Transgressive deposits and morphological patterns in the equatorial Atlantic shallow shelf (Northeast Brazil)

Neto, Antônio Chaves Assis; Morais, Jáder Onofre de; Paula, Luciano Filho Sousa de; Pinheiro, Lidriana de Souza

doi:10.1016/j.rsma.2018.08.015

Cited by 10 publications

(8 citation statements)

References 52 publications

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“…In this zone, there are darkened biolithoclastic sands associated with calcareous algae and foraminifera [35]. Several morphological patterns such as ripples and small dunes occur in this sector [37] as mapped by fishermen from the Tapera village.…”

Section: Discussionmentioning

confidence: 97%

“…The shallow shelf has two morphological patterns. The first is in the NW-SE direction, with greater slopes, and the second is in the E-W direction [35,37]. The fishermen use Praia de Almofala as a reference point for this geomorphological compartmentation.…”

Section: Discussionmentioning

confidence: 99%

“…The Ceará's continental shelf comprises three bathymetric zones: inner shelf < 20 m, middle shelf 20-40 m, outer shelf > 40 m to the shelf break, ~60-70 m, presenting mixed sedimentation features [35]. The coastal zone is characterized by dunes, estuaries with mangroves, sand spits, and flat beaches [36,37]. The tides reach amplitudes of 3.3 m favoring the use of intertidal zones for the construction of "fishing corrals" and other harvesting activities by the local community [36].…”

Section: Study Areamentioning

confidence: 99%

“…The first step was to edit a basic map with the following information: (a) Three geomorphological macro-compartment limits of the continental shelf [35,45] and their respective sedimentary facies [37] (Figure 2a); (b) Bathymetric map compiled from nautical charts from the Brazilian Navy and Database's Geodiversity Beach-Continental shelf Project (GBCSPproject), Figure 2b; (c) Distance scale in fathoms and meters; (d) Spatial representation of shipwrecks, coastline, mangroves, drainage, and villages (Figure 2). This map made possible the spatial positioning of the respondents, who use the landmarks on land and the distance from the coast as elements for navigation.…”

Section: Data Collection and Analysismentioning

confidence: 99%

“…Sediment samples kits and image slides from video transects were prepared in a second step. They contained samples of the seven main types of bottom sediments collected in the area by the GBCSP project and substrates' images obtained by ROV, side scan sonar, scuba diving, and remote sensors [28,29,35,37,45,46].…”

Section: Data Collection and Analysismentioning

confidence: 99%

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Seascape Ethnomapping on the Inner Continental Shelf of the Brazilian Semiarid Coast

Pinheiro

Neto

Bezerra

et al. 2023

Water

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Seascape mapping is critical to understanding ecosystem services and managing areas with potential for fishing, power generation, mining, and tourism. Despite advances in marine geophysics, the necessary equipment to make underwater cartography can be expensive and requires a certain degree of specialization. In areas with scarce data, ethnomapping can be used for the elaboration or complementation of marine cartography. In addition, it provides information about the nature, concepts, phenomena, and nomenclatures attributed by the local population. The aim of this study was to integrate the knowledge of artisanal fishermen from NE Brazil into the mapping of seascapes, validating the obtained cartography with scientific sampling. Focus groups were used to promote an open discussion of local users’ knowledge about seascapes and their importance for local fisheries. After analyzing, it was possible to correlate the products of participatory mapping with the scientific data available in the literature, resulting in the seascape ethnomap. Nine seascapes relevant to subsistence fisheries were identified. The mapping of seascapes and fauna captured by indigenous fishermen was similar to that produced from preexisting geology, geomorphology, and fishing data. This validated the methodological protocol and the importance of the participation of local populations in coastal conservation and management activities.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%