Class information for:
Level 1: AMERICAN FERN JOURNAL//FERNS//PTERIDOPHYTES

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
2655 2183 37.7 33%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
3 4 PLANT SCIENCES//AGRONOMY//FOOD SCIENCE & TECHNOLOGY 1882812
69 3       PLANT SCIENCES//EVOLUTIONARY BIOLOGY//AMERICAN JOURNAL OF BOTANY 83717
2518 2             AMERICAN FERN JOURNAL//FERNS//PTERIDOPHYTES 3826
2655 1                   AMERICAN FERN JOURNAL//FERNS//PTERIDOPHYTES 2183

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 AMERICAN FERN JOURNAL journal 3675626 19% 62% 424
2 FERNS authKW 1256592 10% 41% 217
3 PTERIDOPHYTES authKW 654129 6% 37% 125
4 DRYOPTERIDACEAE authKW 610898 3% 70% 62
5 PRINGLE HERBARIUM address 517482 2% 100% 37
6 PTERIDOPHYTA authKW 444933 3% 45% 70
7 ELAPHOGLOSSUM authKW 395305 1% 91% 31
8 POLYPODIACEAE authKW 388086 3% 50% 56
9 PTERIDACEAE authKW 362021 2% 54% 48
10 UNIV HERBARIUM address 340070 3% 40% 61

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Plant Sciences 87098 86% 0% 1878
2 Evolutionary Biology 10990 15% 0% 329
3 Ecology 644 7% 0% 156
4 Biodiversity Conservation 223 2% 0% 39
5 Paleontology 112 1% 0% 25
6 Genetics & Heredity 100 4% 0% 94
7 Biology 74 2% 0% 52
8 Geography, Physical 16 1% 0% 16
9 Multidisciplinary Sciences 13 1% 0% 15
10 Forestry 10 1% 0% 15

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 PRINGLE HERBARIUM 517482 2% 100% 37
2 UNIV HERBARIUM 340070 3% 40% 61
3 CATEDRA PALINOL 288684 2% 61% 34
4 CATEDRA MORFOL VEGETAL 164418 1% 44% 27
5 ABT SYSTEMAT BOT 91018 1% 26% 25
6 BIOL VEGETAL 1 83927 2% 17% 35
7 SECAO BRIOL PTERIDOL 71926 0% 86% 6
8 HERBARIO MCNS 68527 0% 70% 7
9 ECOL FONDAMENTALE PL 55944 0% 100% 4
10 ABT BOT 49937 0% 36% 10

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 AMERICAN FERN JOURNAL 3675626 19% 62% 424
2 BRITTONIA 70347 4% 6% 88
3 SYSTEMATIC BOTANY 60236 4% 4% 98
4 ADANSONIA 30405 1% 9% 23
5 AMERICAN JOURNAL OF BOTANY 27290 5% 2% 119
6 BLUMEA 27048 2% 5% 40
7 PHYTOTAXA 26757 3% 3% 74
8 TAXON 19461 3% 2% 59
9 NEW ZEALAND JOURNAL OF BOTANY 18875 2% 3% 47
10 JOURNAL OF SYSTEMATICS AND EVOLUTION 18865 1% 5% 27

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 FERNS 1256592 10% 41% 217 Search FERNS Search FERNS
2 PTERIDOPHYTES 654129 6% 37% 125 Search PTERIDOPHYTES Search PTERIDOPHYTES
3 DRYOPTERIDACEAE 610898 3% 70% 62 Search DRYOPTERIDACEAE Search DRYOPTERIDACEAE
4 PTERIDOPHYTA 444933 3% 45% 70 Search PTERIDOPHYTA Search PTERIDOPHYTA
5 ELAPHOGLOSSUM 395305 1% 91% 31 Search ELAPHOGLOSSUM Search ELAPHOGLOSSUM
6 POLYPODIACEAE 388086 3% 50% 56 Search POLYPODIACEAE Search POLYPODIACEAE
7 PTERIDACEAE 362021 2% 54% 48 Search PTERIDACEAE Search PTERIDACEAE
8 FERN 336648 5% 24% 99 Search FERN Search FERN
9 POLYSTICHUM 318610 1% 84% 27 Search POLYSTICHUM Search POLYSTICHUM
10 ASPLENIUM 285948 1% 66% 31 Search ASPLENIUM Search ASPLENIUM

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref. in
cl.		 Shr. of ref. in
cl.		 Citations
1 SCHUETTPELZ, E , SCHNEIDER, H , SMITH, AR , HOVENKAMP, P , PRADO, J , ROUHAN, G , SALINO, A , SUNDUE, M , ALMEIDA, TE , PARRIS, B , ET AL (2016) A COMMUNITY-DERIVED CLASSIFICATION FOR EXTANT LYCOPHYTES AND FERNS.JOURNAL OF SYSTEMATICS AND EVOLUTION. VOL. 54. ISSUE 6. P. 563 -603 180 85% 0
2 CHRISTENHUSZ, MJM , ZHANG, XC , SCHNEIDER, H , (2011) A LINEAR SEQUENCE OF EXTANT FAMILIES AND GENERA OF LYCOPHYTES AND FERNS.PHYTOTAXA. VOL. 19. ISSUE . P. 7 -54 111 83% 148
3 ALMEIDA, TE , SALINO, A , (2016) STATE OF THE ART AND PERSPECTIVES ON NEOTROPICAL FERN AND LYCOPHYTE SYSTEMATICS.JOURNAL OF SYSTEMATICS AND EVOLUTION. VOL. 54. ISSUE 6. P. 679 -690 100 78% 1
4 SMITH, AR , PRYER, KM , SCHUETTPELZ, E , KORALL, P , SCHNEIDER, H , WOLF, PG , (2006) A CLASSIFICATION FOR EXTANT FERNS.TAXON. VOL. 55. ISSUE 3. P. 705 -731 71 79% 547
5 LIU, HM , (2016) EMBRACING THE PTERIDOPHYTE CLASSIFICATION OF REN-CHANG CHING USING A GENERIC PHYLOGENY OF CHINESE FERNS AND LYCOPHYTES.JOURNAL OF SYSTEMATICS AND EVOLUTION. VOL. 54. ISSUE 4. P. 307 -335 78 81% 1
6 SIGEL, EM , (2016) GENETIC AND GENOMIC ASPECTS OF HYBRIDIZATION IN FERNS.JOURNAL OF SYSTEMATICS AND EVOLUTION. VOL. 54. ISSUE 6. P. 638 -655 94 61% 1
7 CHRISTENHUSZ, MJM , CHASE, M , (2014) TRENDS AND CONCEPTS IN FERN CLASSIFICATION.ANNALS OF BOTANY. VOL. 113. ISSUE 4. P. 571 -594 54 89% 42
8 SCHUETTPELZ, E , PRYER, KM , (2007) FERN PHYLOGENY INFERRED FROM 400 LEPTOSPORANGIATE SPECIES AND THREE PLASTID GENES.TAXON. VOL. 56. ISSUE 4. P. 1037-1050 66 83% 182
9 XIANG, JY , WEN, J , PENG, H , (2015) EVOLUTION OF THE EASTERN ASIAN-NORTH AMERICAN BIOGEOGRAPHIC DISJUNCTIONS IN FERNS AND LYCOPHYTES.JOURNAL OF SYSTEMATICS AND EVOLUTION. VOL. 53. ISSUE 1. P. 2 -32 81 62% 7
10 LI, FW , BURGE, DO , SIGEL, EM , HUIET, L , LARSSON, A , RUHSAM, M , DEYHOLOS, M , SOLTIS, DE , STEWART, CN , SHAW, SW , ET AL (2015) THE EVOLUTIONARY HISTORY OF FERNS INFERRED FROM 25 LOW-COPY NUCLEAR GENES.AMERICAN JOURNAL OF BOTANY. VOL. 102. ISSUE 7. P. 1089 -1107 83 53% 10

Classes with closest relation at Level 1


Rank Class id link
1 17297 FERN GAMETOPHYTE//CERATOPTERIS//GAMETOPHYTE
2 25384 ISOETES//ISOETACEAE//QUILLWORT
3 35527 MT BANAHAW DE LUCBAN//HIGH RESOLUTION XRF ANALYSIS//AHP GDM MODE
4 17417 PTERIS SEMIPINNATA L//ADIANTACEAE//FARINOSE FROND EXUDATE
5 31088 NYBG P S//BRITTONIA//HERBARIUM TRINIDAD TOBAGO
6 14644 VASCULAR EPIPHYTES//EPIPHYTES//BROMELIACEAE
7 6273 BENNETTITALES//PALEOBOT//GINKGOALES
8 17323 AZOLLA//AZOLLA FILICULOIDES//MARSILEACEAE
9 20170 BRACKEN//PTAQUILOSIDE//PTERIDIUM AQUILINUM
10 6967 POLYPLOIDY//ALLOPOLYPLOIDY//AUTOPOLYPLOIDY

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