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229 results for “plant species richness”
Figure 6 in Multi-scale patterns in the host specificity of plant-dwelling arthropods: the influence of host plant and temporal variation on species richness and assemblage composition of true bugs (Hemiptera)
Figure 6. Relationship between the effectively specialized fauna (squares) and singleton species (circles) for the number of hemipteran species from each sampling period and for the entire collection. An exponential decay equation is fitted for effectively specialized fauna, y = 2.973∗ exp (−0.00575∗ x) + (−1.478), R2 = 0.7598, and for singleton species, y = 22.53∗exp (−0.08466∗x) + 0.2614, R2 = 0.9873.
Data for: Mechanisms of fire-maintained plant species diversity in species-rich wet pine savannas
<p><span>Temperate savannas and grasslands maintained by frequent, low-intensity disturbances such as fire contain among the most species-rich plant communities in the world. Precisely how these disturbances maintain such high fine-scale diversity is poorly understood. This study examined the effects of the frequency of simulated fire (clipping combined with litter removal) and the relative importance of recruitment and survival on species diversity and trait and species composition at each of two pine savannas in southeastern Mississippi (USA) that had not been recently burned. Ten 2 </span><span>×</span><span> 2 m plots at each site were clipped/cleared annually from 2014 to 2019 and again in spring 2021 (annual frequency). The other 10 clipping plots were not clipped from 2018 to 2020 (reduced frequency). Vegetation in small subplots in annual frequency and reduced frequency plots was compared in August 2021 to test the effects of a short period without clipping on diversity and composition. To test the relative importance of recruitment and survival on diversity and composition, four 0.25 </span><span>×</span><span> 0.25 m quarter plots were established within each of 10 annual-frequency plots per site following a clipping treatment in fall 2019 and assigned a 2 </span><span>×</span><span> 2 factorial arrangement of transplantation of sods from long-unburned areas and herbicide application. Reducing the frequency of clipping reduced plant diversity and altered composition at both sites. A comparison of diversity and trait composition responses to transplant and herbicide treatments revealed how recruitment and survival combined to affect species diversity. Partial or complete recovery of diversity following clipping and litter removal at both sites was driven by rapid increases in short-lived, resilient species that show fire-stimulated emergence from a seed bank and the persistence of long-lived species capable of surviving the prolonged period without fire or clipping. Species with reduced resilience and persistence were more likely to be lost in the reduced frequency treatment. Results are consistent with a model of short-term coexistence of maximum species diversity maintained by the most frequent fire regimes fuels will permit.</span></p>
Data from: Nitrogen addition and warming modulate the pathogen impact on plant biomass by shifting intraspecific functional traits and reducing species richness
<p><span>1. </span><span>Foliar fungal pathogens can substantially reduce plant biomass. This effect can be modulated by environment conditions, such as soil nitrogen availability and air temperature. The ongoing global changes are altering these variables and thus interact with pathogens to influence plant biomass, but experimental test of their interactions is scarce. </span></p> <p><span>2. </span><span>We conducted a 4-year field experiment in a Tibetan alpine meadow to examine the interactive effects of nitrogen addition, warming and foliar pathogens (via fungicide application) on plant biomass. We also measured plant functional traits, species richness and abundance to test the possible mechanisms underlying these interactions. </span></p> <p><span>3. </span><span>Our results showed that foliar fungal pathogens reduced plant community biomass under nitrogen addition, which in turn weakened the positive nitrogen effect on community biomass. Mechanistically, nitrogen addition shifted the plant communities towards fast-growing traits; this happened predominantly because of changes in within-species trait values, including an increase in specific leaf area and height. These trait changes resulted in greater suppression of plant biomass by pathogens, likely because of the trade-offs associated with the allocation of resources to plant growth and defense. Moreover, the reduction in species richness amplified the pathogen effect under nitrogen addition due to the increased density and susceptibility of the most dominant species (i.e. Kobresia capillifolia). Furthermore, warming did not interact with pathogens and nitrogen addition to influence plant community biomass, but their three-way interaction modified the biomass of K. capillifolia. Specifically, warming enhanced the positive effect of nitrogen addition on the biomass of K. capillifolia in the fungicide, low infection plots, while it weakened the nitrogen effect in the no fungicide, high infection plots.</span></p> <p><span>4. </span><span>Synthesis:</span> <span>Our results demonstrate how pathogens interact with nitrogen addition and warming to influence the biomass of dominant species and the whole plant community. Our study highlights the importance of considering foliar fungal pathogens when assessing ecosystem responses to multiple global change factors.</span></p>
Vascular plant species richness in Poland version 1.1
