Academic literature on the topic 'Plant competition. Plant communities'

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Journal articles on the topic "Plant competition. Plant communities"

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Mitchley, Jonathan. "Diffuse competition in plant communities." Trends in Ecology & Evolution 2, no. 4 (April 1987): 104–6. http://dx.doi.org/10.1016/0169-5347(87)90168-6.

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Orrock, John L., Marissa L. Baskett, and Robert D. Holt. "Spatial interplay of plant competition and consumer foraging mediate plant coexistence and drive the invasion ratchet." Proceedings of the Royal Society B: Biological Sciences 277, no. 1698 (June 2, 2010): 3307–15. http://dx.doi.org/10.1098/rspb.2010.0738.

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Indirect effects may play an important role in structuring plant communities. Using a spatially explicit model of consumer foraging and plant competition, we demonstrate how the relationship between the spatial area over which plants compete and the spatial scale of consumer behaviour can determine the outcome of competition when one plant species provides a refuge for mobile consumers (i.e. refuge-mediated apparent competition). Once an initial population of the invader is established, complete invasion may be inevitable because of an ever-advancing invasion front ratchets forward driven by a feeding front of mobile consumers. Because the spatial extent of apparent competition determines the area available for colonization, consumers may also dictate the rate at which an invasion occurs. We find that, as long as refuge-mediated apparent competition is sufficiently localized, invasion is possible even in systems characterized by low overall levels of consumer pressure. Moreover, we show that a stable equilibrium can result in which both resident and invading plants coexist, suggesting that spatial heterogeneity created by refuge-mediated apparent competition may be important in mediating coexistence in plant communities. The spatial interplay of consumer behaviour and plant competition may be an underappreciated mechanism affecting the composition, diversity and spatial pattern of plant communities.
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Bengtsson, Jan, Torbjörn Fagerström, and Håkan Rydin. "Competition and coexistence in plant communities." Trends in Ecology & Evolution 9, no. 7 (July 1994): 246–50. http://dx.doi.org/10.1016/0169-5347(94)90289-5.

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Bohn, K., J. G. Dyke, R. Pavlick, B. Reineking, B. Reu, and A. Kleidon. "Linking plant ecophysiology to the dynamics of diverse communities." Biogeosciences Discussions 7, no. 6 (November 9, 2010): 8215–43. http://dx.doi.org/10.5194/bgd-7-8215-2010.

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Abstract. The local climate represents the primary selection pressure acting on vegetation, but competitive interactions between plant strategies determine their composition. We link growth and reproduction characteristics from different plant strategies, that emerge from climatic constraints, to their competitive abilities and calculate explicitly their spatial dynamics. DIVE (Dynamics and Interactions of VEgetation), a simple generic model is built, that calculates population dynamics in the presence of perturbations, seed and resource competition. To understand the impacts of competition and perturbations on the population dynamics, a range of sensitivity experiments are conducted. DIVE simulations feature successional dynamics from fast-growing towards slow-growing plant strategies and as such corresponds to widely observed characteristics of terrestrial vegetation. Perturbations, seed and resource competition were found to affect succession and diversity, with the community composition at steady state ranging from competitive exclusion to coexistence and total extinction. We conclude that linking ecophysiological characteristics of vegetation to competition is a valid approach to determine population dynamics. Furthermore, incorporating mechanisms of perturbations and competition may be essential in order to effectively predict the response of community dynamics to changing environmental conditions.
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Bazzaz, FA, and KDM McConnaughay. "Plant Plant Interactions in Elevated CO2 Environments." Australian Journal of Botany 40, no. 5 (1992): 547. http://dx.doi.org/10.1071/bt9920547.

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Increasing atmospheric carbon dioxide concentrations present a novel resource condition for plant communities. In order to understand and predict how plant community structure and function may be altered in a high CO2world, we need to understand how interactions among neighbouring plants within a community will alter the growth and reproduction of component species. Because CO2 is readily diffusible, plants have little influence on the CO2 acquisition of their neighbours, except within particularly dense canopies. Thus, plants seldom compete directly for CO2. Rather, CO2 availability is likely to alter plant-plant interactions indirectly through its effects on plant growth and competition for other resources. As a consequence, competitive outcome under elevated CO2 atmospheres within even simple systems is not easy to predict. For example, under some conditions, C4 species in competitive assemblages have improved competitive ability relative to C3 competitors as a result of CO2 enrichment, contrary to expectations based on their photosynthetic pathways. It is now clear that individually grown plants can differ substantially from those within mono- or multispecific stands in response to CO2 enrichment. At present, our understanding of how stands of interacting plants modify the availability of CO2 and other resources is incomplete. We urgently need information about how elevated CO2 atmospheres influence stand formation and population dynamics, specifically with regard to the identities, numbers, sizes and reproductive fitnesses of individuals within single and multiple species stands, if we are to make multi-generational predictions concerning the fate of populations and communities in an elevated CO2 world.
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Cole, D. E., J. R. King, D. A. Oyarzun, T. H. Dietzler, and A. S. McClay. "Experiences with invasive plant management and ecology in Alberta." Canadian Journal of Plant Science 87, no. 5 (December 1, 2007): 1013–22. http://dx.doi.org/10.4141/cjps07119.

