EcoFoG Papers -- Query Results

	EcoFoG Papers Home \| Show All \| Simple Search \| Advanced Search	Login Quick Search: Field: contains: ...
	111–120 of 934 records found matching your query (RSS):

Search & Display Options

Select All Deselect All

[1–10] << 11 12 13 14 15 16 17 18 19 20 >> [21–30]

List View

Citations

Details

	Records
	Author	Orivel, J.; Corbara, B.; Dejean, A.
	Title	Constraints and adaptation in the arboreal life of ants			Type	Journal Article
	Year	2010	Publication	Biofutur	Abbreviated Journal	Biofutur
	Volume	315	Issue		Pages	34-37
	Keywords
	Abstract
	Address	[Orivel, Jerome] CNRS, UMR Ecol Forets Guyane, Kourou 97379, French Guiana
	Corporate Author				Thesis
	Publisher	ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0294-3506	ISBN		Medium
	Area		Expedition		Conference
	Notes	ISI:000284987300004			Approved	no
	Call Number	EcoFoG @ eric.marcon @			Serial	17
Permanent link to this record



	Author	Leroy, C.; Cereghino, R.; Camas, J.F.; Pelozuelo, L.; Dejean, A.; Corbara, B.
	Title	Several aspects of the life of vascular epiphytes			Type	Journal Article
	Year	2010	Publication	Biofutur	Abbreviated Journal	Biofutur
	Volume	315	Issue		Pages	38-41
	Keywords
	Abstract
	Address	[Leroy, Celine] CNRS, UMR Ecol Forets Guyane, Kourou 97379, French Guiana
	Corporate Author				Thesis
	Publisher	ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0294-3506	ISBN		Medium
	Area		Expedition		Conference
	Notes	ISI:000284987300005			Approved	no
	Call Number	EcoFoG @ eric.marcon @			Serial	18
Permanent link to this record



	Author	Van Langenhove, L.; Verryckt, L.T.; Bréchet, L.; Courtois, E.A.; Stahl, C.; Hofhansl, F.; Bauters, M.; Sardans, J.; Boeckx, P.; Fransen, E.; Peñuelas, J.; Janssens, I.A.
	Title	Atmospheric deposition of elements and its relevance for nutrient budgets of tropical forests			Type	Journal Article
	Year	2020	Publication	Biogeochemistry	Abbreviated Journal	Biogeochemistry
	Volume	149	Issue	2	Pages	175-193
	Keywords	Litterfall; Nitrogen; Nutrient cycling; Phosphorus; Potassium; Throughfall; atmospheric deposition; canopy exchange; field method; forest floor; leaching; litterfall; nutrient cycling; phosphorus; potassium; precipitation (climatology); rainforest; tropical forest; French Guiana
	Abstract	Atmospheric deposition is an important component of the nutrient cycles of terrestrial ecosystems, but field measurements are especially scarce in tropical regions. In this study we analysed 15 months of precipitation chemistry collected in an old growth tropical forest located in French Guiana. We measured nutrient inputs via bulk precipitation and throughfall and used the canopy budget model to estimate nutrient fluxes via canopy exchange and dry deposition. Based on this method we quantified net fluxes of macronutrients and compared their contribution to internal cycling rates via litterfall. Our results suggest that while atmospheric deposition of nitrogen was relatively high (13 kg ha−1 year−1), and mainly in organic forms, the N inputs via litterfall were an order of magnitude higher. In contrast to nitrogen, we found that atmospheric deposition of phosphorus (0.5 kg ha−1 year−1) supplied up to one third of the annual litterfall input to the forest floor. Most strikingly, combined annual inputs of potassium via atmospheric deposition (14 kg ha−1 year−1) and canopy leaching (22 kg ha−1 year−1) were three times larger than internal nutrient recycling via litterfall (11 kg ha−1 year−1). We conclude that atmospheric deposition of phosphorus and especially potassium may play an important role in sustaining the productivity of this old-growth tropical rainforest. © 2020, Springer Nature Switzerland AG.
	Address	StatUa Center for Statistics, University of Antwerp, Prinsstraat 13, Antwerp, 2000, Belgium
	Corporate Author				Thesis
	Publisher	Springer	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	01682563 (Issn)	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	964
Permanent link to this record



