00338nas a2200109   4500008004100000245005500041210005400096300001200150490000700162100001500169856004400184       2013                        eng d00aIsoëtes aemulans, a new species from South Africa0 aIsoëtes aemulans a new species from South Africa  a218-2210 v431 aRoux, J.P.  uhttps://isoetes.myspecies.info/node/21001363nas a2200133   4500008004100000245009100041210006900132300001200201490000700213520085500220100002001075700001701095856011701112       2013                        eng d00aA new species of Isoetes with tuberculate spores from southeastern Brazil (Isoetaceae)0 anew species of Isoetes with tuberculate spores from southeastern  a869-8740 v383 aIsoetes quiririensis is described, illustrated, and compared to similar species. This species can be distinguished from other species in Brazil by a set of characters that include microphylls that are semi-cylindrical in cross section, velum covering more than 3/4 of the sporangium, tuberculate megaspores varying from 477-670 μm in diameter, echinate microspores, and a chromosome number of 2n = 22. We also include a key for species from the Atlantic Rainforest that have tuberculate megaspores, distribution maps, and spore images for all species that are discussed. Isoetes quiriensis is known only from the type locality, where it occurs as an aquatic in small streams at high elevations. We suggest it should be classified as a data deficient species based on the IUCN criteria. © Copyright 2013 by the American Society of Plant Taxonomists.1 aPereira, J.B.S.1 aLabiak, P.H.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84892771709&partnerID=40&md5=5330336025d70b7769a8178a24b91c8d01730nas a2200157   4500008004100000245012300041210006900164300001200233490000700245520115000252100001601402700001101418700001101429700001501440856011701455       2013                        eng d00aSpore seedling cultivation and care of young sporophyte seedling of extreme endangerous wetland plant isoetes sinensis0 aSpore seedling cultivation and care of young sporophyte seedling  a347-3510 v113 aThis paper cultured Isoetes sinensis which is national extreme endangered ferns, using soil and knop's substrate, sexual reproduction seedlings were obtained. The detailed process of every stage of young spore seedling happening and the gametophyte development were observed and recorded. The paper summarized artificial management technology of the young spore seedling. The regulation between the gametophyte development and environmental factors was analyzed, rejuvenation countermeasures of young spore seedling were defined, and category and control measures of pests were discussed. The results showed that the maturation rate of the Isoetes sinensis can reach 90.3%, under the condition of between 22 °C and 28 °C, the light intensity 60 umol/(m2,s), 14 hours light and 10 hours dark every day. The paper had completed the life history of Isoetes sinensis, and grasped the seedling and daily management method and had got 5 000 plants. They grew well and appeared the sporangium, in order to return to the country of origin, and provide certain theoretical basis and reliable technical support of wild population and wetland protection.1 aXing, J.-J.1 aLu, J.1 aLi, F.1 aLiu, B.-D.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84889665048&partnerID=40&md5=5430ea99534cabf8bb56775db41e4aaf02793nas a2200205   4500008004100000245012300041210006900164300001000233490000800243520209000251100001502341700001702356700001502373700001602388700001502404700001602419700001502435700002002450856011702470       2013                        eng d00aEstimating influence of environmental quality and management of channels on survival of a threatened endemic quillwort0 aEstimating influence of environmental quality and management of   a39-460 v1073 aIsoëtes malinverniana Ces. et De Not. is a narrow endemic quillwort occurring within channels used for rice fields water supply, in the lowland area of North Italy. The range of I. malinverniana is highly fragmented and in the last 10 years the whole population decreased by more than 80%. This strong decline is assumed to be mainly related to the intensification of agricultural practices, which led to decreasing water quality, alteration of flow regimes and mechanized management. In order to highlight which of these factors may affect population performance and fate (persistence vs. extinction) of the species, plant cover, density and leaf length were measured, and a range of water and sediment parameters were analyzed at the plot scale, within the extant populations and in eight historical sites where I. malinvarniana recently disappeared. At least 4 out of 11 populations, characterized by cover values never exceeding 15% and density hardly approaching 20plantsm-2, revealed scarce chance for survival, under current conditions. On the basis of discriminant analysis, nutrient