Black Wattle

acacia mearnsii

The Black Wattle (Acacia mearnsii) is a fast-growing leguminous tree native to southeastern Australia. Famed for its beautiful feathery foliage and fragrant pale yellow blooms, this resilient plant holds a dual reputation: it is both a highly valued commercial resource for tannin production and one of the world's most aggressive invasive species. It thrives in diverse climates, rapidly colonizing disturbed soils and altering ecosystems to its advantage. In its native habitats, it plays an important ecological role by stabilizing soils and providing habitat. However, when introduced abroad, its high reproductive rate, massive seed bank, and tolerance to fire allow it to easily displace native vegetation and deplete precious water resources.

生息地: Typically found in open woodlands, forest margins, riparian zones, grasslands, and disturbed areas like roadsides.

外見

The Black Wattle is a small to medium-sized evergreen tree, typically reaching heights between 5 and 15 meters. It features dark olive-green, bipinnate leaves that have a soft, feathery appearance due to hundreds of tiny, tightly packed leaflets. Its bark is smooth and greenish-black on younger branches, maturing into a rough, dark brown to blackish bark with deep fissures. During late winter and spring, it produces spectacular, dense clusters of globular, pale yellow or cream-colored flowers that emit a sweet scent, which later develop into flat, dark brown, jointed seed pods.

界Plantae門Tracheophyta綱Magnoliopsida目Fabales科Fabaceae属Acacia

Black Wattle

カテゴリ

植物

レア度

Common

危険度

1/5 · 非常に低い

スナップ

最初にスナップしよう！

おもしろい事実

A single mature tree can produce tens of thousands of seeds each year, which can remain viable and sleep in the soil for up to 50 years before germinating.

Its bark contains an incredibly high concentration of soluble tannins (up to 40%), making it one of the premier global sources for vegetable leather tanning.

The Black Wattle is listed by the IUCN as one of the world's 100 worst invasive alien species.

特殊能力

Formulates mutualistic bonds with Rhizobium bacteria in its roots to convert atmospheric nitrogen into usable soil nutrients, allowing it to colonize nutrient-poor soils.

Produces seeds with a tough outer coat that can lie dormant in the soil for decades, which are stimulated to germinate rapidly en masse following the heat of a wildfire.

Releases chemical compounds from its roots and decomposing leaf litter into the surrounding soil, inhibiting the germination and growth of competing native plant species.

サイズと詳細

長さ: 500-2000 cm
寿命: 10-30 年

食性と食事

As an autotrophic plant, the Black Wattle produces its own energy via photosynthesis, absorbing sunlight, water, carbon dioxide, and essential soil minerals.

主な食物

Sunlight
Carbon dioxide
Water
Soil nutrients

生態系とのつながり

mutualism

Rhizobium Bacteria

Rhizobium leguminosarum

Establishes a mutualistic relationship where the bacteria fix nitrogen in the tree's root nodules.

eaten by

Acacia Seed Weevil

Melanterius macrophylla

The larvae of this weevil feed directly on the developing seeds inside the pods, acting as a biological control agent.

eaten by

Pine Emperor Moth

Imbrasia cytherea

The large, colorful caterpillars of this moth feed heavily on the tree's foliage in areas where the tree is introduced.

特徴

このオブジェクトにはまだ特徴バッジが割り当てられていません。

別名

まだ別名はありません。

コレクション

テーマが追加されると、このオブジェクトのコレクションがここに表示されます。

安全性

危険度

1/5 · 非常に低い

まだ特別な安全上の注意はありません。

よくある質問

Black Wattleを見分けるには？

Black Wattleを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。

Black Wattleの長さは何ですか？

500-2000 cm

Black Wattleの寿命は何ですか？

10-30 年

Black Wattleは何を食べますか？

As an autotrophic plant, the Black Wattle produces its own energy via photosynthesis, absorbing sunlight, water, carbon dioxide, and essential soil minerals.

Black Wattleは通常どこに生息していますか？

Typically found in open woodlands, forest margins, riparian zones, grasslands, and disturbed areas like roadsides.