Concentric Boulder Lichen vs giraffe

Porpidia crustulata compared with Giraffa camelopardalis

Taxonomic Classification

Rank	Concentric Boulder Lichen	giraffe
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (cordados)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (mamíferos)
Order	Lecideales (Lecideales)	Artiodactyla (Artiodátilos)
Family	Lecideaceae	Giraffidae (Giraffes)
Genus	Porpidia	Giraffa (Giraffes)
Species	Porpidia crustulata	Giraffa camelopardalis

Conservation Status

Concentric Boulder Lichen

VU — Vulnerable

giraffe

VU — Vulnerable

Population: ~117.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Concentric Boulder Lichen	giraffe
Diet	—	Herbivore
Average Lifespan	—	25 years
Average Length	—	5.5 m
Average Weight	—	1.2 t

Habitat & Geographic Range

Concentric Boulder Lichen

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

giraffe

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 5 distinct biome types within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Ecuador. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Concentric Boulder Lichen

<em>Porpidia crustulata</em>, commonly known as the Concentric Boulder Lichen, is a crustose lichen in the family Porpidiaceae formed through a symbiotic relationship between a fungal partner (mycobiont) and photosynthetic green algae (photobiont). Like all crustose lichens, it grows tightly appressed to its substrate—typically siliceous or acidic rock surfaces including boulders, cliff faces, and pebbles in open, well-lit habitats—forming thin, grayish to pale thalli marked by scattered black apothecia (reproductive discs). <em>Porpidia crustulata</em> derives nutrition entirely through photosynthesis conducted by its algal partner, requiring no external organic food source. The species has been documented in Denmark, Norway, Portugal, Sweden, and the United States, suggesting a broad boreal to temperate distribution across the Northern Hemisphere. It is currently classified as Vulnerable by the IUCN, indicating significant conservation concern, likely linked to threats including air pollution, acidification, quarrying of rocky habitats, and changes in land use that reduce the availability of suitable substrates. Crustose lichens are typically slow-growing, long-lived organisms with limited capacity for rapid range shifts in response to environmental change. Biological traits such as individual lifespan, growth rates, and reproductive output remain poorly documented at the population level.

giraffe

A girafa (Giraffa camelopardalis) é o animal terrestre mais alto da Terra, podendo atingir 5,5 metros de altura e pesar até 1.750 kg. Seu pescoço alongado, contendo as mesmas sete vértebras cervicais de todos os mamíferos, evoluiu para se alimentar de acácias nas savanas e bosques africanos. Animal social que vive em manadas soltas sem vínculos permanentes, comunica-se por infrassons e linguagem corporal. Vulnerável, com populações em declínio devido à perda de habitat e à caça ilegal.