Log in

Relevant bibliographies by topics / Growth of forest species / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Growth of forest species.

Dissertations / Theses on the topic 'Growth of forest species'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Growth of forest species.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Karst, Justine. "Ecological separation among fern species in an old-growth forest." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33790.

Full text

Abstract:

The validity of niche-assembly rules in explaining community structure is revisited by testing for ecological separation among ferns. An intensive, fine-scale survey of fern abundance and environmental variation was done in 1-ha of old-growth forest. Three methods of detecting niche segregation (canonical correspondence analysis, detrended correspondence analysis and GIS mapping) suggested that most fern species at the site are distributed according to distinct environmental preferences. The most important gradients separating fern species are first, the amount of soil moisture and second, soi

APA, Harvard, Vancouver, ISO, and other styles

2

Moores, Andrew R. "Understory Growth Dynamics and Mensuration Techniques in Uneven-Aged, Mixed-Species Northern Conifer Stands." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/MooresAR2003.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Kariuki, Maina. "Modelling dynamics including recruitment, growth, and mortality for sustainable management in uneven-aged mixed-species rainforests." Connect to this title online, 2004. http://epubs.scu.edu.au/theses/27/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Turner, I. M. "The response of tree species to canopy gaps in a tropical forest." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235070.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Stern, Rebecca. "Evaluating Climate And Environmental Drivers Of Tree Species’ Growth Within The Northern Forest." ScholarWorks @ UVM, 2019. https://scholarworks.uvm.edu/graddis/1169.

Full text

Abstract:

Northeastern forests are in a period of immense change. While forests are inherently dynamic ecosystems, a range of environmental challenges may cause unique and uncertain transformations within forests moving forward. How trees in northern forests respond to these environmental and anthropogenic changes remains uncertain; reductions and increases in the growth of various species and shifts in current species’ ranges may take place. I analyzed associations between tree growth (assessed using xylem increment cores) and a range of site, climate, and pollution deposition variables for seven major

APA, Harvard, Vancouver, ISO, and other styles

6

Fast, Eleanor. "Diversity of Brachycera (Diptera) in a Quebec old growth forest." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=78359.

Full text

Abstract:

The diversity of Brachycera (Diptera) was studied in an old growth beech-sugar maple forest at Mont St. Hilaire, Quebec. Sampling was carried out weekly from early May to late September 2001 using a malaise trap, pan traps, a newly designed trunk trap and sweep netting. Almost 10,000 specimens from 45 families and over 334 species were collected. The most diverse families were Empididae (43 species), Tachinidae (39 species), Syrphidae (35 species) and Dolichopodidae (24 species). Collecting techniques were compared, with particular reference to the trunk trap designed for this study. NM

APA, Harvard, Vancouver, ISO, and other styles

7

Bowling, Ernest H. "A stand level multi-species growth model for Appalachian hardwoods." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/104295.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Schwan, Melissa Renee, and Melissa Renee Schwan. "Tree Growth Response To Climate Change Across Three Conifer Species In A Navajo Forest." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/621969.

Full text

Abstract:

Conifer forests in the Southwest are predicted to be particularly at risk from increased drought and higher temperatures projected for the region. Higher temperature in the Southwest leads to higher evaporative demand, exaggerating drought effects, and under extreme conditions can stress trees to the point of mortality. Severe droughts are also a well-documented driver of tree-killing forest disturbances, including wildfire and insect outbreaks. Regional projections of forest drought stress show heightened sensitivity of tree growth and disturbances to hotter droughts. Little is known about ho

APA, Harvard, Vancouver, ISO, and other styles

9

Klinka, Karel, D. Bradley Collins, and Christine Chourmouzis. "Investigation into the productivity of single- and mixed-species, second-growth stands of western hemlock and western redcedar." Forest Sciences Department, University of British Columbia, 2001. http://hdl.handle.net/2429/698.

Full text

Abstract:

In BC, it is required that harvested areas be regenerated with a mixture of tree species whenever appropriate to the site. This policy is based upon the assumption that increases in stand productivity, reliability, and/or biodiversity can be achieved in mixed-species stands. However, the knowledge justifying this policy is at best incomplete. Differences in forest productivity of mixed-species stands have been attributed mostly to competition. However, an increasing number of studies are providing evidence to support alternate theories, in which positive plant interactions play a major role

APA, Harvard, Vancouver, ISO, and other styles

10

Reygadas, Fabiola. "The effect of soil fertility on the growth of Carex species from temperate forest environments." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0001/MQ44257.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Hans, Ralston Ronald. "Initial growth responses to controlled release fertilizer application at establishment of commercial forestry species in South Africa." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85609.

