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Data from: Environmental controls on canopy foliar N distributions in a neotropical lowland forest

Creators: Balzotti, Christopher S., Asner, Gregory P., Taylor, Philip G., Cleveland, Cory C., Cole, Rebecca, Martin, Roberta E., Nasto, Megan, Osborne, Brooke B., Porder, Stephen, Townsend, Alan R.
Year: 2016
DOI: 10.5061/dryad.ck585
License: CC0 (Public Domain)
Location: Costa Rica
Publisher: Dryad
Tags: Anacardium excelsum, Lonchocarpus guatemalensis, Ficus bullenei, Garcinia madruno, Ficus crassivenosa, Vantanea barbourii, Sloanea picapica, Inga punctata, Persea americana, Otoba novogranatensis, Astrocaryum standleyanum, Inga ruiziana, Serjania atrolineata, Mikania hookeriana, Omphalea diandra, Chionanthus panamensis, Inga alba, Marila laxiflora, Duguetia confusa, Terminalia amazonia, Miconia multispicata, Croton schiedeanus, Conostegia icosandra, Nectandra umbrosa, Inga sertulifera, Ocotea mollifolia, Albizia adinocephala, Lonchocarpus heptaphyllus, Xylopia macrantha, Calophyllum longifolium, Simarouba amara, Pouteria chiricana, Psiguria warscewiczii, Tetrathylacium macrophyllum, Vitex cooperi, Luehea seemannii, Marcgravia nepenthoides, Hirtella tubiflora, Brosimum lactescens, Chione venosa, Hieronyma alchorneoides, Pouteria fossicola, Guarea glabra, Tocoyena pittieri, Hibiscus tiliaceus, Machaerium seemannii, Cedrela odorata, Dichapetalum hammelii, Hippocratea volubilis, Randia altiscandens, Miconia schlimii, Goethalsia meiantha, Trichospermum galeottii, Rourea latifoliolata, Tectona grandis, Callicarpa acuminata, Ficus paraensis, Oxandra venezuelana, Inga bella, Miconia argentea, Unonopsis osae, Jacaranda copaia, Doliocarpus multiflorus, Topobea maurofernandeziana, Chrysochlamys glauca, Alchornea grandis, Byrsonima crassifolia, Virola macrocarpa, Clarisia biflora, Virola surinamensis, Lacmellea panamensis, Mendoncia gracilis, Henriettea succosa, Protium tenuifolium, Inga spectabilis, Micropholis melinoniana, Bauhinia guianensis, Combretum decandrum, Parathesis acostensis, Bunchosia nitida, Tetrapterys tinifolia, Castilla tunu, Buchenavia costaricensis, Gordonia brandegeei, Bactris baileyana, Brosimum costaricanum, Theobroma bicolor, Lonchocarpus ferrugineus, Solanum circinatum, Guarea pterorhachis, Faramea occidentalis, Perebea hispidula, Strychnos peckii, Maranthes panamensis, Spondias mombin, Psychotria grandis, Cheiloclinium cognatum, Senna alata, Terminalia oblonga, Ochroma pyramidale, Pouteria subrotata, Pouteria glomerata, Saurauia montana, Matayba oppositifolia, Quararibea platyphylla, Crescentia cujete, Trophis racemosa, Cordia alliodora, Laetia procera, Pachira glabra, Curatella americana, Cnestidium rufescens, Inga umbelifera, Laetia thamnia, Protium sp. 2, Casearia arguta, Xylopia frutescens, Conostegia superba, Ficus obtusifolia, Cecropia peltata, Dalbergia brownei, Coussapoa villosa, Minquartia guianensis, Dussia discolor, Celtis schippii, Marcgravia schippii, Posoqueria latifolia, Mucuna holtonii, Casearia sylvestris, Smilax spinosa, Hampea appendiculata, Machaerium kegelii, Aspidosperma spruceanum, Inga nobilis, Batocarpus costaricensis, Trema micrantha, Davilla nitida, Virola koschnyi, Cupania rufescens, Ficus insipida, Dialium guianense, Ternstroemia multiovulata, Ceiba pentandra, Dendropanax caucanus, Alchornea grandiflora, Ficus nymphaeifolia, Erblichia odorata, Paullinia rugosa, Licaria misantlae, Pouteria torta, Quararibea asterolepis, Abuta panamensis, Cestrum racemosum, Adelobotrys adscendens, Diphysa americana, Trichilia tuberculata, Cecropia insignis, Isertia laevis, Calophyllum brasiliense, Pourouma bicolor, Abarema macradenia, Compsoneura excelsa, Lacistema aggregatum, Inga venusta, Styrax glabratus, Inga sapindoides, Tabebuia chrysantha, Brosimum utile, Tetragastris panamensis, Cassia grandis, Coccoloba longipes, Cissus biformifolia, Ficus maxima, Manilkara staminodella, Meliosma allenii, Pachira sessilis, Lozania pittieri, Ocotea pullifolia, Ocotea ira, Sapium glandulosum, Drypetes standleyi, Eschweilera aguilarii, Dioscorea urophylla, Genipa americana, Senna papillosa, Angostura granulosa, Mouriri gleasoniana, Passiflora vitifolia, Cordia eriostigma, Pleuranthodendron lindenii, Souroubea vallicola, Myroxylon balsamum, Saurauia pittieri, Tovomita longifolia, Borojoa patinoi, Cespedesia spathulata, Desmoncus stans, Stemmadenia donnell-smithii, Pouteria amygdalicarpa, Licania operculipetala, Brosimum guianense, Guatteria amplifolia, Heisteria concinna, Aspidosperma myristicifolium, Maquira guianensis subsp. costaricana, Xylopia sericophylla, Paullinia turbacensis, Terminalia catappa, Schlegelia parviflora, Apeiba tibourbou, Nectandra purpurea, Ardisia dunlapiana, Chomelia microloba, Vochysia ferruginea, Simaba cedron, Tapirira guianensis, foliar nitrogen, Clusia valerioi, Lozania klugii, Tachigali versicolor, Coccoloba tuerckheimii, leaf nitrogen, Hiraea grandifolia, canopy nitrogen, Gustavia brachycarpa, Qualea paraensis, Caryocar costaricense, Sterculia costaricana, Pouteria juruana, Ficus tonduzii, Pseudolmedia spuria, Cecropia obtusifolia, Ficus pertusa, Ormosia costulata, Vochysia guatemalensis, Zanthoxylum fagara, Chimarrhis latifolia, Palicourea guianensis, Licania platypus, Guettarda sanblasensis, Lecointea amazonica, Attalea butyracea, Chrysophyllum oliviforme, Cordia bicolor, Jacaratia spinosa, Elaeis oleifera, Guazuma ulmifolia, Bravaisia integerrima, Inga thibaudiana, Pouteria durlandii, Ampelocera macrocarpa, Socratea exorrhiza, Andira inermis, Virola sebifera, Bunchosia argentea, Eugenia oerstediana, Hirtella triandra, Ocotea veraguensis, Vismia baccifera, Sorocea pubivena, leaf trait nitrogen, Passiflora quadrangularis, Symphonia globulifera, Piper multiplinervium, Ficus crocata, Carapa guianensis, Myrcia fallax, Peltogyne purpurea, Pleodendron costaricense, Forest Ecology, Biodiversity & Conservation, Climate Change Impacts, Weather & Atmospheric Science, Data Science & Modeling

