Academic literature on the topic 'Plant succession'

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Journal articles on the topic "Plant succession"

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Gibson, C. W. D., and V. K. Brown. "Plant succession." Progress in Physical Geography: Earth and Environment 9, no. 4 (December 1985): 473–93. http://dx.doi.org/10.1177/030913338500900401.

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Baniya, Chitra Bahadur. "Response of plant species to abandonment of subalpine fields, Manang, Nepal." Botanica Orientalis: Journal of Plant Science 8 (March 2, 2012): 10–15. http://dx.doi.org/10.3126/botor.v8i0.5553.

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Spatial dimension of abandoned fields has been expanding more in rural subalpine zones of Nepal leading to various patterns of secondary succession. The secondary succession in the subalpine Himalayas has not yet been evaluated. Here, I describe a study initiated in Manang district, Central Nepal where enough abandoned fields of different chronosequences were located. A definitive successional pattern was predicted from the data obtained from sampling 256 plots of 1 × 1 m2 each systematically in a total of 43 abandoned fields from 1 to 55 years after abandonment. Change in composition pattern of 11 most important plant species was analyzed through the Detrended Correspondence Analysis (DCA). The first two axes of DCA explained 19.1 % of the total variation in the species composition. Early, mid and late successions were three stages distinguished each by their abundance scores and life-forms composition. Malva neglecta, Phleum alpinum and Fagopyrum esculentum were dominant at the recently abandoned fields. Cynoglossum zeylanicum, Malaxis muscifera, Medicago falcata and Pennisetum flaccidum were mid succession species, and Thymus linearis, Tanacetum gossypinum, Pinus wallichiana and Poa annua represented the late succession species.doi: http://dx.doi.org/10.3126/botor.v8i0.5553 Botanica Orientalis – Journal of Plant Science (2011) 8: 10-15
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Hu, Xuan, Qi Shu, Zean Shang, Wen Guo, and Lianghua Qi. "Secondary Succession in the Tropical Lowland Rainforest Reduced the Stochasticity of Soil Bacterial Communities through the Stability of Plant Communities." Forests 13, no. 2 (February 18, 2022): 348. http://dx.doi.org/10.3390/f13020348.

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The effects of natural succession on plant and soil bacterial communities were previously established, but changes in plant and soil bacterial communities and their response to soil properties are not well characterized in different stages of secondary forest succession, especially in tropical regions with endemic plant species. We investigated the dynamics of plant communities, soil properties and the structure of soil bacterial communities at sites representing 33 (early successional stage), 60 (early-mid successional stage) and 73 (mid successional stage) years of secondary succession in the tropical lowland rainforest of Hainan, China, by using16S rRNA high-throughput sequencing. From the perspective of plant composition, the number of families, genera and species were increasing along with the progress of succession. Additionally, the changes in the ranking of important values along with the progress of the forest succession were consistent with the niche width calculated by the previous stage of the plant community. The results of niche overlap, Pearson’s correlation and Spearman’s rank correlation coefficients and significance indicated that in the early stage of succession, tree species did not fully utilize environmental resources. Then, as time went by, the number of negative correlations of plants in the early-mid stage was more than that in the mid stage of succession. Significant differences were found in the species richness of soil microorganisms among the three successional stages. Nutrient contents in early successional stage rainforests were less abundant than in early-mid and mid forest soils. The influence of soil nutrient concentration, particularly N and P content, on soil bacterial composition at the phylum level was larger in the early-mid stage than in the mid stage. The stochasticity of the soil bacterial community at the early successional stage of the rainforest was significantly higher than that at mid stage. Overall, as the diversity of plant communities increased, the competition decreased, the soil nutrient content changed and the stochasticity of soil bacterial communities decreased as a result of forest succession.
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Myster, Randall W., and Lawrence R. Walker. "Plant successional pathways on Puerto Rican landslides." Journal of Tropical Ecology 13, no. 2 (March 1997): 165–73. http://dx.doi.org/10.1017/s0266467400010397.

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ABSTRACTTo study regeneration on landslides, we counted the number of woody stems at least 1 m tall in 2 m × 5 m permanent plots on Puerto Rican landslides for 5 y and generated successional pathways for all plots in 16 different landslides using principal components analysis (PCA). PCA separated plots well, with early successional plant species (Cecropia schreberiana, Schefflera morolotoni, Alchornea latifolia, Gonzalagunia spicata) positively associated with axes I and II, and the negative portion of axis II associated with a mix of those species and mid-successional species (Inga vera, Piper glabrescens). Pathways generally showed (1) a positive association with axis I in early succession, (2) a negative association with both I and II later in succession, (3) little evidence of a decrease in the rate of succession, and (4) a lack of convergence of pathways over the 5 y of our study.
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Ai, Zemin, Jiayi Li, Xinghua Li, Jiaoyang Zhang, Hongfei Liu, Hongwei Xu, Guobin Liu, and Sha Xue. "Plant Traits Variably Respond to Plant–Soil Interactions during Secondary Succession on the Loess Plateau." Forests 14, no. 4 (April 1, 2023): 726. http://dx.doi.org/10.3390/f14040726.