<p>It is slightly modified, in the results of reviewers' comments, version of the "Vascular plant species richness in Poland version 1.0" dataset. The changes involve file names and their organization within the dataset.</p> <p>Poland has a long tradition of geobotanical studies. However, outputs of this research have never been used for mapping vascular plant species richness at a larger spatial scale. Here we presented the results of joining and harmonization data from distribution atlas of vascular plants in Poland (Zając and Zając 2001, 2019), and Polish Vegetation Database (Kącki and Śliwiński 2012) to obtain a comprehensive data set on vascular plant species richness in a 10 x 10 km square grid, covering the territory of entire Poland. The presented data set is based on the recent version of the both above-mentioned data sources, provided for harmonization in 2020. The species were classified according to their origin, conservation status, and frequency of occurrences. The 10x10 km spatial grid was prepared by Komsta (2016) and Verey (2017). We used the grid system downloaded from:<a href="https://worldbig.org/atpol/"> https://worldbig.org/atpol</a>, and clipped it to the study area extent.</p> <p>Kącki, Z. and Śliwiński, M., 2012. The Polish Vegetation Database: structure, resources and development. Acta societatis botanicorum Poloniae, 81(2). DOI: 10.5586/asbp.2012.014</p> <p>Komsta, Ł., 2016. ATPOL geobotanical grid revisited-a proposal of coordinate conversion algorithms. Annales Universitatis Mariae Curie-Skłodowska. Sectio E, Agricultura, 71(1), pp.31-37.</p> <p>Verey, M (2017). Teoretyczna analiza i praktyczne konsekwencje przyjęcia modelowej siatki ATPOL jako odwzorowania stożkowego definiującego konwersję współrzędnych płaskich na elipsoidę WGS 84. Fragmenta Floristica et Geobotanica Polonica, 24(2), 469-488.</p> <p>Zając A. (1978) Atlas of distribution of vascular plants in Poland (ATPOL). Taxon, 481-484. <a href="https://doi.org/10.2307/1219899">https://doi.org/10.2307/1219899</a></p> <p>Zając A., Zając, M. (2001) Atlas rozmieszczenia roślin naczyniowych w Polsce. Nakładem Pracowni Chorologii Komputerowej Instytutu Botaniki Uniwersytetu Jagiellońskiego, Kraków</p> <p>Zając, A., & Zając, M. (2019). Distribution atlas of vascular plants in Poland: appendix. Institute of Botany, Jagiellonian University.–Kraków.</p> <p> </p> <p><strong>This dataset consists: </strong></p> <p><strong>Files_description - </strong>file with a description of the data stored.</p> <p><strong>Taxa_list.</strong> The nomenclature according to Euro+Med PlantBase (Euro+Med.) and operational taxonomical units (OTUs) used for analysis and mapping in the project. For simplification, the taxonomical operational units are called ‘species’.</p> <p><strong>Taxa_status</strong>. The species affinity to taxonomic units (family, genera), status in Polish flora (native, archeophytes, neophytes), conservation status (Red List species), and frequency of their distribution (rare, moderate and common). </p> <p><strong>Species_richness. </strong>Statistics on species richness and frequency in species groups for 10 × 10 km ATPOL squares. The names of squares according to original names in the ATPOL project (Zając 1978). The sampling bias (SB) shows adequately sampled squares labelled with 1, while squares with 0 are those with low sampling effort. Cross-boundary squares (CBS) denoted by 1 are squares with more than 80% of the area within the terrestrial territory of Poland, while squares with CBS of 0 are those with 80% or less of the area within the terrestrial territory of Poland. The detail information about the particular columns is shown in ‘Files_description’ and ‘Taxa_status’ files.</p> <p><strong>Map_data</strong>. A shapefile with squares geospatial locations, codes of their names, and data on species richness and frequency in species groups. The map is registered in WGS 84 coordinate reference system (EPSG code 4326). The abbreviations and square names used in ‘dbf’ file are the same as those used in ‘Species_richness’ file.</p> <p> </p>
Worldwide evidence of a unimodal relationship between productivity and plant species richness
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Data from: Persistence at the final stage of volcanic island ontogeny: abiotic predictors explain native plant species richness on 111 remote Pacific atolls
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Data from: Predicting spatial patterns of plant species richness: a comparison of direct macroecological and species stacking modelling approaches
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Richness, not evenness, of invasive plant species promotes invasion success into native plant communities via selection effects
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Data for: Mechanisms of fire-maintained plant species diversity in species-rich wet pine savannas
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Data from: Measures of biologically relevant environmental heterogeneity improve prediction of regional plant species richness
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Data from: Plant species richness negatively affects root decomposition in grasslands
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Key roles for the freezing line and disturbance in driving the low plant species richness of temperate regions
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Data from: High-resolution and large-extent mapping of plant species richness using vegetation-plot databases
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Data from: Plant community composition and species richness in the High Arctic tundra: from the present to the future
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Data from: Plant species richness and sunlight exposure increase pollinator attraction to pollinator gardens
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Data from: Plant species richness belowground: higher richness and new patterns revealed by next generation sequencing
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Data from: Richness of plant communities plays a larger role than climate in determining responses of species richness to climate change
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Changes in plant species richness due to land use and nitrogen deposition across the globe
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Data from: Environmental niche conservatism explains the accumulation of species richness in Mediterranean-hotspot plant genera
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Data from: The species richness pattern of vascular plants along a tropical elevational gradient and the test of elevational Rapoport's rule depend on different life‐forms and phytogeographic affinities
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