Anna Mežaka

Anna Mežaka
Daugavpils University

Dr biol.

About

43
Publications
12,203
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
452
Citations

Publications

Publications (43)
Article
Coniferous forests play a significant role in rare wood-inhabiting bryophyte distribution. We studied the rare epixylic bryophyte Odontoschisma denudatum occurrence probability and cover in relation to dead log and forest stand variables and found that dead logs without bark were significant predictors of both O. denudatum occurrence and cover. Odo...
Article
Full-text available
Forest landscape plays a significant role in rare cryptogam distribution. However, data about the environmental demands of rare epiphytic bryophytes and lichens in boreo-nemoral forest landscapes are not complete. In this study, we focused on finding the main environmental predictors influencing the occurrence of three red-listed epiphytic bryophyt...
Article
Full-text available
1.The spatial structure of biotic communities can be shaped by niche‐based or stochastic processes, and the importance of both can change through time. Niche‐based processes include neighbour interactions, which can change in intensity and quality as communities develop in dependence of environmental conditions. Epiphylls, miniature communities of...
Article
Full-text available
Mežaka A., Plaksenkova I., Vanaga A., Petrova A., Svilāne I. 2021. Preliminary study of moss Homalia trichomanoides (Hedw.) Brid. gametophyte development from spores in vitro. Acta Biol. Univ. Daugavp., 21 (1): 1 – 8. Bryophyte spore cultures are used in experimental research to understand not only fundamental problems in biology, but also to expl...
Article
Full-text available
The present study is a compilation of epiphytic bryophyte data in 20 Latvian manor parks with a focus on epiphytic bryophyte geographical distribution on trees. In total, we found 42 epiphytic bryophyte species on 16 tree taxa. Epiphytic bryophyte species composition was more similar between regions than between trees.
Article
Full-text available
Questions: The importance of tropical rainforest gap dynamics in biodiversity maintenance is not fully understood, in particular for taxa other than trees and lianas. We used epiphylls on rainforest leaves to study the importance of leaf-and forest-scale succession in determining biodiversity patterns by characterizing community change with leaf ag...
Article
Full-text available
Manor parks are urban areas that offer favorable environmental conditions for epiphytic bryophyte and lichen conservation. We investigated epiphytic bryophyte and lichen species richness and functional trait associations with tree diameter and documented data about tree bark pH in Lūznava manor park in southeastern Latvia. In total, 76 epiphytic (4...
Book
Full-text available
This Red List is a summary of the conservation status of the European species of mosses, liverworts and hornworts, collectively known as bryophytes, evaluated according to IUCN’s Guidelines for Application of IUCN Red List Criteria at Regional Level. It provides the first comprehensive, region-wide assessment of bryophytes and it identifies those s...
Conference Paper
Full-text available
Spontaneous revegetation in harvested peatlands were studied throughout Latvia, the results are shortly explained.
Article
Full-text available
Bryophytes have been more and more studied, due to presence of many biologically active compounds among their secondary metabolites, unique drought resistance as well as due to their wide use as bioindicators of environmental pollution. The aim of the present study was to determine seasonal changes in chemical composition and composition of seconda...
Article
Raised peat bogs harbor unique vegetation types in specific hydrological conditions. Environmental controls of peat bog vegetation are relatively well known for the boreal zone, while in the European boreo-nemoral zone healthy raised bogs are nowadays very rare. By contrast, Latvia, located in the transition zone between the nemoral and the boreal...
Article
Full-text available
The first study about bryophytes in Lielie Kangari was published by Austra Āboliņa in 1982, where 144 species were found. The present study was conducted in the southern part of Lielie Kangari Nature Reserve in spring of 2016, where 148 bryophyte species and one bryophyte variety were found. In total 19 bryophyte species had conservation status in...
Article
Full-text available
