Quality assessment of escaping silver eel (Anguilla anguilla L.) to support management and conservation strategies in Mediterranean coastal lagoons

2020 ◽  
Vol 192 (9) ◽  
Author(s):  
Fabrizio Capoccioni ◽  
Chiara Leone ◽  
Claude Belpaire ◽  
Govindan Malarvannan ◽  
Giulia Poma ◽  
...  
Keyword(s):  
Quality Assessment ◽  
Coastal Lagoons ◽  
Anguilla Anguilla ◽  
Conservation Strategies ◽  
Silver Eel ◽  
Management And Conservation

scholarly journals Neotropical coastal lagoons: an appraisal of their biodiversity, functioning, threats and conservation management

2008 ◽  
Vol 68 (4 suppl) ◽  
pp. 967-981 ◽  
Author(s):  
FA. Esteves ◽  
A. Caliman ◽  
JM. Santangelo ◽  
RD. Guariento ◽  
VF. Farjalla ◽  
...  
Keyword(s):  
Anthropogenic Impacts ◽  
Coastal Lagoons ◽  
Conservation Strategies ◽  
Human Occupation ◽  
Species Introduction ◽  
Government Officials ◽  
Private Companies ◽  
Aquatic Biodiversity ◽  
Scenic Beauty ◽  
Functional Regulation

Neotropical coastal lagoons (NCL) are human-dominated ecosystems. Their distribution along densely populated coastal areas of developing countries makes these systems among the most threatened in the world. Here, we summarize some aspects of the causes and consequences of NCL biodiversity, their functioning, their importance to the surrounding populations, their fragility, and their responses to local and global anthropogenic impacts and the challenges that Neotropical countries face in conserving these systems. Although still scarce and geographically concentrated, a growing body of studies has shown that NCLs are physiographically diversified systems, which harbor a considerable and particular proportion of the Neotropical inland aquatic biodiversity. Despite the fact that coastal lagoons are ecotones that are intricately connected to surrounding environments, they develop mechanisms for structural and functional regulation, which confer to these systems higher productivity and carrying capacities than surrounding ecosystems. Such traits attract residential developments and subsidize local traditional populations with important economic and aesthetic ecosystem revenues such as fisheries and scenic beauty. However, the disorganized human occupation around NCLs are causing profound impacts such as eutrophication, salinization, exotic species introduction, as well as other effects, which are ultimately imposing major habitat degradations and biodiversity extirpations in NCLs. We argue that interdisciplinary conservation strategies, which integrate scientific expertise, government officials, private companies and the general public, are the most likely to overcome the geographic and economic obstacles to NCL conservation.

scholarly journals Diversity and composition of plant species in the forest over limestone of Rajah Sikatuna Protected Landscape, Bohol, Philippines

2020 ◽  
Vol 8 ◽  
Author(s):  
Wilbert Aureo ◽  
Tomas Reyes ◽  
Francis Carlo Mutia ◽  
Reizl Jose ◽  
Mary Beth Sarnowski
Keyword(s):  
Plant Species ◽  
Conservation Strategies ◽  
Importance Value ◽  
Accumulation Curve ◽  
Representative Species ◽  
Special Area ◽  
Plant Families ◽  
Area Of Concern ◽  
Common Plant ◽  
Management And Conservation

Rajah Sikatuna Protected Landscape (RSPL), considered the last frontier within the Central Visayas region, is an ideal location for flora and fauna research due to its rich biodiversity. This recent study was conducted to determine the plant species composition and diversity and to select priority areas for conservation to update management strategy. A field survey was carried out in fifteen (15) 20 m x 100 m nested plots established randomly in the forest over limestone of RSPL from July to October 2019. Three hundred and sixty eight (368) species of plants were identified up to species level. This represented 327 angiosperms, one gymnosperm and 40 pteridophytes. Common plant families with more than 10 representative species were Moraceae, Meliaceae, Lauraceae, Dipterocarpaceae, Rubiaceae, Myrtaceae, Phyllanthaceae, Annonaceae, Araceae and Lauraceae. There were 93 (28%) endemic and 46 (14%) threatened species (vulnerable to critically endangered) observed. The cluster analysis and species accumulation curve suggests that plant species are not homogeneously distributed which implies that different management and conservation strategies should be implemented across RSPL. These results not only indicate the importance of RSPL, but also highlights areas with higher diversity and concentration of threatened and endemic species as a special area of concern. Furthermore, areas with high biodiversity value were recommended for immediate protection, while areas with low biodiversity value were recommended for reforestation programmes using species with high importance value.

scholarly journals Yield per recruit from stocking two different sizes of eel (Anguilla anguilla) in the brackish Roskilde Fjord

2015 ◽  
Vol 73 (1) ◽  
pp. 158-164 ◽  
Author(s):  
Michael I. Pedersen ◽  
Gorm H. Rasmussen
Keyword(s):  
Growth Rate ◽  
Scientific Information ◽  
Anguilla Anguilla ◽  
Silver Eel ◽  
Glass Eel ◽  
Recovery Plan ◽  
Yellow Eel ◽  
Roskilde Fjord ◽  
Yield Per Recruit ◽  
The Eu

