The Japanese walnut (Juglans ailantifolia Carrière) is considered a very rare native tree species to Sakhalin Island. There is no information about J. ailantifolia records in the natural broad-leaved mixed forests of the island. The valleys of the Uglegorka and the Nadym Rivers in the Uglegorsk administrative district were noted as the main habitats areas of J. ailantifolia in several sources. We found that all walnut trees from these locations belong to artificial forest stands over 95 years old. We conclude that J. ailantifolia is a non-native species to the modern flora of Sakhalin and was introduced from Japan at the beginning of the XX century.
{"title":"Is the Japanese walnut (Juglans ailantifolia, Juglandaceae) native to Sakhalin Island?","authors":"K. Korznikov, T. Petrenko, Violetta D. Dziziurova","doi":"10.17581/bp.2022.11112","DOIUrl":"https://doi.org/10.17581/bp.2022.11112","url":null,"abstract":"The Japanese walnut (Juglans ailantifolia Carrière) is considered a very rare native tree species to Sakhalin Island. There is no information about J. ailantifolia records in the natural broad-leaved mixed forests of the island. The valleys of the Uglegorka and the Nadym Rivers in the Uglegorsk administrative district were noted as the main habitats areas of J. ailantifolia in several sources. We found that all walnut trees from these locations belong to artificial forest stands over 95 years old. We conclude that J. ailantifolia is a non-native species to the modern flora of Sakhalin and was introduced from Japan at the beginning of the XX century.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67436711","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}
M. Y. Telyatnikov, O. Khitun, K. Ermokhina, S. A. Pristyazhnyuk
The syntaxonomic diversity of vegetation in the upper reaches of the Enga-Yu River is described. The specificity of the vegetation in the study area was determined by the ubiquitous occurrence of ultramafic rocks, which contributed to an increase in the harshness of habitats due to the high concentration of heavy metals and the low calcium content. Unfavorable geochemical environments caused the absence of several common in this region species and in the same time the change of ecological preferences and ecological amplitude of other species. Within the lower and middle parts of the alpine belt, we distinguished and described for the first time 4 associations and 2 subassociations. Cladonio rangiferinae–Caricetum arctisibiricae ass. nov. with 2 subassociations (C. r.–C. a. typicum subass. nov., C. r.–C. a. dicranetosum acutifolii subass. nov.) we assigned to the class Loiseleurio procumbentis– Vaccinietea Eggler ex Schubert 1960. Asahineo chrysanthae–Racomitrietum lanuginosi ass. nov. is placed into the class Carici rupestris–Kobresietea bellardii Ohba 1974. Two associations were distinguished as provisional. Tephroserido tundricolae–Bistortetum ellipticae ass. prov. comprising snowbed vegetation, is not assigned yet to any higher unit. Festuco arcticae–Caricetum arctisibiricae ass. prov. comprises meadow communities, it is assigned to the class Juncetea trifidi Hadač in Klika et Hadač 1944 and order Juncetalia trifidi Daniёls 1994. It is not assigned to any alliance due to the shortage of data. The peculiarity of these provisional associations we explain by the influence of ultramafic rocks.
{"title":"Vegetation of the ultramafic mountain massif Rai-Iz (upper reaches of the Enga-Yu River, the Polar Urals, Russia)","authors":"M. Y. Telyatnikov, O. Khitun, K. Ermokhina, S. A. Pristyazhnyuk","doi":"10.17581/bp.2022.11108","DOIUrl":"https://doi.org/10.17581/bp.2022.11108","url":null,"abstract":"The syntaxonomic diversity of vegetation in the upper reaches of the Enga-Yu River is described. The specificity of the vegetation in the study area was determined by the ubiquitous occurrence of ultramafic rocks, which contributed to an increase in the harshness of habitats due to the high concentration of heavy metals and the low calcium content. Unfavorable geochemical environments caused the absence of several common in this region species and in the same time the change of ecological preferences and ecological amplitude of other species. Within the lower and middle parts of the alpine belt, we distinguished and described for the first time 4 associations and 2 subassociations. Cladonio rangiferinae–Caricetum arctisibiricae ass. nov. with 2 subassociations (C. r.–C. a. typicum subass. nov., C. r.