div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=formal-theory-of-ecosystemshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Formal theory of ecosystems loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader036vdocumentsusreader036viewer2022080321575068601a28ab0f07afe0d7html5thumbnails1jpg width=140 height=200 divp© 1979 Nature Publishing Grouppdiv