A Study of Intensity of Light and its Effects on the Microclimate of Primary and Secondary Forest La Selva Biological Station, Sarapiqui, Heredia, Costa Rica

Light Intensity and its Effects on the Topography at La Selva Biological Station
Secondary Forest Open Field Primary Forest
	50	20	10	0	-10	0	10	20	50
LUX – Lumens per meter square (sunlight)
730 hours	5700	4040	10930	15900	32600	32600	21000	2900	2800
1300 hours	11065	10570	25700	70000	105300	9300	3140	4920	10760
1710 hours	2240	2870	2080	12200	7580	2180	240	330	260

Soil Temperature ^oF
730 hours	78	78	78	78	82	78	74	74	76
1300 hours	79	81	82	82	82	78	74	74	74
1710 hours	76	76	76	76	78	76	75	74	74

Air Temperature ^oF
730 hours	80.2	78.2	78.4	78	79	80.2	79.7	78.9	80.1
1300 hours	82	82.7	81.3	80.8	83	79.5	80.2	79.4	79.6
1710 hours	78	78.7	78.7	77.1	77.4	77.6	77.3	79	78.7

Wind Speed m/s
730 hours	0	0	0	0	0.5	0.3	0	0	0
1300 hours	0	0	0	0.4	0.45	0.2	0	0	0
1710 hours	0	0	0	0	0	0	0	0	0

Relative Humidity
730 hours	87%	95%	98%	98%	97%	95%	95%	96%	95%
1300 hours	91%	90%	89%	90%	92%	89%	88%	88%	91%
1710 hours	96%	96%	92%	96%	97%	90%	90%	88%	86%

Heat Index ^oF
730 hours	86.6	84	87.4	86.7	84.6	90	89.5	88.2	86.2
1300 hours	91.8	95.6	92.2	92.9	92.4	86.5	88.4	86.1	88.1
1710 hours	84.5	85.9	82.2	82.5	85.7	84.3	85.1	85	85

Dew Point ^oF
730 hours	76	76.1	78	78.3	75.4	95.3	89.8	77.7	77.1
1300 hours	79.7	80.1	78.3	77.3	74.3	75.2	76.4	75	75.7
1710 hours	76.2	76	75.4	75.5	77.3	75.5	77.6	76.6	76