	Author	Quesada, C.A.; Lloyd, J.; Schwarz, M.; Patino, S.; Baker, T.R.; Czimczik, C.; Fyllas, N.M.; Martinelli, L.; Nardoto, G.B.; Schmerler, J.; Santos, A.J.B.; Hodnett, M.G.; Herrera, R.; Luizao, F.J.; Arneth, A.; Lloyd, G.; Dezzeo, N.; Hilke, I.; Kuhlmann, I.; Raessler, M.; Brand, W.A.; Geilmann, H.; Moraes, J.O.; Carvalho, F.P.; Araujo, R.N.; Chaves, J.E.; Cruz, O.F.; Pimentel, T.P.; Paiva, R.
	Title	Variations in chemical and physical properties of Amazon forest soils in relation to their genesis			Type	Journal Article
	Year	2010	Publication	Biogeosciences	Abbreviated Journal	Biogeosciences
	Volume	7	Issue	5	Pages	1515-1541
	Keywords
	Abstract	Soil samples were collected in six South American countries in a total of 71 different 1 ha forest plots across the Amazon Basin as part of the RAINFOR project. They were analysed for total and exchangeable cations, C, N, pH with various P fractions also determined. Physical properties were also examined and an index of soil physical quality proposed. A diverse range of soils was found. For the western areas near the Andean cordillera and the southern and northern fringes, soils tend to be distributed among the lower pedogenetic levels, while the central and eastern areas of Amazonia have more intensely weathered soils. This gives rise to a large variation of soil chemical and physical properties across the Basin, with soil properties varying predictably along a gradient of pedogenic development. Nutrient pools generally increased slightly in concentration from the youngest to the intermediate aged soils after which a gradual decline was observed with the lowest values found in the most weathered soils. Soil physical properties were strongly correlated with soil fertility, with favourable physical properties occurring in highly weathered and nutrient depleted soils and with the least weathered, more fertile soils having higher incidence of limiting physical properties. Soil phosphorus concentrations varied markedly in accordance with weathering extent and appear to exert an important influence on the nitrogen cycle of Amazon forest soils.
	Address	[Quesada, C. A.; Lloyd, J.; Baker, T. R.; Fyllas, N. M.] Univ Leeds, Sch Geog, Earth & Biosphere Inst, Leeds LS2 9JT, W Yorkshire, England, Email: betoquesada@yahoo.com.br
	Corporate Author				Thesis
	Publisher	COPERNICUS GESELLSCHAFT MBH	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1726-4170	ISBN		Medium
	Area		Expedition		Conference
	Notes	ISI:000278184500011			Approved	no
	Call Number	EcoFoG @ eric.marcon @			Serial	58
Permanent link to this record



	Author	Chave, J.; Navarrete, D.; Almeida, S.; Alvarez, E.; Aragao, L.E.O.C.; Bonal, D.; Chatelet, P.; Silva-Espejo, J.E.; Goret, J.Y.; von Hildebrand, P.; Jimenez, E.; Patino, S.; Penuela, M.C.; Phillips, O.L.; Stevenson, P.; Malhi, Y.
	Title	Regional and seasonal patterns of litterfall in tropical South America			Type	Journal Article
	Year	2010	Publication	Biogeosciences	Abbreviated Journal	Biogeosciences
	Volume	7	Issue	1	Pages	43-55
	Keywords
	Abstract	The production of aboveground soft tissue represents an important share of total net primary production in tropical rain forests. Here we draw from a large number of published and unpublished datasets (n=81 sites) to assess the determinants of litterfall variation across South American tropical forests. We show that across old-growth tropical rainforests, litterfall averages 8.61 +/- 1.91 Mg ha(-1) yr(-1) (mean +/- standard deviation, in dry mass units). Secondary forests have a lower annual litterfall than old-growth tropical forests with a mean of 8.01 +/- 3.41 Mg ha(-1) yr(-1). Annual litterfall shows no significant variation with total annual rainfall, either globally or within forest types. It does not vary consistently with soil type, except in the poorest soils (white sand soils), where litterfall is significantly lower than in other soil types (5.42 +/- 1.91 Mg ha(-1) yr(-1)). We also study the determinants of litterfall seasonality, and find that it does not depend on annual rainfall or on soil type. However, litterfall seasonality is significantly positively correlated with rainfall seasonality. Finally, we assess how much carbon is stored in reproductive organs relative to photosynthetic organs. Mean leaf fall is 5.74 +/- 1.83 Mg ha(-1) yr(-1) (71% of total litterfall). Mean allocation into reproductive organs is 0.69 +/- 0.40 Mg ha(-1) yr(-1) (9% of total litterfall). The investment into reproductive organs divided by leaf litterfall increases with soil fertility, suggesting that on poor soils, the allocation to photosynthetic organs is prioritized over that to reproduction. Finally, we discuss the ecological and biogeochemical implications of these results.
	Address	[Chave, J.] CNRS UPS, Lab Evolut & Divers Biol, UMR 5174, Toulouse, France, Email: chave@cict.fr
	Corporate Author				Thesis
	Publisher	COPERNICUS GESELLSCHAFT MBH	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1726-4170	ISBN		Medium
	Area		Expedition		Conference
	Notes	ISI:000274058100004			Approved	no
	Call Number	EcoFoG @ eric.marcon @			Serial	70
Permanent link to this record



