[UCSB] EEMB 2 - Midterm 1 Updated 2024/2025 with complete solutions

Age structure - Distribution of individuals across age categories Alfred Russel Wallace - Established biogeography Amenalism - One species is harmed, other is unaffected Antagonistic interactions - One species benefits, other is harmed (e.g., predation, herbivory, parasitism) Any environment is made up of its ________________ and ________________ components. - Biotic and abiotic Aposematism - 'Warning' coloration Are abiotic factors generally density-dependent or -independent? - Density-independent Are geographical barriers common in nature? - Yes Are most organisms highly mobile? - Yes Are most organisms very efficient? - No Are species in a community closely linked? - Yes Are there many good examples of clear predator-prey cycles in natural populations? - NoAt what temperatures are most organisms viable? - 0˚C - 45˚C Batesian mimicry - Benign species closely resembles a toxic one Biogeographic regions - Continent-scale areas with characteristic assemblages of species occupying many different biomes; separated by climatic, topographic, and/or aquatic barriers to dispersal of organisms, creating strikingly different biotas Biogeography - The scientific study of patterns of distribution of species, populations, and ecological communities Biological control - Use of natural environment to reduce population density of an economically damaging species Biomass - Dry weight (measure of carbon) Biome - An environment shaped by its climate and its geographic attributes, characterized by ecologically similar organisms; distribution based on climatic conditions Biotic potential - rN ; usually limited by environment