Characterization of phytoplankton biodiversity in tropical shipwrecks off the coast of Pernambuco, Brazil

Santos, Douglas H. Cavalcanti dos; Silva-Cunha, Maria da Glória Gonçalves da; Santiago, Marilene Felipe; Passavante, José Zanon de Oliveira

doi:10.1590/s0102-33062010000400007

Cited by 5 publications

(3 citation statements)

References 21 publications

(21 reference statements)

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“…Chlorophyll a is the main photosynthetic pigment in all oxygen-evolving photosynthetic algae while other algal pigments have limited distribution and considered as accessory or secondary pigments (Akpan 1994). It constitutes approximately 1-2% of the dry weight of phytoplanktonic algae, its assessment is relatively easy, cheap and rapid to quantify in comparison to the analysis of a full suite of dissolved nutrients (Hakanson 1994, Passavante and Feitosa 2004, Brando et al 2006, Shehata et al 2008, Sobhy 2008, Todd et al 2008and Santos et al 2010.…”

Section: Introductionmentioning

confidence: 99%

Relationship Between Total Chlorophyll and Phytoplankton Individuals of Rosetta Branch of River Nile, Egypt

2013

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Total chlorophyll concentrations of the phytoplanktonic samples of Rosetta branch of the River Nile at the stations before Edfina barrage (from station I to V) and after Edfina barrage (stations VI and VII) were studied during two successive years from August 2006 to April 2008. At all stations, the total chlorophyll contents of the identified algae and the maximum quantitative algal individuals were found maximum during summer 2007. Peak periods of total chlorophyll coincided with peak periods of the stations that recorded high algal biomass. Phytoplankton in Rosetta branch of the river Nile at the most studied stations (I, II, IV, V and VI) had chloro-character particularly in summer 2007. A positive correlation was observed between the fluctuations of total chlorophyll contents of the phytoplankton and those of total number of individuals at all investigated stations of Rosetta branch. DOI: http://dx.doi.org/10.3126/eco.v18i0.9392Ecoprint: An International Journal of EcologyVol. 18, 2011 Page: Uploaded date: 12/20/2013

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Section: Introductionmentioning

confidence: 99%

Relationship Between Total Chlorophyll and Phytoplankton Individuals of Rosetta Branch of River Nile, Egypt

2013

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“…The study took place in shipwrecks in the coastal area from Pernambuco State (Northeastern Brazil), located between 9-13 km away from the port of Recife city (Figure 1). The shipwreck Pirapama (8°3'23.00" S and 34°46'58.00" W), sunk in 1889, incidentally, measures 60 m total length, is located 21 m depth and is oriented with the bow facing Southwest (Santos et al, 2010) (Figure 1, inset). The shipwrecks Taurus and Virgo (8°4'11.58" S and 34°45'11.76" W) with approximately 25 m total length were sunk deliberately to 25 m depth, in 2006 (Santos et al, 2008) and 2017 (Correia et al, 2018), respectively.…”

Section: Study Areamentioning

confidence: 99%

Using Aggregating Devices to Sample Fish Recruits Around Deep Shipwrecks: Experiments and Suggestions

Correia

Silva

Schettini

et al. 2020

ACMAR

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Fish aggregating devices (FAD) are an ancient fishery technique that benefits from the gregarious behavior of many species. They represent alternatives to usual census approach to study fish recruits. Based on this, we test two FAD models built for fish recruitment research, Standard monitoring unit for the recruitment of reef fishes (SMURF) and Artificial Reef Mooring (ARM) moored for the first time close to deep shipwrecks inBrazil Northeastern coast. We compared fish recruits’ abundance sampled by both models at two depths, bottom and mid-water (6 meters from the bottom). SMURFs sampled seven times more fish recruits than ARM with no difference between depth. We discovered that SMURFs mooring tilted 24º in mean with local marine currents. A long-term study with SMURFs tested immersion time influence in recruit’s sampling, and explored recruit’s abundance and standard length at two depth from the bottom. Increasing immersion timefrom 14-28 days did not influence recruit’s abundance. Bottom and Mid-water SMURFs sampled equal recruit’s number and fish sizes were significantly larger at the bottom. FADs, specially SMURFs, showed good tool to sample fish recruits in deeper shipwrecks,however standardization of FAD deployment is indicated to maximize work time and security in unstable sea conditions.

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“…Objects originally intended for other uses, which were dropped offshore at the end of their life cycle or after discontinuation of their production, have been adapted as ARs. Examples include shipwrecks (Santos et al , 2010), car tires (Sherman and Spieler, 2006), war tanks/armed force vehicles (Sheehy et al , 2020) and subway cars (Galiano, 2003), among others. Accidentally sunken elements also fall into this category.…”

Section: Introductionmentioning

confidence: 99%

Artificial reefs through additive manufacturing: a review of their design, purposes and fabrication process for marine restoration and management

Matus,

Alves,

Góis

et al. 2024

RPJ

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Purpose The purpose of this paper is to review cases of artificial reefs built through additive manufacturing (AM) technologies and analyse their ecological goals, fabrication process, materials, structural design features and implementation location to determine predominant parameters, environmental impacts, advantages, and limitations. Design/methodology/approach The review analysed 16 cases of artificial reefs from both temperate and tropical regions. These were categorised based on the AM process used, the mortar material used (crucial for biological applications), the structural design features and the location of implementation. These parameters are assessed to determine how effectively the designs meet the stipulated ecological goals, how AM technologies demonstrate their potential in comparison to conventional methods and the preference locations of these implementations. Findings The overview revealed that the dominant artificial reef implementation occurs in the Mediterranean and Atlantic Seas, both accounting for 24%. The remaining cases were in the Australian Sea (20%), the South Asia Sea (12%), the Persian Gulf and the Pacific Ocean, both with 8%, and the Indian Sea with 4% of all the cases studied. It was concluded that fused filament fabrication, binder jetting and material extrusion represent the main AM processes used to build artificial reefs. Cementitious materials, ceramics, polymers and geopolymer formulations were used, incorporating aggregates from mineral residues, biological wastes and pozzolan materials, to reduce environmental impacts, promote the circular economy and be more beneficial for marine ecosystems. The evaluation ranking assessed how well their design and materials align with their ecological goals, demonstrating that five cases were ranked with high effectiveness, ten projects with moderate effectiveness and one case with low effectiveness. Originality/value AM represents an innovative method for marine restoration and management. It offers a rapid prototyping technique for design validation and enables the creation of highly complex shapes for habitat diversification while incorporating a diverse range of materials to benefit environmental and marine species’ habitats.

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Characterization of phytoplankton biodiversity in tropical shipwrecks off the coast of Pernambuco, Brazil

Cited by 5 publications

References 21 publications

Relationship Between Total Chlorophyll and Phytoplankton Individuals of Rosetta Branch of River Nile, Egypt

Relationship Between Total Chlorophyll and Phytoplankton Individuals of Rosetta Branch of River Nile, Egypt

Using Aggregating Devices to Sample Fish Recruits Around Deep Shipwrecks: Experiments and Suggestions

Artificial reefs through additive manufacturing: a review of their design, purposes and fabrication process for marine restoration and management

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