Coastal Ragweed vs Gharial

Ambrosia hispida compared with Gavialis gangeticus

Key Differences

Coastal Ragweed is Least Concern while Gharial is Critically Endangered.

Taxonomic Classification

Rank	Coastal Ragweed	Gharial
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Reptilia (Reptiles)
Order	Asterales (Daisies & Sunflowers)	Crocodylia (Crocodilians)
Family	Asteraceae (Daisy Family)	Crocodylidae (Crocodiles)
Genus	Ambrosia	Crocodylus (True Crocodiles)
Species	Ambrosia hispida	Gavialis gangeticus

Conservation Status

Coastal Ragweed

LC — Least Concern

Gharial

CR — Critically Endangered

Population: ~650

Trend: Increasing ↑

Physical Characteristics

Attribute	Coastal Ragweed	Gharial
Diet	—	Carnivore
Average Lifespan	—	60 years
Average Length	—	5.0 m
Average Weight	—	200.0 kg

Habitat & Geographic Range

Coastal Ragweed

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found in Cuba.

Gharial

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical coniferous forests, and temperate broadleaf and mixed forests, among 6 distinct biome types spanning the Indomalayan and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across India and Nepal. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Coastal Ragweed

Coastal ragweed (Ambrosia hispida) is a perennial herb in the family Asteraceae, native to the coastal dunes, sandy beaches, and cays of Cuba, the Bahamas, and the wider Caribbean region. It grows in pioneer beach and dune vegetation, often forming spreading colonies that help stabilise loose coastal sands. Like other members of the genus Ambrosia, it bears inconspicuous greenish-white flowers arranged in racemes; male flower heads produce wind-dispersed pollen that can trigger allergic rhinitis in sensitive individuals. The deeply lobed, hispid leaves are adapted to reflect intense solar radiation and tolerate salt spray. Coastal ragweed plays an ecological role in early dune succession, binding sand and enabling other plant species to establish. The genus is widespread globally, with several Ambrosia species considered noxious weeds in agricultural settings, though Ambrosia hispida is restricted to its native Caribbean coastal range. The IUCN assesses it as Least Concern, reflecting adequate population size across its Caribbean coastal distribution. Pressure from coastal development and tourism infrastructure poses a localised threat to dune communities it inhabits.