Reduction of herbivorous fish pressure can facilitate focal algal species forestation on artificial structures

2018 ◽  
Vol 138 ◽  
pp. 102-109 ◽  
Author(s):  
Fabrizio Gianni ◽  
Fabrizio Bartolini ◽  
Laura Airoldi ◽  
Luisa Mangialajo
Keyword(s):  
Algal Species ◽  
Herbivorous Fish ◽  
Artificial Structures

STRUKTUR KOMUNITAS MAKRO ALGA DI PESISIR PULAU KECAMATAN BULANG

SIMBIOSA ◽  
2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Notowinarto Notowinarto ◽  
Ramses Ramses ◽  
Mulhairi Mulhairi
Keyword(s):  
Community Structure ◽  
Diversity Index ◽  
Algal Species ◽  
Algal Communities ◽  
Marine Life ◽  
Ph Values ◽  
Abundance Patterns ◽  
Coastal Marine ◽  
Temperature Parameter ◽  
Important Value Index

Bulang districts Batam Islands of  Riau province (Riau Islands), its consists of many islands with as well as having the potential diversity of coastal marine life in particular kinds of macro algae or seaweed. Conducted research aimed to determine the structure of macro- algal communities in the intertidal zone islands. The results of the identification of algal species found 16 species are: the Order of Chlorophyceae as 6 spesies; Order Phaeophyceae as 2 spesies; and Order Rhodophyceae as 8 spesies. The community structure at the five stations showed the highest values were found in the island of dominance Cicir (D ' = 0.79) , uniformity index values on Tengah Island (E ' = 0.99) , while the island Balak had the highest diversity index (H ' = 0.88) , with the abundance patterns of population structure on the island is pretty good Central . Results of correlation analysis of regression between IVI types of algae with the conditions of environmental quality suggests that there is a significance (Fhit ˃ F table and the value of r = > 90 %) between IVI algae Halimeda sp and Cryptarachne polyglandulosa at each station with a temperature parameter surface (⁰C) , depth temperature (⁰C) and pH values. Keywords : Algae, Community Structure, Important Value Index.

MARINE MICRO AND MACRO ALGAL SPECIES AS BIOSORBENTS FOR HEAVY METALS

2007 ◽  
Vol 6 (3) ◽  
pp. 237-251 ◽  
Author(s):  
Loredana Brinza ◽  
Matthew J. Dring ◽  
Maria Gavrilescu
Keyword(s):  
Heavy Metals ◽  
Algal Species

EFFECT OF SOME ALGAL SPECIES ON THE SNAIL INTERMEDIATE HOSTS OF SCHISTOSOMIASIS IN EGYPT II. GROWTH, INFECTION AND MORTALITY RATES

2005 ◽  
Vol 6 (1) ◽  
pp. 93-110
Author(s):  
Faiza El-Assal ◽  
Sanaa Shanab ◽  
Amin Abou-El-Hassan ◽  
Kadria Mahmoud
Keyword(s):  
Algal Species ◽  
Mortality Rates ◽  
Intermediate Hosts

EFFECT OF DIFFERENT CHEMICAL COMPOUNDS ON THE GROWTH OF TWO SOIL ALGAL SPECIES NOSTOC HUMIFUSUM AND OSCILLATORIA EARLEI.

2004 ◽  
Vol 5 (1) ◽  
pp. 119-137
Author(s):  
Rawheya Salah El Din ◽  
Ahmed El-Gamel ◽  
Fatma El Habashi ◽  
Wessam El Nemr
Keyword(s):  
Algal Species ◽  
Chemical Compounds

The Use of Sodium Carbonate Peroxyhydrate to Treat Off-Flavor in Commercial Catfish Ponds

1992 ◽  
Vol 25 (2) ◽  
pp. 315-321 ◽  
Author(s):  
J. F. Martin
Keyword(s):  
Water Column ◽  
Sodium Carbonate ◽  
Algal Species ◽  
The Other ◽  
Average Depth ◽  
Oscillatoria Chalybea ◽  
Catfish Ponds ◽  
Pond Ecology ◽  
Sodium Carbonate Peroxyhydrate

