scholarly journals Checklist of freshwater fishes from Loreto, Peru

2021 ◽  
Vol 28 (especial) ◽  
pp. e21911
Author(s):  
Vanessa Meza-Vargas ◽  
Dario R. Faustino-Fuster ◽  
Junior Chuctaya ◽  
Max Hidalgo ◽  
Hernán Ortega Torres

This study presents an extensive review of published and unpublished occurrence records of fish species in the Loreto department. Located in the northeast of the country, Loreto is the most geographically extensive region in the Peruvian territory. Despite the increase in fish collections in Loreto in recent years, the ichthyofauna of this department needs to be more documented. Based on a database of scientific collections and bibliographic information, an updated checklist of the freshwater fishes from Loreto is presented. The results reveal a rich and diversified ichthyofauna, with 873 species distributed in 331 genera, 50 families and 15 orders. The main groups are Characiformes (42.6%), Siluriformes (34.8%), Gymnotiformes (8.6%) and Cichliformes (7.4%). Part of the ichthyofauna has restricted distribution for Loreto (4.7%). In addition, 9.0% of species from Loreto are used in fisheries. Meanwhile, 219 species (25%) were categorized according to the IUCN criteria where only six species (0.7%) are currently considered threatened species (CR, EN or VU). The results presented in this work indicate that this department needs more studies to know the biodiversity of fish, likewise, the information presented constitutes a contribution to the knowledge of fish diversity that would support environmental management actions and decision-making aimed at conserving one of the most diverse departments of Peru.

Author(s):  
Fernando Ramos-Quintana ◽  
Efraín Tovar-Sánchez ◽  
Hugo Saldarriaga-Noreña ◽  
Héctor Sotelo-Nava ◽  
Juan-Paulo Sánchez-Hernández ◽  
...  

This paper proposes a Case-Based Reasoning (CBR) system to contribute to reinforce the sustainable performance of an environmental management system. The CBR system aims to support the decision-making process to select environmental management actions aimed at reducing risky trends of the environmental state of a region. The CBR system takes advantage of a set of situation-solution pairs called cases, which are stored in a memory and then retrieved as candidates to solve new problems. Situations in this work are represented by a set of risky trends of the following key environmental variables: CO2 emissions, Air-Quality, Loss of Vegetation Cover, Water Availability, and Solid Waste, whose combination damage the environmental state quality of a region. Meanwhile, solutions are represented by a set of environmental management actions. Similar situations to a given current situation are retrieved from the memory of cases and then their solutions are combined, through an adaptation mechanism, until the solution of the current problem is obtained. We used risky trends derived from real data related to the environmental states of a Mexican region to test the proposed CBR system. The results obtained provided insights into the potential of CBR systems to support the decision-making process to select environmental management actions aimed at reducing risky trends of current environmental states.


2019 ◽  
Vol 11 (20) ◽  
pp. 5649 ◽  
Author(s):  
Fernando Ramos-Quintana ◽  
Efraín Tovar-Sánchez ◽  
Hugo Saldarriaga-Noreña ◽  
Héctor Sotelo-Nava ◽  
Juan Paulo Sánchez-Hernández ◽  
...  

This paper proposes a hybrid method integrating case-based reasoning (CBR) and analytic hierarchy process (AHP) methods to reinforce the sustainable performance of an environmental management system. The CBR–AHP method aims to support the decision-making process to select environmental management actions (EMAs) aimed at reducing risky trends of the environmental state of a region. The CBR methods takes advantage of a set of situation–solution pairs called cases, which are stored in a memory and then retrieved as candidates to solve new problems. Situations in this work are represented by a set of risky trends of key environmental pathways (KEPs) related to CO2 emissions, air quality, loss of vegetation cover, water availability, and solid waste, the combination of which damage the environmental state quality of a region. Meanwhile, solutions are represented by a set of EMAs. Similar situations to a given current situation are retrieved from the memory of cases, and then their solutions are combined through an adaptation mechanism, until the solution of the current problem is obtained. The AHP method is used to assign weights to environmental variables and to alternative solutions represented by EMAs. We used risky trends derived from real data related to the environmental states of a Mexican region to test the proposed CBR–AHP hybrid method. The results obtained provided insights into the potential of the CBR–AHP hybrid method to support the decision-making process to select EMAs aimed at reducing risky trends of current environmental states.


2021 ◽  
Author(s):  
◽  
Bryn Cal Hickson Rowden

<p>In recent years, there has been significant efforts to create frameworks in which Māori values are incorporated as part of environmental management processes in Aotearoa New Zealand(Forster, 2014; Harmsworth et al., 2016). This research explores the factors that influence the incorporation of Māori values at the local government level, and what barriers Māori values face to being incorporated in environmental management. This research focused on a case study of the Ruamāhanga Whaitua Committe Implementation Programme process in the Wellington region. Semi-structured interviews were used to collect information on the opinions of members of the Ruamāhanga Whaitua Committee. The interviews were analysed using a critical theory approach. The research found that there was a clear discrepancy between the values and behaviours expressed by some non-Māori members of the Committee. The result of such a discrepancy was that Māori values were not sufficiently part of environmental decision making. Such a discrepancy was a result of the political structures of the Regional Council’s Whaitua Implementation Programme process. The majority of the decision-making power was found to be situated ‘higher’ up in the organisation, outside of the Committee. Overall this research found that there are important opportunities to make sure iwi values are not only included, but form the basis of decisions.</p>


2021 ◽  
Vol 4 ◽  
Author(s):  
Ramizah Abdull Rahman ◽  
Nurul Fizatul Nabilah Osman ◽  
Adibah Abu Bakar ◽  
Syazwan Saidin ◽  
Intan Faraha Abdul Ghani ◽  
...  

Freshwater species are the most threatened group to be assessed to date by the IUCN. Freshwater fish has enormous importance as animal protein supplies for human, and it is estimated that 6% of the world annual animal protein supplies come from freshwater fishes. Barcoding projects have been initiated all over the world and the field is constantly growing. In Malaysia however, the field has not been deeply investigated and not many barcoding projects have been undertaken especially for freshwater fishes. The aim of our study is to support the progress of DNA barcode project, especially for inland reservoirs like Tasik Raban, Perak. A Standard methodology using Cytochrome c oxidase subunit 1 (COI) marker was developed to ensure native fishes are barcoded taxonomically and molecularly and ready to be accessed through online databases. Such public references can help increase awareness on local fish diversity management. Information on taxonomy and molecular characterization can be used to plan further conservation programmed especially for depleted, unrecognized, and cryptic native species.


Author(s):  
N. B. Harmancioglu ◽  
O. Fistikoglu ◽  
S. D. Ozkul ◽  
M. N. Alpaslan

2005 ◽  
Vol 52 (6) ◽  
pp. 11-17 ◽  
Author(s):  
J. Ravetz

After centuries of optimism, science has become problematic and compromised. We can no longer assume that innovations are safe until proven dangerous. The ‘technocratic’ approach to science, with its reductionist methodology and its corporate control, is no longer appropriate. We need a ‘precautionary’ science that will be ‘post-normal’ in character. For this, we contrast ‘applied science,’ like the ‘puzzle-solving’ of Kuhn's ‘normal science’ and the ‘professional consultancy’ like the practice of the surgeon or engineer. Rather, we have a situation where ‘facts are uncertain, values in dispute, stakes high, and decisions urgent.’ For high-quality decision-making, we need an ‘extended peer community’ who will bring their ‘extended facts’ to the dialogue. There are a number of initiatives that advance the post-normal programme, including the endeavours of Poul Harremoës and the conference on Uncertainty and Precaution in Environmental Management.


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