A DATA SET is a series of observations collected by the same methodology. Each data set should have documentation sufficient for someone unfamiliar with the research to replicate the study. Data sets may be broken into subsets (data files) that are discrete in space and time, in that order. The documentation for a data set should include all spatial and temporal subdivisions of the data.

(Data, Abstract, Methods, Variables)

NOTES:

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DATA SET IDENTIFIER: Temperature and humidity in the LFDP (40 points)

PROJECT TITLE: Luquillo Forest Dynamics Plot (LFDP) (Spatial distribution of organisms on the LFDP)

PROJECT DESCRIPTION: The processes that determine the plant species diversity and structure of tropical forest are still uncertain despite many years of investigation. A tropical forest characteristically has few common species and many rare species, with conspecifics often widely distributed throughout the forest. The potential for inter and intra-specific interactions are numerous, and it is difficult to determine which factors maintain species diversity or how rare species survive in the population. Factors that we believe contribute to tropical forest structure and composition include the physical environment and past history of the forest, species-specific physiological requirements for light, nutrients and water necessary for growth, survival and reproduction, and pathogens and herbivores. Despite the substantial amount of information available about these factors, we are still unable to accurately model the current composition of tropical forest or to predict its future response to human and natural disturbances.

 The Luquillo Forest Dynamics Plot (LFDP), previously known as the Hurricane Recovery Plot (Zimmerman et. al. 1994) and the Luquillo long-term ecological research grid (Soil Survey 1995), is a 16-ha forest plot (SW corner 18° 20' N, 65° 49' W) located near El Verde Field Station. The plot is 500 m N-S and 320 m E-W and is divided into 400 20 x 20 m quadrats, with each quadrat sub divided into 16 5 x 5 m sub-quadrats. The field station and LFDP are in the Luquillo Mountains of northeastern Puerto Rico, approximately 35 km southeast of San Juan. Information from the LFDP contributes to the efforts of the Center for Tropical Forest Science (CTFS, Smithsonian) network of large tropical forest plots in order to improve our understanding of tropical forest and to predict its future. Large plots (typically 50 ha) are required to cover local environmental variation, include sufficient numbers of individuals of both the common and rare species, and to determine plant spatial relationships. Population monitoring is required over many years to elucidate tree life histories, species interactions and population changes in order to determine the forest response to environmental changes and disturbance.

 The LFDP is unique among the CTFS sites as it has a history of land use disturbance and also hurricane damage. These two disturbance types interact and influence the community dynamics and species composition in the LFDP. The Northern area (approximately two thirds of the plot) was disturbed by tree felling and farming until 1934 when the land was purchased by United States Department of Agriculture, Forest Service. The Southern third was not farmed and only suffered relatively light disturbance from selective logging. Aerial photographs taken in 1936 show differences in canopy cover caused by the patterns of land use history. Clear patterns in the distribution of some species reflect this land use history (Thompson et. al. in press). The distribution of species as a result of the land use history interacts with hurricane disturbance, as those species colonizing the northern part of the LFDP are more susceptible to hurricane damage (Zimmerman et. al. 1994). Major hurricanes struck the forest area of the LFDP in 1928 and 1932 and after a 66 year period with relatively little hurricane damage, the forest was struck by Hurricane Hugo in 1989 and Hurricane Georges in 1998, both hurricanes causing significant damage.

Monitoring of long-term dynamics of animal and plant populations and associated abiotic variables at 40 points on the LFDP

LTER CORE AREAS: (Annotate all that apply)

LEF LTER 1 RESEARCH TOPIC: (Annotate all that apply)

We define a data file as a component of a data set. A data set can have only one data file or more. Basically, different data files have different data structures or format.
DATA SET FILES (SUBSETS):

