mid Atlantic and Northeast

mid Atlantic and Northeast

Northeastern sites are cool and moist. They can develop growing season deficits. On average, they maintain a moisture surplus in all months.  The HARV NEON site is part of this study.  In addition, we have long-term data from HARV and BART, begun as the part of a previous Macrosystems grant from the National Science Foundation.  Mike Dietze’s lab is sampling BART.  Western Quebec sites come from the study by Messaoud, Bergeron, and Asselin.

Monthly precipitation and potential evapotranspiration at a mid-Atlantic site since 1950.


Mid-Atlantic sites have substantially warmer winters and develop moisture deficits most years.  The SERC NEON site is part of our analysis.  We also include Bill McShea’s study from SCBI.  We did not install new seed traps at the NEON SCBI site due to concerns over bear damage.

Sites assimilated thus far include:

Smithsonian Environmental Research Center (NEON SERC)

Smithsonian Conservation Biology Institute (SCBI)

Harvard Forest (HARV and NEON HARV)

Bartlett Experimental Forest (BART)

Western Quebec (MASK, COCH, LDUPT, LMONT)


Sites in the Northeast are BART, COCH, HARV, LDUPT, LMONT, MASK. “fruit” includes any reproductive structure bearing multiple seeds, including cones.
Tree-years Seeds
Abies balsamea 708 11
Acer pensylvanicum 203 4
Acer rubrum 4626 3598
Acer saccharum 1397 288
Betula alleghaniensis 615 2390
Betula lenta 882 1109
Betula papyrifera 263 5034
Betula UNKN 0 87
Carya ovalis-glabra 3 0
Fagus grandifolia 3154 69
Fraxinus americana 515 196
Fraxinus pennsylvanicum 0 11
Ostrya virginiana 60 0
Picea mariana 44 0
Picea rubens 740 309
Pinus resinosa 10 0
Pinus strobus 1393 324
pinuStro_fruit 0 1
Populus grandidentata 79 0
Prunus serotina 54 7
Quercus alba 27 1
Quercus rubra 1439 243
Quercus UNKN 0 9
Quercus velutina 228 98
Tsuga canadensis 1559 2153
tsugCana_fruit 0 142