A5028423616- Microplastics and Plastic Pollution
- Marine and fisheries research
- Fish biology, ecology, and behavior
- Coral and Marine Ecosystems Studies
- Fish Biology and Ecology Studies
- Marine Biology and Ecology Research
- Recycling and Waste Management Techniques
- Fish Ecology and Management Studies
- Ichthyology and Marine Biology
- Isotope Analysis in Ecology
- Cephalopods and Marine Biology
- Municipal Solid Waste Management
- Marine and Offshore Engineering Studies
- Musculoskeletal pain and rehabilitation
- Marine Biology and Environmental Chemistry
- Environmental and biological studies
- Academic Research in Diverse Fields
- Turtle Biology and Conservation
- Rural Development and Agriculture
- Plant Water Relations and Carbon Dynamics
- Identification and Quantification in Food
- Marine and environmental studies
- Marine and coastal ecosystems
- Genetic diversity and population structure
- Agricultural and Food Sciences
Universidade Federal do Rio Grande do Sul
2014-2025
Universidade Federal do Rio Grande
2001-2021
Universidade Unigranrio
2010
Abstract Although marine plastic pollution has been the focus of several studies, there are still many gaps in our understanding concentrations, characteristics and impacts plastics oceans. This study aimed to quantify characterize debris oceanic surface waters Antarctic Peninsula. Sampling was done through trawls, mean concentration estimated at 1,794 items.km −2 with an average weight 27.8 g.km . No statistical difference found between amount mesoplastics (46%) microplastics (54%). We hard...
Neonatal Intensive Care Units (NICUs) are specialized environments designed to provide critical care newborns with severe health conditions. However, neonates admitted these units often undergo numerous painful procedures, which, if not adequately managed, can lead short- and long-term physiological neurodevelopmental consequences. Given the limited ability of verbally express pain, effective assessment methods rely on behavioral indicators. Various validated pain scales have been developed...
ABSTRACT We record a single juvenile specimen of driftfish, Nomeus gronovii (Gmelin, 1789), in shallow surf zone the southern Brazilian waters. This is southernmost N. on South Atlantic. The was identified based morphological characters that had been unintentionally recorded with small underwater video camera. Although species usually found symbiotic association Portuguese man-of-war, Physalia (Cnidaria: Hydrozoa), siphonophores were not as part this record. finding emphasizes role citizen...
In this work, we evaluated the influence of long rocky jetties (~5 km) on fish abundance and diversity between sheltered exposed marine sandy beaches. We also described compared community structure investigated relationships environmental variables assemblages. Fish were collected monthly with a beach seine net from May 2001 to 2002 at Cassino Mar Grosso Twenty-nine taxa caught assemblage showed similar composition beaches (S j = 62.1%; %Min 52.3%), 18 species in common. Most juveniles,...
Surf-zone fish assemblage was investigated to assess its patterns of variability for two sandy beaches in southern Brazil. Fish were collected monthly (July 2009–June 2011), and the hauls conducted with different beach seine nets. Generalized linear models used following approaches: (1) a Poisson model compare species richness; (2) logistic gamma explain occurrence abundance Mugil liza Trachinotus marginatus (dominant species). A set nine explanatory variables ecological variability. At...
The diet and foraging strategy of juvenile Menticirrhus americanus (Linnaeus, 1758) littoralis (Holbrook, 1847) were studied, testing the existence trophic overlap between these species within different seasons (spring summer). Individuals sampled using a beach seine in surf zone near Rio Grande, state Grande do Sul, Brazil. Based on Morisita's Simplified Overlap Index Bootstrapping technique, was considered high during spring (Cik = 0.97 ± 0.07) low summer 0.37 0.14). Juveniles shared same...
Exchange of matter and energy between ecosystems has been an important topic in ecology. In this work, we estimated the relative assimilation seasonality autochthonous versus allochthonous organic by macrofauna fishes a subtropical sandy beach. Sampling consumers autotrophic food sources (particulate suspension-POM sediment-SOM) were obtained seasonally at beach for carbon (δ13C) nitrogen (δ15N) stable isotope analysis. The range isotopic values POM was nearly two-fold higher winter than...
The aim of this study was to compare the influence different haul distances a codend beach seine on catchability fish in surf zone. Two zone sites (A and B) at Cassino Beach (Rio Grande do Sul, Brazil) were sampled three distances, parallel (30, 60, 90 m). Starting 40 m from line, diagonal approximately 50, 70, 100 swept. total CPUE CPUA are compatible with declining trend catch rates increased distance both sites. However, statistically significant differences observed only for short (50 m)...
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Based on a set of intermittent and seasonal data, covering discontinuous 21-year period (1995 to 2016) using standard beach seine with replicates at several collection points inside the Tramandaí River estuary (TRE) outside in marine adjacent coastal area (MACA), we evaluated connectivity between TRE MACA spatiotemporal variations fish associations. In (405 samples; 42,987 individuals) 55 species were captured. (297 54,295 41 After data standardization expected richness [E(S) = 18.2] was...
Feeding hal>ils and moulh oSleology oI' silverside, Oclol/leslfles fllImel/sis de Buen (Alheriniformes, Alherinopsidae) in lhe Mirim Lagoon, Rio Grande do Sul, Brazil.Gutcontenls 01'304 individuais ofthe silverside Oclol1leslfles hl/mel/sis Buen, 1953 were analyzed using frequency occurrence (FO%) gravimelric (P%) methods.A lolal 01'207 (68.1 %) had some food itens the gUl, while 97 (31.9%) empty guts.The Odollleslhes hllmel1sis has presented a benthic camivorous diet, preying mainly on...
A micropaleontological analysis on 15 beachrock samples from the Northern sector of Rio Grande do Sul Coastal Plain (RSCP ), southern Brazil , revealed a relatively diverse and well-preserved ostracod assemblage composed 16 species including Cyprideis multidentata Hartmann, Callistocythere nucleoperiscum Whatley et al., Cytheretta punctata Sanguinetti, Caudites ohmerti Coimbra & Ornellas Argenticytheretta levipunctata Sanguinetti al. Eleven are left in open nomenclature or tentatively...
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The objective of this study was to compare two different morphometric methodologies - traditional measurements and truss networks based on species silversides, Odontesthes bonariensis (Valenciennes, 1835) O. humensis De Buen, 1953, determine which the methods results in more reliable distinction between groups. measures do not represent true fish form because it does take into account alometric variations or distinct growth stages. with extend over thoroughly resulting complete...