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ロングアイランド・サウンドの"アンモニア・コンフェルティテスタ" (Ammonia confertitesta)
Eleanor J Goetz1, Pincelli M Hull1,2, Johan Varekamp3
1Department of Earth and Planetary Sciences, Yale University, 210 Whitney Ave., New Haven, CT 06511, USA.
Science advances
|September 3, 2025
まとめ
汚染された河口では 侵入のタイミングを判断するのは困難です フォラミニフェラの化石は,19世紀半ばにロングアイランド・サウンドに侵入したが,1970年代には船の移動が増加したため増殖した.
科学分野:
- エコロジー
- 古生物学
- 海洋生物学
背景:
- 河口の生態系は,人間の干渉による非原生種の侵入のタイミングを決定する上で課題に直面しています.
- 多くの侵入性海洋生物は 植え付け後に特定され 導入の詳細や成功要因が 隠されています
研究 の 目的:
- ロング・アイランド・サウンドでのアモニア・コンフェルティテスタの侵入のタイミングと確立の歴史を,フォラミニフェラ記録を用いて記録する.
- この侵入生物の拡散の 潜在的要因を調査する
主な方法:
- 過去の生態系構造と種の分布を再構築するために,コアサンプルから化石化したフォラミニフェラ殻を使用しました.
- フォラミニフェラの記録を分析し,時間の経過とともに *アンモニアコンフェルティテスタ* の豊富さを追跡した.
主要な成果:
- 19世紀半ばからロングアイランド・サウンドに存在していたが稀な*アンモニア・コンフェルティテスタ*.
- "アンモニアコンフェルティテスタ"は,1970年代半ばから顕著に拡散した.
結論:
- *アンモニアコンフェルティテスタ*の拡散は,世界の船舶とバラスト水によるプロパグル圧の増加と関連していると考えられています.
- フォラミニフェラの化石記録は,河口環境における侵入生物の歴史的生態学を理解するための貴重なツールです.
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