Fish assemblages in Neotropical reservoirs: Colonization ...
Extending the record of fish regime change using fish assemblages from Peruvian archaeological sites...
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Extending the record of fish regime change using fish assemblages from Peruvian archaeological sites Dan Sandweiss University of Maine November 2003
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Transcript of Extending the record of fish regime change using fish assemblages from Peruvian archaeological sites...
Extending the record of fish regime change using fish
assemblages from Peruvian archaeological sites
Dan Sandweiss
University of Maine
November 2003
From Anchovies to Sardines and Back:Multidecadal Change in the Pacific Ocean
Francisco P. Chavez, John Ryan, Salvador E. Lluch-Cota,Miguel Ñiquen C.
Science 299, 217 (2003)
From the Abstract:“In the Pacific Ocean, air and ocean temperatures, atmosphericcarbon dioxide, landings of anchovies and sardines, and theproductivity of coastal and open ocean ecosystems have variedover periods of about 50 years. In the mid-1970s, the Pacific changed from a cool ‘anchovy regime’ to a warm ‘sardine regime.’ A shift back to an anchovy regime occurred in the middle to late 1990s.”
Lo DemásInka Periodfishing site 200 kmsouth of Lima, PeruOccupied ca. 1480-1540 A.D.
The Inka EmpireBegan ca. 1440 A.D.Conquered Chincha ca. 1479 A.D.Fell to Spaniards 1532 A.D.
(Lo Demás)
Machu Picchu
1400 1500 1600 1700 1800 1900 2000 2100
cal AD
1480 1540
1 sigma calibrated range
Sector IV
Sector I
Lo Demás: Sector IChronological data
Lo Demás Airphoto1942
Courtesy:Servicio Aerofotográfico
Nacional del Perú
El CumbeCemeteryB
Photoview
Lo Demás Sector I
