A5051821002- Marine and coastal ecosystems
- Marine and fisheries research
- Marine Biology and Ecology Research
- Isotope Analysis in Ecology
- Oceanographic and Atmospheric Processes
- Marine Bivalve and Aquaculture Studies
- Coral and Marine Ecosystems Studies
- Ocean Acidification Effects and Responses
- Microbial Community Ecology and Physiology
- Fish Ecology and Management Studies
- Methane Hydrates and Related Phenomena
- Marine and environmental studies
- Geology and Paleoclimatology Research
- Ocean Waves and Remote Sensing
- Food Industry and Aquatic Biology
- Physiological and biochemical adaptations
- Climate variability and models
- Aquaculture Nutrition and Growth
- Crustacean biology and ecology
- Fish Biology and Ecology Studies
- Finance, Taxation, and Governance
- Water Quality Monitoring Technologies
- Marine animal studies overview
- Aquatic Ecosystems and Phytoplankton Dynamics
- Planetary Science and Exploration
Universidad de Las Palmas de Gran Canaria
2016-2025
Universidad del Mar
2008-2009
Significance High concentrations of floating plastic debris have been reported in remote areas the ocean, increasing concern about accumulation litter on ocean surface. Since introduction materials 1950s, global production has increased rapidly and will continue coming decades. However, abundance distribution open are still unknown, despite evidence affects organisms ranging from small invertebrates to whales. In this work, we synthetize data collected across world provide a map first-order...
With a current estimate of ~1,000 million tons, mesopelagic fishes likely dominate the world total biomass. However, recent acoustic observations show that biomass could be significantly larger than estimate. Here we combine modelling and sensitivity analysis from Malaspina 2010 Circumnavigation Expedition to previous needs revised at least one order magnitude higher. We there is close relationship between open ocean primary production, energy transfer efficiency phytoplankton in higher what...
Here we review all published data on phytoplankton growth and microzooplankton grazing using the dilution technique to better understand role of this group grazers in different regions oceans, identify knowledge gaps that require future efforts. A total 1525 points assimilated from 110 studies were included grouped biogeographic subsets defined by Longhurst et al. [(1995) An estimate global primary production ocean satellite radiometer data. J. Plankton Res., 17, 1245–1271]. Total median...
Abstract Fishes are the dominant vertebrates in ocean, yet we know little of their contribution to carbon export flux at regional global scales. We synthesize existing information on fish‐based coastal and pelagic waters, identify gaps challenges measuring this approaches address them, recommend research priorities. Based our synthesis passive (fecal pellet sinking) active (migratory) fishes, estimated that fishes contribute an average (± standard deviation) about 16.1% 13%) total out...
Abstract Oligotrophic and productive areas of the ocean differ in plankton community composition biomass transfer efficiency. Here, we describe along a latitudinal transect tropical subtropical Atlantic Ocean. Prochlorococcus dominated autotrophic at surface mixed layer oligotrophic stations, replaced by phototrophic picoeukaryotes Synechococcus waters. Depth-integrated microzooplankton was higher than mesozooplankton showing similar biomasses Dinoflagellates waters but ciliates upwelling...
Abstract The biological pump transports organic carbon produced by photosynthesis to the meso- and bathypelagic zones, latter removing from exchanging with atmosphere over centennial time scales. Organisms living in both zones are supported a passive flux of particles, transported deep-sea through vertical zooplankton migrations. Here we report globally-coherent positive relationships between biomass epi-, meso-, layers average net primary production (NPP). We do so based on global...
Quantification of the actual amount carbon export to mesopelagic layer by both zooplankton and micronekton is at present a gap in knowledge biological pump. These organisms perform diel vertical migrations exporting through respiration, excretion, mortality, egestion during their residence depth. The role active flux nowadays partially assessed. However, scarcely known only few studies addressed this downward transport. Even less about capacity communities ocean. Here, we show results across...
Published data on the biomass and specific respiration rates of mesozooplankton in oceans across all latitudes were combined to assess their community a global basis. Mesozooplankton was higher boreal/anti-boreal polar waters, intermediate equatorial waters lowest subtropical gyres. Specific highest decreased rapidly poleward. Global upper 200 m integrated over 10.4 ± 3.7 (SE) Gt C year−1 (n = 838). Below epipelagic zone, living mesopelagic (200–1000 m) bathypelagic (below 1000 zones...
The measurement of mesozooplankton biomass in the ocean requires use analytical procedures that destroy samples. Alternatively, development methods to estimate from optical systems and appropriate conversion factors could be a compromise between accuracy need preserve samples for further taxonomic studies. body area recorded by an counter or camera, converting digitized organism into individual biomass, was suggested as suitable method total biomass. In this study, crustacean subtropical...
In order to establish the potential role of Antarctic krill ( Euphausia superba ) in recycling bioactive elements, we have quantified release iron, phosphate, and ammonia by these organisms along Peninsula sector Southern Ocean. The experimental results suggested that presence has a significant impact on ambient iron concentrations, as large amounts this trace element were released (22–689 nmol Fe g Dry Weight −1 h , equivalent 0.2 4.3 L d ). Half occurred within first hour experiment,...
On October 10 2011 an underwater eruption gave rise to a novel shallow submarine volcano south of the island El Hierro, Canary Islands, Spain. During large quantities mantle-derived gases, solutes and heat were released into surrounding waters. In order monitor impact on marine ecosystem, periodic multidisciplinary cruises carried out. Here, we present initial report extreme physical-chemical perturbations caused by this event, comprising thermal changes, water acidification, deoxygenation...
The plankton outburst during the so‐called late winter bloom in subtropical waters was studied relation to lunar illumination Canary Island waters. Nutrient enrichment by mixing and dust deposition promoted a of phyto‐ zooplankton. Mesozooplankton biomass increased as progressed but peaked every full moon decreased thereafter because effect predation interzonal diel vertical migrants (DVMs). pattern similar one described lakes due fishes confirms that this phenomenon is important sea....
Abstract Lanternfishes (Myctophidae) constitute the most important component of daily vertically migrating mesopelagic fish community. This research addresses estimation trophic position and diet myctophids using stable isotope analyses. Fishes were collected across central Atlantic, from a very productive zone influenced by Mauritanian upwelling to western oligotrophic equatorial waters. The survey also encompassed low oxygen concentration in layers. Determinations δ13C δ15N values made on...
Copepods, the most abundant individuals of mesozooplankton, play a pivotal role in marine food webs and carbon cycling. However, few studies have focused on their diversity environmental factors influencing it. The objective present study is to model alpha beta copepods across tropical subtropical ecoregions Atlantic Ocean using both taxonomic functional approaches. used dataset 226 copepod species collected by stratified plankton hauls (0-800 m depth) equatorial Atlantic, from oligotrophic...