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Knowledge of plant photosynthesis, biomass, and stress resistance could contribute to exploring the growth and restoration of vegetation. However, the response of these plant traits to plant–soil interactions at different successional stages remains poorly understood, which limits the understanding of secondary succession. A greenhouse experiment was designed to test the effects of rhizosphere soils collected from early- (EarlySoil), mid- (MidSoil), and late-successional (LateSoil) plant communities on plant traits of early-, mid-, and late-successional species (EarlySp, MidSp, and LateSp, respectively). We found that plant traits reacted in a specific direction to plant–soil interactions at different successional stages. Specifically, compared with treatments of plants growing in their own soil, the net photosynthetic rate and single-photon avalanche diode significantly increased in LateSp–EarlySoil (treatment of plants growing in soil) (20%–31%) and LateSp–MidSoil (10%–18%); the maximum quantum efficiency of photosystem II increased in MidSp–EarlySoil (1%) and LateSp–MidSoil (4%); belowground soluble sugar concentrations decreased in LateSp–EarlySoil (33%) and LateSp–MidSoil (45%); leaf, stem, and root biomass increased in MidSp–EarlySoil (76%–123%), LateSp–EarlySoil (180%–342%), and LateSp–MidSoil (83%–137%), and in turn they decreased in EarlySp–MidSoil (40%–73%) and EarlySp–LateSoil (53%–67%). The results indicated that soil conditioned by pre-successional species (early- or mid-successional species) would be conducive to plant functional traits of subsequent successional species (mid- or late-successional species). Constrained redundancy analysis and path analysis suggested that water-soluble ammonium N, total N, and available N concentrations were key soil factors affecting early-, mid-, and late-successional species, respectively. Our findings confirm the directionality of succession and provide new information for plant population dynamics during secondary succession.
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Chen, Meirong, Jiazhi Yang, Chunquan Xue, Tieyao Tu, Zhiyao Su, Hanhua Feng, Miaomiao Shi, Gui Zeng, Dianxiang Zhang, and Xin Qian. "Community composition of phytopathogenic fungi significantly influences ectomycorrhizal fungal communities during subtropical forest succession." Applied Microbiology and Biotechnology 108, no. 1 (January 10, 2024): 1–13. http://dx.doi.org/10.1007/s00253-023-12992-5.

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Abstract Ectomycorrhizal fungi (EMF) can form symbiotic relationships with plants, aiding in plant growth by providing access to nutrients and defense against phytopathogenic fungi. In this context, factors such as plant assemblages and soil properties can impact the interaction between EMF and phytopathogenic fungi in forest soil. However, there is little understanding of how these fungal interactions evolve as forests move through succession stages. In this study, we used high-throughput sequencing to investigate fungal communities in young, intermediate, and old subtropical forests. At the genus level, EMF communities were dominated by Sebacina, Russula, and Lactarius, while Mycena was the most abundant genus in pathogenic fungal communities. The relative abundances of EMF and phytopathogenic fungi in different stages showed no significant difference with the regulation of different factors. We discovered that interactions between phytopathogenic fungi and EMF maintained a dynamic balance under the influence of the differences in soil quality attributed to each forest successional stage. The community composition of phytopathogenic fungi is one of the strong drivers in shaping EMF communities over successions. In addition, the EMF diversity was significantly related to plant diversity, and these relationships varied among successional stages. Despite the regulation of various factors, the positive relationship between the diversity of phytopathogenic fungi and EMF remained unchanged. However, there is no significant difference in the ratio of the abundance of EMF and phytopathogenic fungi over the course of successions. These results will advance our understanding of the biodiversity–ecosystem functioning during forest succession. Key points •Community composition of both EMF and phytopathogenic fungi changed significantly over forest succession. •Phytopathogenic fungi is a key driver in shaping EMF community. •The effect of plant Shannon’s diversity on EMF communities changed during the forest aging process.
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Hu, Xuan, Qi Shu, Wen Guo, Zean Shang, and Lianghua Qi. "Secondary Succession Altered the Diversity and Co-Occurrence Networks of the Soil Bacterial Communities in Tropical Lowland Rainforests." Plants 11, no. 10 (May 19, 2022): 1344. http://dx.doi.org/10.3390/plants11101344.

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The characteristics of plant and soil bacterial communities in forest ecosystems have been reported, but our understanding of the relationship between plant communities and soil bacteria in different stages of secondary tropical rainforest succession is still poor. In June 2018, three different natural successional stages of tropical lowland rainforests, early (33 years), early-mid (60 years), and mid successional stage (73 years), in Hainan Island, China, were selected for this study. By conducting field investigation and 16S rRNA gene high-throughput sequencing, the composition and diversity of tree communities, the niche overlap of tree species with legumes among tree species, and the diversity and composition of soil bacterial communities and co-occurrence networks within communities across the successional stages were investigated. The results showed that plant richness and species diversity increased significantly during the secondary succession of tropical lowland rainforests. The order of positive correlations between nitrogen-fixing legumes and other species in plant communities was early-mid > mid > early successional stage. Soil nutrient content and soil bacterial richness were highest in the early-mid stages of succession, followed by mid and early stages of succession. Organic matter (OM), total nitrogen (TN), alkali nitrogen (AN), and available phosphorus (AP) had a stronger positive impact on soil bacterial communities. Co-occurrence network analysis showed that with the advancement of rainforests succession, the negative correlation between soil bacterial species decreased, and the community stability increased. Overall, as a result of tropical lowland rainforest secondary natural succession, the richness and diversity of plant communities increased, which altered the living conditions of nitrogen-fixing legumes and the soil properties, and the network complexity of soil bacterial communities increased with the rising of rainforest soil nutrient content.
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Rui, Junpeng, Jingjing Peng, and Yahai Lu. "Succession of Bacterial Populations during Plant Residue Decomposition in Rice Field Soil." Applied and Environmental Microbiology 75, no. 14 (May 22, 2009): 4879–86. http://dx.doi.org/10.1128/aem.00702-09.

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ABSTRACT The incorporation of rice residues into paddy fields strongly enhances methane production and emissions. Although the decomposition processes of plant residues in rice field soil has been documented, the structure and dynamics of the microbial communities involved are poorly understood. The purpose of the present study was to determine the dynamics of short-chain fatty acids and the structure of bacterial communities during residue decomposition in a rice field soil. The soil was anaerobically incubated with the incorporation of rice root or straw residues for 90 days at three temperatures (15, 30, and 45°C). The dynamics of fatty acid intermediates showed an initial cumulative phase followed by a rapid consumption phase and a low-concentration quasi-steady state. Correspondingly, the bacterial populations displayed distinct successions during residue decomposition. Temperature showed a strong effect on the dynamics of bacterial populations. Members of Clostridium (clusters I and III) were most dominant in the incubations, particularly in the early successions. Bacteroidetes and Chlorobi were abundant in the later successions at 15 and 30°C, while Acidobacteria were selected at 45°C. We suggest that the early successional groups are responsible for the decomposition of the easily degradable fraction of residues, while the late successional groups become more important in decomposing the less-degradable or resistant fraction of plant residues. The bacterial succession probably is related to resource availability during residue decomposition. The fast-growing organisms are favored at the beginning, while the slow-growing bacteria are better adapted in the later stages, when substrate availability is limiting.
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Reader, R. J. "Potential effects of granivores on old field succession." Canadian Journal of Botany 75, no. 12 (December 1, 1997): 2224–27. http://dx.doi.org/10.1139/b97-932.

