#biodiversity
- 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.
- 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.
- 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.