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- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_2e_(OpenStax)/08%3A_Unit_VIII-_Ecology/8.04%3A_Conservation_Biology_and_Biodiversity/8.4.02%3A_The_Biodiversity_CrisisScientists generally accept that the term biodiversity describes the number and kinds of species in a location or on the planet. Species can be difficult to define, but most biologists still feel comf...Scientists generally accept that the term biodiversity describes the number and kinds of species in a location or on the planet. Species can be difficult to define, but most biologists still feel comfortable with the concept and are able to identify and count eukaryotic species in most contexts. Biologists have also identified alternate measures of biodiversity, some of which are important for planning how to preserve biodiversity.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_2e_(OpenStax)/08%3A_Unit_VIII-_Ecology/8.04%3A_Conservation_Biology_and_BiodiversityConservation biology is the management of nature and of Earth's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of bi...Conservation biology is the management of nature and of Earth's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions. It is an interdisciplinary subject drawing on natural and social sciences, and the practice of natural resource management.
- https://bio.libretexts.org/Courses/Fresno_City_College/Introduction_to_Conservation_Biology/12%3A_Extinction/12.02%3A_History_of_ExtinctionExtinction is the global loss of a species. Five mass extinctions have occurred in geological history, and extinction rates were particular high during these events. Earth is currently experiencing a ...Extinction is the global loss of a species. Five mass extinctions have occurred in geological history, and extinction rates were particular high during these events. Earth is currently experiencing a sixth mass extinction, which is driven by human activities. When mass extinctions are not occurring, extinction still occurs at a low rate, the background extinction rate. The local elimination of a species (extirpation) is also of conservation concern.
- https://bio.libretexts.org/Courses/Gettysburg_College/02%3A_Principles_of_Ecology_-_Gettysburg_College_ES_211/05%3A_Biodiversity/5.01%3A_Definition_of_BiodiversityBiodiversity is a complex topic, covering many aspects of biological variation. In popular usage, the word biodiversity is often used to describe all the species living in a particular area. If we con...Biodiversity is a complex topic, covering many aspects of biological variation. In popular usage, the word biodiversity is often used to describe all the species living in a particular area. If we consider this area at its largest scale - the entire world - then biodiversity can be summarized as "life on earth." However, scientists use a broader definition of biodiversity, designed to include interactions with the abiotic aspects of their environment.
- https://bio.libretexts.org/Workbench/General_Ecology_Ecology/Chapter_22%3A_Biodiversity/22.1%3A_Introduction_to_BiodiversityBiodiversity is a broad term for biological variety, and it can be measured at a number of organizational levels. Traditionally, ecologists have measured biodiversity by taking into account both the n...Biodiversity is a broad term for biological variety, and it can be measured at a number of organizational levels. Traditionally, ecologists have measured biodiversity by taking into account both the number of species and the number of individuals of each species. However, biologists are using different measures of biodiversity, including genetic diversity, to help focus efforts to preserve the biologically and technologically important elements of biodiversity.
- https://bio.libretexts.org/Courses/Citrus_College/Citrus_College_General_Biology_Textbook/15%3A_Population_and_Community_Ecology/15.05%3A_Community_EcologyCommunities include all the different species living in a given area. The variety of these species is referred to as biodiversity. Many organisms have developed defenses against predation and herbivor...Communities include all the different species living in a given area. The variety of these species is referred to as biodiversity. Many organisms have developed defenses against predation and herbivory, including mechanical defenses, warning coloration, and mimicry. Two species cannot exist indefinitely in the same habitat competing directly for the same resources. Species may form symbiotic relationships such as commensalism, mutualism, or parasitism. Community structure is described by its fou
- https://bio.libretexts.org/Workbench/General_Biology_I_and_II/06%3A_Unit_VI-_Ecology/6.2%3A_Biodiversity_and_HIPPPOC/6.2.1%3A_Introduction_to_BiodiversityBiodiversity is a broad term for biological variety, and it can be measured at a number of organizational levels. Traditionally, ecologists have measured biodiversity by taking into account both the n...Biodiversity is a broad term for biological variety, and it can be measured at a number of organizational levels. Traditionally, ecologists have measured biodiversity by taking into account both the number of species and the number of individuals of each species. However, biologists are using different measures of biodiversity, including genetic diversity, to help focus efforts to preserve the biologically and technologically important elements of biodiversity.
- https://bio.libretexts.org/Workbench/General_Ecology_Ecology/Chapter_14%3A_Introduction_to_Community_EcologyFigure 9: Foundational species increase food web complexity by facilitating species higher in the food chain. (A) Seven ecosystems with foundation species were sampled: coastal (seagrass, blue mussel,...Figure 9: Foundational species increase food web complexity by facilitating species higher in the food chain. (A) Seven ecosystems with foundation species were sampled: coastal (seagrass, blue mussel, cordgrass), freshwater (watermilfoil, water-starwort) and terrestrial (Spanish moss, marram grass). (B) Food webs were constructed for both bare and foundation species-dominated replicate areas. (C) From each foundation species structured-food web, nodes (species) were randomly removed until the s…
- https://bio.libretexts.org/Courses/Prince_Georges_Community_College/PGCC_Microbiology/01%3A_Introduction_to_Microbiology/1.03%3A_Classification_Phylogeny_and_NomenclatureThe collage above shows a single species in each of the six kingdoms into which all of Earth's living things are commonly classified.
- https://bio.libretexts.org/Courses/Gettysburg_College/01%3A_Ecology_for_All/23%3A_Conservation_Biology/23.02%3A__Biodiversity_Loss_over_timeThe biologists studying cichlids in the 1980s discovered hundreds of cichlid species representing a variety of specializations to particular habitat types and specific feeding strategies: eating plank...The biologists studying cichlids in the 1980s discovered hundreds of cichlid species representing a variety of specializations to particular habitat types and specific feeding strategies: eating plankton floating in the water, scraping and then eating algae from rocks, eating insect larvae from the bottom, and eating the eggs of other species of cichlid.
- https://bio.libretexts.org/Courses/Canada_College/Human_Biology_Biol_011_Textbook/02%3A_Introduction_to_Human_Biology/2.03%3A_Diversity_of_LifeThe collage above shows a single species in each of the six kingdoms into which all of Earth's living things are commonly classified.