	Author	Fyllas, N.M.; Patino, S.; Baker, T.R.; Nardoto, G.B.; Martinelli, L.A.; Quesada, C.A.; Paiva, R.; Schwarz, M.; Horna, V.; Mercado, L.M.; Santos, A.; Arroyo, L.; Jimenez, E.M.; Luizao, F.J.; Neill, D.A.; Silva, N.; Prieto, A.; Rudas, A.; Silviera, M.; Vieira, I.C.G.; Lopez-Gonzalez, G.; Malhi, Y.; Phillips, O.L.; Lloyd, J.
	Title	Basin-wide variations in foliar properties of Amazonian forest: phylogeny, soils and climate			Type	Journal Article
	Year	2009	Publication	Biogeosciences	Abbreviated Journal	Biogeosciences
	Volume	6	Issue	11	Pages	2677-2708
	Keywords
	Abstract	We analysed 1040 individual trees, located in 62 plots across the Amazon Basin for leaf mass per unit area (M-A), foliar carbon isotopic composition (delta C-13) and leaf level concentrations of C, N, P, Ca, Mg, K and Al. All trees were identified to the species level with the dataset containing 58 families, 236 genera and 508 species, distributed across a wide range of soil types and precipitation regimes. Some foliar characteristics such as M-A, [C], [N] and [Mg] emerge as highly constrained by the taxonomic affiliation of tree species, but with others such as [P], [K], [Ca] and delta C-13 also strongly influenced by site growing conditions. By removing the environmental contribution to trait variation, we find that intrinsic values of most trait pairs coordinate, although different species ( characterised by different trait suites) are found at discrete locations along a common axis of coordination. Species that tend to occupy higher fertility soils are characterised by a lower M-A and have a higher intrinsic [N], [P], [K], [Mg] and delta C-13 than their lower fertility counterparts. Despite this consistency, different scaling patterns were observed between low and high fertility sites. Inter-relationships are thus substantially modified by growth environment. Analysing the environmental component of trait variation, we found soil fertility to be the most important predictor, influencing all leaf nutrient concentrations and delta C-13 and reducing M-A. Mean annual temperature was negatively associated with leaf level [N], [P] and [K] concentrations. Total annual precipitation positively influences M-A, [C] and delta C-13, but with a negative impact on [Mg]. These results provide a first basis for understanding the relationship between the physiological functioning and distribution of tree species across Amazonia.
	Address	[Fyllas, N. M.; Baker, T. R.; Quesada, C. A.; Lopez-Gonzalez, G.; Phillips, O. L.; Lloyd, J.] Univ Leeds, Sch Geog, Earth & Biosphere Inst, Leeds LS2 9JT, W Yorkshire, England, Email: n.fyllas@leeds.ac.uk
	Corporate Author				Thesis
	Publisher	COPERNICUS PUBLICATIONS	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1726-4170	ISBN		Medium
	Area		Expedition		Conference
	Notes	ISI:000272232200025			Approved	no
	Call Number	EcoFoG @ eric.marcon @			Serial	92
Permanent link to this record



