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I present the largest survey of seed germination yet for Barro Colorado Island (BCI) and central Panama, based on 1,226 seed collections from 732 species, in 103 families, including trees, shrubs, lianas, vines, herbs, and epiphytes. Most collections were germinated in both sun and shade habitats in growing houses on BCI, simulating tree fall gap and shaded understory conditions. Many ad hoc treatments were also utilized. Data were collected during the field portion (1985–1989) of the BCI Seedling Flora Project. This publication marks the public release of the entire dataset, parts of which have previously been shared with BCI colleagues. I hope that this dataset will provide background information for those needing to produce seedlings from seed for experimental studies and that it will encourage others to incorporate seed germination as an additional plant trait into community analyses. 

We provide data on mean dry and wet mass of > 800 species from Yasuní National Forest, Ecuador collected between 2000 and 2014. Species include trees, shrubs, lianas and herbs. We also provide data on number of seeds per fruit for >1100 species compiled in 2016, along with information on fruit type and dispersal mode. Both of these data sets supplement previously published data on flowering and fruiting phenology from this equatorial, ever-wet rainforest in eastern Ecuador (Garwood et al. 2023). Garwood, N.C., S.J. Wright, R. Valencia, and M.R. Metz. 2023. Rainforest phenology: flower, fruit and seed production from biweekly collections of 200 traps in the Yasuní Forest Dynamics Plot, Ecuador, 2000-2018 ver 1. Environmental Data Initiative. https://doi.org/10.6073/pasta/5e6cb3d7ff741fd9d21965c4a904bc1f (Accessed 2024-03-27). 

Supplement 6 - The full data set for a seed mass survey conducted at Barro Colorado Island, Panama. The full data set is included twice in comma and tab delimited formats. Supplement 1 Table J describes all fields in Supplement 6. Supplement 1 Tables K through N describe codes for information included in each field of Supplement 6. Supplement 1 can be found here: https://doi.org/10.25573/data.22801958 The source reference follows: Garwood, N. C. 2023. An Expanded Survey of Seed Germination for Barro Colorado Island. In The First 100 Years of Research on Barro Colorado Island: Plant and Ecosystem Science, ed. H. C. Muller-Landau and S. J. Wright: Smithsonian Institution Scholarly Press, Washington, DC. 

Four annotated examples that explain how to interpret records in the full data set for the seed germination survey conducted at Barro Colorado Island, Panama. Supplement 1 describes methods and provides variable definitions. Supplement 1 can be found here: https://doi.org/10.25573/data.22801958.v1The source reference follows: Garwood, N. C. 2024. Chapter 18 - An Expanded Survey of Seed Germination for Barro Colorado Island. In The First 100 Years of Research on Barro Colorado: Plant and Ecosystem Science, ed. H. C. Muller-Landau and S. J. Wright: Smithsonian Institution Scholarly Press, Washington, DC. 

A reduced version of the full data set for the seed germination survey conducted at Barro Colorado Island, Panama. The reduced version includes just the one record for each species. The single record is believed to best represent the germination of the species. The reduced data set is included twice in comma and tab delimited formats. Supplement 1 Table A describes all fields in the data file. Supplement 1 Tables B through H define codes included in each field. Supplement 1 can be found here: https://doi.org/10.25573/data.22801958.v1The source reference follows: Garwood, N. C. 2024. Chapter 18 - An Expanded Survey of Seed Germination for Barro Colorado Island. In The First 100 Years of Research on Barro Colorado: Plant and Ecosystem Science, ed. H. C. Muller-Landau and S. J. Wright: Smithsonian Institution Scholarly Press, Washington, DC. 

The full data set for the seed germination survey conducted at Barro Colorado Island, Panama formatted as an easily readable and searchable PDF file. Table 1 describes the column headings for the full data set. Table 2 defines codes used frequently in the full data set . Table 3 defines codes used in "Duration Notes", the final column of the full data set. Table 4 defines miscellaneous symbols used in Supplement 2. Table 5 defines symbols used to represent probability levels. The next 195 pages present the full data set.The source reference follows: Garwood, N. C. 2024. Chapter 18 - An Expanded Survey of Seed Germination for Barro Colorado Island. In The First 100 Years of Research on Barro Colorado: Plant and Ecosystem Science, ed. H. C. Muller-Landau and S. J. Wright: Smithsonian Institution Scholarly Press, Washington, DC. 

