Coastal Arrowhead vs アオサギ

Sagittaria graminea compared with Ardea cinerea

Key Differences

Coastal Arrowhead is Not Evaluated while アオサギ is Least Concern.

Taxonomic Classification

Rank	Coastal Arrowhead	アオサギ
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Magnoliophyta (被子植物門)	Chordata (脊索動物)
Class	Liliopsida (単子葉植物綱)	Aves (鳥類)
Order	Alismatales (オモダカ目)	Pelecaniformes (ペリカン目)
Family	Alismataceae	Ardeidae
Genus	Sagittaria	Ardea
Species	Sagittaria graminea	Ardea cinerea

Conservation Status

Coastal Arrowhead

NE — Not Evaluated

アオサギ

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Coastal Arrowhead	アオサギ
Diet	—	Carnivore
Average Lifespan	—	15 years
Average Length	—	95 cm
Average Weight	—	1.5 kg

Habitat & Geographic Range

Coastal Arrowhead

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Asia (China, Japan), Europe (6 countries), and North America (United States).

アオサギ

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries).

Coastal Arrowhead

Sagittaria graminea, the coastal arrowhead or grass-leaved arrowhead, is an aquatic or semi-aquatic perennial herb in the family Alismataceae native to wetland habitats across a wide geographic range including eastern North America, parts of Asia including China and Japan, and isolated populations in Europe. The species inhabits shallow water margins, muddy shores, freshwater marshes, slow-moving streams, ditches, and pond edges, where it often forms dense emergent colonies. Sagittaria graminea is distinguished from other arrowheads by its narrow, grass-like submerged and emergent leaves that lack the pronounced arrowhead shape characteristic of the genus when leaves are fully emergent, though aerial leaves may have small basal lobes. The plant produces white three-petaled flowers arranged in whorls on tall flowering stems, with male flowers above and female flowers below. It is assessed as Not Evaluated by the IUCN. The tubers of arrowheads have historically been consumed as a starchy food by Indigenous peoples across North America. The species provides important habitat structure for aquatic invertebrates and waterfowl, and waterfowl consume the seeds and tubers. The name Sagittaria derives from the Latin for arrow, reflecting the classic arrowhead leaf shape seen in other species of the genus.

アオサギ

最大1メートルの高さに達する大型の優美な渉禽類であるアオサギは、ヨーロッパ、アジア、アフリカ全域の湿地、川、湖、沿岸地域に生息します。忍耐強い単独の狩猟者で、長時間静止した後、稲妻のような素早いダガーのような嘴の一撃で魚、カエル、小型哺乳類を捕らえます。サギのコロニーと呼ばれる集団繁殖地で高い木に群れを作って繁殖し、時に他のコロニー性水鳥と共生します。世界的に広く分布しており、軽度懸念種です。