Myxomycetes associated with mountain tropical forests of Bidoup Nui Ba and Chu Yang Sin national parks (Dalat Plateau, southern Vietnam)

Abstract

<jats:p>A systematic survey for myxomycetes was carried out in 2011–2014 and 2017 at 106 localities in mountain tropical forests of Bidoup Nui Ba and Chu Yang Sin national parks (Dalat Plateau, southern Vietnam). In total, the survey yielded 652 records, of which 358 were field collections and 294 were collections obtained from 819 moist chamber cultures prepared with samples taken from the bark surface of living trees, ground and aerial litter and coarse woody debris. Determinations resulted in 105 taxa from 28 genera and 10 families. More than half (61) of all taxa were classified as rare. One collection of<jats:italic> Badhamia</jats:italic> could not be clearly assigned to any described species. Forty-two taxa were recorded for the first time for Vietnam and all were new for both national parks. The number of recorded taxa, increasing in a near-linear fashion with the number of field seasons, since sporulation activity of different species varies from year to year. Among the four natural vegetation types: middle mountain polydominant (A), mixed broadleaf-coniferous (B), middle mountain open pyrogenic coniferous (C), and high mountain cloud forest (D), completeness of the survey was highest for the first one. A pattern of decreasing diversity with increasing elevation was found. In contrast, the specificity of myxomycete assemblages increased progressively in the sequence of vegetation types from A to D. In addition, artificial banana plantations (E) comprised the most distinctive but as well the least diverse myxomycete assemblage among all studied vegetation types. The taxonomic composition of myxomycete assemblages on major substrate groups differs from that in lowland forests, and species diversity increased from bark and aerial litter to ground litter and wood.</jats:p>

Quick n’ Cheap – a simplified workflow to barcode plasmodial slime molds(Myxomycetes)

“…(4) LOW INPUT: Taxonomically critical material is often very scanty, especially specimens from moist-chamber cultures which are crucial for surveys in arid (Schnittler et al 2015b) and tropical regions (Novozhilov et al , 2019. Therefore, one needs to obtain material for sequencing without destroying a sporocarp.…”

Occurrence of leaf litter inhabiting myxomycetes from lowland forest patches of Northern and Central Vietnam

“…This species is initially considered as truly coprophilous, which is known from very few collections in the world. Novozhilov et al (2020) first reported this species for the county and that is also noteworthy to mention that the species Trichia pappilata is only reported in Vietnam in comparison among other countries in the Southeast Asian region.…”

“…Some previous countries in the region that have information for myxomycete studies are the Philippines with 159 species (Dagamac and dela Cruz 2015;Macabago et al 2017;Bernardo et al 2018), Thailand with 145 (Ko Ko et al 2010;Dagamac et al 2017b), Indonesia with 119 (Farr 1990;Rosing et al 2011), Republic of Singapore with 76 (Rosing et al 2011), Myanmar with 67 (Ko Ko et al 2013a), and Laos with 44 (Ko Ko et al 2013b). In Vietnam, most of the myxomycete studies have been investigated in the southern part of the country (Novozhilov et al 2018(Novozhilov et al , 2020 while the number of myxomycete studies on the other parts of the country is relatively scarce. Furthermore, the first myxomycete report for Vietnam started only in 2009 that initially annotated 23 species by Van Hooff (2009), wherein the rare species Cribraria tecta was reported as a new species for science.…”

“…Stephenson et al (2019) have reported the presence of Barbeyella minutissima, the rare temperate myxomycetes that are commonly associated with Picea trees, on higher elevation areas of Southern Vietnam. But perhaps, the recent publication of Novozhilov et al (2020) about the long term systematic survey in Bidoup Nui Ba and Chu Yang Sin national parks is the most extensive work conducted for the country so far with 105 taxa being reported, forty-two of which are new records for Vietnam including a Badhamia species suspected to be new to science. All these efforts now amounted to 174 myxomycetes species for Vietnam.…”

A comparative diversity study of myxomycetes in the lowland forests of Mt. Malasimbo and Mt. Siburan, Mindoro Island, Philippines

“…Furthermore, the first local habitat suitability modeling using the tropical cosmopolitan species Diderma hemisphaericum (Bull) Hornem has demonstrated range expansion of the species on various climate change scenarios (Almadrones-Reyes & Dagamac 2018). Recently, the Paleotropical Asia-Pacific zone had also gained its momentum of more exhaustive myxomycete surveys wherein Southeast Asian countries like Vietnam (174 species, Nguyen et al 2019, Novozhilov et al 2020 and Thailand (145 spe Stephenson (Novozhilov & Stephenson 2015)]. To contribute to this growing trend in myxomycete distribution studies, the primary objective of the present study was to investigate the assemblages of myxomycetes in two lowland forests of Mindoro Island.…”