Dicerandra christmanii demographic data
收藏DataONE2023-04-25 更新2024-06-08 收录
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These data files consist of demographic measures taken on marked plants of the federally endangered Dicerandra christmanii from natural populations (in open gaps and roadsides), an augmented population, and introduced population. Data were collected from seven populations across two sites from 199 â2018 although populations were initiated in different years. , Sampling of the natural population of D. christmanii began in 1994 at its only known protected population Flamingo Villas Lake Wales Ridge National Wildlife Refuge (LWRNWR) owned and managed by the USFWS. Initiated in 1994, plants were sampled quarterly (January, April, July and October) at a single population (FV north road) within a 45 m by 2 m belt transect with six, 1 m wide perpendicular transects extending out at various lengths. Sampling efforts within the six belt transects were reduced to single 1 x 1 m quads in 1996 with plant tags outside the quads or longer transects pulled and coded as âno longer in transectâ (code 6). Two additional transects were added in 1999; FV south road west was a 51 m long, 1 m wide transect and FV south road east was a 31 m long, 1 m wide transect. A fourth population was added in 2000, FV south gaps, sampling plants in 16 gaps.
We augmented populations of D. christmanii in the southern section of Flamingo Villas LWRNWR in 2010 using seeds sown in ..., All files are CSV extensions and can be opened with most standard programs (including Excel and R).
创建时间:
2025-07-16