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A number of invasive plant management strategies, including competition, fertilizer, herbicide, combination of fertilizer and herbicide, biological control, mowing, grazing management, prevention, eradication and education have been investigated and employed in Alberta. The integrated weed management (IWM) strategies are overlapping, interconnected and based on ecological principles. Research on several invasive plant species, including ox-eye daisy (Leucanthemum vulgare Lam.), scentless chamomile [Tripleurospermum perforatum (Mérat) Laínz] and white cockle [Silene pratensis (Raf.) Godr. & Gren.] has provided ecological information showing the importance of maintaining healthy, competitive plant communities. Key words: Invasive plants, management, ox-eye daisy, competition, Alberta
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Gopal, Brij, and Usha Goel. "Competition and allelopathy in aquatic plant communities." Botanical Review 59, no. 3 (July 1993): 155–210. http://dx.doi.org/10.1007/bf02856599.

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Dormann, C. F. "On community matrix theory in experimental plant ecology." Web Ecology 8, no. 1 (November 18, 2008): 108–15. http://dx.doi.org/10.5194/we-8-108-2008.

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Abstract. In multi-species communities the stability of a system is difficult to assess from field observations. This is the case for example for competitive interactions in plant communities. If a mathematical model can be formulated that underlies the processes in the community, a community matrix can be constructed whose elements represent the effects of each species onto every other (and itself) at equilibrium. The most common competition model is the Lotka-Volterra equation set. It contains interspecific competition coefficients to represent the interactions between species. In plant community ecology several attempts have been made to quantify competitive interactions and to assemble a community matrix, so far with limited success. In this paper we discuss a method to use pairwise interaction coefficients from experimental plant communities to analyse feasibility and stability of multi-species sets. The approach is contrasted with that of Wilson and Roxburgh (1992) and is illustrated using data from Roxburgh and Wilson (2000a). Results from Wilson and from this study differ (some times substantially), with our approach being more pessimistic about stability and coexistence in plant communities.
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Gurner, Ryan. "Plant Ecology 2nd Edition." Pacific Conservation Biology 4, no. 2 (1998): 173. http://dx.doi.org/10.1071/pc980173.

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Plant Ecology is the scientific study of the factors influencing the distribution and abundance of plants. This book aims to show how pattern and structure at different levels of plant organization (communities, populations and individuals) are influenced by abiotic factors like climate and soils, and biotic interactions including competition, herbivory and mutualistic relationships. One further aim has been to convey the dynamic nature of modern plant ecology and to highlight the critical Issues.
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BALL, D. A., and M. J. SHAFFER. "Simulating resource competition in multispecies agricultural plant communities." Weed Research 33, no. 4 (August 1993): 299–310. http://dx.doi.org/10.1111/j.1365-3180.1993.tb01945.x.

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Dissertations / Theses on the topic "Plant competition. Plant communities"

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Boughton, Elizabeth Hermanson. "Understanding plant community composition in agricultural wetlands context dependent effects and plant interactions /." Orlando, Fla. : University of Central Florida, 2009. http://purl.fcla.edu/fcla/etd/CFE0002678.

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Ratcliffe, Sophia Emma Thirza. "Competition and coexistence in experimental annual plant communities." Thesis, Imperial College London, 1999. http://hdl.handle.net/10044/1/11515.

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Gaudet, Connie Lee. "Competition in shoreline plant communities: A comparative approach." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6516.

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I tested the general hypothesis that competitive ability is an important determinant of pattern in shoreline plant communities. Specifically I tested four predictions generated from this general hypothesis: (1) the competitive performance of plant species is related to their distribution along natural gradients of fertility and standing crop; (2) the competitive performance of plant species is related to measurable plant traits; (3) the competitive performance of plant species is not significantly affected by changing nutrient supply; and (4) there is an "evolutionary trade-off" between nutrient stress tolerance of species and competitive performance that underlies the distribution of species along natural gradients of fertility and standing crop. These questions were posed at a broad, multi-species scale using comparative measures of competitive performance, stress tolerance, and morphology from over 40 shoreline plant species, and field distribution data from several natural shoreline communities in Ontario, Nova Scotia and Quebec. Results showed that the experimentally determined measure of the relative competitive performance of a species was significantly correlated with its position along natural gradients of fertility and standing crop; and with simple measurable plant traits, in particular above-ground biomass (r$\sb{\rm s}$ = 0.92; p .0001). Results also showed that the competitive performance of species under high and low nutrient conditions was significantly correlated after two growing seasons (r$\sb{\rm s}$ = 0.76; P .001); and that stress tolerance, measured as the relative biomass production of species under low nutrient conditions, was inversely correlated with competitive performance (r = $-$0.62, p .005).
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Heard, Matthew Spencer. "The role of invertebrate herbivory and plant competition in structuring mesic grassland communities." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390618.