Data File No.	Data File Identifier	On-Line Filename 1	On-Line Filename 2	Starting Date	Periodicity of sample	End Date
1	LFDP grid point 0903 data starting on June 2002	09030602.txt	09030602.dtf	June 2002	every half hour	01/01/03
2	LFDP grid point 0906 data starting on February 2000	09060200.txt	09060200.dtf	February 2000	every half hour	06/01/00
3	LFDP grid point 0903 data starting on May 2000	09030500.txt	09030500.dtf	May 2000	every half hour	01/01/01
4	LFDP grid point 0315 data starting on February 2001	03150201.txt	03150201.dtf	February 2001	every half hour	06/01/01
5	LFDP grid point 0906 data starting on February 2001	09060201.txt	09060201.dtf	February 2001	every half hour	06/01/01
6	LFDP grid point 1512 data starting on February 2002	15120202.txt	15120202.dtf	February 2002	every half hour	06/01/02
7	LFDP grid point 1515 data starting on February 2000	15150200.txt	15150200.dtf	February 2000	every half hour	06/01/00
8	LFDP grid point 0906 data starting on May 2000	09060500.txt	09060500.dtf	May 2000	every half hour	01/01/01
9	LFDP grid point 0903 data starting on February 2002	09030202.txt	09030202.dtf	February 2002	every half hour	06/01/02
10	LFDP grid point 0303 data starting on May 2001	0303m501.txt	0303m501.dtf	May 2001	every half hour	01/01/02
11	LFDP grid point 1218 data starting on February 2000	12180200.txt	12180200.dtf	February 2000	every half hour	06/01/00
12	LFDP grid point 0303 data starting on June 2002	0303l0602.txt	0303l0602.dtf	June 2002	every half hour	01/01/03
13	LFDP grid point 0306 data starting on January 2002	03060102.txt	03060102.dtf	January 2002	every half hour	06/01/02
14	LFDP grid point 0306 data starting on February 2001	03060201.txt	03060201.dtf	February 2001	every half hour	06/01/01
15	LFDP grid point 0306 data starting on May 2000	03060500.txt	03060500.dtf	May 2000	every half hour	01/01/01
16	LFDP grid point 0306 data starting on May 2001	03060501.txt	03060501.dtf	May 2001	every half hour	01/01/02
17	LFDP grid point 0303 data starting on May 2000	0303m500.txt	0303m500.dtf	May 2000	every half hour	01/01/01
18	LFDP grid point 0303 data starting on February 2001	0303m201.txt	0303m201.dtf	February 2001	every half hour	06/01/02
19	LFDP grid point 0903 data starting on May 2001	09030501.txt	09030501.dtf	May 2001	every half hour	01/01/02
20	LFDP grid point 0306 data starting on February 2000	03060200.txt	03060200.dtf	February 2000	every half hour	06/01/00
21	LFDP grid point 0309 data starting on May 2000	03090500.txt	03090500.dtf	May 2000	every half hour	01/01/01
22	LFDP grid point 0309 data starting on May 2001	03090501.txt	03090501.dtf	May 2001	every half hour	01/01/02
23	LFDP grid point 0309 data starting on June 2002	03090602.txt	03090602.dtf	June 2002	every half hour	01/01/03
24	LFDP grid point 0312 data starting on January 2002	03120102.txt	03120102.dtf	January 2002	every half hour	06/01/02
25	LFDP grid point 0312 data starting on February 2000	03120200.txt	03120200.dtf	February 2000	every half hour	06/01/00
26	LFDP grid point 0312 data starting on February 2001	03120201.txt	03120201.dtf	February 2001	every half hour	06/01/01
27	LFDP grid point 0306 data starting on June 2002	03060602.txt	03060602.dtf	June 2002	every half hour	01/01/03
28	LFDP grid point 0312 data starting on May 2000	03120500.txt	03120500.dtf	May 2000	every half hour	01/01/01
29	LFDP grid point 0312 data starting on May 2001	03120501.txt	03120501.dtf	May 2001	every half hour	01/01/02
30	LFDP grid point 0309 data starting on January 2002	03090102.txt	03090102.dtf	January 2002	every half hour	06/01/02
31	LFDP grid point 0309 data starting on February 2000	03090200.txt	03090200.dtf	February 2000	every half hour	06/01/00
32	LFDP grid point 0303 data starting on May 2001	03030501.txt	03030501.dtf	May 2001	every half hour	01/01/02
33	LFDP grid point 0309 data starting on February 2001	03090201.txt	03090201.dtf	February 2001	every half hour	06/01/01
34	LFDP grid point 0315 data starting on May 2000	03150500.txt	03150500.dtf	May 2000	every half hour	01/01/01
35	LFDP grid point 0315 data starting on May 2001	03150501.txt	03150501.dtf	May 2001	every half hour	01/01/02
36	LFDP grid point 0315 data starting on June 2002	03150602.txt	03150602.dtf	June 2002	every half hour	01/01/03
37	LFDP grid point 0318 data starting on February 2000	03180200.txt	03180200.dtf	February 2000	every half hour	06/01/00
38	LFDP grid point 0318 data starting on February 2001	03180201.txt	03180201.dtf	February 2001	every half hour	06/01/01
39	LFDP grid point 0318 data starting on February 2002	03180202.txt	03180202.dtf	February 2002	every half hour	06/01/02
40	LFDP grid point 0318 data starting on May 2000	03180500.txt	03180500.dtf	May 2000	every half hour	01/01/01
