Distribution Pattern of Trait-Based Community Assembly for Cyclobalanopsis Glauca in the Guilin Karst Mountainous Areas, China

Cyclobalanopsis glauca is one of the most dominant species in the late succession stage of plant communities in the Guilin karst mountainous areas of China. In order to explore its role in community assembly and adaptation strategies, we quantified three continuous traits (LA, SLA and WD) for 52 woody species and documented community composition for 20 plots across different habitat conditions. We performed a trait-gradient analysis to partition species trait values between alpha and beta components within and between communities. Alpha trait components consistently varied more widely than beta components, which suggests that much of the trait variation between species was associated with different functional strategies within a shared environment. The different correlation structures for alpha and beta components reflects community assembly processes at different scales. The alpha components were largely uncorrelated with the exception of SLA and WD, while the beta components showed significant correlations along the environmental gradient. There is a significant positive correlation between LA and SLA and significant negative correlations between both LA and WD as well as between SLA and WD. These results demonstrate that slow-growing species with high resource-use efficiency gradually became the dominant species in the late successional stage for Cyclobalanopsis glauca forest and co-occurring species in the same community employ different trait assemblies.

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Role of the Dominant Species on the Distributions of Neighbor Species in a Subtropical Forest

Forests ◽

10.3390/f11030352 ◽

2020 ◽

Vol 11 (3) ◽

pp. 352

Author(s):

Shiguang Wei ◽

Lin Li ◽

Juyu Lian ◽

Scott E. Nielsen ◽

Zhigao Wang ◽

...

Keyword(s):

Community Assembly ◽

Dominant Species ◽

Scale Effects ◽

Southern China ◽

Spatial Scales ◽

Null Model ◽

Subtropical Forest ◽

Successional Stage ◽

Species Groups

Understanding the role of dominant species in structuring the distribution of neighbor species is an important part of understanding community assembly, a central goal of ecology. Phylogenetic information helps resolve the multitude of processes driving community assembly and the importance of evolution in the assembly process. In this study, we classified species in a 20-ha subtropical forest in southern China into groups with different degrees of phylogenetic relatedness to the dominant species Castanopsis chinensis. Species surrounding individuals of C. chinensis were sampled in an equal area annulus at six spatial scales, counting the percent of relatives and comparing this to permutation tests of a null model and variance among species groups. The results demonstrated that dominant species affected their relatives depending on community successional stage. Theory would predict that competitive exclusion and density-dependence mechanisms should lead to neighbors that are more distant in phylogeny from C. chinensis. However, in mature forests distant relatives were subjected to competitive repulsion by C. chinensis, while environment filtering led to fewer distant species, regardless of scale. A variety of biological and non-biological factors appear to result in a U-shaped quantitative distribution determined by the dominant species C. chinensis. Scale effects also influenced the dominant species. As a dominant species, C. chinensis played an important role in structuring the species distributions and coexistence of neighbor species in a subtropical forest.

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Faculty Opinions recommendation of Limited effects of dominant species population source on community composition during community assembly.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.718000082.793474166 ◽

2013 ◽

Author(s):

Scott Collins

Keyword(s):

Community Composition ◽

Community Assembly ◽

Dominant Species ◽

Species Population ◽

Population Source

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Species Composition and Development of Second-Growth Hardwood Stands in Quebec

The Forestry Chronicle ◽

10.5558/tfc44031-6 ◽

1968 ◽

Vol 44 (6) ◽

pp. 31-35 ◽

Cited By ~ 2

Author(s):

Carl H. Winget

Keyword(s):

Species Composition ◽

Dominant Species ◽

Sugar Maple ◽

Woody Species ◽

Balsam Fir ◽

Black Cherry ◽

Minor Components ◽

White Ash ◽

Second Growth ◽

Cutting Intensity

Second-growth, tolerant hardwood stands developed rapidly and, almost entirely from shade-tolerant advance growth, regardless of cutting intensity. Non-commercial woody species were seldom important competitors. Sugar maple, associated with beech on upland and balsam fir on lowland sites, was the dominant species. Yellow birch, basswood and hemlock, important contributors to wood volumes harvested, were minor components of second-growth stands. Valuable minor species such as red oak, white ash, and black cherry had practically disappeared. The application of known techniques for regenerating disturbance-dependent species is urgently required.

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Colonization patterns of Nematoda on decomposing algae in the estuarine environment: Community assembly and genetic structure of the dominant species Pellioditis marina

Limnology and Oceanography ◽

10.4319/lo.2007.52.3.0992 ◽

2007 ◽

Vol 52 (3) ◽

pp. 992-1001 ◽

Cited By ~ 27

Author(s):

S. Derycke ◽

R. Van Vynckt ◽

J. Vanoverbeke ◽

M. Vincx ◽

T. Moens

Keyword(s):

Genetic Structure ◽

Community Assembly ◽

Dominant Species ◽

Estuarine Environment ◽

Colonization Patterns

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Autochthonous woody species suitable for bioengineering in mountainous areas of central Italy

AGROCHIMICA ◽

10.12871/00021857202036 ◽

2020 ◽

pp. 283-296

Author(s):

N. Bazzichi ◽

A. Toffanin ◽

F. Panelli ◽

F. Cinelli

Keyword(s):

Central Italy ◽

Woody Species ◽

Mountainous Areas

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Notes on Succession in Old Fields in Southeastern Ontario: the Herbs

The Canadian Field-Naturalist ◽

10.22621/cfn.v121i2.444 ◽

2007 ◽

Vol 121 (2) ◽

pp. 182

Author(s):

A. Crowder ◽

R. Harmsen ◽

S. E. Blatt

Keyword(s):