Forests are among the major contributors of biodiversity in Riga city limits, representing potential habitats and substrates for bryophytes and lichens. Bryophytes and lichens were studied in 82 forest stands from seven stand types (dry Pinus sylvestris forest, wet Pinus sylvestris forest, wet deciduous forest, dry deciduous forest, nemoral forest,...
Article
Full-text available
The present study compiles the results of bryophyte species inventories made at the Mordovia State Nature Reserve from 2014 till 2016. The reserve covers the transitional area between broad-leaved forests and northern forest steppe. In total 96% of the reserve is covered by forests, where about half are pine forests. The annotated bryophyte checkli...
Article
Full-text available
The paper reports current knowledge about Usnea florida in Latvia. New species record with all known records of Usnea florida in Latvia are reported. Also, data on secondary substances detected by thin layer chromotography in all available Latvian herbarium material is provided.
Book
Full-text available
An annotated Bryophytes species list of the Mordovia State Nature Reserve is presented. It includes 155 species of Bryophyta and 24 species of Marchantiophyta. Plants species included in the Red Data Book of the Republic of Mordovia are marked.
Article
Full-text available
An increasing number of scientists as well as the public discuss the spread of invasive alien species that replace local species. One of such species is Sosnowsky’s hogweed that creates problems to land owners and managers as well as local residents in Rezekne municipality.The aim of the paper is to assess expert opinions on the application of cont...
Article
Priede, A. & Mežaka, A. 2016. Invasion of the alien moss Campylopus introflexus in cutaway peatlands. — Herzogia 29: 35–51. Campylopus introflexus is an invasive alien moss in Europe and North America considered as a threat to biodiversity, especially in dune habitats. In this study, we found that C. introflexus is a common pioneer species in vacuu...
Article
Full-text available
Studies of spontaneous revegetation in cutaway peatlands with residual fen peat are relatively scarce in Europe. However, knowledge about the spontaneous recovery of vegetation and factors affecting the succession can be applied in wetland restoration and conservation of valuable, threatened habitats and species populations. We analysed spontaneous...
Article
Full-text available
Invasive species are an important threat to the global biodiversity. Heracleum sosnowskyi is one of the invasive species being common in Eastern Europe, also in Latvia and threatening local ecosystems and biodiversity. The present study shows preliminary H. sosnowskyi monitoring results for the protected territories of Rezekne municipality. H. sosn...
Research
Full-text available
Nowadays human impact to habitats and species are stronger then ever before. Latvia is typical example of fragmented landscape, where forest patches are mixed with agricultural land and waterbodies. Latgale is one of typical such a fragmented landscape parts of Latvia. Around 6.41 % of Latgalian forests were evaluated as Woodland Key Habitats (W...
Article
Full-text available
span lang="EN">Nowadays human impact to habitats and species are stronger then ever before. Latvia is typical example of fragmented landscape, where forest patches are mixed with agricultural land and waterbodies. Latgale is one of typical such a fragmented landscape parts of Latvia. Around 6.41 % of Latgalian forests were evaluated as Woodland Key...
Article
Full-text available
Paper presents data about species for the first time revealed in flora of the Mordovian State Nature Reserve. There are Lycopodiella inundata, Potamogeton acutifolius, Potamogeton praelongus, Lemna turionifera, Ranunculus trichophyllus, Alchemilla acutiloba, Alchemilla cheirochlora, Alchemilla glabricaulis, Alchemilla homoeophylla, Alchemilla pusty...
Article
Full-text available
Софронова Е.В., Афонина О.М., Акатова Т.В., Андреева Е.Н., Баишева Э.З., Безгодов А.Г., Благовещенский И.В., Боровичев Е.А., Чемерис Е.В., Чернова А.М., Чернядьева И.В., Дорошина Г.Я., Дударева Н.В., Дудов С.В., Дулин М.В., Федосов В.Э., Габитова С.М., Игнатов М.С., Игнатова Е.А., Капитонова О.А., Казановский С.Г., Коткова В.М., Лавриненко О.В., Ма...
Article
Full-text available
Putna S., Mežaka A. 2014. Distribution of five interesting woodland key habitat bryophyte indicator species in Latvia. Acta Biol. Univ. Daugavp., 14 (1): 67 – 74. Distribution of five epiphytic bryophyte species (Anomodon longifolius, Homalia trichomanoides, Jamesoniella autumnalis, Lejeunea cavifolia, Neckera pennata), which are Woodland Key Habit...
Article
Full-text available
