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  1. Article ; Online: A prolonged drought period reduced temporal β diversity of zooplankton, phytoplankton, and fish metacommunities in a Neotropical floodplain

    Diniz, Leidiane Pereira / Petsch, Danielle Katharine / Mantovano, Tatiane / Rodrigues, Luzia Cleide / Agostinho, Angelo Antonio / Bonecker, Claudia Costa

    Hydrobiologia. 2023 Mar., v. 850, no. 5 p.1073-1089

    2023  

    Abstract: Extreme climate events and the damming of natural rivers can intensify the effects of droughts and floods, which can consequently affect aquatic biota. We investigated whether a prolonged drought increased the similarity of aquatic metacommunities over ... ...

    Abstract Extreme climate events and the damming of natural rivers can intensify the effects of droughts and floods, which can consequently affect aquatic biota. We investigated whether a prolonged drought increased the similarity of aquatic metacommunities over time when compared to a period with extreme flood events in 10 floodplain lakes. We expected to find (i) lower temporal environmental variability and lower β diversity among months during the prolonged drought period, and (ii) a more pronounced decrease in β diversity for aquatic organisms with active dispersal (fish) than for small organisms with passive dispersal (phytoplankton and zooplankton) during the prolonged drought period. We estimated the β diversity among months using the Sørensen and Bray–Curtis dissimilarities and their components separately for each lake and each period. We used paired t tests to compare the periods. Although the prolonged drought reduced environmental variability, the homogenization of biota was dependent on the considered β diversity component. In the face of climate change and a higher frequency of severe droughts, biotic variability can decrease over time, thereby changing the dynamics of floodplain ecosystems. We emphasize the importance of natural flood events for maintaining environmental variability and ecosystem functioning in floodplains.
    Keywords Neotropics ; climate ; climate change ; drought ; ecosystems ; fish ; floodplains ; homogenization ; lakes ; phytoplankton ; zooplankton
    Language English
    Dates of publication 2023-03
    Size p. 1073-1089.
    Publishing place Springer International Publishing
    Document type Article ; Online
    ZDB-ID 214428-1
    ISSN 1573-5117 ; 0018-8158
    ISSN (online) 1573-5117
    ISSN 0018-8158
    DOI 10.1007/s10750-023-05140-7
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

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  2. Article: Zooplankton β diversity dynamics and metacommunity structure depend on spatial and temporal scales in a Neotropical floodplain

    Diniz, Leidiane Pereira / Petsch, Danielle Katharine / Bonecker, Claudia Costa

    Freshwater biology. 2021 July, v. 66, no. 7

    2021  

    Abstract: Both β diversity and metacommunity structure vary in time and space. It is necessary to examine different scales, especially in the face of extreme hydrological conditions. We investigated seasonal variation in β diversity and Elements of Metacommunity ... ...

    Abstract Both β diversity and metacommunity structure vary in time and space. It is necessary to examine different scales, especially in the face of extreme hydrological conditions. We investigated seasonal variation in β diversity and Elements of Metacommunity Structure [EMS] of zooplankton during four years (two years of prolonged drought and two years with extreme flood events) and at two spatial scales (sub‐basins and floodplain; smaller and larger spatial scale, respectively). We sampled 29 lakes quarterly during four years in the Upper Paraná River floodplain, Brazil. We estimated the replacement component of β diversity using the Jaccard dissimilarity index. We also used EMS to determine the metacommunity pattern of zooplankton distribution in each period and spatial scale. The flood peak observed in the snapshot sampling drove the homogenization of zooplanktonic assemblages. However, β diversity was not reduced in the two years with extreme flood events compared to the period of prolonged drought at either of the spatial scales (floodplain and sub‐basins), except for a single sub‐basin. This finding shows the importance of longer‐term ecological studies to better capture the dynamics of the zooplanktonic metacommunity. Regardless of the hydrological period and spatial scale zooplanktonic metacommunity structure remained practically constant throughout the four years, with a predominance of species range turnover (Clementsian). At the smallest spatial scale (sub‐basins), we found quasi‐structural patterns (quasi‐Clementsian and quasi‐Gleasonian). The predominance of the Clementsian pattern suggests that the associations of zooplankton species in the floodplain responded similarly to the environmental gradient and that the responses differed among species groups. Over time, the smaller spatial scale (sub‐basin) better represents the dynamics of β diversity than the larger spatial scale (floodplain), and better represents the structure of the zooplankton metacommunity. However, we emphasize the need for further studies to consider different biological groups and larger spatial scale over time to maximize the understanding of aquatic metacommunities dynamics. ​
    Keywords Neotropics ; drought ; floodplains ; homogenization ; hydrology ; limnology ; rivers ; seasonal variation ; zooplankton ; Brazil
    Language English
    Dates of publication 2021-07
    Size p. 1328-1342.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note NAL-AP-2-clean ; JOURNAL ARTICLE
    ZDB-ID 121180-8
    ISSN 0046-5070
    ISSN 0046-5070
    DOI 10.1111/fwb.13719
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 77/704: Show issues