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Glimskär, Anders. "Growth strategies, competition and defoliation in five grassland plants /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5465-4.pdf.

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Twolan-Strutt, Lisa. "Competition intensity and its above- and below-ground components in two contrasting wetland plant communities." Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/9921.

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I used a field experiment to measure total competition intensity and its above- and below-ground components in two wetlands that represent extremes in habitat productivity: an infertile sandy shoreline and a fertile bay. Transplants of Lythrum salicaria and Carex crinita were grown with no neighbours, with roots of neighbours only and with all neighbours; their growth rates were used to estimate competition intensity. The experiment was carried out to answer the following main questions: (1) Is there a difference in total, above- and below-ground competition intensity in two wetlands that differ in standing crop? (2) Is there an effect of standing crop on total, above- and below-ground competition intensity when the data from the two wetlands are combined? Both total and above-ground competition intensity were found to be greater in the high standing crop wetland but below-ground competition did not differ between wetlands (CI$\rm\sb{TOTAL}$: p 0.00001, CI$\rm\sb{ABOVE}$: p = 0.0013 CI$\rm\sb{BELOW}$: p = 0.58). Mean total competition increased from 0.16 to 0.43, the above-ground component increased from $-$0.063 to 0.21 and the below-ground component was close to 0.20 in both wetlands. Total and above-ground competition intensity was significantly affected by standing crop in the wetlands studied but below-ground competition intensity was not (CI$\rm\sb{TOTAL}$: p = 0.0001, CI$\rm\sb{ABOVE}$: p = 0.0001, CI$\rm\sb{BELOW}$: p =0.89). The result that competition was predominantly below-ground in the low standing crop wetland supports previous work in agricultural pot experiments (Wilson 1988) and terrestrial field studies (Wilson and Tilman 1991, Putz and Canham 1992, Wilson and Tilman 1993, Wilson in press). The result that root and shoot competition were roughly equal in the high standing crop wetland is not typical of past studies. (Abstract shortened by UMI.)
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Jefferson, Lara Vanessa. "The biology and ecology of species of Maireana and Enchylaena : intra- and inter- specific competition in plant communities in the eastern goldfields of Western Australia /." Curtin University of Technology, School of Chemical and Biological Sciences, 2001. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=14451.

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Members of the family Chenopodiaceae are routinely used as colonizer plant species to rehabilitate waste and tailings materials on mine sites in the Eastern Goldfields of Western Australia. These are specifically selected for their salt and drought tolerance and also because they are representative of the surrounding natural vegetation. Where these have been sown, competition between several species has been observed. The resulting plant community structure is typically lower in species diversity than the initial seed mixture. This study aimed to determine whether competition was occurring between five of the species commonly used and some of the mechanisms that determine community structure on the rehabilitated areas of waste material. Atriplex bunburyana, Atriplex codonocarpa, Maireana brevifolia, Maireana georgei and Enchylaena tomentosa were selected for the study, which was conducted in three parts. Firstly, different plant densities and species combinations were studied in the field and in a pot trial to determine whether or not competition was occurring and to determine the resources that the plants were competing for. The results of the field trial revealed that competition was occurring, but that it formed only one component of the complex interactions between plant species, density and soil characteristics (i.e. pH and salinity). The pot trial complemented the outcome of the field trial. In addition, it showed that competition was occurring, but was even more pronounced. This was most likely due to the lack of nutrients and the limited availability of space in the pots.
In the second part of this study, the ability of each species to survive and grow when subjected to adverse environmental conditions, such as low moisture availability, high salinity and low light availability, was examined in relation to competition. All five species were treated with different water regimes and soil salinity. Salt played an important role, especially for the Atriplex spp. and M. brevifolia, in ensuring survival when moisture availability was low. The effect of shade on the Maireana species and E. tomentosa was also researched after field observations suggested that M georgei was adversely affected when growing within the canopy of A. bunburyana. The pot trial showed that growth of M. georgei was affected by progressively more shade, whereas E. tomentosa was facilitated by shade. Maireana brevifolia exhibited significant tolerance to low light intensity. In the last part of this three-part study, all five chenopods were screened for allelopathy. Allelopathy may play an important role in determining community structure in successive plant generations. All chenopod species produced allelopathic substances, which were isolated from their leaves. The inhibition of seed germination was found to be speciesspecific and occurred only at certain concentrations. The seed of the Atriplex spp. was not affected by M. georgei and E. tomentosa extracts.
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Hall, Lucas Keith. "Competition Dynamics Within Communities of Desert Wildlife at Water Sources." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6402.

