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Puppin-Gonçalves CT, Medeiros LLLD, Lopes PFM, Freire FADM. Ulva lactuca blooms through the eyes of fishers: Threats to vulnerable coastal communities. MARINE POLLUTION BULLETIN 2024; 208:117038. [PMID: 39361992 DOI: 10.1016/j.marpolbul.2024.117038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 09/02/2024] [Accepted: 09/20/2024] [Indexed: 10/05/2024]
Abstract
Eutrophication intensifies Harmful Macroalgae Blooms (HMBs) in coastal environments, reducing habitat suitability for organisms and creating significant challenges for small-scale artisanal fishers. Leveraging fishers' memories, we analyzed over 20 years of data on Ulva lactuca blooms and their effects on fishing activities and fish resources in a tropical semi-arid region of Brazil. We estimated the timing, seasonality, and impacts of these bloom episodes on fish catches, fishing gears, and fishery revenues. Since 2010, blooms have become more frequent, particularly during dry seasons in shallow estuaries, likely exacerbated by nutrient enrichment, extended water residence time, and inadequate wastewater treatment. Net-based gear is particularly affected, with fish catches decreasing by up to sevenfold during bloom seasons, leading to income losses of approximately 50 %. Addressing eutrophication through active public policies on effluent treatment is crucial to mitigating economic impacts on vulnerable communities and managing future blooms, which are expected to worsen with climate change.
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Affiliation(s)
- Carolina Teixeira Puppin-Gonçalves
- Laboratório de Ecologia Aquática - LEAq, Departamento de Oceanografia e Limnologia, Universidade Federal do Rio Grande do Norte, Via Costeira Senador Dinarte Medeiros Mariz, s/n, Natal 59090-002, Brazil; Laboratório de Ecologia e Evolução de Crustáceos - LABEEC, Departamento de Biologia, Ecologia e Botânica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Campus Universitário Lagoa Nova, Caixa Postal 1524, CEP 59078-970 Natal, Brazil.
| | - Laiane Lane Lucena de Medeiros
- Laboratório de Ecologia e Evolução de Crustáceos - LABEEC, Departamento de Biologia, Ecologia e Botânica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Campus Universitário Lagoa Nova, Caixa Postal 1524, CEP 59078-970 Natal, Brazil
| | - Priscila Fabiana Macedo Lopes
- Fishing ecology, management, and economics group - FEME, Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, Campus Universitário s/n, Lagoa Nova, Natal 59098-970; Brazil; Research Institute of The University of Bucharest (ICUB), University of Bucharest, Bucharest, Romania.
| | - Fúlvio Aurélio de Morais Freire
- Laboratório de Ecologia e Evolução de Crustáceos - LABEEC, Departamento de Biologia, Ecologia e Botânica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Campus Universitário Lagoa Nova, Caixa Postal 1524, CEP 59078-970 Natal, Brazil.
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Brito PS, Guimarães EC, Filgueira CTS, Lima BN, Aick CDM, Santos JP, Ottoni FP. Gobionellus stomatus Starks 1913 (Oxudercidae: Gobionellinae): range extension for the coastal zone of the Brazilian Amazon region. BRAZ J BIOL 2024; 84:e281355. [PMID: 39046050 DOI: 10.1590/1519-6984.281355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 05/08/2024] [Indexed: 07/25/2024] Open
Abstract
Gobionellus stomatus, a fish species endemic to Brazil, was previously known to occur from the State of Piauí to the State of Rio Grande do Sul. Here we present the first record of this species for the State of Maranhão, specifically for the Upaon-Açu island, extending its distribution further west, to the coastal zone of the Amazon region. This species inhabits estuarine ecosystems susceptible to environmental pressures, such as pollution and the introduction of non-native species. Despite G. stomatus being classified as of least concern for conservation, it is crucial to highlight potential risks associated with human activities in these environments, emphasizing the importance of preservation measures to mitigate future impacts on the populations of this species, as well as of other estuarine gobies.