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The author of a literature review tentatively concluded that preferential predation on large seeds of late sueccssional species retards plant succession. To test this tentative conclusion for old fields, I determined whether seed predators (i.e., granivores) removed more seeds of later successional species (trees) than earlier successional species (herbs). Seeds of three herbs (Hypericum perforatum L., Centaurea nigra L., Tragopogon dubius Scop.) and three trees (Betula papyrifera Marshall, Fraxinus americana L.. Acer saccharum Marshall) were glued to the ends of fish lines and exposed to granivory for 10 months in each of four old fields. More tree seeds of all sizes (0.53–75.9 mg) disappeared than did seeds of the herb with the smallest seeds (0.11 mg). This result indicates that granivory may indeed retard old field succession. However, about equal numbers of seeds disappeared for the two herbs with larger seeds (2.3–11.6 mg) and two trees with even larger seeds (34.1–75.9 mg). Therefore, granivory may not affect old field succession when both early and later successional species have seeds larger than some critical minimum size. Fewer seeds of the tree with the smallest seeds (0.53 mg) disappeared than did seeds of the two herbs with larger seeds (2.3–11.6 mg). This result implies that granivores have the potential to hasten old field succession for trees with small seeds. Collectively, results of this study suggest that there is more than just one potential effect of granivores on old field succession. Key words: seed predation, seed size, succession, old field.
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Falińska, Krystyna. "Plant population processes in the course of forest succession in abandoned meadows. II. Demography of succession promotors." Acta Societatis Botanicorum Poloniae 58, no. 3 (2014): 467–91. http://dx.doi.org/10.5586/asbp.1989.037.

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The studies on populations in the course of forest succession in abandoned meadows (15 ha) were conducted for 15 years (1974-1988). It was found that the population size of species which took part in the successional process either changed directionally, i.e. developmental phases of populations conformed to the succession stages, or fluctuated, when no direct relationship between both was determined. Three types of population dynamics were distinguished: 1) developmental cycle (increase, decrease and equilibrium in population size) lasted as long as forest comeback; 2) developmental cycle accompanied one successional phase; 3) species appeared in cycles, as a series of populations in the course of long-term succession. Following species groups were distinguished regarding their role in the vegetation transformation in unmown meadows: 1) long-term promotors, present throughout succession and affecting both, changes in meadow vegetation, and initiation of tall-herb and brushwood communities; 2) short-term promotors, present in the first successional phases, especially at the stage of transformation of meadow phytocoenoses; 3) stenoecious promotors, confined to various depressions, periodically or permanently overlogged. All succession promotors were characterized by: high fecundity, ability to form polycormones and clones, strong and long-lived underground organs, modification of lifecycles, dual reproductive mode.
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Dissertations / Theses on the topic "Plant succession"

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Dawkins, Glenys Heather Mary. "Plant pathogens and ecological succession." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/8317.

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Edwards-Jones, Gareth. "Insect herbivore load and plant succession." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47046.

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Horton, Lindsey. "Intervention in succession a method for applying succession theory in landscape design with a focus on vegetation succession in western Washington /." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Thesis/Spring2005/L%5FHorton%5F042805.pdf.

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Kahmen, Stefanie. "Plant trait responses to grassland management and succession." kostenfrei, 2004. http://www.opus-bayern.de/uni-regensburg/volltexte/2004/324/.

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Harper, Leah Wheelbarger. "Plant Biodiversity across Three Successional Stages in Forests of Southern Illinois." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/theses/2794.

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Since the time of European settlement, land-use history, management practices, the introduction of non-native invasive species (NNIS), and climate change have dramatically changed the successional pathways of Southern Illinois forests. Biodiversity is considered essential for ecosystem health and resiliency, so understanding the impact theses forest changes have on biodiversity is necessary to guide future management decisions. This study was conducted at Touch of Nature Environmental Center (TONEC) in Southern Illinois using the Shannon diversity index (H') to compare the levels of biodiversity in the overstory, shrub, seedling, and herbaceous layers across early, mid, and mature successional stages. Twenty plots were randomly placed within early, mid, and mature forest successional stages for a total of 60 plots. Four circular nested vegetation plots were recorded at each plot location. In the overstory plots (area 314.16 m2), woody stems above 6.5 cm diameter at breast height (dbh), age class, and crown were all recorded. In the shrub layer (area 28.27 m2), all woody stems between 2.5 and 6.5 cm dbh were recorded, while in the seedling layer (area 3.14 m2), all woody stems < 1 cm dbh were recorded. In the herbaceous layer, (area 1 m2) species were measured by percent cover. Shannon diversity index (H') was calculated for each plot. When vegetation layers were combined and mean H' within forest successional stages were compared, no differences were found. However, when successional stages were combined within each vegetation layer, the shrub layer had the least H' increasing to seedling, increasing again to overstory and herbaceous; these being equal. When breaking down the vegetation layers separately and comparing H' across successional stages within each, both the overstory and shrub layers had no difference. Early successional was the least diverse in seedling, rising to mid and mature, which were equal. The herbaceous layer showed an opposite trend with early having the highest H' decreasing to mid and decreasing again to mature. Finally looking at the differences across vegetation layers within early, mid, and mature successional stages. Early-successional had the most variability with the highest H' in herbaceous; this decreased progressively to overstory then to shrub and seedling, which were equal. In mid-successional plots, overstory, seedling, and herbaceous layers were equal with H' decreasing in shrub. In mature plots, all vegetation layers had the same H'. Across all vegetation layers, the highest percentage of NNIS was in early-successional, followed by mid, with notably less found in mature forest. Even in instances where H' values were the same, species composition across forest successional stages were quite different. While overall biodiversity is the same across successional stages, differences in H' can be seen when looking at the vegetation layers. Management should focus on removing NNIS in the early and mid-successional forests paying particular attention to the shrub layer, which has the overall lowest H' with the most dramatic differences in composition and the presence of NNIS across all successional stages. Also of concern is the low H' in the seedling layer in early-successional forest, which reduces the likelihood of successful regeneration of these hardwood stands in the future.
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Wood, David M. "Pattern and process in primary succession in high elevation habitats on Mount St. Helens /." Thesis, Connect to this title online; UW restricted, 1987. http://hdl.handle.net/1773/5234.