41	LFDP grid point 0318 data starting on May 2001	03180501.txt	03180501.dtf	May 2001	every half hour	01/01/02
42	LFDP grid point 0318 data starting on June 2002	03180602.txt	03180602.dtf	June 2002	every half hour	01/01/03
43	LFDP grid point 0321 data starting on February 2000	03210200.txt	03210200.dtf	February 2000	every half hour	06/01/00
44	LFDP grid point 0321 data starting on February 2001	03210201.txt	03210201.dtf	February 2001	every half hour	06/01/01
45	LFDP grid point 0321 data starting on February 2002	03210202.txt	03210202.dtf	February 2002	every half hour	06/01/02
46	LFDP grid point 0321 data starting on May 2000	03210500.txt	03210500.dtf	May 2000	every half hour	01/01/01
47	LFDP grid point 0312 data starting on February 2002	03120202.txt	03120202.dtf	February 2002	every half hour	06/01/02
48	LFDP grid point 0321 data starting on June 2002	03210602.txt	03210602.dtf	June 2002	every half hour	01/01/03
49	LFDP grid point 0324 data starting on February 2000	03240200.txt	03240200.dtf	February 2000	every half hour	06/01/00
50	LFDP grid point 0324 data starting on February 2001	03240201.txt	03240201.dtf	February 2001	every half hour	06/01/01
51	LFDP grid point 0324 data starting on February 2002	03240202.txt	03240202.dtf	February 2002	every half hour	06/01/02
52	LFDP grid point 0324 data starting on May 2000	03240500.txt	03240500.dtf	May 2000	every half hour	01/01/01
53	LFDP grid point 0324 data starting on May 2001	03240501.txt	03240501.dtf	May 2001	every half hour	01/01/02
54	LFDP grid point 0303 data starting on June 2002	0303h0602.txt	0303h0602.dtf	June 2002	every half hour	01/01/03
55	LFDP grid point 0303 data starting on January 2002	0303h0102.txt	0303h0102.dtf	January 2002	every half hour	06/01/02
56	LFDP grid point 0312 data starting on June 2002	03120602.txt	03120602.dtf	June 2002	every half hour	01/01/03
57	LFDP grid point 0315 data starting on February 2002	03150200.txt	03150200.dtf	February 2002	every half hour	06/01/00
58	LFDP grid point 0603 data starting on May 2000	06030500.txt	06030500.dtf	May 2000	every half hour	01/01/01
59	LFDP grid point 0603 data starting on May 2001	06030501.txt	06030501.dtf	May 2001	every half hour	01/01/02
60	LFDP grid point 0603 data starting on June 2002	06030602.txt	06030602.dtf	June 2002	every half hour	01/01/03
61	LFDP grid point 0315 data starting on February 2000	03150202.txt	03150202.dtf	February 2000	every half hour	06/01/02
62	LFDP grid point 0606 data starting on February 2001	06060201.txt	06060201.dtf	February 2001	every half hour	06/01/01
63	LFDP grid point 0606 data starting on February 2002	06060202.txt	06060202.dtf	February 2002	every half hour	06/01/02
64	LFDP grid point 0606 data starting on May 2000	06060500.txt	06060500.dtf	May 2000	every half hour	01/01/01
65	LFDP grid point 0606 data starting on May 2001	06060501.txt	06060501.dtf	May 2001	every half hour	01/01/02
66	LFDP grid point 0606 data starting on June 2002	06060602.txt	06060602.dtf	June 2002	every half hour	09/18/02
67	LFDP grid point 0609 data starting on February 2000	06090200.txt	06090200.dtf	February 2000	every half hour	06/01/00
68	LFDP grid point 0609 data starting on February 2001	06090201.txt	06090201.dtf	February 2001	every half hour	06/01/01
69	LFDP grid point 0609 data starting on February 2002	06090202.txt	06090202.dtf	February 2002	every half hour	06/01/02
70	LFDP grid point 0609 data starting on May 2000	06090500.txt	06090500.dtf	May 2000	every half hour	01/01/01
71	LFDP grid point 0609 data starting on May 2001	06090501.txt	06090501.dtf	May 2001	every half hour	01/01/02
72	LFDP grid point 0609 data starting on June 2002	06090602.txt	06090602.dtf	June 2002	every half hour	01/01/03
73	LFDP grid point 0612 data starting on February 2000	06120200.txt	06120200.dtf	February 2000	every half hour	06/01/00
74	LFDP grid point 0612 data starting on February 2001	06120201.txt	06120201.dtf	February 2001	every half hour	06/01/01
75	LFDP grid point 0612 data starting on February 2002	06120202.txt	06120202.dtf	February 2002	every half hour	06/01/02
76	LFDP grid point 0612 data starting on May 2000	06120500.txt	06120500.dtf	May 2000	every half hour	01/01/01
77	LFDP grid point 0612 data starting on May 2001	06120501.txt	06120501.dtf	May 2001	every half hour	01/01/02
78	LFDP grid point 0612 data starting on June 2002	06120602.txt	06120602.dtf	June 2002	every half hour	01/01/03
79	LFDP grid point 0615 data starting on February 2000	06150200.txt	06150200.dtf	February 2000	every half hour	06/01/00
80	LFDP grid point 0615 data starting on February 2001	06150201.txt	06150201.dtf	February 2001	every half hour	06/01/01