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Affiliation(s)
- P S Brito
- Universidade Federal do Maranhão - UFMA, Programa de Pós-graduação em Ciências Ambientais, Chapadinha, MA, Brasil
- Universidade Federal do Maranhão - UFMA, Laboratório de Sistemática e Ecologia de Organismos Aquáticos, Chapadinha, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Laboratório de Ictiofauna e Piscicultura Integrada, São Luís, MA, Brasil
| | - E C Guimarães
- Universidade Federal do Oeste do Pará - UFOPA, Programa de Pós-graduação em Sociedade, Natureza e Desenvolvimento, Santarém, PA, Brasil
| | - C T S Filgueira
- Universidade Federal do Maranhão - UFMA, Laboratório de Sistemática e Ecologia de Organismos Aquáticos, Chapadinha, MA, Brasil
| | - B N Lima
- Universidade Federal do Maranhão - UFMA, Laboratório de Sistemática e Ecologia de Organismos Aquáticos, Chapadinha, MA, Brasil
| | - C D M Aick
- Universidade Federal de Pelotas - UFPEL, Programa de Pós-graduação em Ciências Ambientais, Pelotas, RS, Brasil
| | - J P Santos
- Universidade Estadual do Maranhão - UEMA, Laboratório de Ictiofauna e Piscicultura Integrada, São Luís, MA, Brasil
| | - F P Ottoni
- Universidade Federal do Maranhão - UFMA, Programa de Pós-graduação em Ciências Ambientais, Chapadinha, MA, Brasil
- Universidade Federal do Maranhão - UFMA, Laboratório de Sistemática e Ecologia de Organismos Aquáticos, Chapadinha, MA, Brasil
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Freire LL, Costa AC, Neto IEL. Effects of rainfall and land use on nutrient responses in rivers in the Brazilian semiarid region. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:652. [PMID: 37160607 DOI: 10.1007/s10661-023-11281-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 04/19/2023] [Indexed: 05/11/2023]
Abstract
This paper investigated whether rainfall promotes dilution or increase in nutrient concentrations and which land use indicators are the main predictors of nutrients in intermittent rivers in a large Brazilian semiarid region. The total phosphorus (TP) and total inorganic nitrogen (TIN) were monitored between 2013 and 2018 at 92 river water quality monitoring sites. The monthly rainfall (Rn) was obtained from 575 rain gauges. Pearson's correlation (R) between Rn and nutrient concentration was performed. The correlation patterns were also analysed based on land use data: urban area (%), agricultural field area (%), demographic density (inhabitants/km2), sewer system coverage (%), and reservoir density (reservoir/km2). Backward stepwise regression was performed to identify predictors of nutrient concentrations. The results revealed a marginal effect of rainfall on nutrients when the effects of urbanisation outweigh all other aspects. However, in regions with greater accumulated rainfall and lower reservoir density, the rainfall was related to a linear increase in nutrient concentrations (R > 0.8). Contrastingly, in the basins with less accumulated rainfall and greater inter-basin hydrological disconnection, there was a linear reduction in nutrient concentration (R < - 0.5). In the backward stepwise regression, sewer system coverage and Rn had the greatest influence for TP, and the urban area was the strongest predictor for TIN. Importantly, our results demonstrated that in semiarid rivers in densely populated regions, there is no single pattern of variability in nutrient concentration, on a wide scale of assessment. Therefore, adaptative and decentralised management can be more effective in improving water quality in these regions.
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Affiliation(s)
- Letícia L Freire
- Department of Hydraulic Engineering and Environment, Federal University of Ceará, Fortaleza, Brazil
| | - Alexandre C Costa
- Institute of Engineering and Sustainable Development, University of International Integration of the Afro-Brazilian Lusophony, Redençao, Brazil
| | - Iran E Lima Neto
- Department of Hydraulic Engineering and Environment, Federal University of Ceará, Fortaleza, Brazil.
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Soares MO, Xavier FRDL, Dias NM, Silva MQMD, Lima JPD, Barroso CX, Vieira LM, Paiva SV, Matthews-Cascon H, Bezerra LEA, Oliveira-Filho RR, Salani S, Bandeira ÊVP. Alien hotspot: Benthic marine species introduced in the Brazilian semiarid coast. MARINE POLLUTION BULLETIN 2022; 174:113250. [PMID: 34922226 DOI: 10.1016/j.marpolbul.2021.113250] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 11/30/2021] [Accepted: 12/05/2021] [Indexed: 06/14/2023]
Abstract
In this study, we provide a baseline assessment of introduced marine species along the extensive (~600 km) Brazilian semiarid coast. We reported 27 introduced and 26 cryptogenic species. Moreover, the main vectors of introduction were ballast water, shipping lines, oil and gas activities, biofouling, and rafting on plastic debris. The taxa were Ascidiacea (17 species) and Bryozoa (17), followed by Crustacea (6), Mollusca (6), Cnidaria (3), Echinodermata (3), and Porifera (1). Among these invertebrates, some species are recognized as drivers of impacts such as the invasive corals (Tubastraea tagusensis and Tubastraea coccinea), the bivalves Isognomom bicolor and Perna viridis, the crab Charybdis hellerii, the brittle star Ophiothela mirabilis, and, finally, the bryozoan Membraniporopsis tubigera. These species threaten the biodiversity of unique ecosystems such as intertidal sandstone reefs, shallow-water coral reefs, and mesophotic ecosystems. Moreover, the up-to-date results highlight that this region is a hotspot of bioinvasion in the tropical South Atlantic.
