Spatiotemporal ecological drivers of an aquatic plant community in a temporary tropical pool

Ferreira, Felipe Segala; Tabosa, Alyne Bezerra; Gomes, Raimundo Bemvindo; Martins, Fernando Roberto; Matias, Lígia Queiroz

doi:10.1016/j.jaridenv.2015.01.001

Cited by 6 publications

(15 citation statements)

References 31 publications

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“…Since plant height is known to be a proxy of plant species competitive ability for light (Violle et al ), this suggests an increase in competition between crop and weeds over the cropping season, mediated by climatic conditions. This is in agreement with a previous study investigating macrophyte community assemblies in temporary ponds, which showed that interspecific competition was a fundamental ecological driver which interacted with environmental filtering to shape the community assembly over time (Ferreira et al ). After the initial colonization, environmental filtering and biotic interaction should become gradually more important and drive the relative abundance of the species (Boulangeat et al ).…”

Section: Discussionsupporting

confidence: 93%

“…High temporal variations in the habitat patch's availability and suitability are notably found in temporary ponds, which are ephemeral habitat patches’ (Jeffries , Ferreira et al ), or in deserts (Venable ) and agricultural landscapes (Reigada et al ), both sheltering ephemeral habitats patches where environmental conditions allowing species to establish and successfully reproduce have restricted limited period of existence. Ephemeral habitat patches are characterized by a high proportion of species with resting stages, such as resting eggs for some planktonic crustaceans (Jeffries ) or dormant seeds for annual plants (Venable ), which form a local species pool (e.g.…”

mentioning

confidence: 99%

“…Additionally, the habitat patch suitability, both in terms of abiotic environmental factors and biotic interactions, such as competition, may further shape community assembly in these habitats either by favoring or being less suitable for species. The effect of patch suitability on community assemblies may increase with the duration for which the patch is available (Ferreira et al ). As a result, the temporal variation of patch availability and patch suitability directly affects the composition of the propagule reservoir (Jeffries , ), which, in turn, may affect the contemporary community assembly.…”

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confidence: 99%

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Patch dynamics and temporal dispersal partly shape annual plant communities in ephemeral habitat patches

Mahaut

Fried²,

Gaba

2017

Oikos

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Most organisms in ephemeral habitat patches have resting stages which form a local species pool in response to temporal variations in the patch's availability and suitability. Temporal dispersal from the local species pool may, therefore, be an important process shaping the community assembly, particularly soon after patch creation, and possibly interacting with environmental filtering. As the temporal variation of the environmental conditions has a major effect on the composition of the local species pool, we investigated how well contemporary conditions (both patch availability and patch suitability) and temporal dispersal (approximated by environmental temporal variation and temporal distance) explain the changes in community composition in a given locality through successive ephemeral habitat cycles. We used arable weeds in annual crops as models. We calculated temporal weed community dissimilarity indices between weed communities surveyed in cropping seasons at intervals of two to eight years within a given field. The weeds were surveyed twice each cropping season to account for any changes in the relative contributions of temporal dispersal and contemporary conditions during the season. Patch availability explained most of the temporal weed dissimilarity, suggesting that patch dynamics have the greatest effect on weed community assembly. Temporal distance and temporal variation of the environmental conditions had more effect at the start of the cropping season than later, while patch suitability had more effect in the middle of the season. These results suggest that temporal dispersal drives the weed community assembly when ephemeral habitat patches are created. These assemblies are further shaped by environmental filtering. This is consistent with a temporal source sink dynamic mechanism where the seed bank acts as the main weed source. However, a large part of temporal weed dissimilarity remains unexplained, suggesting that other ecological processes such as spatial dispersal and founder effect may also shape the weed community.

