Ori Fragman-Sapir - Academia.edu (original) (raw)

Uploads

Papers by Ori Fragman-Sapir

SSR markers used, their expected size range, repeated motives and number of alleles found in natu... more SSR markers used, their expected size range, repeated motives and number of alleles found in naturally growing olive populations. Raw microsatellite data is available and enclosed as Additional file 2: Table S2. (PDF 188 kb)

… of Our World in the Wake …, 1996

... FLORA (NORTH ISRAEL) R. Nathan, A. Shmida and O. Fragman Department of Evolution, Systematics... more ... FLORA (NORTH ISRAEL) R. Nathan, A. Shmida and O. Fragman Department of Evolution, Systematics and Ecology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel INTRODUCTION Darwin's (1859) statement ...

FIGURE 1. Diagnostic features of Allium therinanthum. A. Habit. B. Flowers. C. Perigone and stame... more FIGURE 1. Diagnostic features of Allium therinanthum. A. Habit. B. Flowers. C. Perigone and stamens open. D. Anther. E. Pistil. F. Capsule. Illustration by S. Brullo based on living material coming from type locality (CAT).

The sparsely distributed Limodorum abortivum is a European-Mediterranean orchi... more The sparsely distributed Limodorum abortivum is a European-Mediterranean orchid species, which grows on decomposing plant material. Although some chlorophyll-pigmentation is observed in the degenerated scales-shaped leaf and stems regions of the plant, its photosynthetic capacity is assumed to be insufficient to support the full energy requirements of an adult plant. In Israel, L. abortivum shows a patchy distribution patterns in the Galilee, Golan, Carmel and Judean regions. To gain more insights into the physiology and photosynthetic activity of L. abortivum, we analyzed the organellar morphologies, photosynthetic activities the chloroplast-DNA sequence by Illumina-HTS. Microscopic analyses indicated to the presence of mature chloroplasts with well-organized grana-thylakoids in the leaves and stems of L. abortivum. However, the numbers of chloroplasts per cell and the grana ultrastructure density within th...

Raw microsatellite data. The fragment sizes (in base pairs) of the two alleles per individual for... more Raw microsatellite data. The fragment sizes (in base pairs) of the two alleles per individual for each locus are given as a and b (0 represents missing data). (XLSX 38 kb)

FIGURE 3. Phylogenetic tree based on a combined ITS, ETS and rpl32–trnL spacer data set. Bayesian... more FIGURE 3. Phylogenetic tree based on a combined ITS, ETS and rpl32–trnL spacer data set. Bayesian posterior probabilities (PP) are given above branches, bootstrap support (BS) values over 50% from maximum parsimony analysis below branches.

FIGURE 5.Umbels and habitats of the species from the sect. Molium. A–C. Allium akirense (photos O... more FIGURE 5.Umbels and habitats of the species from the sect. Molium. A–C. Allium akirense (photos O. Hochberg). D. Sandstone hill near Kibbutz Giv'at-Brenner with A. akirense (photo N. Friesen). E. A. qasyunense (Western Golan Heights above Ein Gev). F–G. A. papillare (Western Negev, F—Sede Yitzhak, G—Halutza, photos O. Fragman-Sapir). H–I. A. longisepalum (Iran, H—photo Akhani; I—photo H. Razifard). J–K. A.negevense (Negev, K-Rachme Ridge). L–M. A. erdelii (North Negev – Goral Hills, photos O. Fragman-Sapir).

FIGURE 4. Chromosome complement (2n = 16) of Allium therinanthum. Mitotic metaphase plate from ty... more FIGURE 4. Chromosome complement (2n = 16) of Allium therinanthum. Mitotic metaphase plate from type locality (A), arrows indicates satellited chromosomes, and idiogram (B).

FIGURE 3. Leaf cross section of Allium therinanthum (A) and A. tardiflorum (B), from living mater... more FIGURE 3. Leaf cross section of Allium therinanthum (A) and A. tardiflorum (B), from living material coming from the type localities.