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Water is a vital resource for species inhabiting arid and semi-arid regions and can shape the biotic communities that we observe. Because water is considered a limiting resource for many species in desert environments, there is the potential for competitive interactions between species to occur at or around water sources. For this dissertation I tested hypotheses related to resource competition among different species of wildlife in the Great Basin and Mojave Deserts of western Utah. Chapter one evaluated the influence of feral horses (Equus caballus) on patterns of water use by communities of native birds and mammals. Chapter two determined if feral horses competed with pronghorn (Antilocapra americana) and mule deer (Odocoileus hemionus) for access to water. In chapters one and two, we found evidence that horses compete with native wildlife for water. In chapter one, horses were associated with decreased richness and diversity of native species at water sources. Native species also had fewer visits and spent less time at water sources frequented by horses. In chapter two, we found that pronghorn and mule deer used water sources less often where horse activity was high. There were also significant differences in temporal activity for pronghorn, but not mule deer, at horse-occupied sites versus sites where horses were absent or uncommon. Our results indicated that horses spatially and temporally displaced other species at water sources providing evidence of a negative influence on how communities of native wildlife access a limited resource in an arid environment. Chapter three assessed whether dominant carnivores (coyote (Canis latrans) and bobcat (Lynx rufus)) negatively influenced the spatial use of water sources by the subordinate kit fox (Vulpes macrotis). Our results did not reveal strong negative associations between kit fox visits to water sources and visits by dominant carnivores; in fact, dominant carnivores contributed very little to the use of water by kit foxes. Instead, kit fox visits were more closely associated with habitat features at water sources. Our findings indicate that dominant carnivores are not the primary driver of use of water sources by subordinate carnivores. Chapter four evaluated whether a simulated loss of water due to climate change/increased human use would differentially affect desert bats based on flight morphology and maneuverability. When we experimentally reduced surface area of water sources, larger, less-maneuverable bats experienced a 69% decrease in drinking success and increased competition with smaller, maneuverable bats. Anticipated reductions in the sizes of water sources due to climate change may lead to species with less maneuverability being unable to access water efficiently and facing increased competition from more agile bats.
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Knudsen, Carola. "The impact of the invasive Garden lupine (Lupinus polyphyllus) on plant communities along species rich road verges." Thesis, Karlstads universitet, Avdelningen för biologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-82563.

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The Swedish Transport Administration works continuously with biological diversity. The project, “Species-rich road verges”, begun in 1995. A species-rich road verge is a road verge area that houses objects worthy of protection. It is common for a species-rich road verge to contain meadow species but on the other hand, road verges also function as new habitat for invasive species. Invasive species often tend to show faster growth and higher reproductive potential than non-invasive species and are considered to homogenize ecosystems because many native species often have difficulty competing with them. The invasive Garden lupine (Lupinus polyphyllus) can be particularly problematic at species-rich road verges, where it competes with the native flora. The purpose of the study was to investigate whether the presence of L. polyphyllus in species-rich road verges decreases plant diversity and species richness, if it changes the species composition and if it affects the vegetation height. The study also wanted to investigate if the presence of L. polyphyllus in species-rich road verges presence affects the thickness of the litter, the pH-value in the soil and the ecological indicator values. This study was conducted at 12 species rich road verges in Värmland and Örebro counties in Sweden, where vascular plants in a box of 1 m2 were inventoried along the road verges in pairs, each pair containing a plot where L. polyphyllus was present (“lupine plot”) and a plot where L. polyphyllus was absent (“control plot”). At each species-rich road verge as many pairs as the length of the road verge allowed was inventoried. Vegetation height, litter thickness and pH- value were also measured and ecological indicator values was calculated for each plot. The results suggest that the presence of L. polyphyllus decreases species richness and diversity and changes the species composition in species-rich road verges so that it becomes homogenized. Vegetation height was affected when L. polyphyllus was present, even when the species itself was not taken into the calculation. The results of this study indicate that it is important to come up with effective strategies to control and stop the spread of the invasive L. polyphyllus in species-rich road verges.
Trafikverket arbetar kontinuerligt med biologisk mångfald. Projektet Artrika vägkanter började 1995. En artrik vägkant är ett vägkantsområde som hyser skyddsvärda arter. Det är vanligt att en artrik vägkant innehåller ängsarter. Vägkanter fungerar också som en ny livsmiljö för invasiva arter. Invasiva arter tenderar ofta att visa snabbare tillväxt och högre reproduktionspotential än icke-invasiva arter och anses homogenisera ekosystem då de konkurrerar ut många inhemska arter. Den invasiva blomsterlupinen (Lupinus polyphyllus) kan vara särskilt problematisk vid artrika vägkanter där den konkurrerar med den inhemska floran. Syftet med studien var att undersöka om förekomsten av L. polyphyllus i artrika vägkanter minskar växternas artrikedom och diversitet, om artsamman- sättningen förändras, om vegetationshöjden påverkas samt om abiotiska faktorer påverkas. Studien genomfördes vid 12 artrika vägkanter i Värmland och Örebro län i Sverige, där kärlväxter i en ruta på 1 m2 inventerades längs de artrika vägkanterna i par, med en lupinruta kontra en kontrollruta. Vid varje artrik vägkant inventerades så många par som vägkantens längd tillät. Vegetationshöjd, förnans tjocklek och pH-värde mättes också vid varje ruta och ekologiska indikator värden beräknades för varje ruta. Resultaten tyder på att blomsterlupinen minskar artrikedom och mångfald och att artsammansättningen i lupin rutor förändras jämfört med kontroll rutor och blir mer homogen. Vegetationshöjden påverkades av L. polyphyllus och var signifikant högre i lupinrutor jämfört med kontrollrutor även då arten L. polyphyllus inte räknades med i analysen. Resultaten av denna studie indikerar att det är viktigt att arbeta fram effektiva strategier för att kontrollera och stoppa spridningen av den invasiva L. polyphyllus i artrika vägkanter.
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Gruner, Ingrid Gerda. "Comparative Ecology and Conservation of Rare Native Broom, Carmichaelia (Fabaceae), South Island, New Zealand." Thesis, University of Canterbury. School of Forestry, 2003. http://hdl.handle.net/10092/4152.

