#diversity

• Aquatic fauna — The totality of vertebrate and invertebrate animal species structurally adapted to live permanently or temporarily in aquatic environments (fresh, brackish, or marine waters). This ecological concept encompasses a diverse range from protozoa and crustaceans to fish, amphibians, and marine mammals, representing a fundamental indicator for assessing biotope quality and the health status of global hydrographic ecosystems.
• Agrobiocenosis — A biotic community within an agricultural ecosystem (agroecosystem), created and partially controlled by humans, consisting of cultivated crops, weeds, beneficial or pest insects, soil microorganisms, and associated animals. Unlike a natural biocenosis, it exhibits low structural stability, limited genetic diversity, and requires constant external energy inputs.
• Agroecological — Pertaining to agroecology; relating to the ecological interactions between crops, livestock, soil, and the environment within agricultural systems. The term describes practices, methods, or environmental conditions that promote sustainable food production, biodiversity conservation, reduced use of synthetic chemicals, and the protection of natural resources.
• Agroecosystem — An ecosystem intentionally modified, shaped, and controlled by humans through agricultural activities for the purpose of obtaining plant or animal biomass. It integrates local biotic components with technological and anthropic elements, being characterized by a partially directed energy flow, open nutrient cycles, and a structural stability dependent on external energy and economic inputs.
• Allelism — The state, property, or biological phenomenon whereby a gene possesses multiple alternative forms or mutant variants (alleles) occupying the same locus on homologous chromosomes. Structurally, this concept underscores genetic diversity within a population, analyzed in Mendelian inheritance studies to explain the functional interactions between phenotypic traits transmitted to offspring.
• Allelomorphism — The state, quality, or biological phenomenon whereby a gene presents itself in the form of multiple alternative variants (allelomorphs or alleles) capable of occupying the same chromosomal locus. This structural concept underscores genetic variability within populations, explaining how paired genes interact to produce phenotypic diversity.
• Allelomorphism — The state, property, or biological phenomenon whereby a single gene possesses multiple alternative forms or molecular variants (alleles) capable of occupying the same chromosomal locus. In population genetics, this structural mechanism represents the central pillar of gene polymorphism, determining the complex ways in which paired genes interact through dominance, recessiveness, or codominance to generate the diversity of hereditary traits.
• Allophilia — A positive psychological attitude, sympathy, admiration, or open preference toward a group of people outside one's own community (outgroup), characterized by different cultural, ethnic, religious, or social traits. This concept is the direct opposite of xenophobia and prejudice, manifesting as an active desire for interaction, cooperation, and appreciation of human diversity.
• Allogamous — Relating to plants, flowers, or vegetal species: reproducing via cross-pollination, a biological phenomenon where fertilization is achieved using pollen from another flower belonging to either the same individual or a different individual of the same species. This complex genetic mechanism prevents inbreeding, promotes hereditary variability, and enhances the descendants' adaptability to environmental shifts.
• Alloglottic — Relating to persons, communities, or population groups: speaking a language other than the official or majority language of the state or region in which they reside; a foreign-speaking person integrated into a linguistic environment different from their native one. In demographic studies, the term describes linguistic minorities that preserve their mother tongue alongside the use of the dominant administrative language.
• Alona coelestis — The scientific Latin designation attributed to a specific insect species (belonging to the order Lepidoptera or coleopterans depending on recent taxonomic revisions) or used as a valid name or historical synonym in the classification of microscopic cladoceran crustaceans. This structural taxon describes specimens characterized by distinct morphological traits adapted to specific micro-habitats, studied within planetary biodiversity inventories.
• Allopatric — Relating to related species, populations, or organisms: occupying completely different geographic ranges, isolated or separated by natural physical barriers (mountains, rivers, deserts) that prevent gene flow and direct interbreeding. In evolutionary biology, allopatric isolation represents the primary structural mechanism triggering speciation, leading to the accumulation of independent genetic mutations in the separated populations.
• Androdioecy — The state, condition, or biological phenomenon in which a plant population contains both exclusively male individuals and hermaphroditic individuals; sometimes used synonymously with 'androdioecy'. This structural reproductive strategy directly influences pollination dynamics.
• Anti-clonal — Opposing or preventing the formation of clones, or acting against monoclonal proliferation; a biochemical medium, substance, or ecological factor that limits the uniform multiplication of a single genetically identical organism, cellular fragment, or plant strain. In horticulture, it indicates processes that stimulate genetic variability to the detriment of uniformity through cloning.
• Avifauna — The totality of bird species inhabiting a specific geographical area, region, country, or ecosystem during a particular period of time. It represents a fundamental component of global biodiversity, intensively studied in ecology and ornithology to evaluate environmental health, migration dynamics, and the impact of climate change on natural habitats.