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Piotrowski, Jeffrey Scott. "Succession of arbuscular mycorrhizal fungi causes, consequences, and considerations /." CONNECT TO THIS TITLE ONLINE, 2007. http://etd.lib.umt.edu/theses/available/etd-05272008-134138/.

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McManus, Erin Michael. "Primary succession of lianas in an Amazonian floodplain forest /." Electronic thesis, 2003. http://etd.wfu.edu/theses/available/etd-11292003-151813/.

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Sugita, Shinya. "Palynological records of forest disturbance and development in the Mountain Meadows watershed, Mt. Rainier, Washington /." Thesis, Connect to this title online; UW restricted, 1990. http://hdl.handle.net/1773/5130.

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Dahlgren, Johan Petter. "Linking plant population dynamics to the local environment and forest succession." Doctoral thesis, Stockholms universitet, Botaniska institutionen, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8291.

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Linking environmental variation to population dynamics is necessary to understand and predict how the environment influences species abundances and distributions. I used demographic, environmental and trait data of forest herbs to study effects of spatial variation in environmental factors on populations as well as environmental change in terms of effects of forest succession on field layer plants. The results show that abundances of field layer species during forest succession are correlated with their functional traits; species with high specific leaf area increased more in abundance. I also found that soil nutrients affect vegetative and flowering phenology of the forest herb Actaea spicata. The effect of nutrients shows that a wider range of environmental factors than usually assumed can influence plant phenology. Moreover, local environmental factors affected also the demography of A. spicata through effects on vital rates. An abiotic factor, soil potassium affecting individual growth rate, was more important for population growth rate than seed predation, the most conspicuous biotic interaction in this system. Density independent changes in soil potassium during forest succession, and to a lesser extent plant population size dependent seed predation, were predicted to alter population growth rate, and thereby the abundance, of A. spicata over time. Because these environmental factors had effects on population projections, they can potentially influence the occupancy pattern of this species along successional gradients. I conclude that including deterministic, as opposed to stochastic, environmental change in demographic models enables assessments of the effects of processes such as succession, altered land-use, and climate change on population dynamics. Models explicitly incorporating environmental factors are useful for studying population dynamics in a realistic context, and to guide management of threatened species in changing environments.
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Books on the topic "Plant succession"

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Falińska, Krystyna. Plant demography in vegetation succession. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3266-4.

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C, Glenn-Lewin David, Peet R. K, and Veblen Thomas T. 1947-, eds. Plant succession: Theory and prediction. London: Chapman & Hall, 1992.

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Falińska, Krystyna. Plant demography in vegetation succession. Dordrecht: Kluwer Academic Publishers, 1991.

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Reed, Willow. Succession: From field to forest. Hillside, N.J., U.S.A: Enslow Publishers, 1991.

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Reed, Willow. Succession: From field to forest. Hillside, N.J., U.S.A: Enslow Publishers, 1991.

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Michael, Runge, ed. Heath succession. Göttingen: E. Goltze, 1993.

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Klein, Donald A. Microbial succession as it relates to plant succession on mine sites. S.l: s.n, 1993.

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Barabasz-Krasny, Beata. Sukcesja roslinnosci na akach, pastwiskach i nieuzytkach porolnych Pogórza Przemyskiego =: The succesion [sic] of vegetation on the meadows, pastures and barren agricultural areas in the Przemysl Foothilis (south-eastern Poland). Kraków: Instytut Botaniki im. W. Szaflera, Polska Akademia Nauk, 2002.

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Krauss, Pamela. Old field succession in Everglades National Park. Homestead, Fla: National Park Service, South Florida Research Center, Everglades National Park, 1987.

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Klinger, Lee Francis. Global patterns in community succession. Bronx, N.Y: New York Botanical Garden, 1990.

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Book chapters on the topic "Plant succession"

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Delcourt, Hazel R., and Paul A. Delcourt. "Plant succession." In Quaternary Ecology, 61–92. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3104-9_3.

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Benedetti-Cecchi, Lisandro. "Plant Succession in Littoral Habitats." In Modern Trends in Applied Aquatic Ecology, 97–131. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0221-0_5.

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Brown, Valerie K. "Insect Herbivores, Herbivory and Plant Succession." In Insect Life Cycles, 183–96. London: Springer London, 1990. http://dx.doi.org/10.1007/978-1-4471-3464-0_13.

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Brown, Valerie K. "Life Cycle Strategies and Plant Succession." In Proceedings in Life Sciences, 105–24. New York, NY: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-8666-7_7.

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Resco de Dios, Víctor. "Forest Succession, Alternative States, and Fire-Vegetation Feedbacks." In Plant-Fire Interactions, 133–53. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-41192-3_8.

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Bryant, J. P., and F. S. Chapin. "Browsing-Woody Plant Interactions During Boreal Forest Plant Succession." In Ecological Studies, 213–25. New York, NY: Springer New York, 1986. http://dx.doi.org/10.1007/978-1-4612-4902-3_15.

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Falińska, Krystyna. "Recapitulation: Succession as a Plant-by-Plant Replacement Process." In Tasks for vegetation science, 81–84. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3266-4_10.

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Allen, M. F., J. N. Klironomos, and S. Harney. "The Epidemiology of Mycorrhizal Fungal Infection During Succession." In Plant Relationships Part B, 169–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60647-2_11.

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Iordache, Virgil. "On the Possibility of Accelerating Succession by Manipulating Soil Microorganisms." In Plant Microbiome Paradigm, 191–230. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50395-6_11.

