LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 5 of total 5

Search options

  1. Article ; Online: Bycatch of Asteroidea from shrimp trawl fishery in the southwestern Atlantic Ocean - Brazil

    Meriane dos Santos Paula / Roberta Freitas / Rannyele Passos Ribeiro / Carlos Alberto de Moura Barboza / Christine Ruta

    Papéis Avulsos de Zoologia, Vol

    2022  Volume 62

    Abstract: Abstract Shrimp trawling is considered a significant negative impact on the marine ecosystem, especially on the benthic community. Sea stars (Echinodermata: Asteroidea) are one of the most affected groups by unintentional catches. This study was ... ...

    Abstract Abstract Shrimp trawling is considered a significant negative impact on the marine ecosystem, especially on the benthic community. Sea stars (Echinodermata: Asteroidea) are one of the most affected groups by unintentional catches. This study was performed at the Santana Archipelago, a Marine Protected Area in the northern region of Rio de Janeiro State, between 2008-2009. Sea stars accidentally caught by trawling were collected during open and closed season of the shrimp fisheries (Xiphopenaeus kroyeri) at depths of 5-60 m. A generalized linear zero-inflated model was applied to test for differences in capture between fishing seasons and depths. A total of 158 sea star specimens were captured. These specimens were identified as Asterina stellifera, Astropecten acutiradiatus, Astropecten brasiliensis, Astropecten cingulatus, Luidia alternata alternata, Luidia clathrata, Luidia ludwigi scotti, Luidia senegalensis. The sea stars A. brasiliensis and L. senegalensis are currently considered as vulnerable species in the Brazilian official list of threatened species. The higher capture of sea stars was shown in deepest areas, and there was no significant difference in the number of specimens between seasons. This is the first study about asteroids accidentally captured by shrimp trawling.
    Keywords Benthos ; Echinoderms ; Fishing ; Xiphopenaeus kroyeri ; Zoology ; QL1-991
    Subject code 551
    Language English
    Publishing date 2022-05-01T00:00:00Z
    Publisher Universidade de São Paulo
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  2. Article ; Online: Daily Variation on Soil Moisture and Temperature on Three Restinga Plant Formations

    Anderson da Rocha Gripp / Jorge Gabriel Fernandes Genovez / Quézia Souza dos Santos / Luís Eduardo Guerra Domingos Nogueira / Carlos Alberto de Moura Barboza / Francisco de Assis Esteves / Rodrigo Lemes Martins

    Air, Soil and Water Research, Vol

    2023  Volume 16

    Abstract: Restinga forests and open scrubby formations establish on sandy well-drained soils alongside the Brazilian coastline. Restinga plants are exposed to extreme conditions and vegetation types are mainly structured by species access to groundwater. But to ... ...

    Abstract Restinga forests and open scrubby formations establish on sandy well-drained soils alongside the Brazilian coastline. Restinga plants are exposed to extreme conditions and vegetation types are mainly structured by species access to groundwater. But to date, no systematic evaluations have been done in order to characterize soil microclimatic conditions and understand how they are associated with variations in climatic drivers. We evaluated hourly soil moisture and temperature along 84 days at Restinga Seasonal Dry Forest (SDF), sparse (Open Clusia Scrubs—OCS), and dense (Open Ericacea Scrubs—OES) tickets at Restinga de Jurubatiba National Park, at Rio de Janeiro state (Brazil). Due to distinctions on physical structure and access to groundwater between plant formations, we expected higher daily soil moisture and lower daily moisture and temperature variations on forests than on open vegetated areas. Daily soil moisture was higher, respectively, on SDF, OES, and OCS, whereas soil moisture and temperature variability presented the opposite trend (SDF < OES < OCS), supporting our hypotheses. Daily soil temperature dynamics are quite well predicted by solar radiation incidence patterns, whereas daily soil moisture is mainly regulated by precipitation at OCS, an interaction of precipitation and temperature at OES and delayed effects of precipitation at SDF. Our results corroborate our expectations that forests are more effective in buffering both air temperature and precipitation effects on soil conditions than open vegetated areas. They also indicate that soil moisture and temperature conditions are important aspects differentiating Restinga vegetation types.
    Keywords Environmental sciences ; GE1-350
    Subject code 550
    Language English
    Publishing date 2023-02-01T00:00:00Z
    Publisher SAGE Publishing
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article: Long-term decline of brown algal assemblages from southern Brazil under the influence of a nuclear power plant

    Széchy, Maria Teresa Menezes de / Carlos Alberto de Moura Barboza / Victor de Souza Koutsoukos

    Ecological indicators. 2017 Sept., v. 80

    2017  

    Abstract: We investigated long-term trends in brown macroalgal assemblages inhabiting shallow subtidal rocky bottoms under the influence of thermal effluent discharge from the Brazilian nuclear power plant (BNPP). Three operational periods based on the units of ... ...