	Author	Patino, S.; Lloyd, J.; Paiva, R.; Baker, T.R.; Quesada, C.A.; Mercado, L.M.; Schmerler, J.; Schwarz, M.; Santos, A.J.B.; Aguilar, A.; Czimczik, C.I.; Gallo, J.; Horna, V.; Hoyos, E.J.; Jimenez, E.M.; Palomino, W.; Peacock, J.; Pena-Cruz, A.; Sarmiento, C.; Sota, A.; Turriago, J.D.; Villanueva, B.; Vitzthum, P.; Alvarez, E.; Arroyo, L.; Baraloto, C.; Bonal, D.; Chave, J.; Costa, A.C.L.; Herrera, R.; Higuchi, N.; Killeen, T.; Leal, E.; Luizao, F.; Meir, P.; Monteagudo, A.; Neil, D.; Nunez-Vargas, P.; Penuela, M.C.; Pitman, N.; Priante, N.; Prieto, A.; Panfil, S.N.; Rudas, A.; Salomao, R.; Silva, N.; Silveira, M.; deAlmeida, S.S.; Torres-Lezama, A.; Vasquez-Martinez, R.; Vieira, I.; Malhi, Y.; Phillips, O.L.
	Title	Branch xylem density variations across the Amazon Basin			Type	Journal Article
	Year	2009	Publication	Biogeosciences	Abbreviated Journal	Biogeosciences
	Volume	6	Issue	4	Pages	545-568
	Keywords
	Abstract	Xylem density is a physical property of wood that varies between individuals, species and environments. It reflects the physiological strategies of trees that lead to growth, survival and reproduction. Measurements of branch xylem density, rho(x), were made for 1653 trees representing 598 species, sampled from 87 sites across the Amazon basin. Measured values ranged from 218 kg m(-3) for a Cordia sagotii (Boraginaceae) from Mountagne de Tortue, French Guiana to 1130 kg m(-3) for an Aiouea sp. (Lauraceae) from Caxiuana, Central Para, Brazil. Analysis of variance showed significant differences in average rho(x) across regions and sampled plots as well as significant differences between families, genera and species. A partitioning of the total variance in the dataset showed that species identity (family, genera and species) accounted for 33% with environment (geographic location and plot) accounting for an additional 26%; the remaining “residual” variance accounted for 41% of the total variance. Variations in plot means, were, however, not only accountable by differences in species composition because xylem density of the most widely distributed species in our dataset varied systematically from plot to plot. Thus, as well as having a genetic component, branch xylem density is a plastic trait that, for any given species, varies according to where the tree is growing in a predictable manner. Within the analysed taxa, exceptions to this general rule seem to be pioneer species belonging for example to the Urticaceae whose branch xylem density is more constrained than most species sampled in this study. These patterns of variation of branch xylem density across Amazonia suggest a large functional diversity amongst Amazonian trees which is not well understood.
	Address	[Patino, S.; Aguilar, A.; Jimenez, E. M.; Vitzthum, P.; Penuela, M. C.] Univ Nacl Colombia, Inst Amazonico Invest Imani, Grp Ecol Ecosistemas Terrestres Trop, Leticia, Amazonas, Colombia, Email: sanpatiga@gmail.com
	Corporate Author				Thesis
	Publisher	COPERNICUS PUBLICATIONS	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1726-4170	ISBN		Medium
	Area		Expedition		Conference
	Notes	ISI:000265743200004			Approved	no
	Call Number	EcoFoG @ eric.marcon @			Serial	115
Permanent link to this record



