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Journal of Nannoplankton Research最新文献

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Age conversion table for different time scales. 不同时间尺度的年龄转换表。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2269
W. Wei
{"title":"Age conversion table for different time scales.","authors":"W. Wei","doi":"10.58998/jnr2269","DOIUrl":"https://doi.org/10.58998/jnr2269","url":null,"abstract":"","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121930950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A guide to extant coccolithophores (Calcihaptophycidae, Haptophyta) using light microscopy. 现存球石藻(钙化球石藻科，球石藻门)光学显微镜指南。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2094
M. Frada, J. Young, M. Cachão, Sílvia P. P. Lino, Ana Martins, Á. Narciso, I. Probert, C. Vargas
{"title":"A guide to extant coccolithophores (Calcihaptophycidae, Haptophyta) using light microscopy.","authors":"M. Frada, J. Young, M. Cachão, Sílvia P. P. Lino, Ana Martins, Á. Narciso, I. Probert, C. Vargas","doi":"10.58998/jnr2094","DOIUrl":"https://doi.org/10.58998/jnr2094","url":null,"abstract":"We present here a collection of light microscope, and comparative scanning electron microscope, images of extant coccolithophores, sampled from various oceanic locations, and also from cultured strains. This series of images is intended to provide students and researchers interested in extant coccolithophore biology with an accessible means of identifying the common coccolithophore species found in modern assemblages.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116846404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 37
Effect of elevated nitrate concentration on calcification in Emiliania huxleyi. 硝酸盐浓度升高对赫胥黎emiliia钙化的影响。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2158
G. Langer, Ina Benner
{"title":"Effect of elevated nitrate concentration on calcification in Emiliania huxleyi.","authors":"G. Langer, Ina Benner","doi":"10.58998/jnr2158","DOIUrl":"https://doi.org/10.58998/jnr2158","url":null,"abstract":"A monoclonal culture of Emiliania huxleyi (PML92/11) was grown in natural sea-water under varying nitrate concentrations, ranging from 10 to 890μmol L -1 . Growth rate, calcification rate, particulate organic carbon pro- duction, particulate organic nitrogen production, and the ratio of aberrant coccoliths to normal coccoliths were deter- mined. None of these parameters showed a trend over the range of nitrate concentrations tested. It is concluded that high nitrate concentrations, typical for culture media like f/2, do not affect morphogenesis of coccoliths, nor do they affect the production of particulate organic carbon or nitrogen in this strain.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127038494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
An unusual coccolithophorid (Haptophyta) specimen from Puerto Rico. 波多黎各发现的一种不寻常的球石虫标本。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2135
R. Jordan, Am os Winterf
{"title":"An unusual coccolithophorid (Haptophyta) specimen from Puerto Rico.","authors":"R. Jordan, Am os Winterf","doi":"10.58998/jnr2135","DOIUrl":"https://doi.org/10.58998/jnr2135","url":null,"abstract":"Abslraci:During routine phytoplankton counting of offshore Puerto Rican samples, an unusual spec imen of Calcioso /enia murrayi Gran was encountered. C. murrayi typicall y has monomorphic body-cocco liths, but the new specimen bore several types of body-coccolith : at least two types of rhombolith, and a narrow, elliptical coccolith new to sc ience. This latter type is not rhombic like the others, but shares several rhombolith features. However, it dilfcrs by being longer, relatively flattent:d, slight ly twisted, and with distally-pointed ends. Although it is poss ib le th at the s ingle specimen rcprest:nts a coccospherc composed mainl y of ma lformed coccol iths, it is sugges ted here that the new coccolith type may be evidence of an alternate phase. As thousands of onl y rhombolith-bearing coccospheres have been previously observed by coccolithophorid workers, this new coccolith type may be produced for only a short duration.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127298664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Distribution of calcareous nannofossils in the sparopel layers of hole 69-2SL, Meteor cruise 40/4, Eastern Mediterranean Sea. 东地中海流星巡航40/4号69-2SL孔稀疏层中钙质纳米化石的分布
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2096
D. Frydas, Christoph Hemlebent, Spyridōn, Bellas
{"title":"Distribution of calcareous nannofossils in the sparopel layers of hole 69-2SL, Meteor cruise 40/4, Eastern Mediterranean Sea.","authors":"D. Frydas, Christoph Hemlebent, Spyridōn, Bellas","doi":"10.58998/jnr2096","DOIUrl":"https://doi.org/10.58998/jnr2096","url":null,"abstract":"Calcareous nannoplankton associations from the sapropel layers of the gravity core M40/4, Station 69-2L, south-eastern Mediterranean Sea, have been examined. The investigated core mainly consists of nannofossil-/foraminifera-bearing mud, sapropel layers SI to SS/6 (except S2), and tephra layers. A subtropical coccolitb association was recognised in sapropels SI, S4, SS, SS/6, while a temperate one characterises S3. A reversal in dominance between Gephyrompse< muelleme and Emilie<nie< huxleyi was observed in sapropel S3 at 256cm subdepth. A significantly lower coccolith diversity was observed in the sapropel and tephra layers themselves, as in the foraminiferal mud, probably because of the influence of anoxic conditions, including bacterial activity, or ash-falls on the coccolith assemblages. In addition, a moderate to intensive corrosion characterises the nannofossils in the bioturbated upper part of some sapropels.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126973480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Surface sediment distribution of Florisphaera profunda in the South China Sea: an effect of dissolution? 南海深花藻表层沉积物分布:溶蚀作用的影响?