Species Richness ◽

Host Plant ◽

Plant Cover ◽

Woody Species ◽

Old Fields ◽

Solidago Canadensis ◽

Minor Components ◽

Successional Stage ◽

Adventive Species ◽

Herbaceous Community

Vegetation in abandoned hayfields was monitored during 1976-1998. An earlier successional stage followed ploughing. Changes in tree, shrub and vine populations have been reported earlier and showed expected increases in species richness and cover. Highest species richness of herbs occurred three years after ploughing. Non-woody species richness trended irregularly downward, while non-woody cover was variable, peaking in 1987. Within the herbaceous community, year-to-year changes in cover and frequency of species in the following selected groups are reported here: 18 grasses including sown and adventive species; 13 legumes including two sown species; 14 macroforbs of the Compositae, including a goldenrod, Solidago canadensis, which dominated parts of the fields; a rosette weed, Taraxacum officinalis; sedges, horsetails and some other minor components. Grasses and goldenrods were grazed, sometimes intensively and repeatedly, by insects; grasses were impacted by skipper larvae (Thymelicus lineola), and goldenrods by beetle larvae (Trirhabda spp.). Effects of repeated outbreaks on host plant cover are shown for two plots (100 m2) matching the scale of outbreaks.

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Examining variation in the leaf mass per area of dominant species across two contrasting tropical gradients in light of community assembly

Ecology and Evolution ◽

10.1002/ece3.2281 ◽

2016 ◽

Vol 6 (16) ◽

pp. 5674-5689 ◽

Cited By ~ 13

Author(s):

Margot Neyret ◽

Lisa Patrick Bentley ◽

Imma Oliveras ◽

Beatriz S. Marimon ◽

Ben Hur Marimon‐Junior ◽

...

Keyword(s):

Community Assembly ◽

Dominant Species ◽

Leaf Mass Per Area ◽

Leaf Mass

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Deep-Sea Nematodes of the Mozambique Channel: Evidence of Random Community Assembly Dynamics in Seep Sediments

Frontiers in Marine Science ◽

10.3389/fmars.2021.549834 ◽

2021 ◽

Vol 8 ◽

Author(s):

Lara Macheriotou ◽

Annelien Rigaux ◽

Karine Olu ◽

Daniela Zeppilli ◽

Sofie Derycke ◽

...

Keyword(s):

Community Structure ◽

Community Assembly ◽

Deep Sea ◽

Cold Seeps ◽

Reference Area ◽

Successional Stage ◽

Stochastic Sampling ◽

Phylogenetic Community Structure ◽

Mozambique Channel ◽

Occurrence Patterns

Cold seeps occur globally in areas where gases escape from the seafloor, occasionally resulting in the formation of topographic depressions (pockmarks), characterised by unique physicochemical conditions such as anoxic and sulphuric sediments. Free-living marine nematodes tend to dominate the meiofaunal component in such environments, often occurring at extremely high densities and low richness; the mechanisms defining community assembly in areas of fluid seepage, however, have received little attention. Here we focus on a low-activity pockmark at 789 m in the Mozambique Channel (MC). We assessed the diversity, co-occurrence patterns and phylogenetic community structure of nematodes at this bathyal site to that of a nearby reference area as well as abyssal sediments using metabarcoding. In addition, we compared our molecularly-derived diversity estimates to replicate samples identified morphologically. Overall, nematode Amplicon Sequence Variants (ASVs) and generic richness were similar between Pockmark and Abyssal sediments, but lower compared to the Reference area. Although more than half the genera were shared, over 80% of ASVs were unique within each area and even within each replicate core. Even though both methodologies differentiated the Pockmark from the Reference and Abyssal sites, there was little overlap between the molecularly and morphologically identified taxa, highlighting the deficit of reference sequences for deep-sea nematodes in public databases. Phylogenetic community structure at higher taxonomic levels was clustered and did not differ between the three areas yet analysis within three shared and dominant genera (Acantholaimus, Desmoscolex, Halalaimus), revealed randomness with respect to phylogeny as well as co-occurrence which was exclusive to the Pockmark area. These patterns point to the influence of neutral dynamics at this locality resulting from the stochastic sampling of early colonizing taxa, the successional stage at sampling and/or the functional redundancy within the investigated genera.

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Grassland restoration reveals the importance of ecotypic variation on community assembly along a longitudinal aridity gradient

10.14293/s2199-1006.1.sor-.pphlwka.v1 ◽

2021 ◽

Author(s):

Zhe Ren ◽

David Gibson ◽

Sara Baer ◽

Loretta Johnson ◽

Laurel Wilson

Keyword(s):

Great Plains ◽

Community Assembly ◽

Dominant Species ◽

Block Design ◽

Wide Distribution ◽

Community Diversity ◽

Sorghastrum Nutans ◽

Aridity Gradient ◽

Ecotypic Variation ◽

Grassland Ecosystems

Two dominant species, Andropogon gerardii and Sorghastrum nutans, have a wide distribution across the Great Plains (USA) and are widely used in restorations. We ask: Do dominant species' ecotypes influence community diversity and structure evenly across a longitudinal aridity gradient? We established reciprocal common gardens at four sites across the gradient. Ecotypes of the two dominant species were seeded along with a prairie seed mix according to a randomized complete block design. Species composition was measured after 3 and 10 years. We used linear mixed models to analyze the effect of the ecotype and year on community diversity. NMDS and PERMANOVA were applied to examine the contribution of ecotype to community structure. Results showed that ecotype significantly affected species richness and shaped taxonomic, phylogenetic, and functional diversity. Accordingly, restorations should consider ecotypic variation as a critical biological filter to community assembly in grassland ecosystems.

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