Full text

Abstract:

Thesis (MScFor)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: In South Africa fertilizer applications at establishment is a common practice in the forestry industry. Recommendations are based on past research with conventional sources (CV) and as a result there have only been slight improvements in additional plantation production over recent years. The objective of this study was to investigate initial stand responses in terms of leaf are index (LAI), foliar nutrient content, biomass index (BI) and volume growth to the application of controlled release fertilizers (CRF) at re-establish

APA, Harvard, Vancouver, ISO, and other styles

12

Sapkota, Indra. "Species diversity, regeneration and early growth of Sal forests in Nepal responses to inherent disturbance regimes /." Alnarp : Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200991.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Kenefic, Laura. "Leaf Area, Stemwood Volume Growth, and Stand Structure in a Mixed-Species, Multi-Aged Northern Conifer Forest." Fogler Library, University of Maine, 2000. http://www.library.umaine.edu/theses/pdf/KeneficLS2000.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Wason, Jay W. "Environmental controls on forest tree species growth and distributions along elevation gradients in the northeastern United States." Thesis, State University of New York Col. of Environmental Science & Forestry, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10130745.

Full text

Abstract:

<p> Tree species are expected to respond to recent and future changes in climate and other environmental factors such as pollution. In this dissertation I studied environmental controls on the growth and distributions of forest tree species in mountains of the northeastern United States, focusing particularly on spruce-fir forests. To determine if mountains could provide climate change refugia for tree species, I collected <i>in situ</i> microclimate measurements to quantify elevational shifts in suitable temperature regimes over time. To determine how species elevation distributions have chan

APA, Harvard, Vancouver, ISO, and other styles

15

Craig, Jared Matthew. "EFFECTS OF MIDSTORY REMOVAL AND SHOOT CLIPPING ON THE GROWTH AND DEVELOPMENT OF THREE OAK SPECIES." UKnowledge, 2012. http://uknowledge.uky.edu/forestry_etds/9.

Full text

Abstract:

Problems developing tall oak seedlings of high abundance have become a concern throughout many eastern hardwood forests. The decline in oak seedling recruitment into canopy positions is often attributed to the increasing abundance of shade tolerant midstory species, especially red maple (Acer rubrum L.). Studies have shown that increasing light to the understory by way of a midstory removal has the ability to favor oak seedlings over competitors. The majority of studies to date have examined northern red (Quercus rubra L.) and cherrybark oak (Quercus pagoda Raf.) on productive sites, but relat

APA, Harvard, Vancouver, ISO, and other styles

16

Larsson-Stern, Marie. "Aspects of hybrid larch (Larix x eurolepis Henry) as a potential tree species in southern Swedish forestry /." Alnarp : Southern Swedish Forest Research Centre, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/8907884.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Kashimshetty, Yamini. "Population growth and genetic diversity dynamics of modeled conservation methodologies for threatened plant species." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1468512768.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Chappelka, Arthur H. "The combined effects of ozone, sulfur dioxide and simulated acid rain on the growth of three forest tree species." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/74726.

Full text

Abstract:

Nine-week-old yellow-poplar and green and white ash were exposed to various concentrations of O₃ (0.00 to 0.15 ppm) and/or SO₂ (0.08 ppm), 4 hr/d, 5d/wk in combination with simulated rain (pHs 5.6, 4.3, 3.0), 1 hr/d, 2 d/wk, for 5 or 6 wk under controlled laboratory conditions. Pollutant exposures resulted in alterations in seedling biomass accumulation, growth rates, changes in carbon allocation among plant parts and modification in physiological processes associated with gas exchange. Ozone (0.010 ppm) and SO₂ together caused a significant decrease in height growth and biomass and an increas

APA, Harvard, Vancouver, ISO, and other styles

19

Jackson, Barry Clayton. "Assessing Species Composition in Second Growth and Old Growth Rich Coves of the Southern Appalachians." NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-01042008-123757/.