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Using a comparative approach, the presented study explores the ecology of ten species of native New Zealand broom, Carmichaelia, and their vulnerability to competition and herbivory, with the aim of gaining a better understanding of the significance of introduced species as a threat to rare indigenous plants in New Zealand. In particular, the study focuses on the relationship between characteristics of the Carmichaelia species and their vulnerability, as well as on other factors influencing the significance of introduced species as a threat. To gain a better understanding of the ecology of the Carmichaelia species, their current habitats and associated plant communities were investigated using quantitative-descriptive methods in the field. The effect of competition with introduced plants was studied in two glasshouse experiments, differentiating above ground competition for light from below ground competition for nutrients and water. The experiments focussed on the early life-stage of seedling establishment of the Carmichaelia species. The impact of herbivory by introduced mammals was studied in four field-based exclosure trials, focussing on the effects on survival and reproductive activity of adult Carmichaelia plants. The results showed that the effects of competition and herbivory vary between the different species. Furthermore, they provided a set of species characteristics that can be used as indicators to predict the vulnerability of Carmichaelia to the impact of introduced species. These indicators provide a useful tool for threatened species management, as they allow the identification of the most vulnerable species as well as the most significant threat to each species. Furthermore, the indicators can be used to group species, combining those with similar vulnerability profiles, and therefore, likely similar management needs. However, the example of the Carmichaelia species also illustrated that the use of indicators for the vulnerability of threatened species is limited and needs to be combined with case-by-case studies to verify the actual significance of threats for each population of concern. The vulnerability profiles derived from species’ characteristics can be used to guide such site specific studies, ensuring they focus on the most relevant threat factors. This combination of the understanding of general patterns in the vulnerability of species with targeted species and site-specific studies will lead to increased efficiency in the conservation management of threatened plant species.
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Books on the topic "Plant competition. Plant communities"

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A, Maller Ross, ed. Mathematical ecology of plant species competition: A class of deterministic models for binary mixtures of plant genotypes. Cambridge [England]: Cambridge University Press, 1990.

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Laštůvka, Zdeněk. Koakce a kompetice vyšších rostlin. Praha: Academia, 1986.

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Ėduardovich, Reĭmers Fedor, and Danovich K. N, eds. Fiziologii͡a︡ travi͡a︡nistogo soobshchestva: Print͡s︡ipy konkurent͡s︡ii. Novosibirsk: VO "Nauka", 1994.

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Roland, Marti. Einfluss der Wurzelkonkurrenz auf die Koexistenz von seltenen mit häufigen Pflanzenarten in Trespen-Halbtrockenrasen =: The influence of root competition on the coexistence of sparse and common perennials in two limestone grasslands. Zürich: Geobotanisches Institut der ETH, Stiftung Rübel, 1994.

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Spillards, D. M. Studies of plant competition. Norwich: University of East Anglia, 1989.

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Neuhäusl, R., H. Dierschke, and J. J. Barkman, eds. Chorological phenomena in plant communities. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5508-0.

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Taleb, Mohammed Sghir, and Mohamed Fennane. Vascular Plant Communities of Morocco. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-93704-5.

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Plant strategies and the dynamics and structure of plant communities. Princeton, N.J: Princeton University Press, 1988.

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Håkansson, Siqurd. Growth and competition in plant stands. Uppsala: Dept. of Crop Production Science, Swedish University of Agricultural Science, 1991.

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Atwater, Mary. The Plant kingdom. New York: Macmillan/McGraw-Hill School Pub. Co., 1995.

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Book chapters on the topic "Plant competition. Plant communities"

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Wandrag, Elizabeth M., and Jane A. Catford. "Competition between native and non-native plants." In Plant invasions: the role of biotic interactions, 281–307. Wallingford: CABI, 2020. http://dx.doi.org/10.1079/9781789242171.0281.