–C. a. dicranetosum acutifolii subass. nov.) we assigned to the class Loiseleurio procumbentis– Vaccinietea Eggler ex Schubert 1960. Asahineo chrysanthae–Racomitrietum lanuginosi ass. nov. is placed into the class Carici rupestris–Kobresietea bellardii Ohba 1974. Two associations were distinguished as provisional. Tephroserido tundricolae–Bistortetum ellipticae ass. prov. comprising snowbed vegetation, is not assigned yet to any higher unit. Festuco arcticae–Caricetum arctisibiricae ass. prov. comprises meadow communities, it is assigned to the class Juncetea trifidi Hadač in Klika et Hadač 1944 and order Juncetalia trifidi Daniёls 1994. It is not assigned to any alliance due to the shortage of data. The peculiarity of these provisional associations we explain by the influence of ultramafic rocks.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"154 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67436754","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}
A classification system of the Colchic spruce-fir forests (the Western Caucasus) was developed using the Brawn-Blanquet method. Two new associations Dryopterido caucasicae–Abietetum nordmannianae ass. nov., Pruno laucerasi–Abietetum nordmannianae ass. nov. and new alliance Dryopterido caucasicae–Abietion nordmannianae all. nov. were proposed after the comparative syntaxonomic analysis of dark coniferous forests from the Euxine province. Diagnostic species of the alliance are Acer pseudoplatanus, Actaea spicata, Athyrium filix-femina, Dentaria bulbifera, Dryopteris carthusiana, D. filix-mas, Fagus orientalis, Geranium robertianum, Gymnocarpium dryopteris, Impatiens noli-tangere, Oxalis acetosella, Paris incompleta, Polystichum aculeatum, Ranunculus grandiflorus, Rubus caucasicus, Salvia glutinosa, Symphytum grandiflorum. All described Colchic associations and alliance were placed in the order Abieti nordmannianae– Piceetalia orientalis Coban et Willner 2019 and the class Asaro europaeai–Abietetea sibiricae Ermakov et al. in Willner et al. 2016 uniting West Palearctic dark coniferous subnemoral forests from Europe, Asia Minor, Southern Urals and Western Siberia.
{"title":"Abies nordmanniana and Picea orientalis forests from the Colchic region (Western Caucasus) and new concept of Euxine dark coniferous forests classification in the Braun-Blanquet system","authors":"N. Ermakov, Y. Plugatar, V. D. Leiba","doi":"10.17581/bp.2022.11210","DOIUrl":"https://doi.org/10.17581/bp.2022.11210","url":null,"abstract":"A classification system of the Colchic spruce-fir forests (the Western Caucasus) was developed using the Brawn-Blanquet method. Two new associations Dryopterido caucasicae–Abietetum nordmannianae ass. nov., Pruno laucerasi–Abietetum nordmannianae ass. nov. and new alliance Dryopterido caucasicae–Abietion nordmannianae all. nov. were proposed after the comparative syntaxonomic analysis of dark coniferous forests from the Euxine province. Diagnostic species of the alliance are Acer pseudoplatanus, Actaea spicata, Athyrium filix-femina, Dentaria bulbifera, Dryopteris carthusiana, D. filix-mas, Fagus orientalis, Geranium robertianum, Gymnocarpium dryopteris, Impatiens noli-tangere, Oxalis acetosella, Paris incompleta, Polystichum aculeatum, Ranunculus grandiflorus, Rubus caucasicus, Salvia glutinosa, Symphytum grandiflorum. All described Colchic associations and alliance were placed in the order Abieti nordmannianae– Piceetalia orientalis Coban et Willner 2019 and the class Asaro europaeai–Abietetea sibiricae Ermakov et al. in Willner et al. 2016 uniting West Palearctic dark coniferous subnemoral forests from Europe, Asia Minor, Southern Urals and Western Siberia.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67438545","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}
Violetta D. Dziziurova, K. Korznikov, Tatiana Y. Petrenko, S. Dudov, P. Krestov
We assess the impact of typhoon Maysak (2020) on the canopy structure of mixed coniferous-broadleaved forests with Abies holophylla, Pinus koraiensis and a complex of deciduous broad-leaved species and secondary oak forests of Quercus mongolica. The study was conducted in the experimental forest of the Botanical Garden-Institute FEB RAS. We classified the natural forest vegetation of the study area, created a high-resolution vegetation map, and assessed the damage from typhoon Maysak remotely using the ultra-high resolution images, obtained with an unmanned aerial vehicle. We found that the largest number and area of canopy gaps are associated with the conditionally primary coniferous-broadleaved forests, where Abies holophylla and Pinus koraiensis form the main canopy layer. The smallest number and area of gaps relate to the secondary oak forests.