81	LFDP grid point 0615 data starting on February 2002	06150202.txt	06150202.dtf	February 2002	every half hour	06/01/02
82	LFDP grid point 0615 data starting on May 2000	06150500.txt	06150500.dtf	May 2000	every half hour	01/01/01
83	LFDP grid point 0615 data starting on May 2001	06150501.txt	06150501.dtf	May 2001	every half hour	01/01/02
84	LFDP grid point 0615 data starting on June 2002	06150602.txt	06150602.dtf	June 2002	every half hour	01/01/03
85	LFDP grid point 0618 data starting on February 2000	06180200.txt	06180200.dtf	February 2000	every half hour	06/01/00
86	LFDP grid point 0618 data starting on February 2001	06180201.txt	06180201.dtf	February 2001	every half hour	06/01/01
87	LFDP grid point 0618 data starting on February 2002	06180202.txt	06180202.dtf	February 2002	every half hour	06/01/02
88	LFDP grid point 0618 data starting on May 2000	06180500.txt	06180500.dtf	May 2000	every half hour	01/01/01
89	LFDP grid point 0618 data starting on May 2001	06180501.txt	06180501.dtf	May 2001	every half hour	01/01/02
90	LFDP grid point 0321 data starting on May 2001	03210501.txt	03210501.dtf	May 2001	every half hour	01/01/02
91	LFDP grid point 0621 data starting on February 2000	06210200.txt	06210200.dtf	February 2000	every half hour	06/01/00
92	LFDP grid point 0621 data starting on February 2001	06210201.txt	06210201.dtf	February 2001	every half hour	06/01/01
93	LFDP grid point 0621 data starting on February 2002	06210202.txt	06210202.dtf	February 2002	every half hour	06/01/02
94	LFDP grid point 0621 data starting on May 2000	06210500.txt	06210500.dtf	May 2000	every half hour	01/01/01
95	LFDP grid point 0621 data starting on May 2001	06210501.txt	06210501.dtf	May 2001	every half hour	01/01/02
96	LFDP grid point 0621 data starting on June 2002	06210602.txt	06210602.dtf	June 2002	every half hour	01/01/03
97	LFDP grid point 0624 data starting on February 2000	06240200.txt	06240200.dtf	February 2000	every half hour	06/01/00
98	LFDP grid point 0624 data starting on February 2001	06240201.txt	06240201.dtf	February 2001	every half hour	06/01/01
99	LFDP grid point 0624 data starting on February 2002	06240202.txt	06240202.dtf	February 2002	every half hour	06/01/02
100	LFDP grid point 0624 data starting on May 2000	06240500.txt	06240500.dtf	May 2000	every half hour	01/01/01
101	LFDP grid point 0624 data starting on May 2001	06240501.txt	06240501.dtf	May 2001	every half hour	01/01/02
102	LFDP grid point 0624 data starting on June 2002	06240602.txt	06240602.dtf	June 2002	every half hour	01/01/03
103	LFDP grid point 0903 data starting on February 2000	09030200.txt	09030200.dtf	February 2000	every half hour	06/01/00
104	LFDP grid point 0903 data starting on February 2001	09030201.txt	09030201.dtf	February 2001	every half hour	06/01/01
105	LFDP grid point 0303 data starting on May 2000	03030500.txt	03030500.dtf	May 2000	every half hour	01/01/01
106	LFDP grid point 0324 data starting on June 2002	03240602.txt	03240602.dtf	June 2002	every half hour	01/01/03
107	LFDP grid point 0303 data starting on January 2002	03030102.txt	03030102.dtf	January 2002	every half hour	06/01/02
108	LFDP grid point 0303 data starting on February 2001	03030201.txt	03030201.dtf	February 2001	every half hour	06/01/01
109	LFDP grid point 0603 data starting on February 2000	06030200.txt	06030200.dtf	February 2000	every half hour	06/01/00
110	LFDP grid point 0603 data starting on February 2001	06030201.txt	06030201.dtf	February 2001	every half hour	06/01/01
111	LFDP grid point 0906 data starting on February 2002	09060202.txt	09060202.dtf	February 2002	every half hour	06/01/02
112	LFDP grid point 0603 data starting on February 2002	06030202.txt	06030202.dtf	February 2002	every half hour	06/01/02
113	LFDP grid point 0906 data starting on May 2001	09060501.txt	09060501.dtf	May 2001	every half hour	01/01/02
114	LFDP grid point 0906 data starting on June 2002	09060602.txt	09060602.dtf	June 2002	every half hour	01/01/03
115	LFDP grid point 0909 data starting on February 2000	09090200.txt	09090200.dtf	February 2000	every half hour	06/01/00
116	LFDP grid point 0909 data starting on February 2001	09090201.txt	09090201.dtf	February 2001	every half hour	06/01/01
117	LFDP grid point 0909 data starting on May 2000	09090500.txt	09090500.dtf	May 2000	every half hour	01/01/01
118	LFDP grid point 0909 data starting on May 2001	09090501.txt	09090501.dtf	May 2001	every half hour	01/01/02
119	LFDP grid point 0909 data starting on June 2002	09090602.txt	09090602.dtf	June 2002	every half hour	01/01/03
120	LFDP grid point 0606 data starting on February 2000	06060200.txt	06060200.dtf	February 2000	every half hour	06/01/00