Description

Distributions of foliar nutrients across forest canopies can give insight into their plant functional diversity and improve our understanding of biogeochemical cycling. We used airborne remote sensing and Partial Least Squares Regression (PLSR) to quantify canopy foliar nitrogen (N) across ~164 km2 of wet lowland tropical forest in the Osa Peninsula, Costa Rica. We determined the relative influence of climate and topography on the observed patterns of canopy foliar N using a gradient boosting model (GBM) technique. At a local scale, where climate and substrate where constant, we explored the influence of slope position on canopy N by quantifying canopy N on remnant terraces, their adjacent slopes and knife edged ridges. In addition, we climbed and sampled 540 trees and analyzed foliar N in order to quantify the role of species identity (phylogeny) and environmental factors in predicting canopy N. Observed canopy N heterogeneity reflected environmental factors working at multiple spatial scales. Across the larger landscape, elevation and precipitation had the highest relative influence on predicting canopy foliar N (30 and 24%), followed by soils (15%), site exposure (9%), compound topographic index (8%), substrate (6%), and landscape dissection (6%). Phylogeny explained ~75% of the variation in the filed collected foliar N data, suggesting that phylogeny largely underpins the response to the environmental factors. Taken together, these data suggest that a large fraction of the variance in canopy N across the landscape is proximately driven by species composition, though ultimately this is likely a response to abiotic factors such as climate and topography. Future work should focus on the mechanisms and feedbacks involved, and how shifts in climate may translate to changes in forest function.

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