Full text

Abstract:

I compared composition of plant communities in second growth (60 - 80 years old) and old growth rich coves for evidence of reduced abundance or presence of plant species in the second growth communities. I evaluated the utility of both univariate and multivariate analytical methods. Data were collected from twenty-six 1000 m2 plots located across three distinct mountain ranges and geologies in the southern Appalachians of North Carolina. Comparison of nested and non-nested sampling protocols found no statistical differences in the parameters of species-area curves. Furthermore, I found no diff

APA, Harvard, Vancouver, ISO, and other styles

20

Klinka, Karel, Pal Varga, Louise E. M. de Montigny, and Christine Chourmouzis. "The structure of single- and mixed-species, second-growth stands of Western hemlock and Western redcedar." Forest Sciences Department, University of British Columbia, 2001. http://hdl.handle.net/2429/708.

Full text

Abstract:

The structure of a forest stand is characterized by: (a) species composition, (b) age, (c) size (diameter and height), and (d) spatial (horizontal and vertical) arrangement of the trees. Depending on the species, site, and disturbance history, the stand structure varies with time, thus providing a snapshot of a particular development stage. Research on growth and stand structure has shown that the spatial distribution of trees is one of the key determinants of stand productivity. Forest inventories and ecological surveys carried out in British Columbia (BC) have shown that the structure o

APA, Harvard, Vancouver, ISO, and other styles

21

Lindkvist, Tilda. "Strukturella förändringar i Östergötlands skogar : En jämförelse mellan år 1927 och 1983–2017." Thesis, Linköpings universitet, Biologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-154336.

Full text

Abstract:

Humans have affected the Swedish forests for a long time, mainly through agriculture and forestry. Since the beginning of the 20th century, a lot of changes have taken place in forest policy, which have affected the structures of our forests, such as tree age, size and species distributions. By using information from different types of historical data, we can increase our understanding of the earlier structures of forests and how to manage them in the future. This study investigated changes in annual growth and changes in age, diameter, height and tree species distribution in the forests of Ös

APA, Harvard, Vancouver, ISO, and other styles

22

Amazonas, Nino Tavares. "High diversity mixed plantations in Brazil: Eucalyptus intercropped with native tree species." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-07052018-112057/.

Full text

Abstract:

The high cost of restoring tropical forests is one of the greatest obstacle to achieving large-scale restoration. To overcome this barrier, we developed and implemented mixed plantations intercropping Eucalyptus with a high diversity of native tree species. The aim was to create favorable conditions for the regeneration of native species while simultaneously obtaining economic return from the exploitation of Eucalyptus as a commercial pioneer species. The use of Eucalyptus in this system is temporary and it shall be replaced by additional native species after it is harvested. In this research,

APA, Harvard, Vancouver, ISO, and other styles

23

Gindaba, Jiregna. "Water and nutrient relations of selected tree species of Ethiopia." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16050.

Full text

Abstract:

Dissertation (PhD (Bosb))--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: This study was conducted to evaluate and compare the water and nutrient relations of three indigenous deciduous tree species, viz., Cordia africana Lam., Croton macrostachyus Del., Millettia ferruginea (Hochst.) Baker and two widely planted eucalypts, viz., Eucalyptus camaldulensis Dehnh and Eucalyptus globulus Labill from Ethiopia. The study was organized as glasshouse and field observations in Ethiopia. Owing to the lack of baseline studies on the water and nutrient relations of the deciduous tree species,

APA, Harvard, Vancouver, ISO, and other styles

24

Gush, Mark Baudert. "Water-use, growth and water-use efficiency of indigenous tree species in a range of forest and woodland systems in South Africa." Doctoral thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/10565.

Full text

Abstract:

This study was initiated to explore whether indigenous tree species use less water than introduced plantation tree species, whether they use that water more efficiently in terms of biomass accumulation, and consequently whether there is scope for the expansion of indigenous tree production systems in South Africa.

APA, Harvard, Vancouver, ISO, and other styles

25

Mehari, Amanuel. "Growth and suitability of some tree species selected for planting in adverse environments in Eritrea and Ethiopia /." Uppsala : Dept. of Crop Production Ecology, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200591.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Abe, Hitofumi. "Forest management impacts on growth, diversity and nutrient cycling of lowland tropical rainforest and plantations, Papua New Guinea." University of Western Australia. School of Plant Biology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0098.

