Find research datasets worth reusing

FIGURE 10 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 10. Characteristic landscapes in the Zagros (Khuz territory). a: Open forests of Quercus brantii; b: Juniperus woodlands as small patches creeping on rocks; c: Open to semi-dense shrublands of Lonicera nummulariifolia in the Zagros; d: Open to semi-dense shrublands of Amygdalus haussknechtii; e: Colchicum wendelboi, as a subalpine vegetation; f: Subalpine vegetation dominated by thorncushion plants and aromatic species (Photos by M. Dinarvand).

FIGURE 9 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 9. Characteristic landscapes in the plain area of Khuz. a: Salty soil places with halophytes; b: Salt marsh vegetation dominated by Halocnemum strobilaceum; c: Horalazim wetland; d: Dune area with Calligonum intertextum shrubs on top of hills; e: Dust source (in Mahshahr); f: Natural biologic fixation of soil with local plants (Capparis spinosa); g: Water pit in dust source area; h: Grazing pressure (Suaeda vermiculata and Halocnemum strobilaceum) in dust sources (Photos by M. Dinarvand).

FIGURE 8 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 8. The life-form spectrum of the flora of dust areas of Khuz. Ch: chamaephytes; He: hemicryptophytes; Ph: phanerophytes; C: cryptophytes; Th: therophytes.

FIGURE 6 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 6. The proportion of phytogeographical groups in the flora of Khuz. IT: Irano-Turanian, SS: Sahara-Sindian, Cosm: Cosmopolitan, Endemic.

FIGURE 3. Ombrothermic graphs prepared using 22 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 3. Ombrothermic graphs prepared using 22-year (1996–2018) data from three synoptic stations close to the dust resources area (south, east, and center of Khuz).

FIGURE 5 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 5. The life-form spectrum of the flora of Khuz. Ch: chamaephytes, He: hemicryptophytes, Ph: phanerophytes, C: cryptophytes, and Th: therophytes.

FIGURE 2 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 2. Map of dust resources in Sub-Basin of Khuz rivers (prepared by Study section of dust resources-RIFR).

FIGURE 7 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 7. sd: dune species; s: species of salty soil area; sd, s: species adapted to both climate and soil of Khuz.

FIGURE 1 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 1. (Right): Map of Iran in the Middle East, the inset shows the position of Khuzestan province; (Left): Topographic map of Khuzestan province (prepared by F. Soozangar).

FIGURE 4. Ombrothermic graphs prepared using 22 in Plant diversity of Khuzestan and dust sources in the southwest of Iran, with a checklist of vascular plants

FIGURE 4. Ombrothermic graphs prepared using 22-year (1996–2018) data from three synoptic stations close to the mountain area in the north of Khuz.

FIGURE 5 in The endemic and range restricted vascular plants of Croatia: diversity, distribution patterns and their conservation status

FIGURE 5 (a) Correlation between the proportion of endemic species and specific richness in Croatia and several other areas (circle—non- European areas, triangle—European areas) (r = 0.312, p <0.05): areas above the diagonal line exhibit less than the expected endemism, and areas below the line exhibit more than the expected endemism (Croatia (EndS)—Endemics only, Croatia (RRS)—range restricted species and endemics). The compiled data are from Médail & Verlaque (1997), Georghiou & Delipetrou (2010), Casazza et al. (2005), Goldblatt (1997), Grooombridge (1992). (b) Correlation between the proportion of endemic plant taxa with respect to the total flora in a sample of European countries and areas and in eighteen latitude classes (based on the broad position of the country centroid) (r = 0.64, p <0.05).

FIGURE 4 in The endemic and range restricted vascular plants of Croatia: diversity, distribution patterns and their conservation status

FIGURE 4 (a) Relationship between number of taxa (EndS + RRS) and the longitude-latitude ratio: numbers of taxa found in southeast are higher than the numbers of taxa found in northwest Croatia (based on 1 km2 grid cells) (r = 0.09, p <0.05). (b) The altitudinal distribution of taxa within 100 m altitudinal belts.

FIGURE 3 in The endemic and range restricted vascular plants of Croatia: diversity, distribution patterns and their conservation status

FIGURE 3 Maps depicting the number of (a) endemic (EndS) and (b) range restricted species (RRS) per grid cell.

FIGURE 2 in The endemic and range restricted vascular plants of Croatia: diversity, distribution patterns and their conservation status

FIGURE 2 Histogram showing the numbers of endemic (EndS) and range restricted species (RRS) in each of the five biogeographic region in Croatia: Mediterranean (Med), Continental (Con), Alpine (Alp), and Pannonian (Pan). Taxa belonging to two regions were also specified, while taxa more widespread to more than two regions were reported as 'W'. In case the distribution data was not sufficient, taxa were considered as data deficient (DD).

opencc-zeroDec 2018View details →

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

The research about species richness pattern and elevational Rapoport's rule (ERR) have been carried out mostly in the temperate regions in the recent years and scarcely in the tropical mountains; meanwhile, it is unclear whether the ERR is consistent among different life‐forms and phytogeographic affinities. Here, we compiled a database of plant species of Mount Kenya, a tropical mountain of East Africa, and divided these species into twelve groups depending on the life‐form and phytogeographic affinity of each species. We inspected the species richness pattern of each group along the elevation gradient and also tested ERR of each group using Stevens' method. Our results showed that species richness of the total species showed a positively skewed (hump‐shaped) pattern along the elevation gradient and different life‐forms and phytogeographic affinities showed similar hump‐shaped patterns as the total species. The average elevation range size of the total species and herbaceous species showed increasing patterns along the elevation gradient, while lycophytes and ferns, and woody species showed an obvious downward trend after peaking in the high elevation regions. We concluded that the widely distributed herbaceous species which also have broad elevation range sizes are more applicable to ERR, while the narrowly distributed woody species with small elevation range sizes occurring in the higher elevations could reverse ERR. Therefore, we concluded that the ERR is not consistent among different organisms in the same region.

