Bibliografias temáticas / Tussock grasslands

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Literatura científica selecionada sobre o tema "Tussock grasslands"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 28 de janeiro de 2023

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Artigos de revistas sobre o assunto "Tussock grasslands"

Gutiérrez-Salazar, Patricia, and Paul M. Ramsay. "Physiognomic responses of páramo tussock grass to time since fire in northern Ecuador." Revista Peruana de Biología 27, no. 2 (May 24, 2020): 205–14. http://dx.doi.org/10.15381/rpb.v27i2.17876.

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Ecologically-sound management plans for high-altitude grasslands of the Andes depend on an understanding the responses of plants to fire, especially the dominant tussock grasses. This study considers physiognomic responses of tussock grass in 13 sites in northern Ecuador with a known fire history, with time since fire 0.5–10 y, and a control site which had not been burned for at least 40 y. At each site, we assessed vegetation height, basal cover of the tussocks, and the ratio of dead:live leaves in tussocks. We also measured light at ground level. As recovery time increased, tussock cover and

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Rogers, G. M., and J. R. Leathwick. "North Island serai tussock grasslands: 2. Autogenic succession: Change of tussock grassland to Shrubland." New Zealand Journal of Botany 32, no. 3 (July 1994): 287–303. http://dx.doi.org/10.1080/0028825x.1994.10410472.

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Hunter, John T., and Vanessa H. Hunter. "Tussock and sod tussock grasslands of the New England Tablelands Bioregion of eastern Australia." Pacific Conservation Biology 22, no. 1 (2016): 12. http://dx.doi.org/10.1071/pc15037.

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We surveyed temperate montane natural grasslands across the New England Tablelands Bioregion (NETB) and assessed the phytosociology, occurrence and threats to these assemblages. In total, 123 full floristic survey plots were placed within natural grasslands across the NETB. Mapping was undertaken within a subset of the NETB using ADS40 imagery. Analysis of the floristic data was performed using the Kulzynski association measure and UPGMA fusion strategy. Canonical correspondence analysis was performed with species data in association with 42 environmental variables. An estimated 25 000 ha of n

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Lowther, W. L., M. E. Wedderburn, and K. D. Trainor. "Reproductive phenology and natural reseeding of ‘Grasslands Maku’Lotus pedunculatusin tussock grassland environments." New Zealand Journal of Agricultural Research 35, no. 2 (July 1992): 157–62. http://dx.doi.org/10.1080/00288233.1992.10417713.

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Wearne, L. J., and J. W. Morgan. "Floristic composition and variability of subalpine grasslands in the Mt Hotham region, north-eastern Victoria." Australian Journal of Botany 49, no. 6 (2001): 721. http://dx.doi.org/10.1071/bt01025.

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Subalpine grasslands in the Mt Hotham area, Victoria, are a common feature of cold-air drainage valleys at elevations of 1260–1660 m. Here, the pooling of cold air prevents trees from establishing and results in a distinct grassland community, composed of tussock grasses and a wide variety of intertussock species. Despite their common occurrence in the region, such grasslands have yet to be fully described. This study focused on identifying the floristic composition of subalpine grasslands across 51 sites in the vicinity of Mt Cope, Dinner Plain and Mt Hotham. The vegetation was sampled from 1

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Mark, AF. "Effects of Burning and Grazing on Sustainable Utilization of Upland Snow Tussock (Chionochloa spp) Rangelands for Pastoralism in South Island, New Zealand." Australian Journal of Botany 42, no. 2 (1994): 149. http://dx.doi.org/10.1071/bt9940149.

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The upland (800-2000 m) snow tussock (Chionochloa spp.) rangelands of South Island, New Zealand have a long history of burning that pre-dates human occupation during the last millennium. Their present extent in part reflects their ability to displace a range of woody vegetation, including forest, through tolerance of periodic fne. Research has confirmed the general tolerance of these grasslands to fire, though recovery of some features (e.g. biomass and flowering potential) may take more than 14 years. Mammalian grazing, by contrast, is a recent phenomenon, associated with European settlement

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Rogers, G. M., and J. R. Leathwick. "North Island seral tussock grasslands. 3. The influence of heather (Calluna vulgaris) on rates of change from tussock grassland to shrubland." New Zealand Journal of Botany 34, no. 4 (December 1996): 473–87. http://dx.doi.org/10.1080/0028825x.1996.10410128.

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García, Andrés, Alejandro Loydi, and Roberto A. Distel. "Temporal and spatial variation in the soil seed bank of Nassella trichotoma (serrated tussock) in its native range." Australian Journal of Botany 69, no. 1 (2021): 45. http://dx.doi.org/10.1071/bt20046.