Full text

Abstract:

[Truncated abstract] Globally, tropical rainforests are noted for their high biodiversity and key roles in carbon storage and influence on climate. Nevertheless, tropical deforestation in many parts of the world continues at an alarming rate. In Papua New Guinea (PNG), tropical rainforest is relatively well maintained, with about 70 % of the land area still covered by primary forest. However, PNG's native forests are coming under increasing pressure, particularly from selective logging for high quality timber. While the forests of PNG, and more broadly the entire New Guinea Island, are recogni

APA, Harvard, Vancouver, ISO, and other styles

27

Silva, Laísa Leocádio. "Substratos para a produção de mudas de jatobá (Hymenea coubaril L.)." Universidade Federal de Pelotas, 2017. http://guaiaca.ufpel.edu.br:8080/handle/prefix/4048.

Full text

Abstract:

Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2018-07-10T16:44:57Z No. of bitstreams: 1 Dissertação Laisa Leocádio.pdf: 1956885 bytes, checksum: 1324d6adb32fbc1efb4c8355b6e366ee (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2018-07-12T14:36:49Z (GMT) No. of bitstreams: 1 Dissertação Laisa Leocádio.pdf: 1956885 bytes, checksum: 1324d6adb32fbc1efb4c8355b6e366ee (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2018-07-12T14:39:06Z (GMT) No. of bitstreams: 1 Dissertação Laisa Leocádio.pdf: 1956885 by

APA, Harvard, Vancouver, ISO, and other styles

28

Cavin, Liam. "Spatial and temporal patterns in the climate-growth relationships of Fagus sylvatica across Western Europe, and the effects on competition in mixed species forest." Thesis, University of Stirling, 2013. http://hdl.handle.net/1893/19992.

Full text

Abstract:

Increases in temperature, altered precipitation patterns, and the occurrence and severity of extreme climatic events have been important characteristics of the climate change observed to date. This has had many and diverse impacts upon the living world, with one recent observation being a global reduction in the net primary production of all terrestrial vegetation. Increases in temperature and the frequency of extreme events are predicted to continue throughout the 21st century, and can be expected to have far reaching effects on global terrestrial ecosystems. Increases in temperature and drou

APA, Harvard, Vancouver, ISO, and other styles

29

Lessa, Bruno FranÃa da Trindade. "Germination and growth of seedling of Enterolobium contorsiliquum (Vell.) Morong depending on the weight of seed, location in fruit and conditions of temperature and light." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9430.

Full text

Abstract:

Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Currently comes increasing the interest with agronomical emphasis by native forest species from Brazil, due its applications in various sectors of the economy. The âtamborilâ (Enterolobium contorsiliquum (Vell.) Morong) is one of these species, presenting importance for the timber, landscape, medical, beekeeping sector, beyond to be indicated for recovery of degraded large areas. The objective of this work was studying the seeds germination and seedlings growth of E. contorsiliquum in function of seeds weight, location on fruit a

APA, Harvard, Vancouver, ISO, and other styles

30

Malone, Meredith B. "Abundance, Fruit Presence, and Growth Enhancement of Prestoea montana and Roystonea borinquena, Two Palm Species of Importance to Amazona vittata (Puerto Rican Parrot), in Río Abajo Forest, Puerto Rico." NCSU, 2007. http://www.lib.ncsu.edu/theses/available/etd-05012007-121725/.

Full text

Abstract:

The endangered Puerto Rican parrot (Amazona vittata) has been bred in captivity for decades, and since 2000, over 50 parrots have been released into native habitats to rebuild wild populations in Puerto Rico. One group of 21 parrots was released into Río Abajo Forest in the karstic region of Puerto Rico in November 2006, where high quality habitat resources exist, but the management of sustainable food resources, such as the fruit of Prestoea montana (sierra palm) and Roystonea borinquena (royal palm), is imperative. An inventory of accessible regions in Río Abajo Forest was conducted to asses

APA, Harvard, Vancouver, ISO, and other styles

31

Clarke, C. R. E. "Variation in growth, wood, pulp and paper properties of nine eucalypt species with commercial potential in South Africa." Thesis, Bangor University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307189.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Day, Susan D. "Growth and Physiology of Several Urban Tree Species in Soils Disturbed by Construction Fill or Compaction." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/28639.

