Base Digital Recursos Hídricos
y Cambio Climático Macaronesia

Television broadcasting, programa

250605 Hidrogeología

Macaronesia, Exploraciones submarinas, Islas Canarias, INTERREG, MARC 2014-2020, PLANCLIMAC, ISLAS CANARIAS, Macaronesia

CO2, Macaronesia, Carbonate accumulations, INTERREG, MARC 2014-2020, PLANCLIMAC, Macaronesia

Ecosystems, Macaronésia, Oceano Atlântico, Corals, Benthos, Benthic suspension feeders, Capture rates, Flow, Black corals, Ecophysiology, Monitorização, Governo_Açores

Interglacial periods, North Atlantic, Bio-construction, Last Interglacial, Rhodophyta, Volcanic oceanic islands, Evolução climática /Clima, Monitorização, Mac 2014-2020, Planclimac, Interreg, Governo_Açores, Macaronesia

Economic aspects, Macaronésia, Oceano Atlântico, Waste Products, Environmental Monitoring, Socioeconomic Factors, Azores, Plastic pollution, Economic assessment, Stakeholders, Monitorização, Governo_Açores

Paleontology, Macaronésia, Oceano Atlântico, Azores, Fossils, Bioerosion, Carbonates, Geosites, Trace fossils, Ichnology, Monitorização, Governo_Açores

Canary Islands, French Guiana, Guadeloupe, Martinique, Overseas territories, Regional development, Azores, Madeira, Planeamento sustentável, Governança e Governação, Mac 2014-2020, Governo_Açores

Desalination, ENERMAC, INTERREG, MAC 2014-2020, Macaronesia, Performance indicators, Wave energy, Wave energy converters, Wave resource, PLANCLIMAC, Macaronesia

Ecology, Analysis, Ocean bottom, Ocean, Azores, Basalt, Pico Island, Coralline red algae, Epibionts, Shelf transport, Monitorização, Governo_Açores

Case studies, Macaronésia, Oceano Atlântico, Azores, Evolution, Volcanic islands, Topographic reconstruction, Coastal talus-platforms (fajãs), Lagoons, Spit bars and coastal barriers, Planeamento sustentável, Governo_Açores

Macaronésia, Fisheries, Environmental Monitoring, Surveys, Portugal, Madeira, Azores, Fishing, Macro plastic, Water Pollutants, Monitorização, Governo_Açores

Macaronésia, Azores, Oceano Atlântico, Corals, Water Pollution, Environmental Monitoring, Plastic pollution, Marine litter, Marine debris, Benthic fauna, Monitorização, Governo_Açores

Macaronesia, Animal behavior, Coral reefs and islands, Marine sciences, Madeira, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Biodiversity, Freshwater \& Marine Ecology, Life Sciences, Macaronesia, Madeira, Invasive species, Discovery and exploration, New species, Atlantic Ocean, Animal Systematics/Taxonomy/Biogeography, Non-indigenous species, Plant Systematics/Taxonomy/Biogeography, Biological Invasions, Celleporaria, Parasmittina, Macaronésia, Macaronésia, Macaronésia, Macaronés...

Macaronesia, Ocean, Madeira, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Macaronesia, Océano Atlántico, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Ecosystems, Forests and forestry, Biological diversity conservation, Macaronesia, Marine biology, Zoology, Madeira, Aquaculture industry, Research institutes, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Ma...

Macaronesia, Geomorphology, Océano Atlántico, Tectonics, Volcanism, Tectonics (Geology), Volcanoes, Landslides, Large-scale flank collapse, Azores Triple Junction, GPS ground motion, Marine geophysical data, Marine geophysics, Pico-Faial volcanic ridge, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian,...

Macaronesia, Océano Atlántico, Azores, Basalt, Mid-Atlantic Ridge, Mid-ocean ridges, Earth, Mantle, Azores plume, E-MORB, FOZO, Mid-ocean ridge basalts, Plumes (Fluid dynamics), Radiogenic isotopes, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Ma...