{"title":"Assessment of the mixed coniferousbroadleaved forest canopy disturbance induced by typhoon Maysak (2020) using drone-borne images near Vladivostok, Russia","authors":"Violetta D. Dziziurova, K. Korznikov, Tatiana Y. Petrenko, S. Dudov, P. Krestov","doi":"10.17581/bp.2022.11214","DOIUrl":"https://doi.org/10.17581/bp.2022.11214","url":null,"abstract":"We assess the impact of typhoon Maysak (2020) on the canopy structure of mixed coniferous-broadleaved forests with Abies holophylla, Pinus koraiensis and a complex of deciduous broad-leaved species and secondary oak forests of Quercus mongolica. The study was conducted in the experimental forest of the Botanical Garden-Institute FEB RAS. We classified the natural forest vegetation of the study area, created a high-resolution vegetation map, and assessed the damage from typhoon Maysak remotely using the ultra-high resolution images, obtained with an unmanned aerial vehicle. We found that the largest number and area of canopy gaps are associated with the conditionally primary coniferous-broadleaved forests, where Abies holophylla and Pinus koraiensis form the main canopy layer. The smallest number and area of gaps relate to the secondary oak forests.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67438577","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}
There are 3 state nature reserves on the territory of the Amur Region, Zeya, Nora and Khingan. Medium-scale (M 1:300000) vegetation maps of the reserves were made to analyze the geographical features of vegetation. The maps have a common legend, which is constructed according to the zonal-typological principle. It contains 43 names of mapped polygons. We assessed the environmental factors according to Landolt’s scales. Vegetation of plains occupies 61 % of the total area of the reserves, vegetation of mountains and hills 39 %. Boreal vegetation covers 68 % of the total area of the reserves, nemoral vegetation 7 %, alpine and subalpine vegetation 2 %, and intrazonal vegetation 23 %. Alpine and subalpine vegetation is found only in the Zeya Reserve. Temperate and intrazonal vegetation occupies the largest areas in the Khingan Reserve: 99 and 60 %, respectively. The share of boreal vegetation in the Zeya Reserve is 70 %, in the Nora Reserve 80 %. In the regional aspect, the representation of vegetation of Amur Region in nature reserves is very small, therefore additional measures for vegetation conservation at regional scale is required.
{"title":"Botanical and geographycal diversity of the nature reserves of the Amur Region (Russia)","authors":"I. G. Borisova, E. Astapova","doi":"10.17581/bp.2022.11219","DOIUrl":"https://doi.org/10.17581/bp.2022.11219","url":null,"abstract":"There are 3 state nature reserves on the territory of the Amur Region, Zeya, Nora and Khingan. Medium-scale (M 1:300000) vegetation maps of the reserves were made to analyze the geographical features of vegetation. The maps have a common legend, which is constructed according to the zonal-typological principle. It contains 43 names of mapped polygons. We assessed the environmental factors according to Landolt’s scales. Vegetation of plains occupies 61 % of the total area of the reserves, vegetation of mountains and hills 39 %. Boreal vegetation covers 68 % of the total area of the reserves, nemoral vegetation 7 %, alpine and subalpine vegetation 2 %, and intrazonal vegetation 23 %. Alpine and subalpine vegetation is found only in the Zeya Reserve. Temperate and intrazonal vegetation occupies the largest areas in the Khingan Reserve: 99 and 60 %, respectively. The share of boreal vegetation in the Zeya Reserve is 70 %, in the Nora Reserve 80 %. In the regional aspect, the representation of vegetation of Amur Region in nature reserves is very small, therefore additional measures for vegetation conservation at regional scale is required.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67439265","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}
The article presents data on the bio-morphological characteristics of germina- tion, flowering and fruiting of the endangered species Microcnemum coralloides subsp. anatolicum, preserved in the relict salt marshes of the Ararat valley within the Juncus acutus community. According to the monitoring results, the state of the Microcnemum population in terms of reproductive capacity and adaptive proper- ties to the increasing aridity of the Ararat salt marshes can currently be assessed as satisfactory. The main threats to the population are the reduction and degrada- tion of the habitat under the influence of anthropogenic factors.