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Abstract The introduction of species to new locations leads to novel competitive interactions between resident native and newly-arriving non-native species. The nature of these competitive interactions can influence the suitability of the environment for the survival, reproduction and spread of non-native plant species, and the impact those species have on native plant communities. Indeed, the large literature on competition among plants reflects its importance in shaping the composition of plant communities, including the invasion success of non-native species. While competition and invasion theory have historically developed in parallel, the increasing recognition of the synergism between the two themes has led to new insights into how non-native plant species invade native plant communities, and the impacts they have on those plant communities. This chapter provides an entry point into the aspects of competition theory that can help explain the success, dominance and impacts of invasive species. It focuses on resource competition, which arises wherever the resources necessary for establishment, survival, reproduction and spread are in limited supply. It highlights key hypotheses developed in invasion biology that relate to ideas of competition, outlines biotic and abiotic factors that influence the strength of competition and species' relative competitive abilities, and describes when and how competition between non-native and native plant species can influence invasion outcomes. Understanding the processes that influence the strength of competition between non-native and native plant species is a necessary step towards understanding the causes and consequences of biological invasions.
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da Silva, Fernanda Ribeiro, and Marco Aurélio Pizo. "Restoration of seed dispersal interactions in communities invaded by non-native plants." In Plant invasions: the role of biotic interactions, 391–401. Wallingford: CABI, 2020. http://dx.doi.org/10.1079/9781789242171.0391.

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Abstract Restoration aims to rebuild not only species but also the tangled interactions between species that ensure communities perpetuate by themselves. In tropical forests, restoration of seed dispersal interactions is essential because most plant species depend on animals to spread their seeds. A big challenge in restoring such forests is dealing with invasion by non-native species. Non-native plant species may outcompete and eliminate native species from the community, potentially disrupting or arresting the restoration process. Once established, invasive non-native plants are usually incorporated into the local seed dispersal network, potentially causing loss of biodiversity by competition with native species. This chapter reports on a case study of a 25-year old restored forest invaded by several bird-dispersed plant species. We assessed network metrics at the species level to specifically evaluate the role performed by invasive non-native species in the structure of the bird - seed dispersal network. The removal of invasive non-native plants and the re-establishment of native plant communities should be considered for the restoration of habitats invaded by non-native plants. For this reason, we discuss the impacts of removing such non-native plants and explore the consequences for the structure of the overall network. Because restoration areas are open systems, even after the removal of invasive non-native plant species they can return via seed dispersal. So, both the control and management of invasive non-native species would be more effective if planned with a landscape perspective. We also point out relevant management aspects to avoid the negative influence of invasive non-native plants on the seed dispersal interactions occurring between native plant and bird species in restored tropical forests.
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Heleno, Ruben H. "The effect of non-native plant invasions on the dispersal of native seeds." In Plant invasions: the role of biotic interactions, 256–69. Wallingford: CABI, 2020. http://dx.doi.org/10.1079/9781789242171.0256.

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Abstract Non-native plants change the communities they integrate in multiple ways, including direct and indirect effects on co-occurring native vegetation. While direct effects are more obvious, indirect effects, i.e. those mediated by biotic interactions with other trophic levels, can also have pervasive consequences for long-term community persistence. Seed dispersal is a critical stage during the life cycle of most plants, as it lays the foundations for plant recruitment patterns and long-term vegetation dynamics. By interacting with seed-dispersing animals, primarily frugivorous birds and mammals, plants can positively or negatively affect the dispersal of co-occurring native seeds. In an increasingly invaded world, it is thus critically important to identify general trends on the direction and magnitude of these effects. This chapter reviews the empirical evidence supporting such changes and the potential underlying mechanisms driving them. While the direct impacts of plant invasions are relatively easy to document, indirect effects are much harder to detect. Nevertheless, the most important consequence of the incorporation of new fruiting plants into native communities seems to be a direct competition for the services provided by the local dispersers, negatively affecting native seed dispersal rates. However, another key message emerging from the literature is that responses are highly idiosyncratic, and usually habitat- and species-specific, and therefore resistant to broad generalizations. Fruiting phenology, and in particular the synchrony/asynchrony between the availability of native and non-native fruits, seems to be a particularly important driver of the direction of the responses (i.e. towards facilitation or competition). However, most evidence is still derived from anecdotal observations and formal community level assessments are largely missing. Similarly, how invasive plants change the emergent structure of seed dispersal networks remains uncertain, with early evidence suggesting that novel seed dispersal networks might be structurally very similar to native ones. Bringing together classic experimental designs and new technical and analytical tools to provide broad synthesis will be vital in the near future to clarify the direction, magnitude and generality of these effects.
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Yokozawa, Masayuki. "The Mode of Competition and Spatial Pattern Formation in Plant Communities." In Morphogenesis and Pattern Formation in Biological Systems, 237–46. Tokyo: Springer Japan, 2003. http://dx.doi.org/10.1007/978-4-431-65958-7_20.