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Serrated tussock (Nassella trichotoma (Nees) Hack. ex Arechav) is an unpalatable grass species that has been expanding in its native range and invading non-native ranges. In this study in its natural environment, we aimed to describe the spatial relationship between seed density, the cover and density of standing individuals of serrated tussock, the seasonal variation in the seed density in the soil seed bank, and to compare these results with those reported in non-native ranges. We took soil samples seasonally and recorded the cover and density of standing individuals of serrated tussock at t

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Martin, HA, and A. McMinn. "Late Cainozoic Vegetation History of North-Western Australia, From the Palynology of a Deep Sea Core (ODP Site 765)." Australian Journal of Botany 42, no. 1 (1994): 95. http://dx.doi.org/10.1071/bt9940095.

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In the late Miocene, casuarinaceous forests were predominant in north-western Australia. Through the Pliocene and Pleistocene, Casuarinaceae declined and Poaceae increased, until grasslands predominated. Acacia and some other shrub species were present, suggesting possible shrublands. Surprisingly, however, there were very few Myrtaceae; hence, eucalypt dominated vegetation was never present in this part of Australia. The present vegetation of Acacia shrublands and tussock/hummock grasslands developed, therefore, from casuarinaceous forests. The late Cainozoic palaeovegetation is compared with

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Yang, Ting Ting, Peng Li, Peng Tao Liu, and Xin Hong Wu. "Distribution of Grassland Biomass Carbon Storage in China." Advanced Materials Research 518-523 (May 2012): 183–88. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.183.

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Grassland ecosystems plays a very important role in the global carbon cycle，But measured data is very lack. In this paper, based on the ground survey data of grassland in fourteen provinces in 2008 and satellite remote sensing data, biomass carbon storage in grassland ecosystem in China is estimated. The main conclusions are as follows: China's total grassland area is about 331.41×104 km2, the total biomass carbon storage in grassland ecosystem in China in 2008 was 951.73 TgC, The carbon storage in aboveground and belowground were 161.99 and 789.74 TgC respectively. Carbon storage of Undergrou

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Mais fontes

Teses / dissertações sobre o assunto "Tussock grasslands"

Dickinson, Yvette L. "The spatial patterning of Hieracium pilosella invaded short tussock grasslands." Thesis, University of Canterbury. School of Forestry, 2008. http://hdl.handle.net/10092/1526.

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Hieracium pilosella is an invasive weed of New Zealand's short tussock grasslands. Since the 1960s, the abundance of H. pilosella has dramatically increased; it is now thought to occur in 6 million hectares of New Zealand (Espie, 2001), predominantly in grasslands. It is at least common in 42% of this area (Espie, 2001). Ecology is inherently spatial and as plants closely interact with their direct neighbours, the spatial arrangement of plants is vital to their functioning. A handful of recently published articles have implicated spatial structure of plant communities in theories of plant comp

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Steer, Zuni. "Merino Sheep Habitat Use in Canterbury High Country Tall Tussock Grasslands." Thesis, University of Canterbury. Forestry, 2012. http://hdl.handle.net/10092/7270.

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Summary 1. The goals of this thesis were to determine whether Merino sheep use habitat at random. Specifically, this research was undertaken to identify areas of intensive use, determine daily activity patterns, explore habitat use between activities, between sheep, define home ranges and to explore the influence of weather on habitat use. 2. Sixteen Merino ewes were monitored using GPS collars recording locations every 15 minutes. A weather station was set up at 1380 m a.s.l. to record weather variables at the study site. 3. Merino ewes do not select and utilise habitat in proportion to its a

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Day, Nicola J. "Two decades of vegetation change across tussock grasslands in New Zealand's South Island." Master's thesis, Lincoln University. Bio-Protection and Ecology Division, 2008. http://theses.lincoln.ac.nz/public/adt-NZLIU20080304.145252/.

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New Zealand's South Island tussock grasslands have been highly modified by human activities, including burning, grazing and introductions of exotic plants for pastoralism. Studies suggest that tussock grasslands are degraded, in that native species have declined, and exotic species have increased in both diversity and abundance. These trends are primarily thought to be related to the impacts of grazing and subsequent grazing removal. Few studies have assessed long-term changes that have occurred in tussock grasslands, and those that have are generally limited to one particular location. This t

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Bloor, Marcus. "Review of current vegetation monitoring on privately protected land under ongoing economic use (grazing)." Thesis, University of Canterbury. School of Forestry, 2009. http://hdl.handle.net/10092/3681.

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There has been a noticeable shift in focus in biodiversity research in New Zealand over recent decades. Research has traditionally focused on biodiversity protection on the public estate, which was comprised primarily of ecosystems with lower productive potential (generally over 500m asl). Private lands generally have higher production potential and are often used for intensive cultivation and agricultural practices. They still however have significant potential for protecting biodiversity values. One of the key tools for protecting biodiversity values on privately owned lands in the Canterbur

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Dixon, Katherine Marguerite, and n/a. "Biodiversity along a gradient of modification : plant invertebrates and reptile diversity in mid-altitude tall tussock (Chionochloa rigida) grasslands, eastern Central Otago, New Zealand." University of Otago. Department of Botany, 2005. http://adt.otago.ac.nz./public/adt-NZDU20070130.154858.