121	LFDP grid point 0912 data starting on February 2001	09120201.txt	09120201.dtf	February 2001	every half hour	06/01/01
122	LFDP grid point 0912 data starting on February 2002	09120202.txt	09120202.dtf	February 2002	every half hour	06/01/02
123	LFDP grid point 0912 data starting on May 2000	09120500.txt	09120500.dtf	May 2000	every half hour	01/01/01
124	LFDP grid point 0912 data starting on May 2001	09120501.txt	09120501.dtf	May 2001	every half hour	01/01/02
125	LFDP grid point 0912 data starting on June 2002	09120602.txt	09120602.dtf	June 2002	every half hour	01/01/03
126	LFDP grid point 0915 data starting on February 2000	09150200.txt	09150200.dtf	February 2000	every half hour	06/01/00
127	LFDP grid point 0915 data starting on February 2001	09150201.txt	09150201.dtf	February 2001	every half hour	06/01/01
128	LFDP grid point 0915 data starting on February 2002	09150202.txt	09150202.dtf	February 2002	every half hour	06/01/02
129	LFDP grid point 0915 data starting on May 2000	09150500.txt	09150500.dtf	May 2000	every half hour	01/01/01
130	LFDP grid point 0915 data starting on May 2001	09150501.txt	09150501.dtf	May 2001	every half hour	01/01/02
131	LFDP grid point 0915 data starting on June 2002	09150602.txt	09150602.dtf	June 2002	every half hour	01/01/03
132	LFDP grid point 0918 data starting on February 2000	09180200.txt	09180200.dtf	February 2000	every half hour	06/01/00
133	LFDP grid point 0918 data starting on February 2001	09180201.txt	09180201.dtf	February 2001	every half hour	06/01/01
134	LFDP grid point 0918 data starting on February 2002	09180202.txt	09180202.dtf	February 2002	every half hour	06/01/02
135	LFDP grid point 0918 data starting on May 2000	09180500.txt	09180500.dtf	May 2000	every half hour	01/01/01
136	LFDP grid point 0918 data starting on May 2001	09180501.txt	09180501.dtf	May 2001	every half hour	01/01/02
137	LFDP grid point 0918 data starting on June 2002	09180602.txt	09180602.dtf	June 2002	every half hour	01/01/03
138	LFDP grid point 0921 data starting on February 2000	09210200.txt	09210200.dtf	February 2000	every half hour	06/01/00
139	LFDP grid point 0921 data starting on February 2001	09210201.txt	09210201.dtf	February 2001	every half hour	06/01/01
140	LFDP grid point 0921 data starting on February 2002	09210202.txt	09210202.dtf	February 2002	every half hour	06/01/02
141	LFDP grid point 0921 data starting on May 2000	09210500.txt	09210500.dtf	May 2000	every half hour	01/01/01
142	LFDP grid point 0921 data starting on May 2001	09210501.txt	09210501.dtf	May 2001	every half hour	01/01/02
143	LFDP grid point 0921 data starting on June 2002	09210602.txt	09210602.dtf	June 2002	every half hour	01/01/03
144	LFDP grid point 0924 data starting on February 2000	09240200.txt	09240200.dtf	February 2000	every half hour	06/01/00
145	LFDP grid point 0924 data starting on February 2001	09240201.txt	09240201.dtf	February 2001	every half hour	06/01/01
146	LFDP grid point 0924 data starting on February 2002	09240202.txt	09240202.dtf	February 2002	every half hour	06/01/02
147	LFDP grid point 0924 data starting on May 2000	09240500.txt	09240500.dtf	May 2000	every half hour	01/01/01
148	LFDP grid point 0924 data starting on May 2001	09240501.txt	09240501.dtf	May 2001	every half hour	01/01/02
149	LFDP grid point 0924 data starting on June 2002	09240602.txt	09240602.dtf	June 2002	every half hour	01/01/03
150	LFDP grid point 1203 data starting on February 2000	12030200.txt	12030200.dtf	February 2000	every half hour	06/01/00
151	LFDP grid point 1203 data starting on February 2001	12030201.txt	12030201.dtf	February 2001	every half hour	06/01/01
152	LFDP grid point 1203 data starting on February 2002	12030202.txt	12030202.dtf	February 2002	every half hour	06/01/02
153	LFDP grid point 1203 data starting on May 2000	12030500.txt	12030500.dtf	May 2000	every half hour	01/01/01
154	LFDP grid point 1203 data starting on May 2001	12030501.txt	12030501.dtf	May 2001	every half hour	01/01/02
155	LFDP grid point 1203 data starting on June 2002	12030602.txt	12030602.dtf	June 2002	every half hour	01/01/03
156	LFDP grid point 1206 data starting on February 2000	12060200.txt	12060200.dtf	February 2000	every half hour	06/01/00
157	LFDP grid point 1206 data starting on February 2001	12060201.txt	12060201.dtf	February 2001	every half hour	06/01/01
158	LFDP grid point 1206 data starting on February 2002	12060202.txt	12060202.dtf	February 2002	every half hour	06/01/02
159	LFDP grid point 1206 data starting on May 2000	12060500.txt	12060500.dtf	May 2000	every half hour	01/01/01
160	LFDP grid point 1206 data starting on May 2001	12060501.txt	12060501.dtf	May 2001	every half hour	01/01/02
161	LFDP grid point 1206 data starting on June 2002	12060602.txt	12060602.dtf	June 2002	every half hour	01/01/03
