海洋の荒廃は人間の一生という時間の長さでも起こっています。魚の平均体長の縮小からも明らかです。われわれがそれでもなお自分たちの新しい基準を「ノーマル」だと呼ぶ姿を、ダニエル・ポーリーがミッションブルーのステージで示します。いつ私たちは基準を下げ続けるのを止めるのでしょうか。

人類の思い描く海の変遷

People often believe the natural world they inherit is how it has always been, overlooking dramatic losses over time. In one lagoon, fish shrank to half their former size in a generation, yet locals accepted this as normal. The phenomenon, called shifting baseline, means that as ecosystems degrade, expectations quietly move downward. Without preserving history or creating protected areas, society risks accepting only remnants of what once existed.

Each Generation Mistakes Decline for Normal in Our Oceans

*Five Easy Pieces*

Shifting Baselines: Daniel Pauly's TED Talk

Catch reconstructions reveal that global marine fisheries catches are higher than reported and declining

data

science

Mission Blue

fish

climate change

environment

ecology

animals

biodiversity

pollution

conservation

future

marine biology

ocean

TED Stage Talk

ダニエル・ポーリー: 人類の思い描く海の変遷