Rapid assessment of the distribution of myxomycetes in a southwestern Amazon forest

Rojas, Carlos; Stephenson, Steven L.

doi:10.1016/j.funeco.2012.05.008

Cited by 11 publications

(6 citation statements)

References 19 publications

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“…Also, the diversity values calculated in the present study are similar to published research in the Neotropics with a similar effort (e.g. Rojas and Stephenson 2012). Interestingly, for Southeast Asia, productivity associated with myxomycete surveys along elevational transects of similar conditions has been reported to be lower (about 23%, see Dagamac et al 2012).…”

Section: Discussionsupporting

confidence: 90%

“…Unpublished results obtained by the first author in northern Thailand showed intermediate values (about 50%) and as observed in the present study and others, there may be differences in the yields obtained from moist chamber isolation according to a number of variables in the study. For example, collecting period and structural differences of the study areas (see Rojas and Stephenson 2012) generate differences in moist chamber culturing.…”

Section: Discussionmentioning

confidence: 99%

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Does elevation influence the distributional patterns of tropical myxomycetes? A case study in Costa Rica

2016

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In order to test the hypothesis that elevation may be an important factor accounting for the distribution of myxomycetes in tropical forests, this project was designed and conducted in Costa Rica. Two lower elevational belts were selected for this work due to their floristic and structural resemblance. Using the moist chamber technique, 40 different sites located in four different transects in two different macroclimatic regions were surveyed using three substrates during the rainy and the dry periods of 2014 and 2015. The results showed a lack of differences in diversity-based estimators according to elevation using different approaches and taxonomic differences were found across transects, collecting periods and substrates but not in relation with elevation either. Our results suggest that when increased spatial sampling resolution is implemented and floristic elements are common, elevation may not be as important of a factor in shaping the distribution of myxomycetes in tropical forests as commonly believed.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Does elevation influence the distributional patterns of tropical myxomycetes? A case study in Costa Rica

2016

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“…These patterns were also reported in several studies that showed plant heterogeneity to affect myxomycete diversity in the Tropics (Tran et al 2006, Alfaro et al 2015. Comparable study was conducted in southwestern Amazon forest, showing highest diversity in Mirador among the eight areas since it is characterized as an old growth forest (Rojas and Stephenson 2012). Moreover, myxomycete studies in the Philippines, for example in Bicol Peninsula (Dagamac et al 2017a) and in Puerto Galera (Dagamac et al 2015b) during the last recent years reported higher diversities in forest patches that are exposed to moderate anthropogenic activities such as trekking or animal domestication (Dagamac et al 2015b).…”

Section: Comparison Of the Diversities Of The Two Municipalitiessupporting

confidence: 76%

“…4) that also take into consideration the evenness of the distribution for each species and the taxonomic diversity index (Table 1) that was calculated in this study support also higher diversity in Los Baños than in Calauan. Perhaps, this can be explained by two concurring factors: (i) the exposure rate to anthropogenic disturbance (Webster and Jenkins 2005, Lassauce et al 2011, Dagamac et al 2015b and (ii) forest structure (Rojas and Stephenson 2012) of the two municipalities.…”

Section: Comparison Of the Diversities Of The Two Municipalitiesmentioning

confidence: 99%

Myxomycete communities occurring in fragmented forest patches in two municipalities of Laguna, Philippines

et al. 2018

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In spite of the increasing number of myxomycete studies in the tropical Southeast Asia over the last decades, many forest patches are still left unexplored for the region, in particular in the Philippine archipelago. Thus, an assessment of myxomycete diversity, occurrence, and composition was carried out in forest fragments from two municipalities of the province of Laguna, Philippines. From the 12 established 5 m × 5 m plots, a total of 240 moist chamber cultures were prepared for this study and yielded 42 myxomycete species belonging to 14 genera. Rarefaction curves and several heterogeneity indices revealed higher species diversity in Los Baños than in Calauan. Moreover, the taxonomic diversity index also showed that the taxonomic diversity of myxomycete in Los Baños is more intuitively diverse than in Calauan. In terms of community analysis between the two municipalities, it showed that myxomycete communities clustered between different microhabitats. High values of coefficient of community and percentage similarity indices possibly implicates that spore dispersal in forest fragments in closer proximities may cause high number of shared species (60%). With an addition of Cribraria lepida as a new record for the country, this study now updates the myxomycete profile for Laguna, Philippines.

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“…For myxomycetes, many diversity assessments have been carried out in Neotropical forests. These range from country checklists (Brazil, Cavalcanti, 2010;Colombia, Rojas et al, 2012a;Costa Rica, Rojas et al, 2010;El Salvador, Rojas et al, 2013) to abundance-based diversity assessments of natural habitats (Lado et al, 2003;Rojas & Stephenson, 2012). About half of the c. 1000 known morphospecies of myxomycetes (Lado, 2005(Lado, -2016 have been recorded from the Neotropics .…”

Section: Introductionmentioning

confidence: 99%

Biogeographical assessment of myxomycete assemblages from Neotropical and Asian Palaeotropical forests

Dagamac

Novozhilov

Stephenson

et al. 2017

Journal of Biogeography

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Aim Lowland/highland and Neotropical/Asian Palaeotropical assemblages of myxomycetes were compared to test the null hypothesis that neither species diversity nor species composition differs between the two ecoregions. This can be expected if myxomycetes behave as ubiquists and are capable of unlimited long distance dispersal. Location Four pairs (lowland/highland) of comprehensive regional surveys encompassing c. 7500 specimens were compared; these represented Neotropical (Yasuni/Maquipucuna in Ecuador; Guanacaste/Monteverde in Costa Rica) and Asian Palaeotropical forests (Cat Tien/Bi Dup Nui Ba in Vietnam; Chiang Mai in Thailand/South Luzon in the Philippines). Methods Each survey was carried out in an area characterized by relatively homogenous vegetation consisting of natural or near‐natural forests, and incorporated both field collecting and the use of moist chamber cultures, and all observed fructifications were recorded. Analyses of diversity (i.e. richness) and community composition were carried out with EstimateS and R. Results Between 400 and 2500 records per survey were obtained. Species accumulation curves indicated moderate to nearly exhaustive completeness (70–94% of expected species richness recorded). Multivariate analyses suggest that geographical separation (Neotropic versus Palaeotropic) explained the observed differences in composition of myxomycete assemblages better than habitat differences (lowland versus highland forests). Main Conclusion Both geographically restricted morphospecies and differences in myxomycete assemblages provide evidence that myxomycetes are not ubiquists but tend to follow the moderate endemicity hypothesis of protist biogeography.

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Rapid assessment of the distribution of myxomycetes in a southwestern Amazon forest

Cited by 11 publications

References 19 publications

Does elevation influence the distributional patterns of tropical myxomycetes? A case study in Costa Rica

Does elevation influence the distributional patterns of tropical myxomycetes? A case study in Costa Rica

Myxomycete communities occurring in fragmented forest patches in two municipalities of Laguna, Philippines

Biogeographical assessment of myxomycete assemblages from Neotropical and Asian Palaeotropical forests

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