Louis Calder Center
The Louis Calder Center is Fordham University's biological field station. The Calder Center is a protected forest preserve located north of New York City in Armonk, New York, and is the only full-time ecological research field station in the New York metropolitan area. History. The Louis Calder Center was founded in 1967 when paper magnate Louis Calder donated his estate to Fordham University. Buildings have since been constructed, renovated, and modernized. Buildings. The Louis Calder Center consists of 19 buildings including: Calder Lake. Calder Lake is a 4 hectare mesoeutrophic lake located within the Louis  Calder Center. The lake bottom is more than half covered by a submersed macrophyte community, including "Vallisneria americana, Elodea canadensis, Potamogeton amplifolius", and "Najas flexilis". Since Calder Lake is relatively small, the surrounding flora (including "Quercus rubra, Quercus prinus, Acer rubrum, Fagus grandifolia", and "Cornus florida") plays a significant role in its ecology, as falling leaves add nutrients to the water. The production rates of bacteria and larger phytoplankton in the lake are limited by the supply of inorganic phosphorus. Dissolved organic carbon exists between 4–6 mg C/L in the lake.