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Affiliation(s)
- Marcelo Oliveira Soares
- Universidade Federal do Ceará (UFC), Instituto de Ciências do Mar (LABOMAR), Av. Abolição, 3207, CEP 60165-081 Fortaleza, CE, Brazil.
| | - Francisco Rafael de Lima Xavier
- Universidade Federal do Ceará (UFC), Instituto de Ciências do Mar (LABOMAR), Av. Abolição, 3207, CEP 60165-081 Fortaleza, CE, Brazil
| | - Nalu Maia Dias
- Universidade Federal do Ceará (UFC), Instituto de Ciências do Mar (LABOMAR), Av. Abolição, 3207, CEP 60165-081 Fortaleza, CE, Brazil
| | - Maiara Queiroz Monteiro da Silva
- Universidade Federal do Ceará (UFC), Departamento de Biologia, Laboratório de Invertebrados Marinhos do Ceará, CEP 60455-760 Fortaleza, CE, Brazil
| | - Jadson Pinto de Lima
- Universidade Federal do Ceará (UFC), Instituto de Ciências do Mar (LABOMAR), Av. Abolição, 3207, CEP 60165-081 Fortaleza, CE, Brazil
| | - Cristiane Xerez Barroso
- Universidade Federal do Ceará (UFC), Departamento de Biologia, Laboratório de Invertebrados Marinhos do Ceará, CEP 60455-760 Fortaleza, CE, Brazil
| | - Leandro Manzoni Vieira
- Departamento de Zoologia, Universidade Federal de Pernambuco (UFPE), Recife, Brazil; Department of Life Sciences, Natural History Museum, London, UK
| | - Sandra Vieira Paiva
- Universidade Federal do Ceará (UFC), Instituto de Ciências do Mar (LABOMAR), Av. Abolição, 3207, CEP 60165-081 Fortaleza, CE, Brazil
| | - Helena Matthews-Cascon
- Universidade Federal do Ceará (UFC), Instituto de Ciências do Mar (LABOMAR), Av. Abolição, 3207, CEP 60165-081 Fortaleza, CE, Brazil; Universidade Federal do Ceará (UFC), Departamento de Biologia, Laboratório de Invertebrados Marinhos do Ceará, CEP 60455-760 Fortaleza, CE, Brazil
| | - Luís Ernesto Arruda Bezerra
- Universidade Federal do Ceará (UFC), Instituto de Ciências do Mar (LABOMAR), Av. Abolição, 3207, CEP 60165-081 Fortaleza, CE, Brazil
| | - Ronaldo Ruy Oliveira-Filho
- Universidade Federal do Espírito Santo (UFES), Departamento de Ciências Agrárias e Biológicas, Centro Universitário Norte do Espírito Santo, Rodovia BR 101 Norte, Km 60, CEP. 29932-540 São Mateus, ES, Brazil
| | - Sula Salani
- Universidade de Brasília (UNB), Instituto de Ciências Biológicas, Laboratório de Bentos, CEP 70910-900 Brasília, DF, Brazil
| | - Ênio Victor Paiva Bandeira
- Universidade Federal do Ceará (UFC), Departamento de Biologia, Laboratório de Invertebrados Marinhos do Ceará, CEP 60455-760 Fortaleza, CE, Brazil
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Evaluation of Satellite-Derived Products for the Daily Average and Extreme Rainfall in the Mearim River Drainage Basin (Maranhão, Brazil). REMOTE SENSING 2021. [DOI: 10.3390/rs13214393] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Satellite precipitation estimates are used as an alternative or as a supplement to the records of the in situ stations. Although some satellite precipitation products have reasonably consistent time series, they are often limited to specific geographic areas. The main objective of this study was to evaluate CHIRPS version 2, MSWEP version 2, and PERSIANN-CDR, compared to gridBR, as daily mean and extreme inputs represented on a monthly scale and their respective seasonal trends of rainfall in the Mearim River Drainage Basin (MDB), Maranhão state, Brazil. Estimates of errors were calculated (relative error, pbias; root mean square error, RMSE, and Willmott concordance index, d), and the chances of precipitation were estimated by remote sensing (RES). In addition, trends in precipitation were estimated by the two-sample Mann–Kendall test. Given the overall performance, the best products for estimating monthly mean daily rainfall in the MDB are CHIRPS and PERSIANN-CDR, especially for rainy months (December to May). For daily extremes on the monthly scale, the best RES is PERSIANN-CDR. There is no general agreement between gridBR and RES methods for the trend signal, even a nonsignificant one, much less a significant one. The use of MSWEP for the MDB region is discouraged by this study because it overestimates monthly averages and extremes. Finally, studies of this kind in drainage basins are essential to improve the information generated for managing territories and developing regionalized climate and hydrological models.
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