Abstract Stocking of young eel is widely practised, as a measure, to meet the management target of the EU eel recovery plan. The target of the recovery plan is to increase the escapement to 40% silver eel biomass, relative to pristine conditions. The scientific information to predict the outcome in silver eel biomass from stocking is limited and may depend on whether translocation of wild glass eel or yellow eel is used, or if the stocked eels used are yellow eel from aquaculture. We evaluated the yield from stocking two different sizes, 3 and 9 g eels from aquaculture. A professional fishery recaptured 12.7% of the 3 g and 9.4% of the 9 g eels, originally stocked. Growth rate and mortality rate were different for the two stocked sizes, favouring the small eels. Brutto yield per recruit (YPR) was 13 and 9.2 g and netto YPR was 9.8 and 0.31 g for 3 and 9 g eel, respectively. We conclude that there seems to be no advantage in using larger 9 g eels compared with small 3 g eels for stocking.

Organochlorine pesticides and PCBs in European eel (Anguilla anguilla) from Spanish Balearic coastal lagoons

2021 ◽  
Vol 350 ◽  
pp. S182
Author(s):  
A. Pérez-Vegas ◽  
M. Pérez-López ◽  
E. Barcala ◽  
E. Trofimova ◽  
D. Romero ◽  
...  
Keyword(s):  
Organochlorine Pesticides ◽  
Coastal Lagoons ◽  
Anguilla Anguilla ◽  
European Eel

scholarly journals New records of Hippocampus patagonicus Piacentino & Luzzatto, 2004 (Teleostei: Syngnathidae) from the coast of Paraná, southern Brazil

Check List ◽  
2016 ◽  
Vol 12 (1) ◽  
pp. 1822
Author(s):  
Luci F. Pereira ◽  
Rosana B. Silveira ◽  
Vinícius Abilhoa
Keyword(s):  
New Records ◽  
Conservation Strategies ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Southern Brazil ◽  
Incidental Capture ◽  
Additional Information ◽  
Trawl Fishery ◽  
Shrimp Trawl ◽  
Management And Conservation

Abstract: The seahorse Hippocampus patagonicus (Teleostei: Syngnathidae) is the southernmost occurring species of its genus in the South Atlantic Ocean. Its distribution seems to be restricted to the Southwestern Atlantic, along the coasts of Argentina and Brazil. Herein we report the incidental capture of six individuals as bycatch in the shrimp trawl fishery off the coast of Paraná, southern Brazil. Additional information on the geographic distribution of H. patagonicus, together with its ecology and life history, is important for conservation of this threatened species. These data can promote the development of appropriate management and conservation strategies for populations along the Brazilian coast. 

scholarly journals European silver eel (Anguilla anguilla L.) migration behaviour in a highly regulated shipping canal

2018 ◽  
Vol 206 ◽  
pp. 176-184 ◽  
Author(s):  
Pieterjan Verhelst ◽  
Raf Baeyens ◽  
Jan Reubens ◽  
Jean-Phillippe Benitez ◽  
Johan Coeck ◽  
...  
Keyword(s):  
Anguilla Anguilla ◽  
Silver Eel ◽  
Migration Behaviour

scholarly journals Water Quality Assessment along With Pollution Sources of the Halda River

2017 ◽  
Vol 43 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Md Shafiqul Islam ◽  
Ali Akbar ◽  
Aysha Akhtar ◽  
Md Manzoorul Kibria ◽  
Md Simul Bhuyan
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Preventive Measures ◽  
Pollution Index ◽  
Water Quality Assessment ◽  
River Pollution ◽  
Total Alkalinity ◽  
Sewage Contamination ◽  
Conservation Of Natural Resources ◽  
Management And Conservation

In the present study water quality assessment and land based sources of pollutants discharged into the Halda River through four major canals were investigated. The ranges of pH, DO, BOD, NO3-N, PO4-P, chloride and total alkalinity of the collected samples varied from 7.1-8.8, 3.35-4.70 mg/L, 0.055-5.0 mg/L, 0.12-3.1 mg/L, 0.06-0.16 mg/L, 8.4-69.30 mg/L and 73-220 mg/L, respectively. pH, DO, BOD showed significant changes at Mondakini Canal and Chengkhali Canal for monsoon, post-monsoon and winter (p <0.05) while chloride at Chengkali Canal for all seasons (p≤0.05). Moreover, TA, NO3-N and PO4-P exhibited significant variation in the concentration at Mondakini Canal, Madari Canal and Chengkali Canal for three seasons (p ≤0.05). River Pollution Index indicated that the water of river at Mondakini Canal, Madari Canal, Chengkhali Canal and Khondakia Canal varied from low to moderate pollution. According to the interviewers, the Halda River is being polluted due to industrial waste (53%), sewage contamination (20%), tobacco farming (13%), rubber dam (8%) and sand extraction (6%). Therefore, necessary preventive measures should be taken in order to control the unwise and unauthorized discharge of harmful pollutants into the Halda River for the better management and conservation of natural resources. Asiat. Soc. Bangladesh, Sci. 43(1): 61-70, June 2017

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