162	LFDP grid point 1209 data starting on February 2000	12090200.txt	12090200.dtf	February 2000	every half hour	06/01/00
163	LFDP grid point 1209 data starting on February 2001	12090201.txt	12090201.dtf	February 2001	every half hour	06/01/01
164	LFDP grid point 1209 data starting on February 2002	12090202.txt	12090202.dtf	February 2002	every half hour	06/01/02
165	LFDP grid point 1209 data starting on May 2000	12090500.txt	12090500.dtf	May 2000	every half hour	01/01/01
166	LFDP grid point 1209 data starting on May 2001	12090501.txt	12090501.dtf	May 2001	every half hour	01/01/02
167	LFDP grid point 1209 data starting on June 2002	12090602.txt	12090602.dtf	June 2002	every half hour	01/01/03
168	LFDP grid point 1212 data starting on February 2000	12120200.txt	12120200.dtf	February 2000	every half hour	06/01/00
169	LFDP grid point 1212 data starting on February 2001	12120201.txt	12120201.dtf	February 2001	every half hour	06/01/01
170	LFDP grid point 1212 data starting on May 2000	12120500.txt	12120500.dtf	May 2000	every half hour	01/01/01
171	LFDP grid point 1212 data starting on May 2001	12120501.txt	12120501.dtf	May 2001	every half hour	01/01/02
172	LFDP grid point 1212 data starting on June 2002	12120602.txt	12120602.dtf	June 2002	every half hour	01/01/03
173	LFDP grid point 1215 data starting on February 2000	12150200.txt	12150200.dtf	February 2000	every half hour	06/01/00
174	LFDP grid point 1215 data starting on February 2001	12150201.txt	12150201.dtf	February 2001	every half hour	06/01/01
175	LFDP grid point 1215 data starting on May 2000	12150500.txt	12150500.dtf	May 2000	every half hour	01/01/01
176	LFDP grid point 1215 data starting on June 2002	12150602.txt	12150602.dtf	June 2002	every half hour	01/01/03
177	LFDP grid point 1215 data starting on December 2000	12151200.txt	12151200.dtf	December 2000	every half hour	04/16/01
178	LFDP grid point 0618 data starting on June 2002	06180602.txt	06180602.dtf	June 2002	every half hour	01/01/03
179	LFDP grid point 1218 data starting on February 2001	12180201.txt	12180201.dtf	February 2001	every half hour	06/01/01
180	LFDP grid point 1218 data starting on February 2002	12180202.txt	12180202.dtf	February 2002	every half hour	06/01/02
181	LFDP grid point 1218 data starting on May 2000	12180500.txt	12180500.dtf	May 2000	every half hour	01/01/01
182	LFDP grid point 1218 data starting on May 2001	12180501.txt	12180501.dtf	May 2001	every half hour	01/01/02
183	LFDP grid point 1218 data starting on June 2002	12180602.txt	12180602.dtf	June 2002	every half hour	01/01/03
184	LFDP grid point 1221 data starting on February 2000	12210200.txt	12210200.dtf	February 2000	every half hour	06/01/00
185	LFDP grid point 1221 data starting on February 2001	12210201.txt	12210201.dtf	February 2001	every half hour	06/01/01
186	LFDP grid point 1221 data starting on February 2002	12210202.txt	12210202.dtf	February 2002	every half hour	06/01/02
187	LFDP grid point 1221 data starting on May 2000	12210500.txt	12210500.dtf	May 2000	every half hour	01/01/01
188	LFDP grid point 1221 data starting on May 2001	12210501.txt	12210501.dtf	May 2001	every half hour	01/01/02
189	LFDP grid point 1221 data starting on June 2002	12210602.txt	12210602.dtf	June 2002	every half hour	01/01/03
190	LFDP grid point 1224 data starting on February 2000	12240200.txt	12240200.dtf	February 2000	every half hour	06/01/00
191	LFDP grid point 1224 data starting on February 2001	12240201.txt	12240201.dtf	February 2001	every half hour	06/01/01
192	LFDP grid point 1224 data starting on February 2002	12240202.txt	12240202.dtf	February 2002	every half hour	06/01/02
193	LFDP grid point 1224 data starting on May 2000	12240500.txt	12240500.dtf	May 2000	every half hour	01/01/01
194	LFDP grid point 1224 data starting on May 2001	12240501.txt	12240501.dtf	May 2001	every half hour	01/01/02
195	LFDP grid point 1224 data starting on June 2002	12240602.txt	12240602.dtf	June 2002	every half hour	01/01/03
196	LFDP grid point 1503 data starting on February 2000	15030200.txt	15030200.dtf	February 2000	every half hour	06/01/00
197	LFDP grid point 1503 data starting on February 2001	15030201.txt	15030201.dtf	February 2001	every half hour	06/01/01
198	LFDP grid point 1503 data starting on February 2002	15030202.txt	15030202.dtf	February 2002	every half hour	06/01/02
199	LFDP grid point 1503 data starting on May 2000	15030500.txt	15030500.dtf	May 2000	every half hour	01/01/01
200	LFDP grid point 1503 data starting on May 2001	15030501.txt	15030501.dtf	May 2001	every half hour	01/01/02
201	LFDP grid point 1503 data starting on June 2002	15030602.txt	15030602.dtf	June 2002	every half hour	01/01/03