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  3. Article: Bird feet morphology drives the dispersal of rotifers and microcrustaceans in a Neotropical temporary pond

    de Morais Junior, Cláudio Simões / de Melo Júnior, Mauro / Diniz, Leidiane Pereira / Elmoor-Loureiro, Lourdes Maria Abdu / Gonçalves-Souza, Thiago / Sousa, Francisco Diogo Rocha

    Aquatic sciences. 2019 Oct., v. 81, no. 4

    2019  

    Abstract: The present study aimed to determine zooplankton diversity and composition through a laboratory simulation of dispersal by morphologically different birds’ feet (large, small and webbed anisodactylous feet) and by comparing them between different water ... ...

    Abstract The present study aimed to determine zooplankton diversity and composition through a laboratory simulation of dispersal by morphologically different birds’ feet (large, small and webbed anisodactylous feet) and by comparing them between different water accumulation phases. We hypothesized that large anisodactylous birds, because of their larger size, can disperse a higher number of species. A laboratory experiment with zooplankton dispersal simulation by birds’ feet was carried out, using dry sediments collected at different past phases of water accumulation in a temporary pond, which represent the flood (upper egg bank) and drought (lower egg bank), intending to evaluate differences in species richness between these phases. The lower egg bank showed higher species richness (42 species) while the samples from upper egg banks presented almost the same number of species (35 or 36 at each one). The number of eggs carried on each footprint model (treatment) was different, and it was higher for large anisodactyl feet with 46 species, supporting the hypothesis of the study. Furthermore, the species compositions carried by footprint models were different from one other. In addition, some species were specific from each footprint model. We conclude that birds can disperse a large number of dormant zooplankton, acting in the dissemination of local species.
    Keywords animal morphology ; birds ; drought ; eggs ; feet ; laboratory experimentation ; models ; Neotropics ; Rotifera ; sediments ; species dispersal ; species richness ; zooplankton
    Language English
    Dates of publication 2019-10
    Size p. 69.
    Publishing place Springer International Publishing
    Document type Article
    ZDB-ID 1464021-1
    ISSN 1420-9055 ; 1015-1621
    ISSN (online) 1420-9055
    ISSN 1015-1621
    DOI 10.1007/s00027-019-0666-8
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Description of a new species of the costata-group (Cladocera, Chydoridae, Aloninae) from Brazil.

    Sousa, Francisco Diogo R / Santos, Sandro / Güntzel, Adriana Maria / Diniz, Leidiane Pereira / De Melo Júnior, Mauro / Elmoor-Loureiro, Lourdes M A

    Zootaxa

    2015  Volume 4040, Issue 4, Page(s) 445–457

    Abstract: The aim of this study is to describe a new species of the costata-group from Brazil. Alona margipluma sp. nov. shares morphological traits with A. costata Sars, 1862, A. natalensis Sinev, 2008, and A. cheni Sinev, 1999, but differs from them in: (i) thin ...

    Abstract The aim of this study is to describe a new species of the costata-group from Brazil. Alona margipluma sp. nov. shares morphological traits with A. costata Sars, 1862, A. natalensis Sinev, 2008, and A. cheni Sinev, 1999, but differs from them in: (i) thin setulae between the marginal setae on the valves, (ii) setae 4-5 on the exopodite of limb III long and different in length, (iii) bottle-shaped sensillum on the basal endite of limb IV. For identification of Alona margipluma sp. nov. it is necessary to check carefully the main head pores and postabdomen characters since the former superficially resemble A. iheringula, A. setigera and Alona guttata.
    MeSH term(s) Animal Distribution ; Animal Structures/anatomy & histology ; Animal Structures/growth & development ; Animals ; Body Size ; Brazil ; Cladocera/anatomy & histology ; Cladocera/classification ; Cladocera/growth & development ; Ecosystem ; Female ; Male ; Organ Size
    Language English
    Publishing date 2015-11-12
    Publishing country New Zealand
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1175-5334
    ISSN (online) 1175-5334
    DOI 10.11646/zootaxa.4040.4.4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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