{"title":"On biomorphological and phytocoenotic characteristics of Microcnemum coralloides subsp. anatolicum (Chenopodiaceae) in the Ararat valley of Armenia","authors":"J. Akopian","doi":"10.17581/bp.2022.11207","DOIUrl":"https://doi.org/10.17581/bp.2022.11207","url":null,"abstract":"The article presents data on the bio-morphological characteristics of germina- tion, flowering and fruiting of the endangered species Microcnemum coralloides subsp. anatolicum, preserved in the relict salt marshes of the Ararat valley within the Juncus acutus community. According to the monitoring results, the state of the Microcnemum population in terms of reproductive capacity and adaptive proper- ties to the increasing aridity of the Ararat salt marshes can currently be assessed as satisfactory. The main threats to the population are the reduction and degrada- tion of the habitat under the influence of anthropogenic factors.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67438114","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}
O. Pisarenko, V. Fedosov, K. Korznikov, A. Shkurko, E. Ignatova
On the southern periphery of Badzhal Mountain Range on, an area of about 25 sq. km, we found 313 species of mosses, listed here with distribution along with the altitudinal belts, ecotopes, and substrates. Among them, 73 species are newly recorded for the middle part of Khabarovsk Territory, and 39 of them are new to the whole Khabarovsk Territory, including rare species with no or few previously known records in Russia such as Campylopus gracilis, Sematophyllum substrumulosum, Anomodon solovjovii, Bryoerythrophyllum chenii, Dicranum setifolium, Ditrichum macrorhynchum, Haplohymenium longinerve, Okamurea hakkoniensis, Orthotrichum rogeri, Sphagnum miyabeanum, S. subnitens; identity of several species needs in specially focused taxonomic studies. Studied flora is compared with ones of Zeysky State Nature Reserve, Upper Bureya, and a combined list of mosses of Botchinsky Nature Reserve and Tordoki-Yani Mt. Among all these floras, the proportion of Eastern species in Badzhal is the highest. Main types of vegetation and bryophyte ecotopes are briefly characterized; distribution of species along an altitudinal gradient among considered types of habitats and substrates, is discussed.
{"title":"The moss flora of the Badzhal Mountain Range (Khabarovsk Territory, Russian Far East)","authors":"O. Pisarenko, V. Fedosov, K. Korznikov, A. Shkurko, E. Ignatova","doi":"10.17581/bp.2022.11105","DOIUrl":"https://doi.org/10.17581/bp.2022.11105","url":null,"abstract":"On the southern periphery of Badzhal Mountain Range on, an area of about 25 sq. km, we found 313 species of mosses, listed here with distribution along with the altitudinal belts, ecotopes, and substrates. Among them, 73 species are newly recorded for the middle part of Khabarovsk Territory, and 39 of them are new to the whole Khabarovsk Territory, including rare species with no or few previously known records in Russia such as Campylopus gracilis, Sematophyllum substrumulosum, Anomodon solovjovii, Bryoerythrophyllum chenii, Dicranum setifolium, Ditrichum macrorhynchum, Haplohymenium longinerve, Okamurea hakkoniensis, Orthotrichum rogeri, Sphagnum miyabeanum, S. subnitens; identity of several species needs in specially focused taxonomic studies. Studied flora is compared with ones of Zeysky State Nature Reserve, Upper Bureya, and a combined list of mosses of Botchinsky Nature Reserve and Tordoki-Yani Mt. Among all these floras, the proportion of Eastern species in Badzhal is the highest. Main types of vegetation and bryophyte ecotopes are briefly characterized; distribution of species along an altitudinal gradient among considered types of habitats and substrates, is discussed.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67436530","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}
Elena V. Baikova, O. Turdiboev, Sardor Pulatov, F. Madaminov, K. Baikov, Mariya Sheludyakova
Salvia insignis Kudr. is a rare local endemic growing on the Babatag ridge of Southern Uzbekistan and Tajikistan, between 600 and 1100 m a.s.l. It is an element of specific original flora of variegated outcrops, a typical flora of mountainous Middle Asia. Described in 1937 from the collections of 1887, it was reported as presented in several localities, and only with very few occurrences. Since then, despite the searches by botanists, there have been no collections of herbarium specimens from those sites mentioned in the literature, most likely due to strong environmental human-induced alterations in the landscape. The obtained new data on the distribution and morphology of this species will allow us to develop strategies for its protection in situ and preservation of the gene pool ex situ.
