John Ramírez

ORCID: 0000-0002-0262-8200
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About
Contact & Profiles
Research Areas
  • Marine and fisheries research
  • Marine Bivalve and Aquaculture Studies
  • Coral and Marine Ecosystems Studies
  • Business, Innovation, and Economy
  • Ichthyology and Marine Biology
  • Marine and coastal plant biology
  • Muscle metabolism and nutrition
  • Marine Biology and Ecology Research
  • Cephalopods and Marine Biology
  • Species Distribution and Climate Change
  • Demographic Trends and Gender Preferences
  • Ruminant Nutrition and Digestive Physiology
  • Plant Growth Enhancement Techniques
  • Fish Biology and Ecology Studies
  • Fish Ecology and Management Studies
  • Human-Animal Interaction Studies
  • Agriculture Sustainability and Environmental Impact
  • Aquaculture Nutrition and Growth
  • Supply Chain and Inventory Management
  • Management and Optimization Techniques
  • Marine Biology and Environmental Chemistry
  • Fish biology, ecology, and behavior
  • Scheduling and Optimization Algorithms

Instituto de Investigacións Mariñas
2022

Galway-Mayo Institute of Technology
2021-2022

Institut de Ciències del Mar
2017-2021

Institut Català de Ciències del Clima
2018

Universidad de Bogotá Jorge Tadeo Lozano
2005-2016

Universidad de Antioquia
2015

Small pelagic fish (SPF) in the western Mediterranean Sea are key elements of marine food web and important terms biomass fisheries catches. Significant declines biomass, landings, changes age/size structure sardine Sardina pilchardus anchovy Engraulis encrasicolus have been observed recent decades, particularly northern area Sea. To understand different patterns SPF populations, we analyzed life history traits [total length at age, maturity, gonadosomatic index (GSI), body condition (Kn)]...

10.3389/fmars.2021.570354 article EN cc-by Frontiers in Marine Science 2021-08-23

Management alternatives based on fishing effort for the demersal fisheries in western Mediterranean were tested, with novelty of examining management at temporal scales smaller than one year. Nine scenarios considered basis input control: decrease number days, which may correspond to cessation activity vessels or lower fleet; and implementation seasonal closures one-, two- three-month duration winter, spring, summer autumn. The approach is a multispecies multigear bioeconomic model. We...

10.3989/scimar.04937.29b article EN cc-by Scientia Marina 2019-12-03

ABSTRACT Objective. To evaluate the effect of Kikuyu grass (Pennisetum clandestinum) harvested at two different ages and three forage: concentrate supplement ratios (F/C) on methane (CH4) production, dry matter digestibility (DMD), fermentation profile using in vitro gas production technique. Materials methods. six treatments, resulting from combination pasture age (30 or 60 days) F/C (100/0, 75/25, 50/50) were evaluated a 2x3 factorial design. The response variables measured 6, 12, 24 48...

10.21897/rmvz.43 article EN cc-by-sa Revista Mvz Córdoba 2015-09-25

Twelve laboratory experiments to evaluate the egestion in short time periods at herbivorous copepod Eucalanus subtenuis, were carried out with aim obtain data about morphometry, volume, faeces production rate and coprophagy index, as well detect some feeding strategy. Two treatments different phytoplankton size classes (measured chlorophyll a concentration) applied copepod: 0 -25 μm (pico nanophytoplankton) 25-85 (microphytoplankton). The food source was obtained from surface water Caribbean...

10.25268/bimc.invemar.2005.34.0.240 article EN Boletín de Investigaciones Marinas y Costeras 2016-01-01

This is the final report of European Commission funded research project DRuMFISH (service contract n° EASME/EMFF/2014/l.3.2.4/ SI2.721116). The main aim was to develop models and strategies for providing advice mixed fisheries that account for: (i) fishing mortality ranges consistent with MSY, (ii) all fish caught being landed, (iii) significant components marine ecosystem lacking key biological information. In order meet this aim, delivered a review assessment approaches data-poor stocks,...

10.2826/88613 article EN 2018-01-01

SC NR. 02 - TENDER EASME/EMFF/2016/32 SPELMED.-- 29 pages, 14 figures, 1 table, 2 annexes

10.20350/digitalcsic/12671 article FR 2018-08-01
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