The use of umbrella fish species to provide a more comprehensive approach for freshwater conservation management

2021 ◽  
Author(s):  
Alyssa N. Obester ◽  
Robert A. Lusardi ◽  
Nicholas R. Santos ◽  
Ryan A. Peek ◽  
Sarah M. Yarnell
Keyword(s):  
Fish Species ◽  
Conservation Management ◽  
Comprehensive Approach ◽  
Freshwater Conservation

scholarly journals Identifying important species that amplify or mitigate the interactive effects of human impacts to marine food webs

2018 ◽  
Author(s):  
gary griffith
Keyword(s):  
Food Webs ◽  
Fish Species ◽  
Conservation Management ◽  
Interaction Effects ◽  
Mesopelagic Fish ◽  
Additive Effects ◽  
Important Species ◽  
Marine Food Webs ◽  
Key Species ◽  
Marine Food

Some species may be more important in transferring the complex effects of multiple human stressors through marine food-webs. Here we show a novel approach to help inform conservation management in identifying such species. Simulating changes in biomass between species from the interaction effects of ocean warming and ocean acidification, and fisheries to year 2050 on the south-eastern Australian marine system, we constructed annual interaction effect networks (IEN’s). Each IEN was composed of the species linked by either an additive (sum of the individual stressor response), synergistic (lower biomass compared with additive effects) or antagonistic (greater biomass compared with additive effects) response. Structurally, over the simulation period, the number of species and links in the synergistic IEN’s increased and the network structure became more stable. The stability of the antagonistic IEN’s decreased and became more vulnerable to the loss of species. In contrast, there was no change in the structural attributes of species linked by an additive response. Using indices of species importance common in food-web and network theory, we identified the most important species within each IEN for transferring the interaction stressor effect on changes in biomass via local, intermediate and global interaction pathways. Mid trophic level mesopelagic fish species were most often identified as the key species within the synergistic IEN’s and phytoplankton or zooplankton within the antagonistic IEN’s. For the additive response commonly assumed in conservation management demersal fish species were identified by all of the indices. Apart from identifying the most important species, we also identified other important species for transferring the different interaction effects. Knowing the most important species for transferring synergistic or antagonistic responses may help inform conservation strategies for conserving ecosystems under increasing multiple stressor impacts.

Using telemetry data to develop conceptual models of movement to support the management of riverine fishes

2017 ◽  
Vol 68 (8) ◽  
pp. 1567 ◽  
Author(s):  
W. M. Koster ◽  
D. A. Crook
Keyword(s):  
Fish Species ◽  
Life Histories ◽  
Environmental Changes ◽  
Conservation Management ◽  
Management Strategies ◽  
Fish Populations ◽  
Limited Information ◽  
Ecological Requirements ◽  
Management Actions ◽  
Species Specific

As human demands for freshwater resources increase, there is growing concern for the long-term viability of native fish populations globally. Understanding the movements of fish, and how these are influenced by or respond to environmental changes, is a critical knowledge requirement for effective management; however, limited information on the ecological requirements of many fish species currently hinders our ability to sustainably manage fish populations. In this paper, we use four native Australian fish species with contrasting life histories as case studies to demonstrate how data derived from acoustic and radiotelemetry studies can be synthesised into conceptual diagrams to help scientists and managers develop targeted and effective conservation management strategies. Commonalities in the observed movement patterns were observed among the species despite their contrasting life histories, but there were also important differences that need to be recognised in the development of species-specific conservation management strategies. We conclude by discussing how such information has been or could be incorporated into conservation management actions, including the implementation of environmental flow releases and the identification of critical habitats.

scholarly journals First records of freshwater fish species in Colombia: extending the distribution of 17 Amazonian and Orinoco fish species