FIGURE 6. Chromosome complement (2n = 16) of Allium tardiflorum. Mitotic metaphase plate from typ... more FIGURE 6. Chromosome complement (2n = 16) of Allium tardiflorum. Mitotic metaphase plate from type locality (A), arrows indicates satellited chromosomes, and idiogram (B).

FIGURE 2. Inflorescence of Allium therinanthum (A). Bulbs of A. therinanthum (B). Inflorescence o... more FIGURE 2. Inflorescence of Allium therinanthum (A). Bulbs of A. therinanthum (B). Inflorescence of A. galileum (C). Inflorescence of A. tardiflorum (D). Photos by O. Fragman-Sapir (A, B) and G. Giusso del Galdo (C, D).

FIGURE 5. Diagnostic features of Allium tardiflorum. A. Habit. B. Flower. C. Perigone and stamens... more FIGURE 5. Diagnostic features of Allium tardiflorum. A. Habit. B. Flower. C. Perigone and stamens open. D. Anther. E. Pistil. F. Capsule. G. Spathe valves. Illustration by S. Brullo based on living material coming from type locality (CAT).

1. The 'habitat-specific species pool hypothesis' proposes that differences between habit... more 1. The 'habitat-specific species pool hypothesis' proposes that differences between habitats in the sizes of their species pools are the main drivers of diversity responses to habitat heterogeneity. Empirical tests of this hypothesis are not trivial since species might be missing from ecologically suitable habitats due to limited dispersal, while others may occur in unsuitable habitats by means of source-sink dynamics and mass effect. 2. We tested the habitat-specific species pool hypothesis in a local, environmentally heterogeneous community of annual plants using a novel 'ecological selection' experiment. Mixtures of seeds representing the whole community were sown in each habitat, and the emerging species were exposed to six generations of selection by environmental filtering and competition while being blocked from dispersal. A comparison of the total number of species that were able to survive in each habitat (i.e., to pass the selection test) with data on species richness in the natural community allowed us to test the degree to which observed differences in species richness between habitats could be explained by differences in the sizes of the respective species pools. 3. Results supported the species pool hypothesis, showing that differences in the sizes of the habitat-specific species pools were important in determining diversity responses to habitat heterogeneity. Moreover, species richness showed a unimodal response to local-scale gradients in habitat productivity, and this response could be attributed to underlying differences in species-pool sizes. Both results were robust to properties of the data and the method of analysis. 4. Synthesis. Our results provide a strong experimental evidence that differences in the sizes of habitat-specific species pools might be important in shaping the diversity of local communities. Future theoretical and empirical studies in community ecology should explore the potential sources and implications of such differences

ABSTRACT The list of unwanted alien ornamental plants in Israel is a tool being offered to landsc... more ABSTRACT The list of unwanted alien ornamental plants in Israel is a tool being offered to landscape architects, gardeners, environmentalists, ecologists, foresters and the general public. The list allows checking whether an alien plant species proposed for planting has a high invasive potential in Israel and may pose a threat to local ecosystems. The main objective of the list is to prevent the use of plants that might become invasive in natural ecosystems in Israel's various regions. Therefore the use of this list will help to preserve biodiversity in Israel's natural ecosystems of Israel. Alien taxa known as weeds only in cultivated areas are not included in the list since the main goal is protection of natural ecosystems.

Number of private alleles per locus in combinations of populations. A to D present values for the... more Number of private alleles per locus in combinations of populations. A to D present values for the combination of two to five populations (treating scions and suckers of old olive trees as populations). (PDF 217 kb)

Number of olive trees assigned to different multi-locus lineages (MLLs). (XLSX 18 kb)

Location of populations of naturally growing olives analyzed in this study and of groves of culti... more Location of populations of naturally growing olives analyzed in this study and of groves of cultivated old olive trees sampled in our previous study (Barazani et al. [33]). (PDF 79 kb)

… of Our World in the Wake …, 1996

Number of olive trees assigned to different multi-locus lineages (MLLs). (XLSX 18 kb)