Full text

Abstract:

Experiments were conducted to determine the effects of applying fill soil around existing trees and mechanisms for species tolerance to soil compaction, both common site disturbances in urban forestry. Groups of 22-year-old white oak (Quercus alba) and 13-year-old sweetgum (Liquidambar styraciflua) were subjected to one of three treatments: a control, fill (20 cm of subsoil spread over the root zones), and compacted fill (same as fill soil, but compacted). Additionally, individual trees had tree wells (fill soil pulled away from trunks), or not. After three years, treatments had no consistent

APA, Harvard, Vancouver, ISO, and other styles

33

Andrade, Wirifran Fernandes de. "Atuação de "pulse" na organogênese de Eucalyptus grandis cultivado in vitro." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-07062006-170712/.

Full text

Abstract:

O gênero Eucalyptus tem se mostrado um dos mais vantajosos na produção de bens e serviços florestais pela silvicultura brasileira, principalmente por sua rapidez no crescimento. A propagação vegetativa de Eucalyptus spp. permite a rápida multiplicação de genótipos selecionados alcançando aumento imediato na produtividade dos plantios clonais. Com o objetivo de avaliar o efeito do pulse na propagação in vitro de Eucalyptus grandis, testou-se as interações entre concentrações de BAP (Benzilaminopurina), tempo de exposição e pH, bem como as alterações morfológicas que esses fatores causam na e

APA, Harvard, Vancouver, ISO, and other styles

34

Lemos, Maria Teresa Oliverio. "Prospecção de rizobactérias promotoras de crescimento em quatro espécies arbóreas nativas do Brasil /." Jaboticabal : [s.n.], 2009. http://hdl.handle.net/11449/94905.

Full text

Abstract:

Orientadora: Eliana Gertrudes Macedo Lemos<br>Banca: Cristina Lacerda Soares Petrarolha Silva<br>Banca: Miguel Luiz Menezes Freitas<br>Resumo: A conservação da biodiversidade, implica em cultivar espécies arbóreas nativas que possam ser utilizadas em projetos de reflorestamento, recuperação de áreas degradadas e com o objetivo de obter produtos secundários importantes como madeira e produtos medicinais. O uso de rizobactérias promotoras de crescimento em plantas, vem sendo muito estudado em culturas de importância econômica, devido a sua aplicabilidade em beneficiar o desenvolvimento destas. N

APA, Harvard, Vancouver, ISO, and other styles

35

Bolosha, Uviwe. "Revising the distribution of mangrove forests in South Africa and changes in growth of mangrove species along a latitudinal gradient." Thesis, Rhodes University, 2017. http://hdl.handle.net/10962/7544.

Full text

Abstract:

Mangrove forests are a diverse assemblage of trees and shrubs that are adapted to a saline and tidally inundated environment. The global spread of mangrove species is affected by climate, with most confined to areas that are warmer and moist. At a global scale, temperature limits the distribution of mangrove forests but on a regional scale and local scale, rainfall, river flow and tidal exchange have a strong effect on the distribution and biomass of mangrove forests. Other factors that play a role in limiting growth and distribution of mangroves include accessibility of suitable habitats for

APA, Harvard, Vancouver, ISO, and other styles

36

Yamaguchi, David K., and F. Craig Brunstein. "Special Sanding Films and Sandpapers for Surfacing Narrow-Ring Increment Cores." Tree-Ring Society, 1991. http://hdl.handle.net/10150/262318.

Full text

Abstract:

Special sanding films (400 grit to 23 micron) and fine sandpapers (1200-1500 grit) can be used to surface increment cores containing narrow rings (e.g., >50 rings per cm) so that rings are clearly visible for microscopy and photography.

APA, Harvard, Vancouver, ISO, and other styles

37

Jacques, Rochelle R. "Effects of Microstegium vimineum (Trin.) A. Camus (Asian stiltgrass; Poaceae) on native hardwood seedling growth and survival." Ohio : Ohio University, 2007. http://www.ohiolink.edu/etd/view.cgi?ohiou1180715972.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Taylor, Gregory Watson. "An Ecological and Distributional Analysis of Great Basin Bristlecone Pine (Pinus longaeva)." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7540.