	Author	Wagner, F.; Rossi, V.; Stahl, C.; Bonal, D.; Herault, B.
	Title	Asynchronism in leaf and wood production in tropical forests: A study combining satellite and ground-based measurements			Type	Journal Article
	Year	2013	Publication	Biogeosciences	Abbreviated Journal	Biogeosciences
	Volume	10	Issue	11	Pages	7307-7321
	Keywords
	Abstract	The fixation of carbon in tropical forests mainly occurs through the production of wood and leaves, both being the principal components of net primary production. Currently field and satellite observations are independently used to describe the forest carbon cycle, but the link between satellite-derived forest phenology and field-derived forest productivity remains opaque. We used a unique combination of a MODIS enhanced vegetation index (EVI) dataset, a wood production model based on climate data and direct litterfall observations at an intra-annual timescale in order to question the synchronism of leaf and wood production in tropical forests. Even though leaf and wood biomass fluxes had the same range (respectively 2.4 ± 1.4 and 2.2 ± 0.4 Mg C ha-1 yr-1), they occurred separately in time. EVI increased with leaf renewal at the beginning of the dry season, when solar irradiance was at its maximum. At this time, wood production stopped. At the onset of the rainy season, when new leaves were fully mature and water available again, wood production quickly increased to reach its maximum in less than a month, reflecting a change in carbon allocation from short-lived pools (leaves) to long-lived pools (wood). The time lag between peaks of EVI and wood production (109 days) revealed a substantial decoupling between the leaf renewal assumed to be driven by irradiance and the water-driven wood production. Our work is a first attempt to link EVI data, wood production and leaf phenology at a seasonal timescale in a tropical evergreen rainforest and pave the way to develop more sophisticated global carbon cycle models in tropical forests. © 2013 Author(s).
	Address	INRA, UMR EEF 1137, 54280 Champenoux, France
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	17264170 (Issn)	ISBN		Medium
	Area		Expedition		Conference
	Notes	Export Date: 2 December 2013; Source: Scopus; doi: 10.5194/bg-10-7307-2013; Language of Original Document: English; Correspondence Address: Wagner, F.; CIRAD, UMR Ecologie des Forêts de Guyane, Kourou, French Guiana, French Guiana; email: wagner.h.fabien@gmail.com; References: Allen, R., Smith, M., Pereira, L., Perrier, A., An update for the calculation of reference evapotranspiration (1994) Journal of the ICID, 43, pp. 35-92; Anderson, L.O., Biome-scale forest properties in Amazonia based on field and satellite observations (2012) Remote Sens., 4, pp. 1245-1271. , doi:10.3390/rs4051245; Arias, P.A., Fu, R., Hoyos, C.D., Li, W., Zhou, L., Changes in cloudiness over the Amazon rainforests during the last two decades: Diagnostic and potential causes (2011) Clim. Dynam., 37, pp. 1151-1164. , doi:10.1007/s00382-010-0903-2; Asner, G., Townsend, A., Braswell, B., Satellite observation of El Nino effects on Amazon forest phenology and productivity (2000) Geophys. Res. Lett., 27, pp. 981-984. , doi:10.1029/1999GL011113; Asner, G.P., Nepstad, D., Cardinot, G., Ray, D., Drought stress and carbon uptake in an Amazon forest measured with spaceborne imaging spectroscopy (2004) Proceedings of the National Academy of Sciences of the United States of America, 101 (16), pp. 6039-6044. , DOI 10.1073/pnas.0400168101; Baccini, A., Goetz, S.J., Walker, W.S., Laporte, N.T., Sun, M., Sulla-Menashe, D., Hackler, J., Houghton, R.A., Estimated carbon dioxide emissions from tropical deforestation improved by carbon-density maps (2012) Nat. Clim. Change, 2, pp. 182-185. , doi:10.1038/NCLIMATE1354; Baker, T.R., Burslem, D.F.R.P., Swaine, M.D., Associations between tree growth, soil fertility and water availability at local and regional scales in Ghanaian tropical rain forest (2003) Journal of Tropical Ecology, 19 (2), pp. 109-125. , DOI 10.1017/S0266467403003146; Baraloto, C., Paine, C.E.T., Poorter, L., Beauchene, J., Bonal, D., Domenach, A.