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99 results for “coastal dune”
Dune Biomass on Hog Island, Virginia Coastal Barrier Islands, 1993-2012 (Reformatted to the ecocomDP Design Pattern)
This data package is formatted as an ecocomDP (Ecological Community Data Pattern). For more information on ecocomDP see https://github.com/EDIorg/ecocomDP. This Level 1 data package was derived from the Level 0 data package found here: https://pasta.lternet.edu/package/metadata/eml/knb-lter-vcr/70/25. The abstract below was extracted from the Level 0 data package and is included for context:
Dune Biomass on Hog Island, Virginia Coastal Barrier Islands, 1993-2012 (Reformatted to a Darwin Core Archive)
This data package is formatted as a Darwin Core Archive (DwC-A, event core). For more information on Darwin Core see https://www.tdwg.org/standards/dwc/. This Level 2 data package was derived from the Level 1 data package found here: https://pasta.lternet.edu/package/metadata/eml/edi/323/2, which was derived from the Level 0 data package found here: https://pasta.lternet.edu/package/metadata/eml/knb-lter-vcr/70/25. The abstract below was extracted from the Level 0 data package and is included for context:
Assessment of current and future invasive plants in protected dune habitats of the Atlantic coastal region for the LIFE DUNIAS project (LIFE20 NAT/BE/001442)
<p>This .csv file contains the raw data from the risk screening supplementing the LIFE DUNIAS horizon scan for (invasive) alien species in protected habitats of Atlantic coastal dune ecosystems (<a href="https://doi.org/10.21436/inbor.86703335">Adriaens et al. 2022</a>). We gladly refer to the annexes and methods section in this report for more explanation about the fields and their contained values.</p> <p>The file contains the following fields:</p> <p><em>TaxonName</em>: original taxonomic name of the considered alien species</p> <p><em>WorkName</em>: taxonomic name of the considered alien species after lumping of subspecies, closely related species of a complex, functionally similar species of the same genus (see chapter 3.1)</p> <p><em>hab_xxxx</em> (1110, 1130, 1140, 1210, 1230, 1310, 1320, 1330, 2110, 2120, 2130, 2140, 21A0, 2150, 2190, 2160, 2170, 2180): susceptibility of habitat for the alien species (4-digit code refering to the Annex I habitat under the Habitats Directive) </p> <p><em>occ_XX</em> (BE, FR, IE, NL, ES, UK, DK, DE, PT, ALL): occupancy of the alien species in different countries of the Atlantic European region (as the number of 10km<sup>2</sup> squares per country). Country codes: BE = Belgium, FR = France, IE = Ireland, NL = Netherlands, ES = Spain, UK = United Kingdom, DK = Denmark, DE = Germany, PT = Portugal, ALL = total for all countries.</p> <p><em>scor_XXX_xxxx</em>: score of the assessment per criterium (INT = introduction, EST = establishment, SPR = spread, IMP = ecological impact, ALL = overall score) and per habitat group (salt = salties, sand = sandies, shru = shrubbies) conf_<em>XXX_xxxx</em>: confidence on the scores of the assessment per criterium (INT = introduction, EST = establishment, SPR = spread, IMP = ecological impact, ALL = overall score) and per habitat group (salt = salties, sand = sandies, shru = shrubbies)</p> <p><em>scor_ALL_MAX</em>: maximum ecological impact score of the alien taxon across all habitats</p>
Dataset from Pardini, E. A., Parsons, L. S., Ştefan, V., & Knight, T. M. (2018). GLMM BACI environmental impact analysis shows coastal dune restoration reduces seed predation on an endangered plant. Restoration Ecology, 26(6), 1190-1194.
<p>Data and its metadata used in the analysis from the publication: Pardini, E. A., Parsons, L. S., Ştefan, V., & Knight, T. M. (2018). GLMM BACI environmental impact analysis shows coastal dune restoration reduces seed predation on an endangered plant. Restoration Ecology, 26(6), 1190-1194. <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/rec.12678">https://onlinelibrary.wiley.com/doi/full/10.1111/rec.12678</a> </p>
Figure 1. A in Structural and diversity changes in coastal dunes from the Mexican Caribbean: the case of the invasive Australian pine (Casuarina equisetifolia)
Figure 1. A) Location of Cozumel Island within the Yucatán Peninsula. B) Study area on the north side of Cozumel Island. C) The distribution of Casuarina equisetifolia, shown as dark gray polygons and the sampling plots (numbered circles). Plots 1, 6–9 are the invaded, while plots 2–5, 10 are non-invaded.
Figure 3 in Structural and diversity changes in coastal dunes from the Mexican Caribbean: the case of the invasive Australian pine (Casuarina equisetifolia)
Figure 3. Grouping of invaded (triangles) and non-invaded (squares) sampling plots according to their species composition similarity (PERMANOVA). The numbers close to the symbols are the assigned sampling plot number. The dotted lines represent the scores' standard deviation of each group. The solid black lines represent the distance (similarity) between sampling plots.
Fig. 2 in Preliminary assessment of trampling effects on soil-dwelling insects in coastal dunes of El Saladar, southeastern Spain.