202	LFDP grid point 1506 data starting on February 2000	15060200.txt	15060200.dtf	February 2000	every half hour	06/01/00
203	LFDP grid point 1506 data starting on February 2001	15060201.txt	15060201.dtf	February 2001	every half hour	06/01/01
204	LFDP grid point 1506 data starting on February 2002	15060202.txt	15060202.dtf	February 2002	every half hour	06/01/02
205	LFDP grid point 1506 data starting on May 2000	15060500.txt	15060500.dtf	May 2000	every half hour	01/01/01
206	LFDP grid point 1506 data starting on June 2002	15060602.txt	15060602.dtf	June 2002	every half hour	01/01/03
207	LFDP grid point 1509 data starting on February 2000	15090200.txt	15090200.dtf	February 2000	every half hour	06/01/00
208	LFDP grid point 1509 data starting on February 2001	15090201.txt	15090201.dtf	February 2001	every half hour	06/01/01
209	LFDP grid point 1509 data starting on February 2002	15090202.txt	15090202.dtf	February 2002	every half hour	06/01/02
210	LFDP grid point 1509 data starting on May 2000	15090500.txt	15090500.dtf	May 2000	every half hour	01/01/01
211	LFDP grid point 1509 data starting on May 2001	15090501.txt	15090501.dtf	May 2001	every half hour	01/01/02
212	LFDP grid point 1509 data starting on June 2002	15090602.txt	15090602.dtf	June 2002	every half hour	01/01/03
213	LFDP grid point 1512 data starting on February 2000	15120200.txt	15120200.dtf	February 2000	every half hour	06/01/00
214	LFDP grid point 1512 data starting on February 2001	15120201.txt	15120201.dtf	February 2001	every half hour	06/01/01
215	LFDP grid point 0303 data starting on February 2002	03030200 .txt	03030200.dtf	February 2002	every half hour	06/01/00
216	LFDP grid point 1512 data starting on May 2000	15120500.txt	15120500.dtf	May 2000	every half hour	01/01/01
217	LFDP grid point 1512 data starting on May 2001	15120501.txt	15120501.dtf	May 2001	every half hour	01/01/02
218	LFDP grid point 1512 data starting on June 2002	15120602.txt	15120602.dtf	June 2002	every half hour	01/01/03
219	LFDP grid point 0912 data starting on February 2000	09120200.txt	09120200.dtf	February 2000	every half hour	06/01/00
220	LFDP grid point 1515 data starting on February 2001	15150201.txt	15150201.dtf	February 2001	every half hour	06/01/01
221	LFDP grid point 1515 data starting on February 2002	15150202.txt	15150202.dtf	February 2002	every half hour	06/01/02
222	LFDP grid point 1515 data starting on May 2000	15150500.txt	15150500.dtf	May 2000	every half hour	01/01/01
223	LFDP grid point 1515 data starting on May 2001	15150501.txt	15150501.dtf	May 2001	every half hour	01/01/02
224	LFDP grid point 1515 data starting on June 2002	15150602.txt	15150602.dtf	June 2002	every half hour	01/01/03
225	LFDP grid point 1518 data starting on February 2000	15180200.txt	15180200.dtf	February 2000	every half hour	06/01/00
226	LFDP grid point 1518 data starting on February 2001	15180201.txt	15180201.dtf	February 2001	every half hour	06/01/01
227	LFDP grid point 1518 data starting on February 2002	15180202.txt	15180202.dtf	February 2002	every half hour	06/01/02
228	LFDP grid point 1518 data starting on May 2000	15180500.txt	15180500.dtf	May 2000	every half hour	01/01/01
229	LFDP grid point 1518 data starting on May 2001	15180501.txt	15180501.dtf	May 2001	every half hour	01/01/02
230	LFDP grid point 1518 data starting on June 2002	15180602.txt	15180602.dtf	June 2002	every half hour	01/01/03
231	LFDP grid point 1521 data starting on February 2000	15210200.txt	15210200.dtf	February 2000	every half hour	06/01/00
232	LFDP grid point 1521 data starting on February 2001	15210201.txt	15210201.dtf	February 2001	every half hour	06/01/01
233	LFDP grid point 1521 data starting on May 2000	15210500.txt	15210500.dtf	May 2000	every half hour	01/01/01
234	LFDP grid point 1521 data starting on May 2001	15210501.txt	15210501.dtf	May 2001	every half hour	01/01/02
235	LFDP grid point 1521 data starting on June 2002	15210602.txt	15210602.dtf	June 2002	every half hour	01/01/03
236	LFDP grid point 1524 data starting on February 2000	15240200.txt	15240200.dtf	February 2000	every half hour	06/01/00
237	LFDP grid point 1524 data starting on February 2001	15240201.txt	15240201.dtf	February 2001	every half hour	06/01/01
238	LFDP grid point 1524 data starting on February 2002	15240202.txt	15240202.dtf	February 2002	every half hour	06/01/02
239	LFDP grid point 1524 data starting on May 2000	15240500.txt	15240500.dtf	May 2000	every half hour	01/01/01
240	LFDP grid point 1524 data starting on May 2001	15240501.txt	15240501.dtf	May 2001	every half hour	01/01/02
241	LFDP grid point 1524 data starting on June 2002	15240602.txt	15240602.dtf	June 2002	every half hour	01/01/03