{"title":"Salvia insignis Kudr. (Lamiaceae): current status, rarity, and prospects for conservation in situ","authors":"Elena V. Baikova, O. Turdiboev, Sardor Pulatov, F. Madaminov, K. Baikov, Mariya Sheludyakova","doi":"10.17581/bp.2022.11203","DOIUrl":"https://doi.org/10.17581/bp.2022.11203","url":null,"abstract":"Salvia insignis Kudr. is a rare local endemic growing on the Babatag ridge of Southern Uzbekistan and Tajikistan, between 600 and 1100 m a.s.l. It is an element of specific original flora of variegated outcrops, a typical flora of mountainous Middle Asia. Described in 1937 from the collections of 1887, it was reported as presented in several localities, and only with very few occurrences. Since then, despite the searches by botanists, there have been no collections of herbarium specimens from those sites mentioned in the literature, most likely due to strong environmental human-induced alterations in the landscape. The obtained new data on the distribution and morphology of this species will allow us to develop strategies for its protection in situ and preservation of the gene pool ex situ.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67437230","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}
New information about ontogenesis and ontogenetic structure of cenotic populations of the rarest endemic of Kyzylkum mountains Eremurus anisopterus (Kar. & Kir.) Regel is presented. Plant communities with participation of cenopopulations of the studied species are characterized. Duration of ontogenesis in natural conditions lasts more than 20 years. The vegetation cycle of E. anisopterus under Kyzylkum desert conditions lasts about five months, from March to July. The study showed that in different ecological and cenotic conditions of the Kyzylkum desert the E. anisopterus cenopopulations are normal but incomplete. Cenopulations in both studied plant communities (Eremerus–sagebrush and Eremurus–Peganum) are young. The ontogenetic spectrum is left-handed and coincides with the characteristic one. This, in general, reflects the biological features of E. anisopterus and indicates the stable state of the Kuldjuktau population of the species.
{"title":"Ontogenesis and ontogenetic structure of cenotic populations of Eremurus anisopterus (Asphodelaceae) in the Kyzylkum desert (Uzbekistan)","authors":"T. Rakhimova, N. Rakhimova","doi":"10.17581/bp.2022.11218","DOIUrl":"https://doi.org/10.17581/bp.2022.11218","url":null,"abstract":"New information about ontogenesis and ontogenetic structure of cenotic populations of the rarest endemic of Kyzylkum mountains Eremurus anisopterus (Kar. & Kir.) Regel is presented. Plant communities with participation of cenopopulations of the studied species are characterized. Duration of ontogenesis in natural conditions lasts more than 20 years. The vegetation cycle of E. anisopterus under Kyzylkum desert conditions lasts about five months, from March to July. The study showed that in different ecological and cenotic conditions of the Kyzylkum desert the E. anisopterus cenopopulations are normal but incomplete. Cenopulations in both studied plant communities (Eremerus–sagebrush and Eremurus–Peganum) are young. The ontogenetic spectrum is left-handed and coincides with the characteristic one. This, in general, reflects the biological features of E. anisopterus and indicates the stable state of the Kuldjuktau population of the species.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67439164","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}
V. Akatov, D. Afanasyev, T. V. Akatova, S. Chefranov, T. G. Eskina, E. G. Sushkova
We compared the species richness of the plant communities of different habitats on different sites of the biomass gradient. The analysis was based on data on 1089 above-ground biomass samples taken from the sites 0.25 m2 of terrestrial herbaceous communities of the Western Caucasus and Ciscaucasia (30–2800 m a.s.l.) and 317 samples taken from the same sites of the macrophytobenthos of the Black and Azov Seas (0.5–10 m depth). Results showed that a certain amount of biomass, sampled in communities of different types, includes, on average, a significantly different number of species. Thus, among terrestrial plant communities, highmountain communities of the Western Caucasus are characterized by the highest species richness in most ranges of the biomass gradient; communities of herb layer of shaded forests – on the contrary, the lowest richness. The macrophytobenthos of the Black Sea is characterized by lower species richness than most of the terrestrial communities, but higher species richness than the benthic communities of the Azov Sea. We showed that significant difference in the small-scale species richness of these communities can be plausibly explained by the peculiarities of their history.
比较了不同生境下不同立地植物群落的物种丰富度。该分析基于在西高加索和顺高加索0.25 m2陆生草本群落(30-2800 m a.s.l)和黑海和亚速海大型底栖植物相同地点(0.5-10 m深度)采集的1089个地上生物量样本的数据。结果表明:在不同类型群落取样的一定生物量中，平均包含的物种数量有显著差异。因此，在陆生植物群落中，在生物量梯度的大部分范围内，西高加索高山群落的物种丰富度最高;相反，草本层群落丰富度最低。黑海大型底栖植物群落的物种丰富度低于大多数陆地群落，但高于亚速海底栖生物群落。我们发现，这些群落的小尺度物种丰富度的显著差异可以用其历史的特殊性来合理解释。
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