Full text

Abstract:

Understanding the impacts of climate change is critical for improving the conservation and management of ecosystems worldwide. Ecosystems vary along a precipitation and temperature gradient, ranging from tropical jungles to arid deserts. The Great Basin is a semi-arid eco-region that is found within the western United States. Plant communities within the Great Basin range from sagebrush valleys to sub-alpine conifer forests found at high elevation areas. It is predicted that the Great Basin will experience prolonged periods of drought, more intense fires, and greater variability in average ann

APA, Harvard, Vancouver, ISO, and other styles

39

Guichon, Shannon Heather Ann. "Mycorrhizal fungi : unlocking their ecology and role in the establishment and growth performance of different conifer species in nutrient-poor coastal forests." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55748.

Full text

Abstract:

This thesis explored the fungal communities of arbuscular mycorrhizal-dominated Cedar-Hemlock (CH) and ectomycorrhizal-dominated Hemlock-Amabilis fir (HA) forests on northern Vancouver Island, British Columbia, Canada and examined the role of mycorrhizal inoculum potential for conifer seedling productivity. Objectives of this research project were to: (1) examine the mycorrhizal fungal communities and infer the inoculum potential of CH and HA forests, (2) determine whether understory plants in CH and HA forest clearcuts share compatible mycorrhizal fungi with either western redcedar (Thuja pli

APA, Harvard, Vancouver, ISO, and other styles

40

Kübler, Daniel Peter [Verfasser], Reinhard [Akademischer Betreuer] Mosandl, Thomas [Gutachter] Knoke, and Reinhard [Gutachter] Mosandl. "Effect of topography on the distribution of tree species and radial diameter growth of potential crop trees in a tropical mountain forest in southern Ecuador / Daniel Peter Kübler ; Gutachter: Thomas Knoke, Reinhard Mosandl ; Betreuer: Reinhard Mosandl." München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/1220320145/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Zatout, Masoud Moustafa Mohamed. "The roles of exotic and native tree species in preventing desertification and enhancing degraded land restoration in the north east of Libya : reciprocal effects of environmental factors and plantation forestry on each other, assessed by observations on growth and reproductive success of relevant tree species, and environmental factors analysed using multivariate statistics." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5708.

Full text

Abstract:

Today's arid and semi-arid zones of the Mediterranean are affected by desertification, resulting from various factors, including climatic variations and human activities such as overcultivation, overgrazing and deforestation. Afforestation programs are one of the most effective means in preventing desertification. For many years Libya has had afforestation programs in order to restore degraded land and in response to rapid desert encroachment in the north east of Libya, in the area called the Jabal Akhdar (Green Mountain), which has been investigated in this study. The purpose of this research

APA, Harvard, Vancouver, ISO, and other styles

42

Sundström, Alice Ulrika. "Tillväxt och blandskogseffekt i återplanterade objekt : Tecken på spatial inverkan på blandskogseffekt i unga trädbestånd." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-131056.

Full text

Abstract:

2001 skedde ett kraftigt utbrott av Gremeniella abietina (Lagerb.) M. Morelet i området Bergvik, Dalarna. Skogsägarna var tvungna att avverka kraftigt i deras tallbestånd som respons på detta. I de objekt som återplanterades planterades det nya artsammansättningar än vad som planterats tidigare, gran och blandbestånd av gran och tall. I denna studie jämfördes och inventerades medelhöjderna på de återplanterade objektens träd för att skatta arternas framgång i de olika ståndorterna. Gran verkade vara mest lämpat eftersom den växte signifikant bättre än vad tillväxtekvationerna hade förutspått.

APA, Harvard, Vancouver, ISO, and other styles

43

Beltrame, Tiago Pavan. "Restaurando a Ecologia na Restauração: avaliação de sistemas agroflorestais e espécies leguminosas em plantios de restauração ecológica." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/91/91131/tde-26082013-160542/.

Full text

Abstract:

Os remanescentes florestais, refúgios de biodiversidade, estão sob grande pressão antrópica. A Floresta Estacional Semidecidual (Mata Atlântica do Interior) foi a formação florestal mais devastada no bioma Mata Atlântica. Frente ao quadro de destruição florestal, mudanças climáticas e problemas socioeconômicos, somos desafiadosa desenhar e adaptar novos modelos de restauração florestal, associados ao processo de desenvolvimento e geração de renda das comunidades locais. O objetivo deste estudo foi contribuir com a pesquisa em restauração florestal, avaliando práticas de cultivo intercalar de p

APA, Harvard, Vancouver, ISO, and other styles

44

Fick, Tiago Antonio. "ESTABELECIMENTO IN VITRO E PROPAGAÇÃO DE Cordia trichotoma (Vell.) Arrabida ex Steudel (LOURO-PARDO)." Universidade Federal de Santa Maria, 2007. http://repositorio.ufsm.br/handle/1/8798.