Global temperature changes, Biological diversity conservation, Cambio climático, Macaronesia, Biological diversity, Environmental associations, Océano Atlántico, Marine sciences, Algas, Corrientes oceánicas, Madeira, Azores, Islas Canarias, Contaminación Ambiental, Macroalgas, Avrainvillea canariensis, Climatic effects, Mesophotic, Soft-bottoms, Subtidal, Ma...

Environmental aspects, Ecology, Life Sciences, Birds, Neotropics, Macaronesia, Analysis, Madeira, Plant Sciences, Evolutionary Biology, Animal Ecology, Arbitrary preferences, Coloration, Phenotypic variation, Sensory drive, Suboscines, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macar...

Macaronesia, Analysis, Océano Atlántico, Volcanism, Tectonics (Geology), Mid-ocean ridges, Earth, Azores triple junction, Mantle, dynamic topography, lithospheric stresses, mantle dynamics, Seismic waves, tectonic regimes, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macar...

Macaronesia, Madeira, Arbacia lixula, Consumption rates, Food consumption, Gonad index, Invertebrate macro-grazer, Ocean warming, Paracentrotus lividus, Sea urchins, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaroné...

Macaronesia, Sustainable development, Wildlife conservation, Hydroelectric power plants, Fisheries, Fishes, Development, Madeira, Fishing, Fish industry, Dams, Amazon, Fishery evaluation indicators, Riverine communities, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaron...

Macaronesia, Earth Sciences, Geology, Geophysics/Geodesy, Sedimentology, Océano Atlántico, Mineralogy, Azores, Volcanoes, Caldera enlargement, Lithofacies, Magmatic mafic enclaves, Oceanic island, Sete Cidades Volcano, Sub-Plinian eruption, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie,...

Biodiversity, Ecology, Macaronesia, Biological diversity, Marine biology, Phytoplankton, Madeira, Islands, Sea-water, Coccoliths, Subtropical northeast Atlantic, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie,...

Macaronesia, Conservación de la vida silvestre, Oceanografia, Acuicultura, Gran Canaria, Islas Canarias, Entrevista, Macaronesia, Macaronesia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Metals, Heavy - pharmacokinetics, Tissue Distribution, Water Pollutants - analysis, Animals, Environmental Monitoring - methods, Metals, Heavy - analysis, Water Pollutants - pharmacokinetics, Seawater - chemistry, Environmental Exposure, Mollusca - chemistry, Spain

Talaroneis posidoniae, morphology, nana, var, partial large subunit rDNA phylogeny, Plagiogramma atomus, araphid pennate diatom, evolution, Plagiogrammaceae, Neofragilaria nicobarica, Dimeregramma minor, Psammogramma vigoensis

Geologic Sediments - chemistry, Environmental Monitoring, Water Pollution, Chemical - statistics & numerical data, Water Pollutants, Chemical - analysis, Polycyclic Aromatic Hydrocarbons - analysis, Spain

Macaronesia, Oceanografia, Océano Atlántico, Pesca, Acuicultura marina, Recursos marinos, Islas Canarias, Crecimiento Azul, Macaronesia, Macaronesia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Boats and boating, Cigarette boats, Environmental Monitoring - methods, Forecasts and trends, Marine litter, Mediterranean Sea, Monitoring, Oceans and Seas, Plastic pollution, Plastics - analysis, Pollution, Sea surface debris, Seasons, Ships, Spain, Waste Products - analysis, Water Pollutants, Chemical - analysis, Waterfront development

Océano Atlántico, Fish, Wastewater, Marine litter, Plastic pollution, Canary Current

Fishing, Fishing for Litter, Marine litter, Mediterranean Sea, Mitigation measures, MSFD, SWOT

Macaronesia, Océano Atlántico, Cabo Verde, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Macaronesia, Ecología, Oceanografía, reservas marinas, Biodiversidad marina, Islas Canarias, Instrumentación, Microcarburos, Conservación de la Biodiversidad Marina, Macaronesia, Macaronesia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macarones...