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Luken, James O. "Management of Plant Invasions: Implicating Ecological Succession." In Springer Series on Environmental Management, 133–44. New York, NY: Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-1926-2_12.

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Conference papers on the topic "Plant succession"

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Shankar, Nachiket. "Tracking rhizosphere microbial community succession across a multi-generation ecosystem selection experiment in Arabidopsis thaliana Cvi and Ler." In ASPB PLANT BIOLOGY 2020. USA: ASPB, 2020. http://dx.doi.org/10.46678/pb.20.1048263.

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Margerum, Alana, Raquel Portes, Diogo Spinola, David V. D`Amore, and Yakun Zhang. "PLANT SUCCESSION AND SOIL CHEMICAL WEATHERING ON POST-GLACIAL LANDSCAPES, SE ALASKA." In Joint 72nd Annual Southeastern/ 58th Annual Northeastern Section Meeting - 2023. Geological Society of America, 2023. http://dx.doi.org/10.1130/abs/2023se-385520.

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Banaszek, Jarosław, Marzena Leksy, and Oimahmad Rahmonov. "The Role of Spontaneous Succession in Reclamation of Mining Waste Tip in Area of Ruda Slaska City." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.098.

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Coal exploitation has produced a huge amount of mining waste whose considerable part is being piled on the waste dumps. The analysis was carried out in the area of Ruda Slaska city. The waste dumps are located within the city limits. The spontaneous processes of succession can thus help to manage such urban landscapes in compliance with the principles of sustainable development. The majority of such territories are managed and restored. However, some areas avoid reclamation processes and instead undergo the process of spontaneous vegetation or even landscape succession. The aim of the research is first and foremost to characterize the spontaneous succession of vegetation in terms of habitat requirements to which we include light, temperature, humidity, trophic conditions, reaction (pH), granulometric composition and plant life forms. In the second place the aim was to determine the direction of the spontaneous succession of vegetation as well as to demonstrate the usefulness of such types of research while planning the reclamation of the post-mining areas that have been deformed to suit the urban landscape. The result of the analysis showed the occurrence of 108 vascular plants in I and 60 in II waste dump. It was mostly photophilous species that prevailed on both waste dumps. They were mostly native as well as non-native species. Some species like Calamagrosits epigejos, Robinia pseudoacacia, Betula pendula have high biological productivity despite unfavorable conditions. The overgrown dumps shaped the image of the city landscape in a specific way. However, the investigation showed that the number of species on the waste dumps increases with time. The results of the research into the conditions that reign on the dumping grounds provide the basis for projects of reclaiming the post-mining sites, in particular the waste dumps, from raw material extraction, as well as demonstrate the usefulness of the spontaneous succession of plants.
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"Development and Evaluation of the ‘Pocket Plant Guide’ to Support the Observation and Identification of Indicator Plants for Vegetation Succession." In 5th International Conference on Computer Supported Education. SciTePress - Science and and Technology Publications, 2013. http://dx.doi.org/10.5220/0004409306750679.

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DUBROVSKIS, Edgars, Aigars INDRIKSONS, Olga MIEZĪTE, and Lelde HERMANE. "SUCCESSION OF GROUND COVER VEGETATION IN HYLOCOMIOSA FOREST SITE TYPE AFTER THE CLEARCUT." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.110.

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Nowadays forestry sector uses forest site type descriptions developed from beginning of 20th century till 1980’s and descriptions are obtained for pre-mature and mature stand age. There is less information about ground cover vegetation for full rotation cycle. In this research has been gathered information about ground cover vegetation succession in first 5 years after clear cut in mature Scots pine stand. The chronosequence method was used. The Brown-Blanquet and the point-square methods for accounting of ground cover plants were used. The ecological values of Ellenberg for describing the environmental status and the coefficient of Tschekanovsky for estimation of the difference between plant communities in forest young growths of different age were used. The biological diversity of species in this research compared to mature stand also is increasing. Ellenberg’s ecological indicator values as light and nitrogen are also increasing: nitrogen value has increased the most - by 2.62 units. There are registered changes in vascular plants, mosses, lichens and trees projective covering’s proportion. The most significant changes in individual species occurrence are between the second and third year's (Tschekanovsky coefficient = 0.19). Five years after clear cut the Tschekanovsky coefficient between the mature stand and five years old clearing is 0.18. In the 4th and 5th year after the clear cut there increase the projective cover of Monocotyledonae plants (families Graminaea and Cyperaceae) forming higher vertical structure and overtaking the dominance from another groups. The results obtained in this research promote further research in different stand age.
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Barnekov, Ulf, Matthias Bauroth, and Michael Paul. "Decontamination and Decommissioning of the Uranium Mill and Processing Plant at Seelingstaedt, Germany." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7380.

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In Eastern Germany uranium mining lasted from 1946 till 1990 including a production of in total 220,000 t of uranium. The Seelingsta¨dt Uranium Mill and Processing Plant, located in Thuringia, Germany, was one of two large uranium mills owned by Wismut. The mill was erected by 1960 and covered an area of 93 ha. From 1961 till 1991 a total of about 110 million t of different types of uranium ores were milled and processed at the Seelingsta¨dt mill. The mill produced ca. 110,000 t of uranium (in yellow cake). Demolition of the buildings and industrial facilities of the Seelingsta¨dt mill and processing plant site are nearly completed. The site is being decommissioned with respect to after-use aiming at afforestation and grasslands allowing for a stable plant succession. Decommissioning includes excavation and relocation of contaminated materials, reshaping of the site and construction of ditches for granting a stable surface runoff as well construction of access and maintenance roads. About 85% of the demolition and relocation works have been completed till to date. Last decommissioning works shall be completed by 2015. The present paper presents experiences made and progress achieved till to date.
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Han, Jianchun, Yan Zhou, Hui Li, and Qiliang Mei. "The Activation Sources of Reactor Internals During Decommissioning." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66430.