opencc-zeroDec 2012View details →

Data from: Vascular plants mediate the effects of aridity and soil properties on ammonia-oxidizing bacteria and archaea

An integrated perspective of the most important factors driving the abundance of ammonia-oxidizing bacteria (AOB) and archaea (AOA) in natural ecosystems is lacking, especially in drylands. We evaluated how different climatic, abiotic, and nutrient-related factors determine AOA and AOB abundance in bare and vegetated microsites from grasslands throughout the Mediterranean Basin. We found a strong negative relationship between the abundance of AOA genes and soil fertility (availability of C, N, and P). Aridity and other abiotic factors (pH, sand content, and electrical conductivity) were more important than soil fertility in modulating the AOA/AOB ratio. AOB were more abundant under vegetated microsites, while AOA, highly resistant to stressful conditions, were more abundant in bare ground areas. These results suggest that AOA may carry out nitrification in less fertile microsites, while AOB predominate under more fertile conditions. Our results indicate that the influence of aridity and pH on the relative dominance of AOA and AOB genes is ultimately determined by local-scale environmental changes promoted by perennial vegetation. Thus, in spatially heterogeneous ecosystems such as drylands, there is a mutual exclusion and niche division between these microorganisms, suggesting that they may be functionally complementary.

opencc-zeroDec 2014View details →

Data from: Lake sediment multi-taxon DNA from North Greenland records early post-glacial appearance of vascular plants and accurately tracks environmental changes

High Arctic environments are particularly sensitive to climate changes, but retrieval of paleoecological data is challenging due to low productivity and biomass. At the same time, Arctic soils and sediments have proven exceptional for long-term DNA preservation due to their constantly low temperatures. Lake sediments contain DNA paleorecords of the surrounding ecosystems and can be used to retrieve a variety of organismal groups from a single sample. In this study, we analyzed vascular plant, bryophyte, algal (in particular diatom) and copepod DNA retrieved from a sediment core spanning the Holocene, taken from Bliss Lake on the northernmost coast of Greenland. A previous multi-proxy study including microscopic diatom analyses showed that this lake experienced changes between marine and lacustrine conditions. We inferred the same environmental changes from algal DNA preserved in the sediment core. Our DNA record was stratigraphically coherent, with no indication of leaching between layers, and our cross-taxon comparisons were in accordance with previously inferred local ecosystem changes. Authentic ancient plant DNA was retrieved from nearly all layers, both from the marine and the limnic phases, and distinct temporal changes in plant presence were recovered. The plant DNA was mostly in agreement with expected vegetation history, but very early occurrences of vascular plants, including the woody Empetrum nigrum, document terrestrial vegetation very shortly after glacial retreat. Our study shows that multi-taxon metabarcoding of sedimentary ancient DNA from lake cores is a valuable tool both for terrestrial and aquatic paleoecology, even in low-productivity ecosystems such as the High Arctic.

opencc-by-4.0Oct 2024View details →

Vascular plant species list of managed oak stands in the Bory Stobrawskie Forest (SW Poland, Central Europe)

This is the second version of the species list, which has been expanded to include additional ecological and statistical information for each species.  The data were collected in the summer of 2023 from 100 circular plots (each measuring 314 m²) located in forest stands aged between 41 and 180 years, which were dominated by oak trees —pedunculate oak (Quercus robur L.) and/or sessile oak (Quercus petraea (Matt.) Liebl.). The study area was situated in the Bory Stobrawskie mesoregion in the Opole voivodeship, Poland (50°31'-50°59'N, 17°40'-18°35'E). The species list includes the percentage frequency, fidelity, and average cover values, which were calculated using the JUICE software for all plots and for plots located in middle-aged (41–80 years) and old (100–180 years) stands. For each species, information is also provided on: life form, life strategy and forest species category. The newly added data includes information on whether a species is considered an ancient forest species, its ecological indicator values for soil moisture, soil nitrogen, soil reaction, light, and temperature, and its rarity in Poland.

opencc-zeroNov 2022View details →

Species list of vascular plants observed on Peberholm 1999–2020

Peberholm is a constructed Danish island in the Øresund strait. It was primarily constructed by calcareous clay from the seafloor and is traversed by a highway and a railway. Being constructed from material without a seed bank, Peberholm constituted a good opportunity to study primary succession in an anthropogenic context. In this study, data from a survey of the vascular plant community of Peberholm was studied. The data span a 22-year period, between 1999 and 2020. The development of the flora was analysed with regards to indicators for environmental factors and vegetation types, as well as occurrence of alien species or species of conservation concern. Peberholm experienced a rapid succession during its first 5 years. The effects of the initial ground disturbance quickly wore off, resulting in a relative decline in plant communities associated with ruderal land. These highly anthropogenic habitats were replaced with grasslands. The shrubification also began early on. The rapid initial changes were then replaced with a much slower but also more continuous change, resulting in the development of both more natural grasslands and an increased shrubification. Although several rare or threatened species colonized Peberholm from the beginning, the conservation value of the flora on a whole increased during the succession process of forming more natural vegetation types. The succession process demonstrated at Peberholm has more in common with the succession at urban soils than with naturally occurring primary succession.