Macaronesia, Legislación, Oceanografía, Recursos marinos, Desarrollo económico, Informática, Sostenibilidad, INDIMAR, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Aguas marinas, Contaminación

Desaladoras, desalinización, ENERMAC, INTERREG, Islas Canarias, MAC 2014-2020, Macaronesia, ósmosis inversa, Macaronesia, Macaronesia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Aguas marinas, Contaminación

Adriatic Sea, Debris, Marine litter, Mediterranean Sea, Microplastics

Macaronesia, Medio Ambiente, Piscicultura, Tortugas marinas, Acuicultura marina, Cabo Verde, Reproducción, Embriones, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Biomass, Body size, Competition, Conservation of Natural Resources, Density compensation, Environmental aspects, Fisheries, Fishery management, Fishes, Male, Management, Marine parks and reserves, Marine Protected Areas, Methods, Population Density, Resource limitation, Small-scale fisheries

Macaronesia, Océano Atlántico, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Instituto Tecnolóxico para o Control do Medio Mariño de Galicia

MSFD, Pollution, Marine litter, Eating, Gadiformes, Environmental Monitoring, Animals, Perciformes, Plastics, Water Pollutants, Mediterranean Sea

Macaronesia, Dieta, Nutrición, Acuicultura marina, Biología marina, Fisiología, Zoología Marina, Contaminación Ambiental, Cefalópodos, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Geography, Landforms, Geomorphology, Marshes, Estuaries, Wetlands, Bodies of water, Sedimentary petrology, Petrology, Topography, Geology, Lagoons, Earth sciences, Sea level rise, Subsidence, Rivers, Sediments, Alluvial plains, River deltas, Geologic processes, Land, Physical sciences, Rangelands, Fluvial landforms, Alluvial landforms, River water, Topograph...

Morphology, Fisheries, Marine biology, Physiology, Ecology, Biology, Book reviews, Anatomy & physiology, Reptiles & amphibians, Endocrinology

Herbicides, Coastal waters, Corrosion inhibitors, Biocides, Pharmaceuticals, Caffeine, Sewage - chemistry, Corrosion, United States, Europe, Herbicides - analysis, North Sea, Pacific Ocean, Seawater - chemistry, Pharmaceutical Preparations - analysis, Water Pollutants, Chemical - analysis, Mediterranean Sea, Disinfectants - analysis, Micropollutants

Fast dilute-HCl extraction, SEM-AVS criterion, Acid volatile sulfides, Bioaccessible metallic fraction, Marine pollution assessment

Oceans and Seas, Animals, Salmonella - isolation & purification, Humans, Salmonella - genetics, Salmonella - physiology, Salmonella Infections - microbiology, Bivalvia - microbiology, Phylogeny, Portugal, Salmonella - classification, Water Microbiology

Macaronesia, Oceanografía, Corrientes oceánicas, Islas Canarias, Costa Atlántica, Análisis Estadístico, National Oceanic and Atmospheric Administration (NOAA), Plataforma Oceánica, Corrientes Superficiales, Macaronesia, Macaronesia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macarone...

Macaronesia, plan de conservación de hábitat, Desarrollo Sostenible, Pesca, Silvicultura, Islas Canarias, Macaronesia, Macaronesia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronésia

Environmental aspects, Geochemistry, Research, Ocean circulation, Fracture zones

Genetic markers, Eukaryotes, Analysis, DNA barcoding, Genetic aspects, Methods, Biological diversity, Coral reefs, Marine ecology, Taxonomy, Ecosystems, Cytochrome-c oxidase, Sediments, Biodiversity, Seaweeds, National parks, Case studies, Mitochondria, Databases, Plankton, Primers, DNA, Morphology, Bayesian analysis, rRNA 18S, Deoxyribonucleic acid--DNA, Pa...

mercury pollution, environmental archives, Mediterranean Sea, posidonia oceanica, marine sediments, holocene

China, Dibutyl Phthalate - analogs & derivatives, Dibutyl Phthalate - analysis, Diethylhexyl Phthalate - analysis, Distribution, Environmental Monitoring - methods, Esters, Influencing factors, Leaching, Marine sciences, Mass spectrometry, Ocean, Pacific Ocean, Phthalate esters, Sea-water, Seamount, Seawater - chemistry, Tropical Climate, Tropical Western Pa...