-M., Herault, B., Chave, J., Decoupled leaf and stem economics in rain forest trees (2010) Ecol. Lett., 13, pp. 1338-1347. , doi:10.1111/j.1461- 0248.2010.01517.x; Barnett, A., Dobson, A., (2010) Analysing Seasonal Health Data, , Springer; Bonal, D., Bosc, A., Ponton, S., Goret, J.-Y., Burban, B.T., Gross, P., Bonnefond, J.-M., Granier, A., Impact of severe dry season on net ecosystem exchange in the Neotropical rainforest of French Guiana (2008) Global Change Biology, 14 (8), pp. 1917-1933. , DOI 10.1111/j.1365-2486.2008.01610.x; Bradley, A.V., Gerard, F.F., Barbier, N., Weedon, G.P., Anderson, L.O., Huntingford, C., Aragao, L.E.O.C., Arai, E., Relationships between phenology, radiation and precipitation in the Amazon region (2011) Glob. Change Biol., 17, pp. 2245-2260. , doi:10.1111/j.1365-2486.2011.02405.x; Brando, P.M., Goetz, S.J., Baccini, A., Nepstad, D.C., Beck, P.S.A., Christman, M.C., Seasonal and interannual variability of climate and vegetation indices across the Amazon (2010) P. Natl. Acad. Sci. USA, 107, pp. 14685-14690. , doi:10.1073/pnas.0908741107; Caldararu, S., Palmer, P.I., Purves, D.W., Inferring Amazon leaf demography from satellite observations of leaf area index (2012) Biogeosciences, 9, pp. 1389-1404. , doi:10.5194/bg-9-1389-2012; Chambers, J.Q., Silver, W.L., Some aspects of ecophysiological and biogeochemical responses of tropical forests to atmospheric change (2004) Philosophical Transactions of the Royal Society B: Biological Sciences, 359 (1443), pp. 463-476. , DOI 10.1098/rstb.2003.1424; Chave, J., Navarrete, D., Almeida, S., Álvarez, E., Aragão, L.E.O.C., Bonal, D., Châtelet, P., Malhi, Y., Regional and seasonal patterns of litterfall in tropical South America (2010) Biogeosciences, 7, pp. 43-55. , doi:10.5194/bg-7-43-2010; Clark, D.B., Clark, D.A., Oberbauer, S.F., Annual wood production in a tropical rain forest in NE Costa Rica linked to climatic variation but not to increasing CO2 (2010) Glob. Change Biol., 16, pp. 747-759. , doi:10.1111/j.1365-2486.2009.02004.x; Delegido, J., Vergara, C., Verrelst, J., Gandia, S., Moreno, J., Remote estimation of crop chlorophyll content by means of highspectral- resolution reflectance techniques (2011) Agron. J., 103, pp. 1834-1842. , doi:10.2134/agronj2011.0101; De Weirdt, M., Verbeeck, H., Maignan, F., Peylin, P., Poulter, B., Bonal, D., Ciais, P., Steppe, K., Seasonal leaf dynamics for tropical evergreen forests in a process-based global ecosystem model (2012) Geosci. Model Dev., 5, pp. 1091-1108. , doi:10.5194/gmd-5-1091-2012; Doughty, C.E., An in situ leaf and branch warming experiment in the amazon (2011) Biotropica, 43, pp. 658-665. , doi:10.1111/j.1744- 7429.2010.00746.x; Doughty, C.E., Goulden, M.L., Are tropical forests near a high temperature threshold? (2008) J. Geophys. Res.-Biogeo., 113, pp. G00B07. , doi:10.1029/2007JG000632; Ekstrom, M., Jones, P.D., Fowler, H.J., Lenderink, G., Buishand, T.A., Conway, D., Regional climate model data used within the SWURVE project projected changes in seasonal patterns and estimation of PET (2007) Hydrology and Earth System Sciences, 11 (3), pp. 1069-1083; Enquist, B.J., Leffler, A.J., Long-term tree ring chronologies from sympatric tropical dry-forest trees: Individualistic responses to climatic variation (2001) Journal of Tropical Ecology, 17 (1), pp. 41-60. , DOI 10.1017/S0266467401001031; (2008) ESA SP-1313/4 Candidate Earth Explorer Core Missions – Reports for Assessment: FLEX – FLuorescence Explorer, , http://esamultimedia.esa.int/docs/SP1313-4_FLEX.pdf, European Space Agency, Tech. rep., published by ESA Communication Production Office, Noordwijk, The Netherlands; Fichtler, E., Clark, D.A., Worbes, M., Age and Long-term Growth of Trees in an Old-growth Tropical Rain Forest, Based on Analyses of Tree Rings and 14C (2003) Biotropica, 35 (3), pp. 306-317; Figueira, A., Miller, S., De Sousa, C., Menton, M., