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1.

001-es BibID:BIBFORM073658
035-os BibID:(WoS)000434230700005 (Scopus)85047522713
Első szerző:Bartel, Riley D.
Cím:Endozoochory by mallard in New Zealand: what seeds are dispersed and how far? / Riley D. Bartel, Jennifer L. Sheppard, Lovas-Kiss Ádám, Andy J. Green
Dátum:2018
ISSN:2167-8359
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:PeerJ. - 6 (2018), p. 1-19. -
További szerzők:Sheppard, Jennifer L. Lovas-Kiss Ádám (1991-) (biológus, botanikus) Green, Andy J.
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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2.

001-es BibID:BIBFORM066319
035-os BibID:(cikkazonosító)e2893 (PMID)28168103 (PMCID)PMC5289109 (WoS)000394708800002 (Scopus)85013213389
Első szerző:Bateman, Richard M.
Cím:In situ morphometric survey elucidates the evolutionary systematics of the Eurasian Himantoglossum clade (Orchidaceae: Orchidinae) / Richard M. Bateman, Attila Molnár V., Gabór Sramkó
Dátum:2016
ISSN:2167-8359
Megjegyzések:Background and Aims. The charismatic Himantoglossum s.l. clade of Eurasian orchids contains an unusually large proportion of taxa that are of controversial circumscriptions and considerable conservation concern. Whereas our previously published study addressed the molecular phylogenetics and phylogeography of every named taxon within the clade, here we use detailed morphometric data obtained from the same populations to compare genotypes with associated phenotypes, in order to better explore taxonomic circumscription and character evolution within the clade. Methods. Between one and 12 plants found in 25 populations that encompassed the entire distribution of the Himantoglossum s.l. clade were measured in situ for 51 morphological characters. Results for 45 of those characters were subjected to detailed multivariate and univariate analyses.Key Results. Multivariate analyses readily separate subgenus Barlia and subgenus Comperia from subgenus Himantoglossum, and also the early-divergent H. formosum from the less divergent remainder of subgenus Himantoglossum. The sequence of divergence of these four lineages is confidently resolved. Our experimental approach to morphometric character analysis demonstrates clearly that phenotypic evolution within Himantoglossum is unusually multi-dimensional. Conclusions. Degrees of divergence between taxa shown by morphological analyses approximate those previously shown using molecular analyses. Himantoglossum s.l. is readily divisible into three subgenera. The three sections of subgenus Himantoglossum?hircinum, caprinum and formosum?are arrayed from west to east with only limited geographical overlap. At this taxonomic level, their juxtaposition combines with conflict between contrasting datasets to complicate attempts to distinguish between clinal variation and the discontinuities that by definition separate bona fide species. All taxa achieve allogamy via food deceit and have only weak pollinator specificity. Artificial crossing demonstrates that intrinsic sterility barriers are weak. Although we have found evidence of gene flow among and within the three sections of subgenus Himantoglossum, reports of natural hybrids are surprisingly rare, probably because putative parents are sufficiently similar to questionably warrant the status of species. Phenological separation and increased xeromorphy characterise the origin of subgenus Barlia. Several individual morphological characters show evidence of parallel acquisition, and loss of features is especially frequent in floral markings among members of section caprinum. Detailed patterns of gain and loss demonstrate that several different categories of flower markings are inherited independently. Along with the dimensions of labellar lobes, these pigmentation characters have been over- emphasised in previous taxonomic treatments. Increased plant vigour was a crucial element of the origin of the genus, but vegetative characters underwent remarkably little subsequent evolution. Attempts to reconstruct hypothetical ancestors at internal nodes of the phylogeny are weakened by (a) uncertain placement of Steveniella as sister to Himantoglossum s.l. and (b) uncertain relationships among subtly different putative species within section caprinum. Nonetheless, heterochronic/ allometric trends, ultimately limited by functional constraints, clearly dictate transitions between contrasting flower sizes and complex labellum shapes.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Barlia
Comperia
Disparity
Functional Constraints
Heterochrony
Himantoglossum
Hybridisation
Molecular Phylogeny
Morphometrics
Orchid
Parallelism
Speciation
Megjelenés:PeerJ. - 5 (2016), p. 1-83. -
További szerzők:Molnár V. Attila (1969-) (biológus, botanikus) Sramkó Gábor (1981-) (biológus)
Pályázati támogatás:K108992
OTKA
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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3.

001-es BibID:BIBFORM104477
035-os BibID:(WoS)000837155300003 (Scopus)85136153178 (cikkazonosító)e13660
Első szerző:Fülöp Attila (biológus)
Cím:Fighting ability, personality and melanin signalling in free-living Eurasian tree sparrows (Passer montanus) / Attila Fülöp, Zoltán Németh, Bianka Kocsis, Bettina Deák-Molnár, Tímea Bozsoky, Gabriella Csöppü, Zoltán Barta
Dátum:2022
ISSN:2167-8359
Megjegyzések:Background Individuals' access to resources is often decided during dyadic contests the outcome of which is determined by the fighting (or competitive) ability of the participants. Individuals' fighting ability (termed also as resource-holding power or potential, RHP) is usually associated with individual features (e.g., sex, age, body size) and is also frequently signalled through various ornaments like the black throat patch (bib) in many birds. Individual personality is a behavioural attribute often linked to fighting ability as well. Based on earlier studies, however, the relationship between personality and fighting ability is far from being straightforward. While accounting for sex and body size, we studied whether exploratory behaviour, an aspect of personality, predicts fighting ability when competing for food during winter in free-living Eurasian tree sparrows (Passer montanus). We also investigated whether the bib can serve as a potential indicator of individual competitiveness in this species. Methods We captured adult tree sparrows, marked them with a unique combination of colour rings, and collected data about the individuals' sex, body size, bib size and exploratory behaviour. Birds were then released and the agonistic behaviour of the marked individuals was recorded while foraging in groups on bird feeding platforms. Results The probability of winning a fight, a proxy for fighting ability of individuals, was not related to exploratory behaviour, in either of the sexes. However, bib size was positively related to probability of winning in females, but not in males. Body size was not associated with probability of winning neither in males, nor in females. Conclusions Our results suggest that, at least in tree sparrows, the outcome of dyadic encounters over food during the non-breeding period are not determined by the exploratory personality of individuals. However, our findings provide further support for a status signalling role of the black bib in tree sparrows, and hint for the first time that bib size might function as a status signal in females as well. Finally, our results do not confirm that body size could serve as an indicator of fighting ability (i.e., RHP) in this species.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Competition
Contest
Resource-holding potential
Exploratory behaviour
Sex differences
Badge of status
Passer montanus
Megjelenés:PeerJ. - 10 (2022), p. 1-24. -
További szerzők:Németh Zoltán (1976-) (biológus) Kocsis Bianka Deák-Molnár Bettina Bozsoky Tímea Csöppü Gabriella Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:OTKA-112527
OTKA
EFOP-3.6.1-16-2016-00022
EFOP
TKP2020-IKA-04
Egyéb
MAEO 2021-22/166661
Egyéb
FK124414
OTKA
János Bolyai Research Scholarship
MTA
ÚNKP-21-5
Egyéb
Magyar Vidékért (Pro Regione) Alapítvány
Egyéb
MTA-DE
MTA
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4.

001-es BibID:BIBFORM107999
035-os BibID:(Cikkazonosító)e877 (WoS)000352300500003 (Scopus)84926501135
Első szerző:Lendvai Ádám Zoltán (biológus)
Cím:Low cost audiovisual playback and recording triggered by radio frequency identification using Raspberry Pi / Lendvai, Ádám Z., Çağlar Akçay, Weiss, Talia, Haussmann, Mark F., Moore, Ignacio T., Bonier, Frances
Dátum:2015
ISSN:2167-8359
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:PeerJ. - 3 (2015), p.1-11. -
További szerzők:Akcay, Caglar Weiss, Talia Haussmann, Mark F. Moore, Ignacio T. Bonier, Frances
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Intézményi repozitóriumban (DEA) tárolt változat
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5.

001-es BibID:BIBFORM083218
035-os BibID:(cikkazonosító)e1473 (WoS)000366413000004 (Scopus)84951164165
Első szerző:Molnár V. Attila (biológus, botanikus)
Cím:Flood induced phenotypic plasticity in amphibious genus Elatine (Elatinaceae) / Attila Molnár V., János Pál Tóth, Gábor Sramkó, Orsolya Horváth, Agnieszka Popiela, Attila Mesterházy, Balázs András Lukács
Dátum:2015
ISSN:2167-8359
Megjegyzések:Vegetative characters are widely used in the taxonomy of the amphibious genus Elatine L. However, these usually show great variation not just between species but between their aquatic and terrestrial forms. In the present study we examine the variation of seed and vegetative characters in nine Elatine species (E. brachysperma, E. californica, E. gussonei, E. hexandra, E. hungarica, E. hydropiper, E. macropoda , E. orthosperma and E. triandra) to reveal the extension of plasticity induced by the amphibious environment, and to test character reliability for species identification. Cultivated plant clones were kept under controlled conditions exposed to either aquatic or terrestrial environmental conditions. Six vegetative characters (length of stem, length of internodium, length of lamina, width of lamina, length of petioles, length of pedicel) and four seed characters (curvature, number of pits / lateral row, 1st and 2nd dimension) were measured on 50 fruiting stems of the aquatic and on 50 stems of the terrestrial form of the same clone. MDA, NPMANOVA Random Forest classification and cluster analysis were used to unravel the morphological differences between aquatic and terrestrial forms. The results of MDA cross-validated and Random Forest classification clearly indicated that only seed traits are stable within species (i.e., different forms of the same species keep similar morphology). Consequently, only seed morphology is valuable for taxonomic purposes since vegetative traits are highly influenced by environmental factors.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Adaptation
Macrophyte
Seed-morphology
Cultivation experiments
Seed characters
Vegetative characteristics
Water depth
Wetland ephemerophytes
Morphological variability
Megjelenés:PeerJ. - 3 (2015), p. 1-23. -
További szerzők:Tóth János Pál (1981-) Sramkó Gábor (1981-) (biológus) Horváth Orsolya Popiela, Agnieszka Mesterházy Attila Lukács Balázs András (1979-) (ökológus)
Pályázati támogatás:TÁMOP-4.2.4.A/2-11/1-2012-0001
TÁMOP
TÁMOP-4.2.2B-15/1/KONV-2015-0001
TÁMOP
OTKA-108992
OTKA
OTKA-109686
OTKA
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Intézményi repozitóriumban (DEA) tárolt változat
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6.

001-es BibID:BIBFORM079614
035-os BibID:(cikkazonosító)e4047 (PMID)29201562 (PMCID)PMC5710163 (WoS)000416519100001 (Scopus)85035315063
Első szerző:Nagy Nikoletta Andrea (biológus)
Cím:Evaluation of potential reference genes for real-time qPCR analysis in a biparental beetle, Lethrus apterus (Coleoptera: Geotrupidae) / Nikoletta A. Nagy, Zoltán Németh, Edit Juhász, Szilárd Póliska, Rita Rácz, András Kosztolányi, Zoltán Barta
Dátum:2017
ISSN:2167-8359
Megjegyzések: Hormones play an important role in the regulation of physiological, developmental and behavioural processes. Many of these mechanisms in insects, however, are still not well understood. One way to investigate hormonal regulation is to analyse gene expression patterns of hormones and their receptors by real-time quantitative polymerase chain reaction (RT-qPCR). This method, however, requires stably expressed reference genes for normalisation. In the present study, we evaluated 11 candidate housekeeping genes as reference genes in samples of Lethrus apterus, an earth-boring beetle with biparental care, collected from a natural population. For identifying the most stable genes we used the following computational methods: geNorm, NormFinder, BestKeeper, comparative delta Ct method and RefFinder. Based on our results, the two body regions sampled (head and thorax) differ in which genes are most stably expressed. We identified two candidate reference genes for each region investigated: ribosomal protein L7A and RP18 in samples extracted from the head, and ribosomal protein L7A and RP4 extracted from the muscles of the thorax. Additionally, L7A and RP18 appear to be the best reference genes for normalisation in all samples irrespective of body region. These reference genes can be used to study the hormonal regulation of reproduction and parental care in Lethrus apterus in the future.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Insect
Parental care
Housekeeping gene
Megjelenés:PeerJ. - 5 (2017), p. 1-16. -
További szerzők:Németh Zoltán (1976-) (biológus) Juhász Edit Póliska Szilárd (1978-) (biológus) Rácz Rita (1989-) (biológus) Kosztolányi András (1971-) (biológus) Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:NKFIH K112670
egyéb
NKFIH K112527
egyéb
EFOP-3.6.1-16-2016-00022
EFOP
NKFIH PD121013
egyéb
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Intézményi repozitóriumban (DEA) tárolt változat
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7.

001-es BibID:BIBFORM079626
035-os BibID:(cikkazonosító)e3399 (PMID)28584724 (PMCID)PMC5455294 (WoS)000402560400009 (Scopus)85019676830
Első szerző:Popiela, Agnieszka
Cím:Seed morphometric characteristics of European species of Elatine (Elatinaceae) / Agnieszka Popiela, Andrzej Łysko, Bożenna Białecka, Magdalena Marta Bihun, Gábor Sramkó, Waldemar Staroń, Anetta Wieczorek, Attila Molnár V.
Dátum:2017
ISSN:2167-8359
Megjegyzések:Elatine L. contains ca. 25 small, herbaceous, annual species distributed in ephemeral waters in both hemispheres. All species are amphibious and characterized by a high degree of morphological variability. The importance of seed morphology in Elatine taxonomy has been emphasized by many authors. The degree of seed curvature and seed coat reticulation have been traditionally considered very important in recognizing individual species of this genus. Seed morphometric characteristics of 10 Elatine species, including all European native taxa, are provided on the basis of material from two or three populations of each species. A total of 24?50 seeds were studied from each population, altogether 1,260 images were used for the morphometric study. In total, six parameters were measured from SEM pictures: object surface area, profile specific perimeter (object circuit), rectangle of the object (a) length, rectangle of the object (b) width, angle of the seed curvature, and number of pits in the seed coat counted in the middle row. Our study shows that the range of morphological variation of seeds in European species of Elatine is great, both between the species and the populations. Discrimination analysis showed that all six traits significantly differentiate the populations studied (? = 0.001, p < 0.001), and the greatest contributions were ♭♭number of pits'', ♭♭rectangle_a'', and ♭♭the angle curvature''. Multidimensional scaling based on a correlation matrix of Mahalanobis distance of the six features studied revealed the greatest similarity between the three populations of E. alsinastrum, E. macropoda, and E. hexandra. Regarding interspecific differences, a Kruskal?Wallis tests showed that, in many cases, lack of statistically significant differences between species relative to the studied seed traits. If distinction of species is only based on seeds, especially if only a few seeds are evaluated, the following species pairs can be easily confused: E. alsinastrum and E. orthosperma, E. hexandra and E. macropoda, E. campylosperma and E. hydropiper, as well and E. gussonei and E. hungarica. We found no diversity in seed coat micromorphology within pits that could have potential taxonomic importance. An identification key and descriptions of species are provided on the basis of seeds traits.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Determination key
Ephemerals
Amphibious species
Seed coat
Morphology
Malphigiales
SEM
Micromorphology
Seeds traits
Megjelenés:PeerJ. - 5 (2017), p. 1-25. -
További szerzők:Łysko, Andrzej Białecka, Bożenna Bihun, Magdalena Marta Sramkó Gábor (1981-) (biológus) Staroń, Waldemar Wieczorek, Anetta Molnár V. Attila (1969-) (biológus, botanikus)
Pályázati támogatás:OTKA K108992
OTKA
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Intézményi repozitóriumban (DEA) tárolt változat
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8.

001-es BibID:BIBFORM086278
035-os BibID:(cikkazonosító)e7475 (WoS)000491858000001 (Scopus)85074138748
Első szerző:Rádai Zoltán (biológus)
Cím:Antibacterial immune functions of subadults and adults in a semelparous spider / Rádai Zoltán, Kiss Péter, Nagy Dávid, Barta Zoltán
Dátum:2019
ISSN:2167-8359
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:PeerJ. - 7 (2019), p. 1-23. -
További szerzők:Kiss Péter Nagy Dávid Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:EFOP-3.6.1-16-2016-00022
EFOP
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Intézményi repozitóriumban (DEA) tárolt változat
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9.

001-es BibID:BIBFORM066223
035-os BibID:(cikkazonosító)e2800 (PMID)28028470 (PMCID)PMC5180590 (WoS)000390663600007 (Scopus)85007285369
Első szerző:Sramkó Gábor (biológus)
Cím:Molecular phylogenetics, seed morphometrics, chromosome number evolution and systematics of European Elatine L. (Elatinaceae) species / Gábor Sramkó, Attila Molnár V., János Pál Tóth, Levente Laczkó, Anna Kalinka, Orsolya Horváth, Lidia Skuza, Balázs András Lukács, Agnieszka Popiela
Dátum:2016
ISSN:2167-8359
Megjegyzések:The genus Elatine contains ca 25 species, all of which are small, herbaceous annuals distributed in ephemeral waters on both hemispheres. However, due a high degree of morphological variability (as a consequence of their amphibious life-style), the taxonomy of this genus remains controversial. Thus, to fill this gap in knowledge, we present a detailed molecular phylogenetic study of this genus based on nuclear (rITS) and plastid (accD-psaI, psbJ-petA, ycf6-psbM-trnD) sequences using 27 samples from 13 species. On the basis of this phylogenetic analysis, we provide a solid phylogenetic background for the modern taxonomy of the European members of the genus. Traditionally accepted sections of this tree (i.e. Crypta and Elatinella) were found to be monophyletic, only E. brochonii - found to be a basal member of the genus - has to be excluded from the latter lineage to enforce monophyly. A number of taxonomic conclusions can also be drawn: E. hexandra, an high-ploid species is most likely a stabilised hybrid between the main sections; E. ampylosperma merits full species status based on bothmolecular and morphological evidence; E. gussonei is a more widespread and genetically diverse species with two main lineages, and the presence of the Asian E. ambigua in the European flora is questionable. The main lineages recovered in this analysis are also supported by a number ofsynapomorphic morphological characters as well as uniform chromosome counts. Based on all the evidence presented here, two new subsections within Elatinella are described: Subsection Hydropipera consisting of temperate species of the section, and; Subsection Macropodae including the Mediterranean species of the section.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:PeerJ. - 4 (2016), p. 1-25. -
További szerzők:Molnár V. Attila (1969-) (biológus, botanikus) Tóth János Pál (1981-) Laczkó Levente (1992-) (biológus) Kalinka Anna Horváth Orsolya Skuza Lidia Lukács Balázs András (1979-) (ökológus) Popiela, Agnieszka
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
DOI
Borító:

10.

001-es BibID:BIBFORM078508
035-os BibID:(cikkazonosító)e4913 (WoS)000434233600012 (Scopus)85047796467
Első szerző:Takács Attila (biológus, botanikus)
Cím:Resurrection and typification of Elatine campylosperma (Elatinaceae), a longforgotten waterwort species / Attila Takács, Attila Molnár V., Balázs A. Lukács, Timea Nagy, Ádám Lovas-Kiss, Andy J. Green, Agnieszka Popiela, Lajos Somlyay
Dátum:2018
ISSN:2167-8359
Megjegyzések:The name Elatine campylosperma Seub. is generally treated as one of the synonyms of E. macropoda Guss. However, recent morphological, phylogenetic and karyological studies indicate that this judgement should be revised. In the present paper we typify the name E. campylosperma, review its taxonomic history and provide a thorough description, with compilation of previously published data and our new measurements from in vitro cultures. Based on our herbarium survey, we outline its Atlantic-Mediterranean distribution area (Spain, France, Italy, Greece, Turkey and Algeria). Habitat preferences are summarized from our field observations, water quality measurements and the label information of the herbarium specimens examined. Intact E. campylosperma seeds were found in faecal samples of the Eurasian Coot (Fulica atra L.) in southern Spain and two of them were germinated, suggesting that E. campylosperma has a capacity for long distance dispersal via endozoochory.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Endozoochory
Amphibious plant
Lectotypification
Herbarium
Mediterranean flora
Wetland ephemerophyte
Megjelenés:PeerJ. - 6 (2018), p. 1-20. -
További szerzők:Molnár V. Attila (1969-) (biológus, botanikus) Lukács Balázs András (1979-) (ökológus) Nagy Timea Lovas-Kiss Ádám (1991-) (biológus, botanikus) Green, Andy J. Popiela, Agnieszka Somlyay Lajos
Pályázati támogatás:ÚNKP-17-4
Egyéb
ÚNKP-17-3-I-DE-385
Egyéb
OTKA-108992
OTKA
OTKA PD120775
OTKA
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Intézményi repozitóriumban (DEA) tárolt változat
Borító:

11.

001-es BibID:BIBFORM063180
035-os BibID:(WoS)000374159800006 (Scopus)84963936597
Első szerző:Tartally András (biológus)
Cím:Host plant use drives genetic differentiation in syntopic populations of Maculinea alcon / András Tartally, Andreas Kelager, Matthias A. Fürst, David R. Nash
Dátum:2016
ISSN:2167-8359
Megjegyzések:The rare socially parasitic butterfly Maculinea alcon occurs in two forms, which are characteristic of hygric or xeric habitats and which exploit different host plants and host ants. The status of these two forms has been the subject of considerable controversy. Populations of the two forms are usually spatially distinct, but at R¡ascruci in Romania both forms occur on the same site (syntopically). We examined the genetic differentiation between the two forms using eight microsatellite markers, and compared with a nearby hygric site, ₀Sardu. Our results showed that while the two forms are strongly differentiated at R¡ascruci, it is the xeric form there that is most similar to the hygric form at ₀Sardu, and Bayesian clustering algorithms suggest that these two populations have exchanged genes relatively recently. We found strong evidence for population substructuring, caused by high within host ant nest relatedness, indicating very limited dispersal of most ovipositing females, but not association with particular host ant species. Our results are consistent with the results of larger scale phylogeographic studies that suggest that the two forms represent local ecotypes specialising on different host plants, each with a distinct flowering phenology, providing a temporal rather than spatial barrier to gene flow.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:PeerJ. - 4 (2016), p. [21]. -
További szerzők:Kelager, Andreas Fürst, Matthias A. Nash, David R.
Pályázati támogatás:Marie Curie CIG 'AntLab'
FP7
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Intézményi repozitóriumban (DEA) tárolt változat
Borító:

12.

001-es BibID:BIBFORM101279
035-os BibID:(WoS)000785983700004 (Scopus)85128657457
Első szerző:Tóth Ágnes
Cím:Vertical distribution of soil seed bank and the ecological importance of deeply buried seeds in alkaline grasslands / Tóth Ágnes, Deák Balázs, Tóth Katalin, Kiss Réka, Lukács Katalin, Rádai Zoltán, Godó Laura, Borza Sándor, Kelemen András, Miglécz Tamás, Bátori Zoltán, Novák Tibor József, Valkó Orsolya
Dátum:2022
ISSN:2167-8359
Megjegyzések:Background: Soil seed banks play a central role in vegetation dynamics and may be an important source of ecological restoration. However, the vast majority of seed bank studies examined only the uppermost soil layers (0?10 cm); hence, our knowledge on the depth distribution of seed bank and the ecological significance of deeply buried seeds is limited. The aim of our study was to examine the fine-scale vertical distribution of soil seed bank to a depth of 80 cm, which is one of the largest studied depth gradients so far. Our model systems were alkaline grasslands in East- Hungary, characterised by harsh environmental conditions, due to Solonetz soil reference group with Vertic horizon. We asked the following questions: (1) How do the seedling density and species richness of soil seed bank change along a vertical gradient and to what depth can germinable seeds be detected? (2) What is the relationship between the depth distribution of the germinable seeds and the species traits? Methods: In each of the five study sites, four soil cores (4 cm diameter) of 80 cm depth were collected with an auger for soil seed bank analysis. Each sample was divided into sixteen 5-cm segments by depth (320 segments in total). Samples were concentrated by washing over sieves and then germinated in an unheated greenhouse. Soil penetration resistance was measured in situ next to each core location (0?80 cm depth, 1-cm resolution). We tested the number and species richness of seedlings observed in the soil segments (N = 320), using negative binomial generalized linear regression models, in which sampling layer and penetration resistance were the predictor variables. We ran the models for morphological groups (graminoids/forbs), ecological groups (grassland species/weeds) and life-form categories (short-lived/perennial). We also tested whether seed shape index, seed mass, water requirement or salt tolerance of the species influence the vertical distribution of their seed bank. Results: Germinable seed density and species richness in the seed bank decreased with increasing soil depth and penetration resistance. However, we detected nine germinable seeds of six species even in the deepest soil layer. Forbs, grassland species and short-lived species occurred in large abundance in deep layers, from where graminoids, weeds and perennial species were missing. Round-shaped seeds were more abundant in deeper soil layers compared to elongated ones, but seed mass and ecological indicator values did not influence the vertical seed bank distribution. Our research draws attention to the potential ecological importance of the deeply buried seeds that may be a source of recovery after severe disturbance. As Vertisols cover 335 million hectares worldwide, these findings can be relevant for many regions and ecosystems globally. We highlight the need for similar studies in other soil and habitat types to test whether the presence of deep buried seeds is specific to soils with Vertic characteristics.
Tárgyszavak:Biológiai tudományok Természettudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Soil seed bank
Alkali grassland
Deeply buried seeds
Restoration
Seed ecology
Soil penetration resistance
Vertical distribution
Seed density
Vertisols
Seed shape
Megjelenés:PeerJ. - 10 (2022), p. 1-19. -
További szerzők:Deák Balázs (1978-) (biológus) Tóth Katalin Kiss Réka (1990-) (biológus, ökológus) Lukács Katalin (1993-) (biológus) Rádai Zoltán (1991-) (biológus) Godó Laura (1992-) (biológus, ökológus) Borza Sándor (1989-) (biológus) Kelemen András (1986-) (biológus-ökológus) Miglécz Tamás (1986-) (biológus ökológus) Bátori Zoltán Novák Tibor (1973-) (geográfus) Valkó Orsolya (1985-) (biológus)
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