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Karley, A., and B. Marshall. "Functional-Structural Modelling as a Potential Tool to Assess the Impact of Resource Competition on Arable Communities." In Functional-Structural Plant Modelling in Crop Production, 231–41. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/1-4020-6034-3_20.

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Traveset, Anna, and David M. Richardson. "Plant invasions: the role of biotic interactions - an overview." In Plant invasions: the role of biotic interactions, 1–25. Wallingford: CABI, 2020. http://dx.doi.org/10.1079/9781789242171.0001.

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Abstract Diverse biotic interactions between non-native plant species and other species from all taxonomic groups are crucial mediators of the dynamics of plant invasions. This chapter reviews the key hypotheses in invasion ecology that invoke biotic interactions to explain aspects of plant invasion dynamics. We examine the historical context of these hypotheses and assess the evidence for accepting or rejecting their predictions. Most hypotheses invoke antagonistic interactions, mainly competition, predation, herbivory interactions and the role of pathogens. Only in the last two decades have positive (facilitative/mutualistic) interactions been explicitly included in invasion biology theory (as in ecological theory in general). Much information has accumulated in testing hypotheses relating to biotic resistance and Enemy Release Theory, although many of the emerging generalizations are still contentious. There is growing consensus that other drivers of plant invasion success, such as propagule pressure and disturbance, mediate the outcome of biotic interactions, thereby complicating our ability to make predictions, but these have rarely been assessed in both native and adventive ranges of non-native invasive species. It is also widely acknowledged that biogeographic comparisons, more than common garden experiments, are needed to shed light on many of the contradictory results. Contrasting findings have also emerged in exploring the roles of positive interactions. Despite strong evidence that such interactions are crucial in many communities, more work is needed to elucidate the factors that influence the relative importance of positive and negative interactions in different ecosystems. Different types of evidence in support of invasional meltdown have emerged for diverse habitats and across spatial scales. In light of increasing evidence that biotic indirect effects are crucial determinants of the structure, dynamics and evolution of ecological communities, both direct and indirect interactions involving native and non-native species must be considered to determine how they shape plant invasion patterns and the ecological impacts of non-native species on recipient communities. Research that examines both biotic interactions and the factors that mediate their strength and alter interaction outcomes is needed to improve our ability to predict the effects of novel interactions between native and non-native species, and to envisage how existing invaded communities will respond to changing environmental conditions. Many opportunities exist for manipulating biotic interactions as part of integrated control strategies to reduce the extent, density and impacts of non-native plant invasions. These include the introduction of species from the native range of the non-native plant for biological control, diverse manipulations of plant - herbivore interactions and many types of interaction to enhance biotic resistance and steer vegetation recovery following non-native plant control.
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Callaway, Ragan M., and Timothy G. Howard. "Competitive Networks, Indirect Interactions, and Allelopathy: A Microbial Viewpoint on Plant Communities." In Progress in Botany, 317–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-36832-8_14.

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Patterson, David T., and Elizabeth P. Flint. "Implications of Increasing Carbon Dioxide and Climate Change for Plant Communities and Competition in Natural and Managed Ecosystems." In Impact of Carbon Dioxide, Trace Gases, and Climate Change on Global Agriculture, 83–110. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2016. http://dx.doi.org/10.2134/asaspecpub53.c7.

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Lack, Andrew, and David Evans. "Plant communities." In Plant Biology, 206–8. 2nd ed. London: Taylor & Francis, 2021. http://dx.doi.org/10.1201/9780203002902-62.

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Bond, William J., and Brian W. van Wilgen. "Fire, competition and the organization of communities." In Fire and Plants, 148–87. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1499-5_7.

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Conference papers on the topic "Plant competition. Plant communities"

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Zhu, Yang. "TERMINAL FLOWER 1 chromatin recruitment, competition with FLOWERING LOCUS T and target genes." In ASPB PLANT BIOLOGY 2020. USA: ASPB, 2020. http://dx.doi.org/10.46678/pb.20.1049088.

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Clore, Amy. "Divergence of Bacterial Endophyte Communities Within Differentiating Tissues of Brassica oleracea var. botrytis L." In ASPB PLANT BIOLOGY 2020. USA: ASPB, 2020. http://dx.doi.org/10.46678/pb.20.171218.

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Kudryavtsev, Alexei Yuvenal'yevich. "ASPECTS OF PLANT COMMUNITIES OF THE VOLGA STEPPE." In ФЕНОЛОГИЯ: СОВРЕМЕННОЕ СОСТОЯНИЕ И ПЕРСПЕКТИВЫ РАЗВИТИЯ. Екатеринбург: Б. и., 2020. http://dx.doi.org/10.26170/kf-2020-05.

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Lazaroiu, George Cristian, Lacramioara Diana Robescu, Virgil Dumbrava, and Mariacristina Roscia. "Optimizing wastewater treatment plant operation in positive energy communities." In 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe). IEEE, 2020. http://dx.doi.org/10.1109/eeeic/icpseurope49358.2020.9160515.

