ハクトウワシ vs

Haliaeetus leucocephalus compared with Chroomonas nordstedtii

Taxonomic Classification

Rank	ハクトウワシ
Kingdom	Animalia (動物)	Chromista (クロミスタ)
Phylum	Chordata (脊索動物)	Cryptophyta
Class	Aves (鳥類)	Cryptophyceae (クリプト藻綱)
Order	Accipitriformes (タカ目)	Pyrenomonadales (ピレノモナス目)
Family	Accipitridae (Hawks & Eagles)	Chroomonadaceae
Genus	Haliaeetus (Sea Eagles)	Chroomonas
Species	Haliaeetus leucocephalus	Chroomonas nordstedtii

Conservation Status

ハクトウワシ

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

NE — Not Evaluated

Physical Characteristics

Attribute	ハクトウワシ
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

ハクトウワシ

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 10 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (8 countries), North America (United States), and South America (Ecuador).

Habitat

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

Range

Distributed across Brazil, Norway, and Sweden.

ハクトウワシ

アメリカの国鳥であり保全の成功を象徴するハクトウワシは翼開長が最大2.4 mに達し、北米全域の水辺近くの森林や湿地に生息する。強力な空中捕食者兼腐肉食者で魚を主食とするが、水鳥や腐肉も捕食する。DDT汚染と狩猟によって1960年代にほぼ絶滅に瀕したが、農薬の使用禁止と絶滅危惧種法の施行により劇的に回復した。

Chroomonas nordstedtii is a species of cryptophyte alga in the family Chroomonadaceae, named after the Swedish botanist Carl Fredrik Otto Nordstedt, a prominent phycologist of the nineteenth century who made significant contributions to the study of freshwater algae and desmids. Cryptophytes in the genus Chroomonas are small, biflagellate unicells widely distributed in freshwater and brackish environments globally, contributing to planktonic diversity and primary production. They are distinguished from other flagellate algae by their unique cryptophyte plastid, nucleomorph, and ejectosomes — proteinaceous coiled structures unique to the group. Chroomonas nordstedtii has been documented from European freshwater habitats, including Scandinavian localities that were well studied by Nordic phycologists in the classical period of algal taxonomy. The species is part of the diverse microalgal flora of boreal and temperate freshwater ecosystems. Cryptophytes contribute to planktonic food webs as prey for heterotrophic protists and small metazoans, and as high-quality dietary components in zooplankton feeding experiments. The species has not been assessed under IUCN criteria.