Antarctic marine organisms, Antioxidants, Arctic research, Coelomocytes, Developmental biology, Ecology, Gene expression, Genes, Life Sciences, Marine biology, Microbiology, Nanoparticles, Nanoplastics, Oceanography, Plant Sciences, Polystyrene, Sea-water, Surface active agents, Surface charge, Zoology

Chemical characterization, Coastal system, Guanabara Bay, Microplastic pollution, Plastic, Water contamination

Harbours, Water pollution, Tarragona, Numerical models, Risk management, Models, Theoretical, Risk Assessment, Environmental Monitoring - methods, Environment, Water Pollution - prevention & control, Mediterranean Sea, Water Pollution - analysis, Spain

Bivalves, Hatching, Malformation, Metamorphosis, Plastic litter

SCI, Research trend, Scientometrics, Web of Science, Estuary, Water Pollutants - analysis, Water Pollution - statistics & numerical data, Environmental Monitoring - methods, Polycyclic Aromatic Hydrocarbons - analysis, Geologic Sediments - chemistry, Fresh Water - chemistry, Seawater - chemistry, Water Pollution - analysis, Eutrophication, Estuaries, Polluti...

DNA, Analysis, Physiological aspects, Hypoxia, Genetic aspects, Phylogeny, Bacteria, Photosynthetic, Geography, rRNA 16S, Habitats, Communities, Hot springs, Photopigments, Aquatic habitats, Water springs, Gene sequencing, Coastal ecology, Microorganisms, Phototrophic bacteria, Next-generation sequencing, Deoxyribonucleic acid, Mats, Phylogenetics, Bacteria,...

Anthropogenic marine debris, Assessment, Awareness, Citizen science, Conservation of Natural Resources - methods, Environmental Health - education, Environmental Health - methods, Environmental monitoring, High schools, Italy, Marine sciences, Mediterranean Sea, Plastics - analysis, SEACleaner, Solid Waste - analysis, Students, Surveys and Questionnaires, Te...

Marine debris, Marine litter, Persistent solid waste, Plastic pollution, Waste management

Analysis, Animals, Biobío region, Chile, Ecosystem, Environmental Monitoring - methods, Fish species, Fishes - metabolism, FTIR, Gastrointestinal Contents - chemistry, Microfibers, Microplastics, Oceans and Seas, Plastics - analysis, Plastics - metabolism, Polyethylene terephthalate, Polymer industry, Seafood - analysis, Water Pollutants, Chemical - analysis...

Environmental Monitoring - methods, Humans, Marine aggregates, Marine debris, Mediterranean Sea, Microplastics, Plastics - analysis, Plastics - chemistry, Pollution, Pollution sources, Solid Waste - analysis, Water Pollutants, Chemical - analysis, Water Pollutants, Chemical - chemistry, Weather

Biofouling, Dynamical properties, Environmental Monitoring - methods, Imaging, Three-Dimensional, Lagrangian tracking model, Marine plastic debris, Microplastics, Models, Theoretical, Oceans and Seas, Particle Size, Physical Phenomena, Physical processes, Plastics - analysis, Waste Products - analysis, Water Pollutants, Chemical - analysis

Life Sciences, Receptors, Phyllosoma, Zoology, Spiny lobsters, Freshwater & Marine Ecology, Puerulus, Metamorphosis, Ecdysone, Gene expression, Analysis, Juvenile hormones, Proteins, Crustaceans

Aquaculture, Aquaculture industry, Bays, China, Environmental Monitoring, Estuaries, Geologic Sediments - analysis, Microplastics, Pets, Plastics - analysis, Pollutants, Pollution, Pollution level, Purification, Research institutes, Rivers, School construction, Sediments (Geology), Sewage, Sishili Bay, Surface sediments, Water Pollutants, Chemical - analysis...