enrichment did not result the main predictor of Isoëtes decline, as generally noticed for isoetids, since higher water nitrates, P, K and organic C content in the sediments were found in the sites where I. malinverniana showed the highest performance compared to sites of less viable populations. On the other hand, the high water depth, the strong increase of water flow during the rice growing season and the intensive mechanized management of channels, e.g. cutting of aquatic vegetation and dredging using excavators, were among the most important parameters explaining the disappearance of the species. Our findings may have useful implications for the conservation or restoration of I. malinverniana and other rare aquatic species occurring in running waters of lowland agricultural areas. Hydrological alterations and mechanized maintenance of channels should be restricted where the species still occurs, to improve population performance and seedling survival. © 2013 Elsevier B.V.1 aBarni, E.a1 aMinuzzo, C.a1 aGatto, F.a1 aLonati, M.b1 aAbeli, T.c1 aAmosso, C.c1 aRossi, G.c1 aSiniscalco, C.a  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84876420255&partnerID=40&md5=9994a9a8ad4ab2cf51c2cfe59bfdeda601952nas a2200181   4500008004100000245010800041210006900149300001200218490000700230520131800237100001901555700001501574700001501589700001601604700001501620700001801635856011701653       2013                        eng d00aMineral element uptake status of endemic Isoetes anatolica prada & Rolleri populations from Bolu-Turkey0 aMineral element uptake status of endemic Isoetes anatolica prada  a515-5190 v453 aIsoetes genus is commonly known as the "quillworts" and considered to be "fern allies". There are about 200-250 species, with a cosmopolitan distribution but often scarce to rare. Isoetes genus members often grow in extremely sensitive aquatic environments such as temporary ponds, streams and lakes. They are therefore good indicators of environmental quality. Isoetes anatolica Prada & Rolleri is an endemic plant grows on calcareous sediment/soil on the edges of seasonal ponds located in a mountainous area near the southern coast of the Black Sea at 1400 m above sea level at Bolu, Turkey. In this study, mineral element uptake statuses of I. anatolica populations were studied on the background of plant-sediment/soil-water interactions. The study materials were collected from the place where this narrow endemic species only lives in the world (Abant Region, Bolu/Turkey) by using standard methods and plant and sediment/soil mineral element measurements (Al, B, Ca, Cu, Fe, K, Mg, Mn, Na, Ni and Zn) were done. ICP-OES was employed for the measurements during the study. Interrelations between mineral element contents in the sediment/soil, water and plant were discussed. The data revealed that I. anatolica is capable of accumulating considerable amounts of certain mineral elements (B, Ca, Mn and Na).1 aOzyigit, I.I.a1 aDogan, I.b1 aEskin, B.a1 aKeskin, M.a1 aDemir, G.c1 aYalcin, I.E.c  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84873472883&partnerID=40&md5=f0b7e3ebc6bd41e008336dcca6a36ffe01183nas a2200133   4500008004100000245009400041210007100135300001400206490000800220520067200228100001400900700001800914856011700932       2013                        eng d00aIsoëtes sabatina (Isoëtaceae, Lycopodiophyta), a new aquatic species from central Italy0 aIsoëtes sabatina Isoëtaceae Lycopodiophyta a new aquatic species  a1052-10580 v1473 a<p>The new species Iso&euml;tes sabatina is described and illustrated. Morphological, anatomical, and ecological characters are given. It differs from the similar I. echinospora by several characters, such as megaspore ornamentation and size, microspore size, velum extension and form, and also for its ecology. A table showing the main differential characters of the new species compared with those of the other European aquatic species is presented. So far, the species is known from a single locality (Bracciano Lake, central Italy), having a peculiar ecology and within the Mediterranean bioclimate. &copy; 2013 &copy; 2013 Societ&agrave; Botanica Italiana.</p>
1 aTroia, A.1 aAzzella, M.M.