Lobaria amplissima is rare lichen in many European countries, including Latvia, where it is listed as extinct species with last known record in 1870 from Slitere, North – West Latvia. This species was refound in a spring of 2014 in North Vidzeme Biosphere Reserve on East from the past record in broad-leaved forest and black alder forest. The distri...
Article
Full-text available
Distribution of epiphytic bryophyte species was studied in Woodland Key Habitats (WKH) and in managed forest stands in the North-East Latvia (district Gulbene). In total, 32 epiphytic bryophyte species were found in six WKH stands. Five endangered/threatened bryophyte species (Anomodon longifolius, Homalia trichomanoides, Jamesoniella autumnalis, L...
Article
Full-text available
Transplantation experiments with Neckera pennata and Lobaria pulmonaria were conducted in nemoral Woodland Key Habitat and managed forest (in total 38 trees) in Latvia. Elastic cotton bandage was the best method for the present transplantation experiments. Dispersal and establishment limitation were found to be crucial for N. pennata and L. pulmona...
Article
Full-text available
Distribution and ecology of a rare red-listed bryophyte Dicranum viride were studied in nemoral and dark coniferous-nemoral forests of the western part of the Southern Urals. In total, data from 63 sample plots (20×20 m) which were made in forests with different age structures were analyzed. Populations of Dicranum viride in the Southern Urals show...
Article
Full-text available
Софронова Е.В. и др. 2013. New bryophyte records. 2 – Новые бриологические находки. 2. Arctoa, 22: 239–262. DOI: 10.15298/arctoa.22.33 (in Russian & English).
Article
Full-text available
Fifty five species of lichens and lichenicolous fungi are reported from the Southern Ural (Republic of Bashkortostan and Chelyabinsk Region). Graphis betulina, Micarea micrococca, and Ramonia chrysophaea are reported for the first time in Russia. Abrothallus microspermus, Arthopyrenia grisea, Biatora pontica, Collema ligerinum, Puttea margaritella,...
Article
Full-text available
In total 24 bryophyte species (10 liverworts and 13 mosses) are recorded for the first time for the territory of St. Petersburg and five rare species (Anthoceros agrestis Paton, Fossombronia wondraczekii (Corda) Dumort. ex Lindb., Aloina rigida (Hedw.) Limpr., Dicranella humilis R. Ruthe, Seligeria diversifolia Lindb.) are listed for the territory...
Article
Conservation and sustainable forestry are essential in a multi-functional landscape. In this respect, ecological studies on epiphytes are needed to determine abiotic and biotic factors associated with high diversity. The aim of the present study was to evaluate relative sensitivity of conservation targets (epiphytic bryophytes and lichens) in relat...
Article
Full-text available
Mežaka, A., Brūmelis, G., Piterāns, A. & Printzen, Ch. 2012: Distribution of Lepraria in Latvia in relation to tree substratum and deciduous forest type. — Ann. Bot. Fennici 49: 162–170. The aim of the study was to evaluate the distribution of Lepraria lichen species in dry deciduous forests, in relation to tree substratum and forest characteristic...
Article
Full-text available
Information on Schistostega pennata is limited in the Baltic countries. In Latvia S. pennata is listed as 'rare' in the Red data book but still little is known about the species distribution in relation to habitat and substrate. A search of all available literature and unpublished records provided information on about 21 S. pennata records in Latvi...
Article
Full-text available
Epiphytic bryophyte and lichen species distribution was studied in representative natural old-growth broad leaved forests in Latvia. Overall 120 epiphytic bryophyte and lichen species were found in 13 forest stands. Seven Latvian red-listed bryophyte (Antitrichia curtipendula, Lejeunea cavifolia, Metzgeria furcata, Neckera complanata, Neckera penna...
Article
Full-text available
Little is known about the ecology of epiphytic bryophytes in broad-leaved forests of slopes, screes and ravines. Factors determining the epiphytic bryophyte distribution in such forests were investigated. In total 45 epiphytic bryophyte species were found (12 of them were signal species, including three specially protected species in Latvia – Antit...
Article
Full-text available
Distribution of epiphytic bryophytes was studied in five specially protected nature territories – Geological and Geomorphological Nature monuments - “Kalamecu un Markūzu gravas”, “Korkuļu sausgultne un pazemes upe”, Nature Reserves – “Pilskalnes Siguldiņa”, “Dziļezers un Riebezers” and “Vieðu pilskalns” in Gauja National park during 2004 and 2005....

Network

Cited By