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As China’s first nuclear power plant connected to the grid, the first Qinshan nuclear power plant is approaching the decommissioning period. Other nuclear power plants also turn into the preparation phase of decommissioning in succession. In order to facilitate decommissioning, source survey is conducted during the pre-decommissioning phase, which can provide radioactive inventory, contamination distribution, species and quantities of nuclides. The internals of the reactor work under the most severe radiation environment. During the reactor operation, the materials of internals are irradiated by high-energy neutrons. So activated nuclides are generated due to the neutron capture reaction, which are the main radioactive waste to be treated during decommissioning. In this paper, the neutron irradiation and the generated activation source of the internals for pressurized water reactors (PWR) are studied and analyzed. Firstly, core modeling was carried out, and the neutron transport calculation is performed to obtain three-dimensional distribution of the neutron flux. Secondly, according to the three-dimensional distribution of the material composition and the neutron flux rate of the reactor, the activation calculation is carried out to obtain the activation source.
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Lucero, Keylen, John Bjornton, Dominick Cruz, Esmeralda Cruz, Melody Henry, Bing Liang, Anjelle Martinez, et al. "ECO-FRIENDLY HABITAT RESTORATION: USING PHOTO-DEPRIVATION TO ERADICATE PHRAGMITES AUSTRALIS AND TO PROMOTE NATIVE PLANT SUCCESSION IN PIERMONT MARSH, NY, CONTINUED." In 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-310949.

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Bjornton, John, Yalinel Beltre, Alondra Cruz, Brian Delgado, Melody Henry, Kyra Herzberger, Keylen Lucero, et al. "ECO-FRIENDLY HABITAT RESTORATION: USING PHOTO-DEPRIVATION TO ERADICATE PHRAGMITES AUSTRALIS AND PROMOTE NATIVE PLANT SUCCESSION IN PIERMONT MARSH, NEW YORK, CONTINUED." In Joint 52nd Northeastern Annual Section and 51st North-Central Annual GSA Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017ne-290012.

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Toft, Adam, and John Sharples. "Achievements of the European Style Project Technical Training Programme." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28402.

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The STYLE project considers structural integrity for lifetime management of non-reactor pressure vessel components of nuclear power plant. The project is funded under the seventh European Commission framework programme. A broad objective of the project is to assess, optimise and develop application of advanced tools for structural integrity assessment of reactor coolant pressure boundary components other than the reactor pressure vessel. One aspect of the STYLE project is intended to address the issue of succession planning within the European nuclear industry. With many key technical experts now approaching retirement it is essential to progress the technical expertise of those at an earlier stage of their career in the industry.
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Reports on the topic "Plant succession"

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Foxx, T., M. Mullen, M. Salisbury, and G. Tierney. Old-field plant succession on the Pajarito Plateau. Office of Scientific and Technical Information (OSTI), October 1997. http://dx.doi.org/10.2172/563193.

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Angerer, J. P., W. K. Ostler, W. D. Gabbert, and B. W. Schultz. Secondary plant succession on disturbed sites at Yucca Mountain, Nevada. Office of Scientific and Technical Information (OSTI), December 1994. http://dx.doi.org/10.2172/114521.

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Firestone, Mary. Plant stimulation of soil microbial community succession: how sequential expression mediates soil carbon stabilization and turnover. Office of Scientific and Technical Information (OSTI), March 2015. http://dx.doi.org/10.2172/1177136.

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Zimmerman, Ephraim, and Staphanie Perles. Vegetation monitoring in relation to white-tailed deer browsing in First State National Historical Park: 2021 summary report. National Park Service, July 2023. http://dx.doi.org/10.36967/2299655.

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Baseline information on canopy regeneration and plant community composition is needed in order to better understand white-tailed deer browsing impacts at First State National Historical Park (FRST). In 2021, the Pennsylvania Natural Heritage Program (PNHP) established 20 permanent vegetation monitoring plots following methods developed by the NPS Eastern Rivers and Mountains Network (ERMN) to assess and monitor trends in vegetation (Perles et al. 2014b; Perles et al. 2017). These protocols provided an efficient method of assessing the current status of native and non-native vegetation and deer browsing impact. This report documents the methodology used to quantify the vegetative composition of natural areas at FRST and provides a summary of the data collected in the first year of monitoring. This first year’s activities (2021) included the initial baseline vegetation assessment and summary of results from the baseline data analysis. A variety of metrics used to assess the impact of deer browsing on the vegetation were calculated and are presented. A second survey is proposed for 2024. PNHP used the NPS ERMN database and analysis methods (Perles et al. 2014b) to summarize the condition in year 1 (2021). In year 4 (2024), PNHP will investigate changes in the condition of browse-sensitive understory plants and tree seedlings. Plots occurred in a variety of settings, ranging from younger successional communities to more mature forest stands. Seventy-five percent (75%) of the plots occurred in Mature or Late Successional forests. Disturbances and stressors, such as deer browsing can strongly influence future forest structure as open woodlands mature. A large population of white-tailed deer may severely impact succession from the open woodlands towards closed canopy forest. In closed canopy, later successional forests, a large deer population may inhibit canopy tree recruitment leading to regeneration failure. Given that FRST managers desire to maintain the landscape as forest, it is important to maintain an adequate number of seedlings and saplings of tree species to ensure the persistence of canopy of native tree species as Mature and Late Successional Forests continue to age. The 20 permanent sampling plots occurred within 5 plant communities described by Ebert (2016) and were classified using agglomerative hierarchical clustering (HAC analysis) and indicator species analysis. The most common plant communities within the group of sampling plots were the Mixed oak – beech forest and Mesic mixed tulip – oak-hickory-beech forest. The remaining plots were found in successional Tuliptree woodland, Successional woodland, and Thicket types. All plots were assigned to these types described in Ebert (2016) and crosswalked to the National Vegetation Classification (USNVC). A total of 128 plant species were recorded from the 20 plots at FRST. Eighteen (18) species were found in over ½ of the plots surveyed, of which eight (8) were non-native. In all, 29 plants occurring in the plots (23% of total species richness) were considered introduced (non-native). Non-native plant cover ranged from 0–98% as measured in the monitoring plot quadrats. Indicators of deer browsing varied by plant community type at FRST. In general, the drier Mixed oak – beech forests showed substantially greater impact of deer browsing and fewer seedlings of canopy species in the understory. FRST monitoring protocols focus on a few plant species considered as preferred food for white-tailed deer. Sustained browsing may be affecting long-term viability of these species within the parks. Based on the status of these regeneration metrics in FRST, we suggest that the forest in FRST are in imminent regeneration failure. We define imminent failure as parks that are experiencing severe regeneration failure and are at risk of forest loss due to very low seedling and sapling abundance, as well as species mismatches between canopy and regeneration layers. Given the poor regeneration of canopy species across all community types at FRST, managers should seek opportunities to conduct adaptive management in the park’s forests, especially mixed oak – beech forest, to experiment with and monitor the effects of fire, browse exclosures, and canopy thinning to encourage native canopy tree regeneration.
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Larkin, Jeffery L., D. J. ,. Jr McNeil, Emma Keele, Jeffery T. Larkin, Michael Akresh, and David King. Assessing eastern whip-poor-will and monarch butterfly responses to NRCS conservation programs targeting early-successional habitats in the eastern forests. Washington, D.C: Natural Resources Conservation Service, January 2022. http://dx.doi.org/10.32747/2022.8135353.nrcs.