The full data set for the seed germination survey conducted at Barro Colorado Island, Panama. The full data set is included twice in comma and tab delimited formats. Supplement 1 Table A describes all fields in the data file. Supplement 1 Tables B through H define codes included in each field. Supplement 1 can be found here: https://doi.org/10.25573/data.22801958.v1The source reference follows: Garwood, N. C. 2024. Chapter 18 - An Expanded Survey of Seed Germination for Barro Colorado Island. In The First 100 Years of Research on Barro Colorado: Plant and Ecosystem Science, ed. H. C. Muller-Landau and S. J. Wright: Smithsonian Institution Scholarly Press, Washington, DC. 

Metadata describing seed germination and seed mass surveys conducted at Barro Colorado Island, Panama. The metadata includes detailed descriptions of methods and definitions of variables in accompanying data files. The accompanying data files are supplements 4, 5, and 6. The source reference follows: Garwood, N. C. 2024. Chapter 18 - An Expanded Survey of Seed Germination for Barro Colorado Island. In The First 100 Years of Research on Barro Colorado: Plant and Ecosystem Science, ed. H. C. Muller-Landau and S. J. Wright: Smithsonian Institution Scholarly Press, Washington, DC. 

Abstract All species must partition resources among the processes that underly growth, survival, and reproduction. The resulting demographic trade‐offs constrain the range of viable life‐history strategies and are hypothesized to promote local coexistence. Tropical forests pose ideal systems to study demographic trade‐offs as they have a high diversity of coexisting tree species whose life‐history strategies tend to align along two orthogonal axes of variation: a growth–survival trade‐off that separates species with fast growth from species with high survival and a stature–recruitment trade‐off that separates species that achieve large stature from species with high recruitment. As these trade‐offs have typically been explored for trees ≥1 cm dbh, it is unclear how species' growth and survival during earliest seedling stages are related to the trade‐offs for trees ≥1 cm dbh. Here, we used principal components and correlation analyses to (1) determine the main demographic trade‐offs among seed‐to‐seedling transition rates and growth and survival rates from the seedling to overstory size classes of 1188 tree species from large‐scale forest dynamics plots in Panama, Puerto Rico, Ecuador, Taiwan, and Malaysia and (2) quantify the predictive power of maximum dbh, wood density, seed mass, and specific leaf area for species' position along these demographic trade‐off gradients. In four out of five forests, the growth–survival trade‐off was the most important demographic trade‐off and encompassed growth and survival of both seedlings and trees ≥1 cm dbh. The second most important trade‐off separated species with relatively fast growth and high survival at the seedling stage from species with relatively fast growth and high survival ≥1 cm dbh. The relationship between seed‐to‐seedling transition rates and these two trade‐off aces differed between sites. All four traits were significant predictors for species' position along the two trade‐off gradients, albeit with varying importance. We concluded that, after accounting for the species' position along the growth–survival trade‐off, tree species tend to trade off growth and survival at the seedling with later life stages. This ontogenetic trade‐off offers a mechanistic explanation for the stature–recruitment trade‐off that constitutes an additional ontogenetic dimension of life‐history variation in species‐rich ecosystems. 

Seedling demography data are provided in annual censuses of 600 seedling plots in an equatorial, ever-wet rainforest in eastern Ecuador, in Yasuní National Park. This long-term study uses standardized methodology from the Smithsonian ForestGEO network of plots, and in particular coordination with similar studies in Luquillo, Puerto Rico, and Barro Colorado Island, Panama. We address hypotheses about the maintenance of forest diversity and long-term variation, and link our data to companion studies of flowering and fruiting phenology and sapling and adult dynamics in the Yasuní Forest Dynamics 50-ha Plot. The project is ongoing, and additional data will be added as they are processed.