ZB_5_05 — Extinction Biology and De-Extinction

Extinction — the complete disappearance of a species — is a permanent event that has shaped life's history as profoundly as origination. Background extinction (the normal, continuous loss of species) proceeds at ~0.1–1 s

ZB_5_06 — Mass Extinction Ecology: Catastrophe, Recovery, and Evolutionary Reset

Mass extinctions — episodes in which >75% of species disappear within a geologically brief interval — have profoundly shaped the history of life on Earth, acting as ecological and evolutionary resets that eliminate domin

ZB_5_10 — Disturbance Ecology: Fire, Flood, and Forest Dynamics

Disturbance ecology investigates how natural and anthropogenic perturbations — fire, wind, flood, drought, volcanic eruption, logging, grazing, landslides, and insect outbreaks — influence ecosystem structure, species di

ZB_5_12 — Wildlife Disease Ecology: Pathogens in Wild Populations

Wildlife disease ecology examines how infectious diseases (caused by viruses, bacteria, fungi, protists, and metazoan parasites) operate within wild animal and plant populations, investigating transmission dynamics, host

ZB_0_00 — Ecology & Organismal Biology: Section Summary

ZB_4_16 — Mangrove Ecosystems

Mangroves are a group of approximately 70 species of salt-tolerant trees and shrubs that occupy the intertidal zone of tropical and subtropical coastlines worldwide, forming dense tidal forests that rank among the most p

ZB_4_10 — Cave Ecology: Life in Perpetual Darkness

Cave ecology (speleobiology) investigates life in subterranean environments — caves, groundwater aquifers, lava tubes, and interstitial spaces — habitats characterized by permanent darkness, near-constant temperature, hi

ZB_4_11 — Island Ecology: Biogeography, Endemism, and Evolutionary Radiation

Island ecology — centered on the theory of island biogeography developed by Robert MacArthur and Edward O. Wilson (1963, 1967) — provides one of ecology's most influential theoretical frameworks, explaining how species d

ZB_4_08 — Rewilding and Ecological Restoration

Rewilding is an emerging approach to conservation that aims to restore self-sustaining, self-regulating ecosystems by reintroducing missing species — particularly large vertebrates and ecological engineers — and allowing

ZB_4_09 — Canopy Ecology: Life in the Forest Roof

The forest canopy — the aggregate of tree crowns forming the uppermost vegetative layer of a forest — is among the most species-rich, least explored, and most ecologically dynamic habitats on Earth, harboring an estimate

ZB_4_00 — Biome Landscape Ecology: Subfolder Summary

ZB_4_06 — Alpine and Arctic Ecology: Life at the Extremes

Alpine and Arctic ecosystems — the treeless biomes occurring above the climatic treeline in mountains (alpine) and above ~60–70°N latitude where mean temperature of the warmest month is <10°C (arctic) — share fundamental

ZB_4_05 — Urban Ecology: Nature in the City

Urban ecology studies the distribution, abundance, and interactions of organisms within cities and urbanized landscapes — environments that now house over 56% of humanity (projected ~68% by 2050) and cover ~3% of Earth's

ZB_4_12 — Landscape Ecology: Patches, Corridors, and Mosaics

Landscape ecology studies how spatial patterns of ecosystems — the arrangement, size, shape, and connectivity of habitat patches within a heterogeneous landscape mosaic — influence ecological processes including species

ZB_4_13 — Historical Ecology: Human-Ecosystem Co-Evolution through Time

Historical ecology investigates how human land use, management, domestication, exploitation, and settlement over centuries to millennia have shaped contemporary ecosystems, landscapes, and biodiversity patterns — reveali

ZB_3_22 — Old-Growth Forests & Ancient Woodland Ecology

Old-growth forests — variously defined as primary forests that have developed over centuries without major anthropogenic disturbance — represent the most structurally complex and biologically diverse terrestrial ecosyste

ZB_3_14 — Kelp Forests and Seagrass Meadows: Underwater Gardens of Productivity

Kelp forests and seagrass meadows are the two major groups of marine macrophyte-dominated ecosystems — structurally complex, highly productive underwater habitats that provide essential services including nursery habitat

ZB_3_23 — Coral Reef Ecosystem Dynamics

Coral reefs are among Earth's most biodiverse and economically valuable ecosystems, occupying less than 0.1% of the ocean floor yet supporting approximately 25% of all marine species (~830,000 species). Built over millen

ZB_3_07 — Keystone Species and Trophic Cascades

A keystone species exerts an ecological influence disproportionate to its abundance — its removal causes cascading structural changes through the ecosystem. The concept was introduced by Robert Paine (1966, 1969) based o

ZB_3_00 — Ecosystem Ecology: Subfolder Summary