Full text

Abstract:

The Forest Sector has an accomplishment to attend the demand for noble wood products, usually get from native Brazilian species as louro-pardo. Therefore, propagation studies of native species are necessary to produce high quality plants for commercial exploitation and to reduce deforestation pressure over remained populations of native species. The objective of this study was to develop protocols of establishment in vitro and propagation of louro-pardo. Time of seed imbibition and disinfection protocols were studied for in vitro seedling establishment. Seeds were imbibed in distilled and auto

APA, Harvard, Vancouver, ISO, and other styles

45

Lemos, Maria Teresa Oliverio [UNESP]. "Prospecção de rizobactérias promotoras de crescimento em quatro espécies arbóreas nativas do Brasil." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/94905.

Full text

Abstract:

Made available in DSpace on 2014-06-11T19:27:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-07-01Bitstream added on 2014-06-13T19:55:59Z : No. of bitstreams: 1 lemos_mto_me_jabo.pdf: 967680 bytes, checksum: a6c9fc3231a065465ff531a2097edf51 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A conservação da biodiversidade, implica em cultivar espécies arbóreas nativas que possam ser utilizadas em projetos de reflorestamento, recuperação de áreas degradadas e com o objetivo de obter produtos secundários importantes como madeira e produtos medicinais. O u

APA, Harvard, Vancouver, ISO, and other styles

46

Pratt, Caroline. "Factors affecting the establishment, growth and survival of native woody plant communities on the Canterbury Plain, New Zealand." Lincoln University, 1999. http://hdl.handle.net/10182/1113.

Full text

Abstract:

The native plant communities of Canterbury, South Island, New Zealand have been severely modified and degraded and the Canterbury Plain (750,000 ha) retains few remnants of its original forest and other ecosystems. The research presented here considers the mutualistic roles of exotic and indigenous species in the process of restoring degraded landscapes. Exotic species may have an important role in the (re) establishment of desired indigenous species, and may influence succession through to a forest dominated by them. One aspect of this work describes indigenous plant community regeneration fa

APA, Harvard, Vancouver, ISO, and other styles

47

Morris, Thomas. "Monitoring the Knysna forest : species, community and forest responses." Bachelor's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/26490.

Full text

Abstract:

Forests are valuable ecosystems to society but are greatly threatened by changing factors from habitat conversion to climate change. South Africa's only extent of indigenous forest is predicted to disappear within the next 30 years. Many challenges are currently faced when trying to detect and interpret directional changes in forests which results in an urgent need to understand any effects that these change factors have on forest ecosystems. We investigate evidence for change in the old growth Lilyvlei Nature Reserve by monitoring growth and dynamics at various levels by examining a 20 year r

APA, Harvard, Vancouver, ISO, and other styles

48

Nawrot, Dorota Anna. "The phytochemistry of Eastern European forest species." Thesis, University of Surrey, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580314.

Full text

Abstract:

This study was a part of the ForestSpecs FP7 EU project. The aim of this project was to utilize the readily available, large volume and low price wood residues from the wood processing industry. The first part of this work involved a comparative study of three extraction techniques, shaking, soxhlet and microwave assisted extraction. The microwave extraction was found to be the most suitable method, as it allowed the results to be achieved with reduced level of solvents, lower energy consumption and faster processing time. The phytochemical investigation of six forestry species: Pinus sylvestr

APA, Harvard, Vancouver, ISO, and other styles

49

Schulze, Mark D. "Ecology and behavior of nine timber tree species in Pará, Brazil : links between species life history and forest management and conservation /." View online version of this title, 2003. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-436/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Gebauer, Tobias. "Water turnover in species-rich and species-poor deciduous forests xylem sap flow and canopy transpiration /." Göttingen : Georg-August-Universität, 2010. http://webdoc.sub.gwdg.de/diss/2010/gebauer/gebauer.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!