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This thesis set out to examine the soils, plants, lichens, invertebrates and common skinks along a gradient of habitat modification. This gradient was represented by ten study sites, of varying management histories, in a mid altitude tall tussock (Chionochloa spp.) grassland in eastern Central Otago. One extreme of the gradient was represented by intact tall tussock plants with a high density of inter tussock vegetation. The other extreme was represented by intensively managed exotic pasture. Native plants, invertebrates and reptiles were present along the entire gradient of modification and

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Mason, Norman, and n/a. "Functional diversity and ecosystem-level processes in a short-tussock grassland." University of Otago. Department of Botany, 2006. http://adt.otago.ac.nz./public/adt-NZDU20061024.114054.

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Increased functional diversity has been linked to an increase in ecosystem level processes (ELPs), such as productivity, ecosystem reliability and invasion resistance. However, there has been no exact definition of functional diversity and it is not known which indices are appropriate for its measurement. Consequently, continuous indices have rarely been applied in examination of relationships between functional diversity and ELPs and little is known of the mechanisms linking functional diversity to ELPs. This thesis begins by providing an exact definition of functional diversity, identifying

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Graham, Scott Luiken. "Components of ecosystem carbon dioxide exchange in a New Zealand tussock grassland under soil warming and nitrogen addition." Thesis, University of Canterbury. Biological Sciences, 2012. http://hdl.handle.net/10092/7367.

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Global temperatures are expected to increase by 1.1 to 6.4°C over the next century and, over the same period, nitrogen inputs to terrestrial ecosystems are expected to increase as a result of increased crop fertilisation and atmospheric nitrogen deposition. Both of these global change drivers are expected to affect net carbon balance by increasing both gross primary production and ecosystem respiration, yet the balance between these processes, and the potential interactive effects of the drivers, require quantification. The ability to accurately predict the effects of warming and nitrogen ad

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Meffin, Ross. "Invasion success and impacts of Hieracium lepidulum in a New Zealand tussock grassland and montane forest." Lincoln University, 2010. http://hdl.handle.net/10182/1808.

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Invasive species represent a major concern; they can result in serious ecological and economic losses and are recognised as one of the most serious threats to global species diversity. Plant invasions are of particular concern in New Zealand, which has high proportions of both naturalised and endemic plant species. In this thesis I focussed on the invasive plant Hieracium lepidulum, an exotic weed introduced from Europe to New Zealand prior to 1941. It is invasive in a variety of habitats in the South Island, where it has steadily increased in distribution and abundance over the last 50 years

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Thorpe, Andrea. "A study on the main factors affecting the competitive growth of Themeda triandra (Kangaroo grass) and the introduced weed, Nassella trichotoma (Serrated tussock)." Thesis, 1994. https://vuir.vu.edu.au/32996/.

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Little published information is available on the levels of soil nutrients and soil moisture on remnants of native (Basalt Plains) grasslands. This study investigated the association of soil nutrients and moisture with stands of the native grass Themeda triandra (Kangaroo Grass) and the noxious weed Nassella trichotoma (Serrated Tussock). Both mature and immature (i.e. recently burnt) stands of T. triandra and N. trichotoma were investigated, on disturbed and undisturbed soil.

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Dickinson, Yvette. "The spatial patterning of Hieracium pilosella invaded short tussock grasslands : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Environmental Sciences in the University of Canterbury /." 2008. http://hdl.handle.net/10092/1526.

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Livros sobre o assunto "Tussock grasslands"

Ashdown, Michael. Tussock grasslands: Landscape values and vulnerability. [Wellington]: New Zealand Environmental Council, 1987.

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White, E. G. New Zealand tussock grassland moths: A taxonomic and ecological handbook based on light-trapping studies in Canterbury. Lincoln, N.Z: Manaaki Whenua Press, 2002.

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Payton, I. J. Fire-induced changes to the vegetation of tall-tussock (Chionochloa rigida) grassland ecosystems. Wellington, N.Z: Publishing Team, Dept. of Conservation, 2009.

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New Zealand. Office of the Parliamentary Commissioner for the Environment., ed. Sustainable land use for the dry tussock grasslands in the South Island. Wellington, N.Z: Office of the Parliamentary Commissioner for the Environment, 1991.

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P, Barratt Barbara I., and New Zealand. Dept. of Conservation., eds. Impact of fire on tussock grassland invertebrate populations. Wellington, N.Z: Publishing Team, Dept. of Conservation, 2009.

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Capítulos de livros sobre o assunto "Tussock grasslands"

Murray, T. J., K. J. M. Dickinson, and B. I. P. Barratt. "Associations between weevils (Coleoptera: Curculionidea) and plants, and conservation values in two tussock grasslands, Otago, New Zealand." In Arthropod Diversity and Conservation, 109–23. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/978-1-4020-5204-0_8.

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Allen, Will, and Chris Jacobson. "Learning About the Social Elements of Adaptive Management in the South Island Tussock Grasslands of New Zealand." In Adaptive Environmental Management, 95–116. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9632-7_6.

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