Fig. 2.- Soil and vegetation conditions at El Saladar dunes (Alicante, Spain). a.- Yellow dune (YD) crossed by pedestrian path (YDt). b.- Grey dune (GD) crossed by pedestrian path (GDt). Fig. 2.- Condiciones de suelo y vegetación en las dunas de El Saladar (Alicante, España). a.- Duna móvil (YD) cruzada por un camino peatonal (YDt). b.- Duna fija (GD) cruzada por un camino peatonal (GDt).
Sand lizards (Lacerta agilis) decrease nymphal infection prevalence for tick-borne pathogens Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum in a coastal dune ecosystem
<p>1. Understanding which factors determine tick-borne disease hazard can contribute to effective disease control. In Europe, the hazard of the pathogens <em>Borrelia burgdorferi</em> s.l. and <em>Anaplasma phagocytophilum</em> is determined by local tick densities (mainly <em>Ixodes ricinus</em>) and the reservoir competence of the host species community. Sand lizards (<em>Lacerta agilis</em>) are common hosts for larvae and nymphs of <em>I. ricinus</em> and non-competent reservoirs for both pathogens. Consequently, high relative abundance of <em>L. agilis</em> is hypothesized to be associated with lower infection prevalence in nymphs. Here, we aimed to test whether this effectively occurs in natural settings.</p> <p>2. We sampled different habitat types within a heterogenous dune landscape at the Dutch coast and estimated 1) <em>L. agilis</em> densities, 2) host community competence, 3) the density and infection prevalence of questing<em> I. ricinus</em> ticks, and 4) the number and infection prevalence of ticks feeding on <em>L. agilis</em>.</p> <p>3. Captured <em>L. agilis</em> had high tick burdens and contributed substantially to feeding <em>I. ricinus</em> larvae in their natural habitat. <em>B. burgdorferi</em> s.l. and <em>A. phagocytophilum</em> were virtually absent from feeding larvae and nymphs.</p> <p>4. The nymphal infection prevalence of both pathogens in questing ticks was lower in habitat types where <em>L. agilis</em> was more abundant. Hence, <em>L. agilis</em> strongly reduced community competence.</p> <p>5. The density of questing nymphs was higher in habitat types with denser vegetation and also varied more between habitat types than infection prevalence. As a result, nymphal density had a stronger effect on the density of infected ticks than did nymphal infection prevalence.</p> <p>6. Synthesis and applications. Coastal dune habitats favourable for <em>L. agilis</em> have lower densities of questing nymphs, and a lower human infection hazard. These results might be applicable to similar ecosystems where <em>L. agilis</em> is present. From a public health perspective, this underlines the importance of preserving early successional habitat, as encroaching shrubs are associated with higher tick-borne disease hazard, and vegetation removal might be a solution to reduce hazard in coastal dunes. The high degree of spatial heterogeneity in the abundance of tick-borne pathogens also poses opportunities to manage recreational activities to limit human exposure to tick-borne diseases.</p>
Sand lizards (Lacerta agilis) decrease nymphal infection prevalence for tick-borne pathogens Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum in a coastal dune ecosystem
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Dune Biomass on Hog Island, Virginia Coastal Barrier Islands, 1993-2012
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Data from: The contribution of hybridization to range‐wide population genetic structure in a Pacific coastal dune plant
<p>Premise of the study: Interspecific hybridization can cause genetic structure across species ranges if the mating system and degree of sympatry/parapatry with close relatives varies geographically. The coastal dune endemic <em>Camissoniopsis cheiranthifolia</em> (Onagraceae) exhibits genetic subdivisions across its range, some of which are associated with shifts in mating system from outcrossing to selfing, while others are not. For instance, strong differentiation between large-flowered, self-incompatible (LF-SI) and large-flowered, self-compatible (LF-SC) populations occurs without much reduction in outcrossing or obvious barriers to gene flow. We hypothesized that LF-SI diverged from LF-SC via hybridization with the predominantly inland SI sister species <em>C. bistort</em>a.</p> <p>Methods: We analyzed spatial proximity using 1460 herbarium records, and genetic variation at 12 microsatellites assayed for 805 and 404 individuals from 32 <em>C. cheiranthifolia</em> and 18 <em>C. bistorta</em> populations, respectively. We also assayed nine chloroplast microsatellites for 124 and 111 individuals from 27 and 19 populations, respectively. </p> <p>Key results: Closer parapatry was associated with unexpectedly high genetic continuity between LF-SI <em>C. cheiranthifolia</em> and <em>C. bistorta</em>. LF-SI genotypes clustered with <em>C. bistorta</em> exclusive of other <em>C. cheiranthifolia</em> genotypes. Similarly, pairwise FST among SI <em>C. cheiranthifolia</em> and <em>C. bistorta</em>, adjusted for geographic proximity, was not higher between heterospecific than conspecific populations. </p> <p>Conclusions: The lack of genetic differentiation between LF-SI <em>C. cheiranthifolia</em> and <em>C. bistorta</em> populations, even those located away from the zone of parapatry, suggests that LF-SI <em>C. cheiranthifolia</em> instead of hybridizing with <em>C. bistorta</em> is rather an ecotype of <em>C. bistorta</em> that has adapted to coastal dune habitat independent of other lineages in <em>C. cheiranthifolia</em> proper.</p>