Fish Diseases - parasitology, Life Cycle Stages, Spain, Animals, Trematode Infections - veterinary, Trematoda - growth & development, Trematoda - pathogenicity, Trematoda - physiology, Host-Parasite Interactions, Mediterranean Sea, Trematode Infections - parasitology, Brain - parasitology, Perciformes - parasitology

Biomarkers - metabolism, Species Specificity, Environmental Monitoring - methods, Seawater - chemistry, Water Pollutants, Chemical - analysis, Spain, Mining, Porphobilinogen Synthase - metabolism, Animals, Water Pollutants, Chemical - toxicity, Isotopes - analysis, Rivers - chemistry, Lead - analysis, Environmental Monitoring - statistics & numerical data, B...

Conservation of Natural Resources - methods, Environmental Monitoring, Oceans and Seas, Ecotoxicology - methods, Models, Chemical, Risk Assessment, Biodiversity, Environmental Restoration and Remediation - methods, Water Pollutants, Chemical - analysis, Spain, Water Pollution, Chemical - prevention & control, Geologic Sediments - analysis, Models, Biological

Commercial salts for human consumption, Environmental aspects, Environmental effects, Food, Global environmental pollutants, Human food safety and health, Microplastics, Pollutants, Pollution, Safety and security measures

Life Sciences, Hydrobiology, Zoology

Atmospheric Sciences, Conservation, Cultural heritage, Cultural property, Ecological service, Ecology, Environment, Environment, general, Environmental Engineering/Biotechnology, Environmental Management, Physical Geography, Protection and preservation, Review, Seagrass, Seagrasses, Sediment deposits, Social aspects

Analysis, Animals, Animals, Wild, Aquaculture, Brown mussels, Environmental Monitoring - methods, Fibers, Fish-culture, Food Contamination - analysis, Guanabara Bay, Marine biology, Marine debris, Mussels, Nylon, Perna - chemistry, Perna - growth & development, Perna perna, Plastics - analysis, Pollution, Polymethylmethacrylate, Seafood - analysis, Water Pol...

Bacteria, Cholera toxin, Escherichia coli, FTIR-ATR, Marine pollution, Microbial biofilm, Pathogenic bacteria, PCR, Plastisphere, Pollution, Wastewater

Animals, Atlantic cod, Atlantic salmon, Capelin, Eating, Fish as food, Fishes, Fishes - metabolism, Food Contamination - analysis, Gastrointestinal Contents - chemistry, Humans, Ingestion, Islands, Marine debris, Newfoundland and Labrador, Plastic, Plastics - analysis, Seafood - analysis, Water Pollutants, Chemical - analysis

Biogeography, Macaronesia, Water, Coasts, Océano Atlántico, Fish, Biomass, Cabo Verde, Ictiología, Zoología Marina, Atlántico Nordeste, Seamounts, Deep-water, Demersal, Depth zonation, Fish assemblages, Fauna Marina, Macaronesian, Macaronésie, Macaronésia

Acrylic resins, Extraction, FTIR imaging, Microplastic, Polyamides, Quantification, Sediments, Sediments (Geology), Wastewater

maxent

conservación de la biodiversidad, Política alimentaria, Q1 - Agricultura, Q18 - Política agraria, Bioeconomía, Q5 - Economía del medio ambiente, Q51 - Evaluación de los efectos en el medioambiente, Q57 - Economía ecológica : servicios del ecosistema, Q26 - Aspectos recreativos de los recursos naturales, conservación de la biodiversidad, Política alimentaria,...

cambio climático, Dióxido de carbono, Estudio y enseñanza

Colombia, International relations, LAW, POLITICAL SCIENCE, Europa, Relaciones internacionales, International Relations General, Relaciones, América Latina, Integración regional

R5 - Análisis regionales

cambio climático, Science, Technology, escenarios, simulación, Bogotá, reserva forestal, General Works

Climatology, Oceanography, marine, ASFA 2: Ocean Technology Policy & Non-Living Resources, ANE, Spain, Q2 09242:Observations and measurements at sea

Estudio y enseñanza

Cambios climaticos, Analisis, Oceanografia, Biologia marina, Diversidad biologica, Diversidad de especies