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2089
A. Fernando, A. Peleo-Alampay, E. Lucero, M. Wiesner
{"title":"Surface sediment distribution of Florisphaera profunda in the South China Sea: an effect of dissolution?","authors":"A. Fernando, A. Peleo-Alampay, E. Lucero, M. Wiesner","doi":"10.58998/jnr2089","DOIUrl":"https://doi.org/10.58998/jnr2089","url":null,"abstract":"Calcareous nannofossil assemblages in the surface sediments of the South China Sea (SCS), at depths >200m, are dominated by Florisphaera profunda, with abundance values ranging from 32-95%. Towards the central (abyssal) portion of the SCS, at depths below the inferred lysocline and the calcite compensation depth, F. profunda abundance values in the surface sediments reach >80%. An experiment, involving the use of an acidic solution in the preparation of smear-slides, showed an apparent increase in F. profunda abundance relative to the other taxa present in the original sample. F. profunda, therefore, is herein proposed as a dissolution-resistant species.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130676163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Validation of Helicopontosphaera inversa.
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/nina2099
S. Gartner
{"title":"Validation of Helicopontosphaera inversa.","authors":"S. Gartner","doi":"10.58998/nina2099","DOIUrl":"https://doi.org/10.58998/nina2099","url":null,"abstract":"","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130911865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New Early Miocene species of Sphenolithus Deflandre, 1952 from the North Atlantic Ocean. 北大西洋早中新世Sphenolithus Deflandre新种，1952。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2168
P. Maiorano, S. Monechi
{"title":"New Early Miocene species of Sphenolithus Deflandre, 1952 from the North Atlantic Ocean.","authors":"P. Maiorano, S. Monechi","doi":"10.58998/jnr2168","DOIUrl":"https://doi.org/10.58998/jnr2168","url":null,"abstract":"","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127620576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
INA16 abstracts Athens, Greece. INA16抽象希腊雅典。
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2049
L. (. ). Bybell
{"title":"INA16 abstracts Athens, Greece.","authors":"L. (. ). Bybell","doi":"10.58998/jnr2049","DOIUrl":"https://doi.org/10.58998/jnr2049","url":null,"abstract":"","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125574069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calcareous nannofossil biostratigraphy of the Upper Cretaceous–Lower Paleocene sequence of the Deramazan section, Sulaimani area, Kurdistan region of NE Iraq. 伊拉克东北部库尔德斯坦地区苏莱曼尼地区Deramazan剖面上白垩统—下古新统钙质纳米化石生物地层学
Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2145
S. Kharajiany, B. Al-Qayim, Jr Sherwood W. Wise
{"title":"Calcareous nannofossil biostratigraphy of the Upper Cretaceous–Lower Paleocene sequence of the Deramazan section, Sulaimani area, Kurdistan region of NE Iraq.","authors":"S. Kharajiany, B. Al-Qayim, Jr Sherwood W. Wise","doi":"10.58998/jnr2145","DOIUrl":"https://doi.org/10.58998/jnr2145","url":null,"abstract":"The nature of the Cretaceous–Palaeogene boundary in the Kurdistan region of NE Iraq is still under debate. Most studies have considered the Danian sediments to be mostly missing. Another hypothesis suggests that a conglomerate represents the contact between the Cretaceous and Paleogene. We examined the boundary succession of the Deramazan section in the Sulaimani area (NE Iraq) in order to determine the calcareous nannofossil assemblages and address the biostratigraphy around the boundary. The rock strata in the studied section are characterised by alternations of olive-green to greenish-grey sandstone, siltstone, shale and marlstone interlayers in both the Tanjero (Upper Campanian–Maastrichtian) and overlying Kolosh (Paleocene–Lower Eocene) Formations. The upper part of the section includes a thick conglomerate bed. We found that deposition across the boundary was essentially continuous, with no discernible break in sedimentation. The base of Zone NP1 (base of the Kolosh Formation) was identified by the bases of Biantholithus sparsus , Cruciplacolithus spp. and Coccolithus pelagicus , plus an acme of Cervisiella operculata , which seems to indicate no hiatus. There is some reworking of Cretaceous taxa above the boundary, into NP1 and NP2. The relative abundances of the nannofossil assemblages across the boundary reflect a productive ma - rine environment","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114180988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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