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Throughout the eastern deciduous forests of North America, a lack of disturbance coupled with advancing ecological succession in many regions has led to forests dominated by even-aged sawtimber with very little in the early successional stage. Monitoring of response of these target species to early successional communities created through Working Lands for Wildlife and Regional Conservation Partnership Programs have been completed. ARU-based regional monitoring protocol was used to assess whip-poor-will occupancy across various landscapes contexts, silvicultural treatments, and forest types in the Appalachian Mountain and New England regions. Researchers conducted milkweed, monarch egg, and larvae surveys simultaneously with the pollinator surveys. Preliminary results support that increasing milkweed and nectar-rich plants within alder and upland early successional communities will provide valuable resources for the monarchs and other pollinators in the northern Great Lakes.--
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Boyle, Maxwell. Terrestrial vegetation monitoring at Cape Lookout National Seashore: 2022 data summary. National Park Service, 2024. http://dx.doi.org/10.36967/2303636.

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Parks within the Southeast Coast Network (SECN) host a diverse assemblage of plants and terrestrial vegetation communities. Vegetation communities are dynamic entities whose species composition, abundance, distribution, and structure are influenced by environmental factors and impacted over time by natural and anthropogenic disturbances. Determining trends in vegetation communities over time and identifying plant stressors is vital to understanding the ecological health of terrestrial ecosystems within SECN parks. Like most barrier islands along the southeastern coast, the vegetation communities along Cape Lookout National Seashore range from open beach and foredune grasslands on the ocean-facing side to tidal marshes on the sound-facing side. Between is a mixture of interdune swales, backdunes, and enclosed wetlands. Open upland vegetation is found on foredunes and occasional backdunes within the seashore. Cape Lookout National Seashore ecosystems are subjected to high frequencies of storm-, wind-, tide-, and wave-driven processes. Historic and current vegetation composition and structure are largely a result of these highly dynamic processes. Current vegetation patterns and processes across the Outer Banks are impacted and will continue to be impacted by rising sea-levels. Vegetation communities are vulnerable to overwash, which moves sand from the island?s ocean-side to the sound-side, brought on by more frequent and higher intensity storms. In 2019, Hurricane Dorian produced significant storm surge from the sound-side that overwashed the island and deposited sand into the ocean. Sand was scoured out from over 54 major cuts in the island, creating current ponds that are in various stages of succession. 2022 marked the first year of conducting this monitoring effort at Cape Lookout National Seashore. Forty-nine vegetation plots were established throughout the park in May and June. Data collected in each plot included species richness across multiple spatial scales, species-specific cover and constancy, species-specific woody stem seedling/sapling counts and adult tree diameter at breast height (DBH), overall tree health, landform, soil, observed disturbance, and woody biomass estimates. Data were stratified across four dominant broadly defined habitats within four park subunits: North Core Banks, South Core Banks, Cape Lookout, and Shackleford Banks. Broadly defined habitats monitored included: Open Upland Vegetation, Upland Forests and Shrublands, Nontidal Wetland Vegetation and Tidal Wetlands. One hundred and eighty-six vascular plant taxa were detected during this monitoring effort, including 11 taxa not detected in previous lists. Human-caused disturbances (e.g., historical plowing, shifting fire regimes, and altered hydrology) affecting plant communities within other SECN parks were not observed within these plots during this survey effort. Stunted plant growth was observed on several plots of Shackleford Banks and is likely caused by feral horse grazing. It is unclear from these data if grazing has impacted overall vegetation diversity and structure patterns across the island.
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Hemstrom, Miles, Thomas Spies, Craig Palmer, Ross Kiester, John Teply, Phil McDonald, and Ralph Warbington. Late-successional and old-growth forest effectiveness monitoring plan for the Northwest Forest Plan. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1998. http://dx.doi.org/10.2737/pnw-gtr-438.

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Philosoph-Hadas, Sonia, Peter B. Kaufman, Shimon Meir, and Abraham H. Halevy. Inhibition of the Gravitropic Shoot Bending in Stored Cut Flowers Through Control of Their Graviperception: Involvement of the Cytoskeleton and Cytosolic Calcium. United States Department of Agriculture, December 2005. http://dx.doi.org/10.32747/2005.7586533.bard.