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Damgaard, Christian. "Invited Talk: Modelling Asymmetric Growth in Crowded Plant Communities." In 2009 Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications (PMA). IEEE, 2009. http://dx.doi.org/10.1109/pma.2009.76.

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"A simulation model for exploring the effects of plant-soil feedbacks on the resilience of plant communities." In 22nd International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand (MSSANZ), Inc., 2017. http://dx.doi.org/10.36334/modsim.2017.b3.trevenen.

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Pavuk, Daniel M. "Influences of agroecosystem edge plant communities on insect community structure." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.114946.

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Krylenko, Sergey, and Sergey Krylenko. "CHARACTERISTICS OF THE CLIFF PLANT COMMUNITIES OF THE TUAPKHAT MASSIF." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4316e19929.

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Preservation of biological diversity is necessary for sustainable development and rational use of coastal resources. In this paper structure of the cliff plant communities of the massif Tuapkhat (the Black Sea coast, Russia) are characterized. Flora of this coastal zone combines features of Mediterranean and middle European Russia types. Herbaceous and shrub life-forms and xeromorphous and petrophilous plant associations dominate at the studied area. The main factor determining the species composition of the examined communities is substrate character.
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Krylenko, Sergey, and Sergey Krylenko. "CHARACTERISTICS OF THE CLIFF PLANT COMMUNITIES OF THE TUAPKHAT MASSIF." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b947c2491c5.29725059.

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Preservation of biological diversity is necessary for sustainable development and rational use of coastal resources. In this paper structure of the cliff plant communities of the massif Tuapkhat (the Black Sea coast, Russia) are characterized. Flora of this coastal zone combines features of Mediterranean and middle European Russia types. Herbaceous and shrub life-forms and xeromorphous and petrophilous plant associations dominate at the studied area. The main factor determining the species composition of the examined communities is substrate character.
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Ivanova, N. S., and S. Z. Borisova. "Plant communities of the Middle Lena in need of protection." In Problems of studying the vegetation cover of Siberia. TSU Press, 2020. http://dx.doi.org/10.17223/978-5-94621-927-3-2020-14.

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The results of the study of rare communities in the middle reaches of the Lena river valley, one of the most floristically rich regions of Yakutia, are presented. There are grow populations of 81 species of vascular plants listed in the regional Red Book. Populations of 35 species are covered by various types of protection. Five populations of endemic plants of the North-East of Russia, 13 species living on the northern limit of their ranges, and 3 endemic plants of the Central Yakutia were not included in protected areas (PAs). The relict steppe communities with Artemisia martjanovii Krasch. ex Poljak., Krascheninnikovia ceratoides (L.) Gueldenst., Hedysarum gmelinii Ledeb., Astragalus lenensis Shemetova, Schaulo et Lomon. are under threat of complete extinction.
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Reports on the topic "Plant competition. Plant communities"

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Edlund, S. A. The distribution of plant communities on Melville Island, Arctic Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/194026.

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Fredrickson, Herbert, John Furey, David Price, Chris Foote, and Margaret Richmond. Root Zone Microbial Communities and Restoration of Plant Communities in Owens Valley, California - Phase 1. Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada472131.

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Milchunas, Daniel G. Responses of plant communities to grazing in the southwestern United States. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2006. http://dx.doi.org/10.2737/rmrs-gtr-169.

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Isbell, Forest I., and Brian J. Wilsey. Quantifying Species Interactions in Experimental Native vs. Exotic Grassland Plant Communities. Ames: Iowa State University, Digital Repository, 2010. http://dx.doi.org/10.31274/farmprogressreports-180814-106.

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Trame, Ann-Marie, and Mary Harper. Potential Military Effects on Selected Plant Communities in the Southeastern United States. Fort Belvoir, VA: Defense Technical Information Center, July 1997. http://dx.doi.org/10.21236/ada329276.

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Rentch, James S., and James Thomas Anderson. A Floristic quality index for West Virginian wetland and riparian plant communities. West Virginia University Agricultural Experiment Station, January 2006. http://dx.doi.org/10.33915/agnic.621.

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Rentch, James S., and James Thomas Anderson. A Floristic quality index for West Virginian wetland and riparian plant communities. West Virginia University Agricultural Experiment Station, January 2006. http://dx.doi.org/10.33915/agnic.730.

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Emrick, Verl, and Alison Hill. Classification of Great Basin Plant Communities Occurring on Dugway Proving Ground, Utah. Fort Belvoir, VA: Defense Technical Information Center, March 1999. http://dx.doi.org/10.21236/ada360939.

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Arts, G. H. P., S. M. Hennekens, P. J. F. M. Verweij, and M. van Eupen. Predicting Plant Communities in the vicinity of agricultural fields/vineyards in Europe to inform non-target terrestrial plant risk assessment. Wageningen: Wageningen Environmental Research, 2021. http://dx.doi.org/10.18174/549894.

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Schultz, B. W., and W. K. Ostler. The effect of drought on four plant communities in the northern Mojave Desert. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/60829.

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