150 years of anthropogenic impact on coastal and ocean ecosystems in Brazil revealed by historical newspapers

Gallardo, Santiago Sandoval; Fossile, Thiago; Herbst, Dannieli Firme; Begossi, Alpina; Silva, Luiz Geraldo; Colonese, André Carlo

doi:10.1016/j.ocecoaman.2021.105662

Cited by 18 publications

(23 citation statements)

References 68 publications

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“…Population Density (D)= ∑number of individuals total area sampled (1) Relative Population Density RPD = density for a species total density for all species x100% (2) Frequency F = number of plots in which a species occurs the total number of plots sampled (3) Relative Frequency RF = frequency value for a species total frequency value for all species x100% (4) Dominance D = total of basal area of each tree of a species from all plots total area of all the measured lots (5) Relative Dominance RD = D for a species total dominance for all species (6) Importance Value Index (IVI) = RD + RF + RD (7) Mangrove coverage percentage at the study location was determined using the on-screen manual digitation method based on land coverage class visible in high-resolution imagery satellite and performed a confirmation of the existing condition in the field. The imagery satellite data used were Landsat images as satellite imagery-captured programs with Landsat satellite.…”

Section: Discussionmentioning

confidence: 99%

“…High community growth and rapid development activity in the coastal area for various purposes increase the ecological pressure on the ecosystem and coastal and marine resources. This condition can surely threaten the ecosystem and the availability and sustainability of resources either directly (land conversion) or indirectly (various development activities generating pollution) [2], [3]. These threats can cause decreased population and scarcity of several aquatic biotas, including Longtail Shad fish (T. macroura).…”

Section: Introductionmentioning

confidence: 99%

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Mangroves and the Sustainability of Longtail Shad Fish (Tenualosa macroura) in Riau Province Water, Indonesia

Seygita¹,

Sulistiono²,

Kusmana³

et al. 2022

Int. J. Adv. Sci. Eng. Inf. Technol.

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Mangroves are crucial to fisheries as nurseries; they can be used as spawning and feeding grounds for fish, including Longtail Shad fish (Tenualosa macroura). The objective of the study was to analyze the mangrove vegetation used as Longtail Shad fish spawning ground. It was carried out from January to May 2021, using a checkered line method with six sampling stations. Each station was placed in three transects with three plots for each transect. Density, relative density, frequency, relative frequency, dominance, relative dominance, and importance value index were included in the vegetation analysis. There were 13 true mangrove types and 1 mangrove associate type at the study locations. The highest mangrove density was found at Station 3 with 3300.48 Ind/Ha, categorized as good. The highest mangrove coverage was found at Station 2, with an exceptionally dense category (76.34%). The regression analysis revealed a substantial relationship between density and mangrove and the water salinity at a 0.002 significance value (<0.05). Based on the gut content analysis in establishing the fish's eating habits, the type of food consumed by the Longtail Shad fish was mostly mangrove litter, representing 44.66% of the total stomach contents. The result of the study clearly shows that mangroves are crucial for Longtail Shad fish. A good mangrove ecosystem will provide good water quality for the migration process of longtail shad fish and produce mangrove litter as fish food. Mangrove ecosystem management can support the management of Terubuk fisheries.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mangroves and the Sustainability of Longtail Shad Fish (Tenualosa macroura) in Riau Province Water, Indonesia

Seygita¹,

Sulistiono²,

Kusmana³

et al. 2022

Int. J. Adv. Sci. Eng. Inf. Technol.

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“…As a result, ecosystems and the ecosystem services they provide have been significantly depleted (Dugan et al, 2018;Jaramillo et al, 2021). Global reports of declining coastal biodiversity have been related to anthropogenic activities (MEA, 2005;IPBES, 2019;Newton et al, 2020;Sandoval Gallardo et al, 2021). On a global scale, three most comprehensive studies have reported declines in coastal biodiversity.…”

Section: Introductionmentioning

confidence: 99%

Increasing coastal reclamation by Invasive alien plants and coastal armoring threatens the ecological sustainability of coastal wetlands

Leng

Yuguda

et al. 2023

Front. Mar. Sci.

