Do taxonomic, phylogenetic and functional plant α- and β-diversity reflect environmental patterns in the Lower Paraná River floodplain?

Morandeira, Natalia Soledad; Kandus, Patricia

doi:10.1080/17550874.2017.1315838

Cited by 12 publications

(18 citation statements)

References 66 publications

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“…Seasonal waterbird communities constitute an excellent model system for inferring the importance of temporal variation in assembly mechanisms from phylogenetic and functional diversity patterns (Fu et al., ; Morandeira & Kandus, ). In subtropical wetlands, waterbird habitat is significantly influenced by predictable climatic cycles and associated changes in available resources (Cronk & Fennessy, ).…”

Section: Introductionmentioning

confidence: 99%

Seasonal dynamics of waterbird assembly mechanisms revealed by patterns in phylogenetic and functional diversity in a subtropical wetland

Che

Chen²,

Zhang³

et al. 2019

Biotropica

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Despite growing interest in using phylogenetic and functional methods to understand community assembly, few studies have examined how these methods can be used to assess seasonal variation in assembly mechanisms among migrant species.Migration can rapidly alter the relative influence of stochastic processes, species interactions, or environmental factors in shaping communities across seasons. Here, we describe seasonal dynamics in the phylogenetic and functional diversity of waterbirds in Mai Po Wetland, a subtropical region with significant and predictable temporal variation in climate and migratory bird density. Phylogenetic α diversity varied seasonally, exhibiting a clustered structure (indicative of environmental filtering) in summer, and over-dispersed structure (indicative of biotic filtering) in winter.Phylogenetic diversity in spring and autumn exhibited a more intermediate, random structure, consistent with stochastic arrivals and departures of migrants. Functional diversity was clustered in spring but showed over-dispersion in the other three seasons. Phylogenetic β diversity in summer and winter assemblages was characterized by two distinct groups, while spring and autumn assemblages were mixed. Our results suggest that waterbird assemblages were primarily shaped by interspecific competition in winter, while random processes tended to shape assemblages in spring and fall. Environmental factors played a more important role in summer, during periods of high heat stress. In addition, species co-occurrence patterns were significantly more strongly related to phylogenetic similarity in winter than in summer. Our results suggest that the relative importance of assemblage mechanisms can vary seasonally in response to changing environmental conditions, suggesting that studies attempting to infer a single dominant assembly mechanism may ignore important assembly processes. Temporal shifts in assembly mechanisms may play an important role in maintaining diversity in subtropical and temperate wetlands and perhaps also in other dynamic systems.

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Section: Introductionmentioning

confidence: 99%

Seasonal dynamics of waterbird assembly mechanisms revealed by patterns in phylogenetic and functional diversity in a subtropical wetland

Che

Chen²,

Zhang³

et al. 2019

Biotropica

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“…Previous studies on β‐diversity of freshwater macrophytes have focused mainly on local environmental and spatial factors as the main drivers of community variation (Morandeira & Kandus, ). Other relevant conditions, such as the geomorphological and hydrological aspects of the landscape (which are supposed to be the main drivers of floodplain communities), have received less attention.…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, this traditional observation does not apply to rare species either, such as Phyllantus fluitans and Echinodorus grandiflorus , which have relatively localized distributions. However, it is worth noting that in the Lower Paraná River floodplain, geographical distance played a minor role to explain macrophyte β‐diversity (Morandeira & Kandus, ), indicating that the role of different mechanisms in spatial changes in macrophyte communities may vary even in different stretches of the same river or using different metrics to measure spatial structure.…”

Section: Discussionmentioning

confidence: 99%

“…In river–floodplain systems, habitat heterogeneity sets β‐diversity patterns in macrophytes by favoring some species or functional groups over others (Boschilia, Oliveira, & Schwarzbold, ; Morandeira & Kandus, ; Schneider, Cunha, Marchese, & Thomaz, ). For example, changes in water transparency, from turbid (during floods) to clear (during droughts), can lead to a replacement (turnover) of floating by submerged species.…”

Section: Introductionmentioning

confidence: 99%

“…From the perspective of applied ecology, knowing the patterns in biodiversity, including its alpha and beta components, is essential for accurate management and conservation of macrophytes and their ecosystem services as well as for environmental assessments in response to human changes. Although macrophytes have important ecological roles, according to our knowledge, very few papers address how geographical distance and environmental dissimilarity are associated with different components of β‐diversity of macrophytes in a floodplain (Morandeira & Kandus, ; Padial et al., ). Our study contributes to filling this gap by investigating how β‐diversity of macrophytes is simultaneously related to environmental, spatial and hydrological variables in a relatively unaltered large river–floodplain ecosystem (Middle Paraná River, Argentina).…”

Section: Introductionmentioning

confidence: 99%

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The importance of local environmental, hydrogeomorphological and spatial variables for beta diversity of macrophyte assemblages in a Neotropical floodplain

Schneider

Cunha

Espínola

et al. 2019

J Vegetation Science

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Questions Understanding the processes that determine the variation in community composition (β‐diversity) is a major challenge in ecology, evolution, and conservation. Here we assess the importance of abiotic variables associated with local environmental features, hydrogeomorphology, and space to explain β‐diversity patterns in macrophytes by addressing the following questions: (1) Which are the sets of environmental, hydrogeomorphological, and spatial variables that contribute significantly to the spatial variation of macrophytes? (2) Which are their relative contributions to explaining the total β‐diversity, nestedness and turnover of macrophyte assemblages? Study Site Middle Paraná River floodplain, Argentina. Methods We sampled 20 lakes at low and high water levels in the Middle Paraná River floodplain. To investigate the relationship of total β‐diversity, turnover and nestedness with explanatory variables, we used the constrained analysis of principal coordinates (CAP). We used variation partitioning to assess the proportion of the variation related to each subset of variables (environmental, hydrogeomorphological and spatial). Results Among four alternatives considered to explain the spatial structure, the distance between lakes by watercourses best described the spatial organization of β‐diversity. Species turnover was largely explained by hydrogeomorphological variables, followed by spatial descriptors, whereas nestedness was exclusively related to spatial variables. Conclusions In the Middle Paraná River floodplain β‐diversity of macrophyte communities is partly shaped by turnover (mainly driven by the hydrogeomorphology of the floodplain) and nestedness (resulting from dispersal limitation by watercourses), but it also seems to be randomly organized (possibly because of random colonization and extinction, due to disturbances such as floods). Our work indicates that environmental pressures reflect differences between macrophyte communities of lakes with different geomorphological and hydrographical conditions. This suggests that certain ecological processes (such as species sorting) are driven at a higher degree by hydrogeomorphology than by local environment.

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Multiple facets of macrophyte beta diversity are shaped by environmental factors, directional spatial processes, and connectivity across tropical floodplain lakes in the dry season

et al. 2021

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Do taxonomic, phylogenetic and functional plant α- and β-diversity reflect environmental patterns in the Lower Paraná River floodplain?

Cited by 12 publications

References 66 publications

Seasonal dynamics of waterbird assembly mechanisms revealed by patterns in phylogenetic and functional diversity in a subtropical wetland

Seasonal dynamics of waterbird assembly mechanisms revealed by patterns in phylogenetic and functional diversity in a subtropical wetland

The importance of local environmental, hydrogeomorphological and spatial variables for beta diversity of macrophyte assemblages in a Neotropical floodplain

Multiple facets of macrophyte beta diversity are shaped by environmental factors, directional spatial processes, and connectivity across tropical floodplain lakes in the dry season

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