Back into the past: Resurveying random plots to track community changes in Italian coastal dunes
<p>This dataset includes two excel sheets. The first contains vegetation data ("species_data", a matrix of 668 plots x 213 species) and the second contains plant functional traits data ("traits_data") that were used to evaluate temporal changes in taxonomic and functional diversity of Mediterranean coastal dune habitats.</p> <p><span><span><span><span><span><span><span><span><span><span><span>As to the first sheet ("species_data"): vegetation data were collected at two points in time (Time 0, hereafter T<sub>0</sub>: 2002-2007, and Time 1, herafter T<sub>1</sub>: 2017-2018) in 334 randomly-sampled, georeferenced, standardized (4 m<sup>2</sup>) plots. Historical data used for the resurveying study were extracted from RanVegDunes (Sperandii et al. 2017). Details on the resurveying protocol can be found in Sperandii et al. (2019), but in short: resampling activities took place during the same months in which the original sampling was done, and plot positions were relocated using a GPS unit on which historical geographic coordinates were stored. Plots are located in coastal dune sites along the Tyrrhenian and Adriatic coasts of Central Italy, and belong to herbaceous communities classified into the following EU Habitats (sensu Annex I 92/43/EEC): upper beach (Habitat 1210), embryo dunes (Habitat 2110), shifting dunes (Habitat 2120), fixed dunes (Habitat 2210), and dune grasslands (Habitat 2230). A subset of plots could not be classified into an EU Habitat because they were highly disturbed or invaded by alien species ("NC-plots"). The matrix includes cover data, expressed as percentage (%) cover. </span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span>As to the second sheet ("traits_data"): this sheet includes data on 3 plant functional traits, two of them quantitative (plant height, specific leaf area - SLA) and one qualitative (plant lifespan). Data for the quantitative traits represent species-level average trait values and were extracted from "TraitDunes", a database registered on the global platform TRY (Kattge et al., 2020). Functional trait data were collected in the same sites covered by the resurveying study. Functional trait data were originally measured on the most abundant species, and are available for a varying number of species depending on the trait.</span></span></span></span></span></span></span></span></span></span></span></p> <p>References:</p> <p>Kattge, J., Bönisch, G., Díaz, S., Lavorel, S., Prentice, I. C., Leadley, P., ... & Wirth, C. (2020). TRY plant trait database–enhanced coverage and open access. Global Change Biology.</p> <p>Sperandii, M.G., Prisco, I., Stanisci, A., & Acosta, A.T.R (2017). RanVegDunes-A random plot database of Italian coastal dunes. Phytocoenologia, 47(2), 231-232.</p> <p>Sperandii, M.G., Bazzichetto, M., Gatti, F., & Acosta, A.T.R. (2019). Back into the past: Resurveying random plots to track community changes in Italian coastal dunes. Ecological Indicators, 96, 572-578.</p>
A preliminary field trial to compare control techniques for invasive Berberis aquifolium in Belgian coastal dunes
Non-native Berberis aquifolium is notoriously invasive in Belgian coastal dunes. With its strong clonal growth through suckers, this evergreen shrub outcompetes native species and affects dune succession. To prevent further secondary spread and mitigate its impact, there was an urgent need for knowledge on the effectiveness of control measures, both at the plant and habitat level. Here, we report on a first control experiment. Individual B. aquifolium clones were subjected to one of four treatments (manual uprooting, foliar herbicide application, stem cutting followed by herbicide or salt application), with regrowth being measured up to one year after treatment. Plants proved most susceptible to foliar herbicide application (5% glyphosate solution), resulting in 77% of the clones apparently killed. We discuss the limitations of our experiment and the potential for actual field application of the different treatments. We present some guidelines for future control that may become further refined as experience builds up.
Figure 2 in Structural and diversity changes in coastal dunes from the Mexican Caribbean: the case of the invasive Australian pine (Casuarina equisetifolia)
Figure 2. Height patterns of the coastal dune vegetation in the sampling plots.
Image 4 in Coastal sand dune flora in the Thoothukudi District, Tamil Nadu, southern India
Image 4. Citrullus colocynthes
Image 6 in Coastal sand dune flora in the Thoothukudi District, Tamil Nadu, southern India
Image 6. Gisekia pharnaceoides
Image 3 in Coastal sand dune flora in the Thoothukudi District, Tamil Nadu, southern India
Image 3. Bulbostylis barbata
Image 8 in Coastal sand dune flora in the Thoothukudi District, Tamil Nadu, southern India
Image 8. Pedalium murex
Figure 1 in Coastal sand dune flora in the Thoothukudi District, Tamil Nadu, southern India
Figure 1. Study area
Image 1 in Coastal sand dune flora in the Thoothukudi District, Tamil Nadu, southern India
Image 1. Sand dune in Manapadu Village
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