    Abstract We investigated long-term trends in brown macroalgal assemblages inhabiting shallow subtidal rocky bottoms under the influence of thermal effluent discharge from the Brazilian nuclear power plant (BNPP). Three operational periods based on the units of the BNPP were analysed: T0=pre-operational, between the years 1980 and 1983; T1=operational period of unit 1, between 1988 and 1999; and T2=operational period of units 1 and 2, between 2005 and 2012. Using generalized linear mixed models (GLMMs), we found significant declines in the numbers of genera and species over time. More than half of the species of brown macroalgae disappeared during T2. In addition, the numbers of macroalgal genera and species were inversely related to the local surface seawater temperatures. Multivariate analyses revealed a clear separation between the years of T2 and those of T0, indicating long-term changes in the community assemblages. Among the most common species in the area, the frequencies of Canistrocarpus cervicornis, Dictyopteris delicatula, Hincksia mitchelliae, Sargassum spp. and Sphacelaria tribuloides decreased during T2, while Padina gymnospora maintained rather high yearly frequencies during T2 (>40%). Our data suggest that seawater temperatures consistently higher than 30°C together with peaks higher than 35°C may have triggered the decline in the brown algae on rocky bottoms under the influence of the BNPP discharge. These results from southern Brazil are consistent with studies from other locations that ascribe changes in seaweed diversity to increasing seawater temperatures, highlighting the sensitivity of brown macroalgae to thermal stress and demonstrating their effectiveness as an ecological indicator for monitoring the effects of nuclear power plant effluents on coastal environments.
    Keywords Canistrocarpus cervicornis ; Dictyopteris ; effluents ; Hincksia ; macroalgae ; monitoring ; multivariate analysis ; nuclear power ; Padina ; power plants ; Sargassum ; seawater ; Sphacelaria ; temperature ; thermal stress ; Brazil
    Language English
    Dates of publication 2017-09
    Size p. 258-267.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2036774-0
    ISSN 1872-7034 ; 1470-160X
    ISSN (online) 1872-7034
    ISSN 1470-160X
    DOI 10.1016/j.ecolind.2017.05.019
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 7436: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Article ; Online: The science we need for the beaches we want

    Guilherme Nascimento Corte / Yasmina Shah Esmaeili / Tatiana Fabricio Maria / Leonardo Lopes Costa / Gustavo Mattos / Helio Herminio Checon / Nicole Malinconico / Paulo Cesar Paiva / Paula Debiasi / Tatiana Cabrini / Victor Corrêa Seixas / Eduardo Bulhões / José Souto Rosa Filho / Leonir André Colling / Leonardo Cruz da Rosa / Leonardo Querobim Yokoyama / Ricardo Cardoso / Maíra Pombo / Patricia Luciano Mancini /
    Luciana Yokoyama Xavier / Thuareag Santos / Marcelo Petracco / Ligia Salgado Bechara / Ivan Rodrigo Abrão Laurino / Maikon Di Domenico / Clarisse Odebrecht / Antonio Henrique da Fontoura Klein / Cristina de Almeida Rocha Barreira / Abilio Soares-Gomes / Ilana Rosental Zalmon / Antonia Cecilia Zacagnini Amaral / Alexander Turra / Carlos Alberto de Moura Barboza

    Frontiers in Marine Science, Vol

    frontiers of the flourishing Brazilian ecological sandy beach research

    2023  Volume 10

    Keywords anthropocene ; biodiversity ; socio-ecological systems ; conservation ; management ; ecosystem-based management ; Science ; Q ; General. Including nature conservation ; geographical distribution ; QH1-199.5
    Language English
    Publishing date 2023-07-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article: Sedimentary biomarkers along a contamination gradient in a human-impacted sub-estuary in Southern Brazil: A multi-parameter approach based on spatial and seasonal variability

    de Abreu-Mota, Michelle Alves / Carlos Alberto de Moura Barboza / Márcia C. Bícego / César C. Martins

    Chemosphere. 2014 May, v. 103

    2014  

    Abstract: The composition and seasonal variations of sedimentary organic matter were investigated along the Cotinga sub-estuary, located in Paranaguá Bay, a large South American estuary where urban activities and the primary Brazilian grain shipping port are ... ...

    Abstract The composition and seasonal variations of sedimentary organic matter were investigated along the Cotinga sub-estuary, located in Paranaguá Bay, a large South American estuary where urban activities and the primary Brazilian grain shipping port are sources of pollution. Steroids and hydrocarbons were analyzed in surface sediments collected during the austral winter (2008) and summer (2009) in three distinct sectors, along this sub-estuary in a presumed gradient of fecal contamination. Concentrations ranged from 0.28 to 7.33μgg−1 (in dry sample weight thereafter), <DL (below detection limit) to 57.2ngg−1 and <DL to 1.69μgg−1 for aliphatic hydrocarbons (ΣAHs), polycyclic aromatic hydrocarbons (ΣPAHs) and coprostanol, respectively. Petrogenic inputs may be considered as source of AHs due to the presence of unresolved complex mixture in the majority of sites; however the levels observed do not indicate oil contamination. The highest ΣPAHs concentrations were found during the summer in the middle sector of the sub-estuary but were below the threshold effect levels (TEL), suggesting the absence of contamination by PAHs. Selected PAH isomer ratios indicated pyrolytic sources, whereas fecal sterols indicated decreasing sewage contamination from sub-estuary to the open ocean. The absence of correlation between organic markers and grain-size parameters suggested no preferential deposition sites of organic matter in the study area. The Principal Components Analysis suggested spatial variation in the distribution of sterols and AHs; however, temporal variations were only evident in the distribution of PAHs.<br />
    Keywords biomarkers ; coprostanol ; detection limit ; estuaries ; isomers ; oils ; organic matter ; pollution ; polycyclic aromatic hydrocarbons ; principal component analysis ; seasonal variation ; sediments ; sewage ; shipping ; summer ; winter ; Brazil
    Language English
    Dates of publication 2014-05
    Size p. 156-163.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2013.11.052
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2540: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top