RESEARCH LOCATION: Luquillo Forest Dynamics Plot (LFDP), Luquillo Experimental Forest (LEF)

INVESTIGATORS:

PRINCIPAL INVESTIGATORS	E-MAIL address
Robert B. Waide	rwaide@lternet.edu

OTHER RESEARCHERS	E-MAIL address

CONTACT PERSONS	E-MAIL address	Phone Number (Include area code)
Robert B. Waide	rwaide@lternet.edu	(505)272-7311

SOURCE OF FUNDING (SPONSOR): NSF - LEF LTER

DATA SET ABSTRACT: This data set represents environmental variables collected to help interpret the distribution of plants and animals on the LFDP. Data are collected at each of 40 points designated as sampling points for animal studies. Measurements include temperature, dew point and absolute and relative humidity.

There are 40 groups of data files, one for each of the 40 points in the LFDP. The first four digits for each file in a group are the same and reflect the grid point identifier in the LFDP. Thus, grid point 03,03 will have data files beginning 0303. The last four digits reflect the month and year of the first data point in the file (e.g., 03030200 contains data from point 03,03 that was collected beginning in February 2000). For point 03,03 only, two sensors were deployed, one at 1.0 m and the other at 0.5 m. Names of data files for the high sensor contain the letters "hi" after the grid point identifier, and names of data files for the low sensor contain the letters "lo" after the grid point identifier. Data from the entire data set were exported to Excel books, two books for each grid point, one containing temperature data in degrees Centigrade and the other containing data for relative humidity. Names for these books reflect the grid cell identifier as well as whether the data are for temperature (0303T) or relative humidity (0303RH). Data from different collection periods are separated on different sheets in the Excel books, with pages labeled with the month and year of the first data point on the sheet.

DATA SET METHODS: Measurements are collected using automated data loggers (HOBO Pro Series Temp, RH © 1998 ONSET) placed 50 cm above the ground on posts marking each of the 40 sampling points of the Luquillo Forest Dynamics Plot. Each HOBO is placed inside an inverted beverage cup (white plastic, 16 oz). The cups are suspended by string so that the sensor opening rests 50 cm above the ground. During the initial sampling period (February 6-May 15, 2000), placement of the cups was irregular. The measured distance from the ground during this period for each cup is shown in the table above. All cups were corrected on May 15, 2000, so that sensors were a measured 50 cm above the ground. However, given the uneven nature of the substrate in the LFDP, placement of the sensors could vary ± 10 cm from the average ground level around the sampling point. Data were downloaded from the sensors using a HOBO Shuttle © ONSET Corporation and transferred to a computer using Boxcar Pro 4.0 software © ONSET Computer Corporation 1999 (P.O. Box 3450, Pocasset, MA 02559-3450; phone, 508/759-9500; email, loggerhelp@onsetcomp.com). Subsequent maintenance of the data was performed using the same software. HOBO Pro Series sensors, HOBO Shuttles, and Boxcar Pro 4.0 software is available from Forestry Suppliers, part numbers H08-032-08, H09-003-08, and BC3_7-ON. Copies of users manuals for the HOBO Pro Series Sensors, the HOBO Shuttle, and a copy of the Boxcar 4.0 Pro software is filed with the Luquillo LTER data management office. An online copy of this users manuals can be found at: ftp://ftp.onsetcomp.com/Public/Hobo_StowAway/manuals/. More information about the specifications can be found at: http://www.onsetcomp.com/Products/Product_Pages/HOBO_H08/hobo_pro_specs.html.

All sensors were launched using the same computer before being placed in the field. Sensors were set to begin operation at 0100 hours on May 6, 2000. Before placement in the field, each sensor was tested for battery strength and overall functionality. In addition, all sensors were exposed to standard conditions to compare initial calibrations. Sensors were placed inside a refrigerator, which was then allowed gradually to approach room temperature. Results of this calibration test are included in the data set with the following identifying file names.

REFERENCES:

CROSS-REFERENCES (other data sets related to this one): LTERDBAS46: Elevation at grid points on the Luquillo Forest Dynamics Plot (LFDP), Puerto Rico; LTERDB47: Physical environment of the Luquillo Forest Dynamics Plot (LFDP), Puerto Rico, LTERDB57: Tree damage by Hurricane Hugo at the Luquillo Forest Dynamics Plot (LFDP), Puerto Rico, LTERDB60: Tree Map for Census at the Luquillo Forest Dynamics Plot (LFDP), Puerto Rico; LTERDB62:  Canopy height profile starting 1992, 1994 and 1996 of the Luquillo Forest Dynamics Plot (LFDP), Puerto Rico; LTERDB118: Species names and codes of the Luquillo Forest Dynamics Plot (LFDP), Puerto Rico; LTERDB119: Census of species, diameter and location at the Luquillo Forest Dynamics Plot (LFDP), Puerto Rico; LTERDB129: Temperature and humidity in the LFDP (40 points)

SAMPLE LOCATION: N/A

STORAGE SITES (of data files): LUQ LTER Data Manager's Cabinet DM333-01,