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84880699237&partnerID=40&md5=930bbe9fe7a4ad1fcde7711bdfdb437d00599nas a2200181   4500008004100000245011400041210006900155300001200224490000600236100001900242700001900261700001800280700001900298700001700317700002000334700001900354856004400373       2013                        eng d00aHigh Frequency Sporophytes Regeneration from the Spore Culture of the Endangered Aquatic Fern Isoetes coreana0 aHigh Frequency Sporophytes Regeneration from the Spore Culture o  a14–200 v41 aOh, Myung, Jin1 aKim, Changkyun1 aNa, Hye, Ryun1 aShin, Hyunchur1 aLiu, Jang, R1 aChoi, Hong-Keun1 aKim, Suk, Weon  uhttps://isoetes.myspecies.info/node/18001018nas a2200193   4500008004100000245008600041210006900127300001200196490000700208520042600215653002400641653001400665653003400679100001800713700001300731700001800744700001800762856004400780       2013                        eng d00aNew Observation of Megaspore Morphological Characteristics in Isoetes yunguiensis0 aNew Observation of Megaspore Morphological Characteristics in Is  a271-2730 v333 a<p>New megaspore morphological characteristics of the protected plant&mdash;Isoetes yunguiensis were observed using scanning electron microscope (SEM). The result indicates: globular granule on megaspore surface; inapparent reticulate ornamentation; inapparent reticulate ornamentation with big size. Megaspore of the old ligulate heterosporophyte are easy to significantly change in size, ornamentaion and fissure.</p>
10aIsoetes yunguiensis10aMegaspore10amorphological characteristics1 aLI, Xiao-Dong1 aSUN, Hao1 aZHANG, Da-Wei1 aLIU, Bao-Dong  uhttps://isoetes.myspecies.info/node/18102034nas a2200253   4500008004100000245013900041210006900180260001200249300001200261490000700273520118700280653001701467653001401484653002201498653002301520653001401543653003301557100001401590700001401604700001501618700001401633700001601647856011701663       2013                        eng d00aGenetic diversity and population structure of the endangered alpine quillwort Isoetes hypsophila (Isoetaceae) revealed by SSR analysis0 aGenetic diversity and population structure of the endangered alp  c2013///  a11 - 200 v473 aIsoetes hypsophila Hand.-Mazz. (Isoetaceae) is an endangered alpine quillwort endemic to the Qinghai-Tibetan Plateau (QTP). A total of 247 individuals of I. hypsophila from 11 populations were analyzed using ten pairs simple sequence repeats (SSR) markers. Seventy-seven alleles were recorded, with an average of 7.7 alleles per locus (ranging from 3 to 12) and the expected heterozygosity (HE) ranged from 0.392 to 0.536 (average 0.471). Clear population structure among I. hypsophila populations was found and the proportion of genetic differentiation among populations accounted for about 20% of total genetic diversity (FST = 0.178; probability of allelic co-ancestory Fcoal = 0.238). This genetic structure was probably due to limited gene flow hindered by complex terrains, bottlenecks resulting from water fluctuation in habitats, and repeated population retreat and recolonization during the ice ages. In conservation, four management units corresponding to four geographic regions were suggested, and the populations from different management units with higher genetic variation should be the priority targets of both in situ and ex situ conservation. © 2012 Elsevier Ltd.10aConservation10aGene flow10aGenetic structure10aIsoetes hypsophila10aQuillwort10aSimple sequence repeat (SSR)1 aLi, X.-L.1 aLi, S.-C.1 aChu, H.-J.1 aLi, Z.-Z.1 aChen, Y.-Y.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84875089755&partnerID=40&md5=c1cc33debe532b0ac82fdd9916012f9502687nas a2200217   4500008004100000245016500041210006900206260001200275300001400287490000700301520190900308653001702217653001202234653002302246653002302269653001502292653001302307100001602320700001602336856011702352       2013                        eng d00aSensitivity of ephemeral wetland swards with Isoetes histrix Bory to environmental variables: Implications for the conservation of Mediterranean temporary ponds0 aSensitivity of ephemeral wetland swards with Isoetes histrix Bor  c2013///  a277 - 2900 v233 aSmall-scale landscape elements such as freshwater ponds and pools remain poorly characterized and vulnerable to destruction, despite their significant contribution to regional aquatic biodiversity. Ephemeral wetland swards supporting Isoetes histrix, which are considered priority interest habitats by the European Habitats Directive on the conservation of wild fauna and flora (codex 3170* - Mediterranean temporary ponds), typify concave pond shorelines (Habitat A) and very shallow flat temporary ponds (Habitat B). It is hypothesized that although this sward type is highly specialized for growth in waterlogged soils, it is highly sensitive to changes in composition and seasonal dynamics related to varied environmental conditions. The present study was aimed at comparing plant assemblages, and successional processes and dynamics during the growing season between different habitat types; and identifying the key factors influencing spatial variability. Vegetation was sampled three times during the growing season in the two habitat types (i.e A and B). At each site a range of environmental variables was also recorded. PERMANOVA analysis indicated that plant assemblages differed between the two habitat types throughout the growing season. The different hydroperiod length was the main factor responsible for the specificity of the two habitats, revealed by CCA. However, the pattern of successional processes and seasonal dynamics was similar between the two habitats. The results confirmed the hypothesis, and strengthened the understanding of the relevance of hydroperiod length to plant assemblages in ephemeral ponds. The two habitats exhibit unique characteristics, and represent different aspects of priority habitat 3170*; therefore, to ensure that the highest level of biodiversity is maintained, measures must be taken to protect both sward habitats. © 2012 John Wiley & Sons, Ltd.10aBiodiversity10aDrought10aHabitat management10aHabitats directive10aVegetation10aWetlands1 aBagella, S.1 aCaria, M.C.