Sodium carbonate peroxyhydrate (SCP) was applied to seven commercial catfish ponds in Mississippi to study the effects of treatment on fish flavor and pond ecology. The seven ponds were treated on alternate days in the morning with two doses of SCP at 55 kg hectare−1 (average depth 1-1.6 m). In three of the ponds, a potent 2-methylisoborneol (MIB) producing planktonic Oscillatoria chalybea-like species that was initially present was absent from the water column after treatment. In addition, the fish from two of these ponds were judged on-flavor 7 to 10 days after treatment. The off-flavor chemicals in three other ponds were diminished when measured seven days after treatment and fish were harvested from two of these ponds 10-14 days after treatment. The fish from the other two ponds were harvested 21 days after treatment. In the sixth pond, the predominant algal species was a 2-methylisoborneol producing O. chalybea-like species at 380 cells ml−1 and the treatment was ineffective. The treatment was most successful when off-flavor was less than two months duration and where application of the chemical was accomplished uniformly over the entire pond surface.

Biochemical study of attached macroalgae from the Madeira Archipelago and beach-cast macroalgae from the Canary Islands: multivariate analysis to determine bioresource potential

2020 ◽  
Vol 63 (3) ◽  
pp. 283-298
Author(s):  
Nuno Nunes ◽  
Sofia Valente ◽  
Sónia Ferraz ◽  
Maria Carmo Barreto ◽  
Miguel A.A. Pinheiro de Carvalho
Keyword(s):  
Biochemical Study ◽  
Algal Species ◽  
Biochemical Properties ◽  
Total Phenolic ◽  
Total Carotenoids ◽  
The North ◽  
Madeira Archipelago ◽  
Total Carbohydrates ◽  
Beach Cast

AbstractFifteen attached macroalgae from the Madeira Archipelago, comprising three green, three red and nine brown algal species, as well as two beach-cast macroalgal samples, collected along the north shore of Gran Canaria, were assessed for their biochemical properties. The analysis included the determination of total minerals, total carbohydrates, protein, lipids, chlorophyll a, total carotenoids, total phenolic content, fucoxanthin and phycobilins (allophycocyanin, phycocyanin and phycoerythrin). The results showed a high variability of biochemical composition, allowing for the targetting of specific bioresources for particular purposes, including functional foods. This work provides the foundation for a biorefinery strategy implementation plan, for which specific macroalgae may be targeted for valuable and beneficial compounds.

scholarly journals Temporal and spatial variation in adult and juvenile mobile fauna associated with natural and artificial coastal habitats

2021 ◽  
Vol 168 (2) ◽  
Author(s):  
Alice E. Hall ◽  
Roger J. H. Herbert ◽  
Richard Stafford
Keyword(s):  
Dicentrarchus Labrax ◽  
Early Summer ◽  
Coastal Habitats ◽  
Artificial Structures ◽  
Artificial Habitats ◽  
Mobile Species ◽  
Spatial And Seasonal Variation ◽  
Black Bream ◽  
Temporal And Spatial ◽  
Natural Reefs

AbstractCoastal habitats are important for commercially exploited and protected species of fish and larger mobile invertebrates. The addition of artificial structures within the marine environment has the potential to alter the connectivity between habitats and to affect metapopulations of a region. Baited remote underwater videos (BRUV) were used to investigate the spatial and seasonal variation in abundance of adult and juvenile mobile species associated with subtidal natural and artificial habitats within Poole Bay on the south coast of England in 2019. Metrics included the relative maximum abundance (MaxN), number of species seen (S), assemblage structure and size range of fish. Higher values of MaxN and S were recorded on artificial structures in the spring and early summer; however, this pattern was reversed by mid-summer and early autumn when more fish were recorded on the natural reefs. Yet overall differences in MaxN and S between habitats were not significant. Differences in assemblage composition between habitats varied monthly, but this was mostly driven by particular sites. Although most fish observed were juveniles, there were some seasonal differences in the size of fish using natural and artificial sites, especially bib (Trisopterus luscus), black bream (Spondyliosoma cantharus), bass (Dicentrarchus labrax) and pollack (Pollachius pollachius). The artificial habitats in this region appeared to be important in certain months, so temporal studies of this type need to be incorporated within surveys, particularly those in proximity to protected areas.

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