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Original objectives: The basic goal of the present project was to study the mechanism involved in shoot graviperception and early transduction, in order to determine the sequence of events operating in this process. This will enable to control the entire process of gravity-induced differential growth without affecting vertical growth processes essential for development. Thus, several new postulated interactions, operating at the perception and early transduction stages of the signaling cascade leading to auxin-mediated bending, were proposed to be examined in snapdragon spikes and oat shoot pulvini, according to the following research goals: 1) Establish the role of amyloplasts as gravireceptors in shoots; 2) Investigate gravity-induced changes in the integrity of shoot actin cytoskeleton (CK); 3) Study the cellular interactions among actin CK, statoliths and cell membranes (endoplasmic reticulum - ER, plasma membrane - PM) during shoot graviperception; 4) Examine mediation of graviperception by modulations of cytosolic calcium - [Ca2+]cyt, and other second messengers (protein phosphorylation, inositol 1,4,5-trisphosphate - IP3). Revisions: 1) Model system: in addition to snapdragon (Antirrhinum majus L.) spikes and oat (Avena sativa) shoot pulvini, the model system of maize (Zea mays) primary roots was targeted to confirm a more general mechanism for graviperception. 2) Research topic: brassinolide, which were not included in the original plan, were examined for their regulatory role in gravity perception and signal transduction in roots, in relation to auxin and ethylene. Background to the topic: The negative gravitropic response of shoots is a complex multi-step process that requires the participation of various cellular components acting in succession or in parallel. Most of the long-lasting studies regarding the link between graviperception and cellular components were focused mainly on roots, and there are relatively few reports on shoot graviperception. Our previous project has successfully characterized several key events occurring during shoot bending of cut flowers and oat pulvini, including amyloplast displacement, hormonal interactions and differential growth analysis. Based on this evidence, the present project has focused on studying the initial graviperception process in flowering stems and cereal shoots. Major conclusions and achievements: 1) The actin and not the microtubule (MT) CK is involved in the graviperception of snapdragon shoots. 2) Gravisensing, exhibited by amyloplast displacement, and early transduction events (auxin redistribution) in the gravitropic response of snapdragon spikes are mediated by the acto-myosin complex. 3) MTs are involved in stem directional growth, which occurs during gravitropism of cut snapdragon spikes, but they are not necessary for the gravity-induced differential growth. 4) The role of amyloplasts as gravisensors in the shoot endodermis was demonstrated for both plant systems. 5) A gravity-induced increase in IP.
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Gasim, Anwar, Lester C. Hunt, and Jeyhun Mikayilov. Baseline Forecasts of Carbon Dioxide Emissions for Saudi Arabia Using the Structural Time Series Model and Autometrics. King Abdullah Petroleum Studies and Research Center, May 2023. http://dx.doi.org/10.30573/ks--2022-dp19.

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To tackle the threat of climate change, countries worldwide have signed the Paris Agreement. This agreement aims to limit the global average temperature increase to below 2 degrees Celsius and potentially below 1.5 degrees Celsius above pre-industrial levels (UNFCCC 2015). Parties to the Paris Agreement are required to submit domestic climate plans detailing their mitigation measures, known as nationally determined contributions (NDCs). These plans detail countries’ ambitions and efforts to combat and respond to climate change. NDCs are communicated at five-year intervals, and each successive NDC must represent an increase in ambition over the previous one.
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Swanson, David, and Celia Hampton-Miller. Drained lakes in Bering Land Bridge National Preserve: Vegetation succession and impacts on loon habitat. National Park Service, January 2023. http://dx.doi.org/10.36967/2296593.

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The northern coastal plain of Bering Land Bridge National Preserve (BELA) lost lakes at an alarming rate over the first two decades of this century, including four lakes over 100 ha in size in 2018-2019 alone. To understand the effects of these lake drainages, we sampled vegetation of these lakes in 2019 (a reconnaissance visit) and 2021 (for the installation of permanent vegetation monitoring plots). We used these data to summarize the changes that occurred in the first three years after drainage, and to create vegetation maps from 3-m resolution satellite images coinciding with the visit dates. We used time series of these satellite images to study the rate of drainage and vegetation colonization on the lakes. We analyzed our existing data from older drained lake basins (estimated to be more than 200 years since drainage) and reviewed the literature on vegetation change in drained lakes to understand the vegetation changes that are likely in the future. Finally, we used a model of lake occupancy by loons developed by Mizel et al. (2021) to predict the effect of the 2018-2019 lake drainages on available loon habitat, using both our detailed maps of the four sampled drained lakes, and also data on all drained lakes over most of northern BELA derived from Landsat satellite images. Our results show that the four study lakes drained early in the summer, before the end of June, in 2018 (3 lakes) and 2019 (one lake). A combination of record warm weather and heavy snowfall made 2018 and 2019 especially favorable for lake drainage: thaw subsidence probably enlarged existing drainage outlet channels from the lakes, and large amounts of spring snowmelt runoff deepened the outlet channels by thermal erosion (the combination of thaw and erosion). Drainage exposed moist loamy sediment on the lake bottoms that was rapidly colonized by plants. Substantial vegetation cover developed by late summer in the same year as lake drainage in one lake, in the first post-drainage summer in a second lake, and during the 2nd year after drainage in the remaining two lakes. The first vegetation communities to develop consisted of just one or two dominant species, notably Eleocharis acicularis (spike rush), Equisetum arvense (horsetail), and/or Tephroseris palustris (mastodon flower). Other important early species were Arctophila fulva (pendant grass) and Rorippa palustris (yellow cress). By year 3, the communities had become more diverse, with significant cover by taller wetland graminoid species, including A. fulva, Eriophorum scheuchzeri, and Carex aquatilis. Frozen soil was observed in most locations on the lakes in July of 2021, suggesting that permafrost was forming on the lake bottoms. Comparison of the three-year trends in vegetation change with data from older lake basins suggest that ultimately most lake basins will develop wet tundra communities dominated by Carex aquatilis and mosses, with various low shrub species on acid, peat-dominated soils and permafrost; however, this process should take several centuries. The loon habitat model suggests that drainage essentially eliminated the potential habitat for Yellow-billed Loons on the four study lakes, because the residuals ponds were too small for Yellow-billed Loons to take flight from. A total of 17 lakes drained in northern BELA in 2018-2019. As a result, the potential Yellow-billed Loon nesting habitat in northern BELA probably decreased by approximately 2%, while habitat for Pacific Loons decreased less, by about 0.6%. Habitat for the more abundant Red-throated Loons probably increased slightly as a result of lake drainage, because of their ability to use the small residual ponds created by lake drainage.
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