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Section: Discussionsupporting

confidence: 93%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Patch dynamics and temporal dispersal partly shape annual plant communities in ephemeral habitat patches

Mahaut

Fried²,

Gaba

2017

Oikos

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“…Aquatic plant richness is related to other environmental factors in lentic systems (Alahuhta et al 2014;Ferreira et al 2015), which makes it difficult to generalize about the diversity of these ecosystems (Bubíková & Hrivnák 2018). However, it is possible to observe that there is a set of exclusive species that are evolutionarily associated with these ecosystems.…”

Section: Discussionmentioning

confidence: 99%

“…However, the conclusions about the patterns of diversity in these regions can differ widely depending on the taxon analysed and the peculiarities of the geographical areas (MacKay 1991). If we consider that in temporary pools, the spatial structure of the aquatic plant community changes significantly during the rainy season according to the stage of flooding (Ferreira et al 2015), would the diversity of aquatic plants in the semiarid region be differentiated between the lentic and lotic systems?…”

Section: Introductionmentioning

confidence: 99%

Breaking the misconception of a dry and lifeless semiarid region: the diversity and distribution of aquatic flora in wetlands of the Brazilian Northeast

Matias¹,

Guedes²,

Nascimento³

et al. 2021

Acta Bot. Bras.

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The semiarid region of northeastern Brazil possesses a set of wetlands characterized by hydrographic basins with deficient drainage networks, a few large and permanent lotic systems and several permanent and temporary lagoons. Aquatic plants are widely distributed in these wetlands and the present study aims to determine if those of Ceará state have similar species compositions and differences in species richness. We hypothesized that lentic ecosystems would have more species and different growth forms of aquatic angiosperms than lotic ecosystems. A total of 1619 records of aquatic angiosperms in 43 wetland areas were analysed. The most representative families were Cyperaceae, Poaceae, Fabaceae, Alismataceae, Malvaceae, Nymphaeaceae and Pontederiaceae. Most of the species are helophytes and bottom-rooted emergent hydrophytes. Permanent lentic ecosystems had the highest number of exclusive species (27.85 %), followed by temporary lentic ecosystems (20.54 %). Contrary to our hypothesis, the different aquatic ecosystems were found to possess distinct species compositions and different proportions of growth forms, and all wetland types contributed to the macrophyte richness of the study area, although they differ in species richness. Therefore, conservation plans for the native aquatic macrophyte biota should include all wetland ecosystems in the semiarid state of Ceará.

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Influence of climatic variables on CSR strategies of aquatic plants in a semiarid region

2019

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Temporary pools in semiarid regions are influenced by climatic seasonality and the extremes of moisture/desiccation effects influence mechanisms for plant survival, which should be analyzed based on competitor (C), ruderal (R), or stress tolerator (S) strategies. The aim of the present study was to evaluate how aridity exerts an influence on CSR functional groups of aquatic plants in temporary pools. Aquatic plants were sampled from 27 temporary pools in areas with a climatic gradient of evaporation, precipitation, and temperature. The distribution of functional groups along the environmental gradient was analyzed through redundancy analysis and patterns of CSR strategies were analyzed using linear correlation. We found that assemblages of macrophyte ponds were composed mainly of intermediate R/CR strategies. Evaporation exerted a positive influence on the occurrence of species with larger specific leaf area and a negative influence on the occurrence of taller species. Moreover, ponds in regions with greater evaporation had greater species richness (r 2 = 0.2, P \ 0.01). The same was found for competitors (r 2 = 0.2, P \ 0.01) but not for ruderal or tolerant classes. In conclusion, climatic conditions influence CSR classes and exert a specific influence on the specific functional traits of species in temporary pools of semiarid regions.

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Spatiotemporal ecological drivers of an aquatic plant community in a temporary tropical pool

Cited by 6 publications

References 31 publications

Patch dynamics and temporal dispersal partly shape annual plant communities in ephemeral habitat patches

Patch dynamics and temporal dispersal partly shape annual plant communities in ephemeral habitat patches

Breaking the misconception of a dry and lifeless semiarid region: the diversity and distribution of aquatic flora in wetlands of the Brazilian Northeast

Influence of climatic variables on CSR strategies of aquatic plants in a semiarid region

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