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Coastal reclamation is becoming a common land restoration trend all over the world as a result of the rising demand for land. Though restoring coastal wetlands has significant economic advantages, a slew of adverse ecological effects threatens the carbon functions of coastal wetlands. For the objective of making appropriate land use policymaking, the ecological-economic trade-offs of reclamation initiatives must be carefully considered. In this study, we utilized appropriate models to estimate the ecosystem service values and economic benefits of invasive alien plants and embankment seawall coastal reclamation in China. We centered on three main ecology-related ecosystem services: greenhouse gas regulation, storm-flood-erosion control, and waste treatment/habitat preservation. Coastal reclamation intensity index and financial analysis were utilized to assess the trade-offs between ecological degradation and economic benefit resulting from land reclamation. Findings reveal that a total of 26,322 ha and 10,731 km of coastal wetlands were reclaimed by Spartina alterniflora and seawalls respectively from 2000 to 2020 in China. S. alterniflora reclamation resulted in a significant decline of ESV loss of 5,702,454 Yuan ha−1, while seawalls reclamation yielded some Ecosystem service value (ESV) gain of 4,800, 111 Yuan km-1 from 2000-2020. The combined effects of coastal armoring and invasive S. alterniflora reclamation led to a loss of about 32.2 billion Yuan in ESV for the study duration. Economic gains failed to make up for the ecosystem service value ESV loss, since the cumulative ESV loss significantly exceeded the economic gains across the period studied. This correlation of trade-offs emerged from reclamation development that favored quick economic gains over long-lasting ecological value, posing a potential long-term threat to the ecological integrity and carbon sinks in coastal wetlands. To establish an equilibrium between seawall reclamation and Invasive alien plant species spread in coastal wetlands, stakeholders could use this scientific knowledge as leverage to avert future irreparable losses.

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“…Since a system's anthropogenic activities and ecological components are interconnected in many ways, studies with integrated approaches provide a more realistic scenario to identify sustainable ecosystem management strategies 8 . In Brazil, the economic growth peaks of the last decades were based on industrialization concentrated in the coastal areas, inducing together with tourism development their urban growth 9 . This strong association determined, in the Brazilian coastal zone, vigorous territorial, populational, and economic dynamics, causing environmental, social, and economic impacts and con icts 10,11 .…”

Section: Introductionmentioning

confidence: 99%

Under Pressure: an integrated assessment of human activities and their potential impact on the ecosystem components of the Southern Brazilian continental shelf

Scherer

Sardinha

Souza

et al. 2023

Preprint

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The economic activities at the South Brazilian Shelf (SBS) are concentrated on the coast causing several impacts. To reconcile biodiversity and habitat conservation in the coastal and marine areas with human activities it is important to identify those sectors and pressures. We conducted an analysis to assess ecosystem risks from multiple drivers and pressures in the continental shelf that extends from the Southernmost point of Brazil (Chuí) to Cabo Frio cape, in Rio de Janeiro State. We used the Integrated Ecosystem Assessment (IEA) methodology, a framework for implementing ecosystem-based management grounded on five steps: scoping, indicator development, ecosystem assessment, risk analysis, and management strategy evaluation. This work developed the scoping step consisting of an assessment tracing sector–pressure–ecological component pressure pathways. Subsequently, links were scored regarding their level of overlap on each ecosystem component, frequency and degree of impact, estimating the magnitude of impact risk of each one of the sectors. The assessment was done involving 20 experts from several backgrounds. In order to validate the results, a literature review was conducted and further discussion with relevant stakeholders took place. As a result, 16 sectors and 19 pressures were assessed to impact 18 ecological components. Fishing, land-based industry, tourism and recreation, the lack of wastewater treatment and coastal infrastructure represented the main economic sectors impacting the area. The major associated pressures were the incidental catch of species, the introduction of contaminants and organic matter into the water, and the generation of waste. The most affected ecosystems, in turn, were those located closer to the coast, such as mangroves, saltmarshes and rocky reefs while the preeminent impacted taxonomic groups were the elasmobranchs, seabirds, reptiles, mammals and bony fish. The literature review corroborated the scenario projected by the experts and the stakeholders’ workshop endorsed the results found. The methodology indicated the most relevant pressures caused by human activities, with more significant impacts related to activities closest to the coastline. Also, it draws attention to the need for the elaboration of public policies that contemplate and support impact reduction of the most important sectors, identifying the priorities for coastal and marine management.

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150 years of anthropogenic impact on coastal and ocean ecosystems in Brazil revealed by historical newspapers

Cited by 18 publications

References 68 publications

Mangroves and the Sustainability of Longtail Shad Fish (Tenualosa macroura) in Riau Province Water, Indonesia

Mangroves and the Sustainability of Longtail Shad Fish (Tenualosa macroura) in Riau Province Water, Indonesia

Increasing coastal reclamation by Invasive alien plants and coastal armoring threatens the ecological sustainability of coastal wetlands

Under Pressure: an integrated assessment of human activities and their potential impact on the ecosystem components of the Southern Brazilian continental shelf

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