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84876416806&partnerID=40&md5=33df98f00634e6a39ea2b422ff6f78de01972nas a2200193   4500008004100000245010800041210006900149260001200218300001400230490000700244520131800251100001801569700001401587700001401601700001501615700001401630700001701644856011701661       2013                        eng d00aMineral element uptake status of endemic Isoetes anatolica prada & Rolleri populations from Bolu-Turkey0 aMineral element uptake status of endemic Isoetes anatolica prada  c2013///  a515 - 5190 v453 aIsoetes genus is commonly known as the "quillworts" and considered to be "fern allies". There are about 200-250 species, with a cosmopolitan distribution but often scarce to rare. Isoetes genus members often grow in extremely sensitive aquatic environments such as temporary ponds, streams and lakes. They are therefore good indicators of environmental quality. Isoetes anatolica Prada & Rolleri is an endemic plant grows on calcareous sediment/soil on the edges of seasonal ponds located in a mountainous area near the southern coast of the Black Sea at 1400 m above sea level at Bolu, Turkey. In this study, mineral element uptake statuses of I. anatolica populations were studied on the background of plant-sediment/soil-water interactions. The study materials were collected from the place where this narrow endemic species only lives in the world (Abant Region, Bolu/Turkey) by using standard methods and plant and sediment/soil mineral element measurements (Al, B, Ca, Cu, Fe, K, Mg, Mn, Na, Ni and Zn) were done. ICP-OES was employed for the measurements during the study. Interrelations between mineral element contents in the sediment/soil, water and plant were discussed. The data revealed that I. anatolica is capable of accumulating considerable amounts of certain mineral elements (B, Ca, Mn and Na).1 aOzyigit, I.I.1 aDogan, I.1 aEskin, B.1 aKeskin, M.1 aDemir, G.1 aYalcin, I.E.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84873472883&partnerID=40&md5=f0b7e3ebc6bd41e008336dcca6a36ffe02304nas a2200217   4500008004100000245013900041210006900180260001200249300001400261490000700275520155100282653001701833653002401850653001601874653002101890653001201911100001401923700001501937700001701952856011701969       2013                        eng d00aAssociation of water depth and aquatic-plant competition in conservation of Isoetes taiwanensis in the Menghuan Pond wetland in Taiwan0 aAssociation of water depth and aquaticplant competition in conse  c2013///  a513 - 5190 v113 aIsoetes taiwanensis DeVol, discovered in 1971, is a critically endangered aquatic plant endemic to Taiwan. The only natural habitat of I. taiwanensis is the Menghuan Pond wetland in northern Taiwan. With competition of some aquatic plants and terrestrial plants, I. taiwanensis was close to extinction in 2006. The bottom of the Menghuan Pond wetland was compacted and fractures were filled along the shore to improve the average water depth in 2008. The I. taiwanensis population was restored, but factors crucial to its survival remain unclear. To analyze the factors, we monitored 24 plots in the Menghuan Pond wetland monthly from January to December 2010 to record the coverage rates of potential competitive plant species and hydrology data. The wetland was found to be an ideal environment for growth of I. taiwanensis with annual mean water depth 50 cm. The species did not grow in plots with annual mean water depth lower than 30 cm. The species had an advantage over other species in plots with annual mean water depth 46. 8-185. 6 cm. The coverage rate of I. taiwanensis was positively associated with annual mean water depth. With the deepest annual mean water level, >60 cm, more than 90 % of the area was covered. Fluctuation of the water level may reduce the competition among I. taiwanensis and other species, particularly Eleocharis congesta, E. dulcis, and Schoenoplectus mucronatus. These data may help in designing a protocol for sustained conservation of I. taiwanensis in Yangmingshan National Park. © 2012 Springer-Verlag.10aConservation10aIsoetes taiwanensis10aWater depth10aWater management10aWetland1 aYu, Y.-T.1 aLur, H.-S.1 aChang, W.-L.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84871716979&partnerID=40&md5=30e8414c46141d508456972e1b279466