nanangroe Plot network in the South-West Slopes of New South Wales, we quantify the relative value of four kinds of such ‘elements’ (linear roadside remnants, native vegetation patches, scattered trees and tree plantings) used by a threatened Australian arboreal marsupial, the squirrel glider Petaurus norfolcensis. We examined relationships between home range size and the availability of each ‘element’ and whether the actual usage was relative to predicted levels of usage. The usage of ‘elements’ by gliders was largely explained by their availability, however there was a preference for native vegetation patches and scattered trees. We found home range size was significantly smaller with increasing area of scattered trees and a contrasting effect with increasing area of linear roadside remnants or native vegetation patches. Our work showed that each ‘element’ was used and as such had a role in the conservation of the squirrel glider, but their relative value varied. We illustrate the need to assess the conservation value of countryside elements so they can be incorporated into the holistic management of agricultural landscapes. This work demonstrates the disproportional value of scattered trees, underscoring the need to specifically incorporate and /or enhance the protection and recruitment of scattered trees in biodiversity conservation policy and management. (Crane, M.J., Lindenmayer, D.B., Cunningham, R.B., 2014. The Value of Countryside Elements in the Conservation of a Threatened Arboreal Marsupial Petaurus norfolcensis in Agricultural Landscapes of South-Eastern Australia—The Disproportional Value of Scattered Trees. PLOS One. 9(9): e107178 DOI: 10.1371/journal.pone.0107178).
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This vegetation data package comprises structure and floristic data for selected points across grids described in related data packages. Vegetation attributes were recorded in an area occupying 2.5 m radius around six traps on each trapping grid and have been aggregated to grid level data. Percentage cover of all plant species, flowering index and seeding index (from 0-5, where 0 is no flowering or seeding and 5 is maximal flowering/seeding) were recorded and are presented here as plot averages which represent the mean amount of flowering or seeding per species. The network program uses a core of 12 sites which are sampled every April-May. The trapping survey aims to quantitatively track long-term shifts in biodiversity and ecological processes in relation to key drivers, including unpredictable rainfall and droughts, fire, feral predators and grazing. A synopsis of related data packages which have been collected as part of the Desert Ecology's full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/desert-ecology.
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The Victorian Alpine Plot Network Vegetation Data Package contains vegetation data for four sites situated on the Bogong High Plains. Sites, which comprise multiple 1 square metre plots, are visited every second snow-free season. Vegetative growth is recorded in seven selected species, namely Carex breviculmis, Poa hiemata (Graminiods) and Celmisia pugioniformis, Erigeron bellidioides, and Plantago euryphylla (Forbs), and stems of Asterolasia trymalioides and Pimelea alpine by measuring growth amounts and converting measurements into a relative rate. This is part of a larger dataset that spans from during data collected in 2003 to document long-term effects of climate change (see methods for more information). The Victorian Alpine Plot Network research plots are revisited on a biannual basis , though measurements taken during surveys differ from visit to visit. A synopsis of related data packages which have been collected as part of the Victorian Alpine Plot Network’s full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/victorian-alpine
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This vegetation data package comprises structure and floristic data for selected points across grids described in related data packages. Vegetation attributes were recorded in an area occupying 2.5 m radius around six traps on each trapping grid and have been aggregated to grid level data. Percentage cover of all plant species, flowering index and seeding index (from 0-5, where 0 is no flowering or seeding and 5 is maximal flowering/seeding) were recorded and are presented here as plot averages which represent the mean amount of flowering or seeding per species. The network program uses a core of 12 sites which are sampled every April-May. The trapping survey aims to quantitatively track long-term shifts in biodiversity and ecological processes in relation to key drivers, including unpredictable rainfall and droughts, fire, feral predators and grazing. A synopsis of related data packages which have been collected as part of the Desert Ecology's full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/desert-ecology.
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This vegetation data package comprises structure and floristic data for selected points across grids described in related data packages. Vegetation attributes were recorded in an area occupying 2.5 m radius around six traps on each trapping grid and have been aggregated to grid level data. Percentage cover of all plant species, flowering index and seeding index (from 0-5, where 0 is no flowering or seeding and 5 is maximal flowering/seeding) were recorded and are presented here as plot averages which represent the mean amount of flowering or seeding per species. The network program uses a core of 12 sites which are sampled every April-May. The trapping survey aims to quantitatively track long-term shifts in biodiversity and ecological processes in relation to key drivers, including unpredictable rainfall and droughts, fire, feral predators and grazing. A synopsis of related data packages which have been collected as part of the Desert Ecology's full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/desert-ecology.
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We measured 5 years of growth of 335 Cyathea australis and Dicksonia antarctica after a large wildfire in 2009 in south-eastern Australia. The ferns were in 4 separate geographic locations (Wallaby Creek, Marysville, Toolangi and O’Shannassy) and sites within each area had different environmental variables, which were measured (slope, aspect, elevation). Tree ferns had overall height measured using a tape measure and the new post-fire growth measured using calipers. The tree ferns were measured to determine average growth rates of the two species and which of the environmental variables were important for fern growth. We found growth rates of these two species were largely unaffected by static environmental variables or geographic location. However, growth rates were significantly related to initial height at the time of the fire; a finding consistent in both species and all geographic locations. These data underpinned the conclusions and analysis in the paper "Non-linear growth in tree ferns, Dicksonia antarctica and Cyathea australis" by David P. Blair, Wade Blanchard, Sam C. Banks, David B. Lindenmayer published in PLOS ONE (https://doi.org/10.1371/journal.pone.0176908).