Marion Kelly’s chapter surveys the three principal technological advances that enabled a dramatic rise in food production in pre‑contact Hawai‘i: (a) massive walled brackish‑water fishponds that exploited a ‘herbivore link’ by cultivating herbivorous fish such as grey mullet and milkfish, thereby increasing protein conversion efficiency up to a factor of one hundred; (b) stone‑faced, terraced pondfields (lo‘i) with sophisticated ‘auwai’ irrigation that amplified wet‑land taro yields five‑ to fifteen‑fold compared with dry‑land gardens and also supported freshwater fish; and (c) systematic dry‑land cultivation organized into vegetation zones, especially on the Kona side of the islands. The chapter integrates archaeological measurements (wall lengths, terrace dimensions, ditch lengths), ethno‑historical eyewitness accounts (Vancouver, Menzies, missionaries), and genealogical dating of chiefs who commissioned the works. Two generational counting schemes (30‑year and 20‑year) place the construction of the largest fishponds and terraces between the mid‑15th and early‑17th centuries, a period of rapid population growth that required coordinated labor under powerful chiefs. The discussion evaluates the evidence for each technology’s contribution to intensification, notes the limited proof for dry‑land yield gains, and highlights the social dynamics that linked elite authority, commoner labor, and mythic attributions (e.g., menehune). The chapter concludes that while fishponds and terraced pondfields clearly boosted production, further radiocarbon dating is needed to refine chronologies, and the relationship between production intensification and the rise of great chiefs remains complex.
Topics
Herbivore‑Link Fishpond Engineering: Maximizing Aquatic Protein Yield
Explains how Hawaiian walled brackish‑water fishponds selected herbivorous fish (grey mullet, milkfish) that feed directly on minute algae, shortening the food chain and achieving ~100‑fold protein efficiency.
Stone‑Faced Terraced Lo‘i and ‘Auwai’ Irrigation: Wet‑Land Taro Intensification
Details the construction of stone‑faced terraces, sluice‑gate regulated ditches, and water‑flow management that raised taro yields up to 15× compared with dry‑land fields, and also supported freshwater fish cultivation.
Chief‑Led Labor Mobilization and Social Organization
Analyzes how high chiefs (e.g., Kiha‑a‑Pi‘ilani, Keawe‑a‑‘Umi) coordinated massive labor forces to build fishpond walls and terraces, reinforcing elite status and resource control.
Herbivore‑Link Fishpond Innovation: Harnessing Grey Mullet and Milkfish for Protein Efficiency
Explains how Hawaiian walled brackish‑water fishponds selected herbivorous fish that feed directly on minute algae, shortening the food chain and achieving a 100‑fold increase in protein conversion compared with natural ecosystems.
Stone‑Faced Terraced Pondfields (lo‘i) and ‘auwai’ Irrigation: Engineering Wetland Taro Production
Details the construction of stone‑faced terraces, irrigation ditches, sluice gates, and water‑flow controls that raised taro yields up to fifteen times dry‑land output and integrated fish cultivation within the pondfields.
Chronology of Hawaiian Walled Fishpond Construction: Chiefly Patronage and Generational Dating
Presents genealogical calculations (30‑year vs. 20‑year generation counts) linking major fishpond projects to specific high chiefs (e.g., Kiha‑a‑Pi‘ilani, Keawe‑a‑‘Umi) and situates construction between AD 1460–1620.
Archaeological Survey of Terraced Pondfields: Dimensions, Dams, and Irrigation Ditches
Summarizes field measurements of terrace wall heights (0.3‑2 m), widths (5‑15 m), total area (~4 ha), ditch lengths (up to 3 km), and associated stone dams, illustrating the scale of engineering effort.
Historical Eyewitness Accounts of Precontact Agriculture: Vancouver, Menzies, and Missionary Observations
Compiles 18th‑ and 19th‑century narratives describing the appearance, productivity, and management of fishponds and taro terraces, providing qualitative corroboration of archaeological data.