Check List ◽  
2020 ◽  
Vol 16 (5) ◽  
pp. 1395-1406
Author(s):  
Juan D. Bogotá-Gregory ◽  
Flavio C. T. Lima ◽  
Carlos DoNascimiento ◽  
Astrid Acosta-Santos ◽  
Francisco A. Navarro-Villa ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Conservation Management ◽  
Sustainable Use ◽  
Fish Diversity ◽  
Rigorous Analysis ◽  
Geographic Ranges ◽  
Freshwater Fish Species ◽  
First Time ◽  
New Occurrences

Based on a rigorous analysis of fish collections of the Instituto Amazónico de Investigaciones Científicas (Sinchi) and new collections by us, we report new Colombian records and geographical range extensions for freshwater fish species. The new occurrences include representatives of four taxonomic orders, eight families, and 13 genera. Our findings expand the geographic ranges of fish species within the Amazon and Orinoco basins and include species reported from Colombia for the first time. This information is fundamental for completion of species inventories, as well as analyses of freshwater fish diversity patterns at macroecological scales. In addition, our data provide useful information for the formulation of strategies for the conservation, management, and sustainable use of biodiversity.

A Comprehensive Approach to Sexual Offending?

PsycCRITIQUES ◽  
2007 ◽  
Vol 52 (1) ◽  
Author(s):  
Juanita N. Baker
Keyword(s):  
Sexual Offending ◽  
Comprehensive Approach

Characterization and evolution of spearfishing in Madeira archipelago, Eastern Atlantic

2020 ◽  
Vol 33 ◽  
pp. 15
Author(s):  
Roi Martínez-Escauriaza ◽  
Claudio Vieira ◽  
Lídia Gouveia ◽  
Nuno Gouveia ◽  
Margarida Hermida
Keyword(s):  
Fish Species ◽  
Young Men ◽  
Coastal Areas ◽  
Teleost Fishes ◽  
The North ◽  
Southeast Coast ◽  
Madeira Archipelago ◽  
First Time

Data obtained from licenses of spearfishers and surveys conducted in 2004 and 2017 allowed for the analysis, for the first time, of the practice of spearfishing in the Madeira archipelago. Only a small percentage of the population practices spearfishing, mostly local young men. Most of them practice the activity with a partner throughout most of the year and along most of the island's coastal areas, although preferentially along the North and Southeast coast. Results show how, in recent years, despite the population of spearfishers decreasing, the abundance in the annual catch potentially increased, probably due to the higher investment of time in this activity. It has been observed that many fishers complement their catches with manual collecting of invertebrates. Overall, 40 teleost fishes and also 4 crustaceans and 8 molluscs were identified. The most frequently captured fish species were parrotfish and white seabream, while limpets were the most collected invertebrates in both selected periods.

Comprehensive Approach to Treatment of Pediatric Skull Base Lesions: A Case Series

2020 ◽  
Author(s):  
Craig Miller ◽  
Alizabeth Weber ◽  
Kate Carroll ◽  
Neeraja Konuthula ◽  
Abdullah Feroze ◽  
...  
Keyword(s):  
Skull Base ◽  
Case Series ◽  
Comprehensive Approach ◽  
Skull Base Lesions

PFI OECD - Framework for Strong investment Policy

2015 ◽  
pp. 151-156
Author(s):  
A. Koval
Keyword(s):  
Sustainable Development ◽  
Foreign Direct Investment ◽  
Direct Investment ◽  
Comprehensive Approach ◽  
Investment Policy ◽  
Policy Framework ◽  
Investment Climate ◽  
Systematic Monitoring ◽  
Investment Tool ◽  
National Investment

The improving investment climate objective requires a comprehensive approach to the regulatory framework enhancement. Policy Framework for Investment (PFI) is a significant OECD’s investment tool which makes possible to identify the key obstacles to the inflow foreign direct investment and to determine the main measures to overcome them. Using PFI by Russian authorities would allow a systematic monitoring of the national investment policy and also take steps to improve the effectiveness of sustainable development promotion regulations.

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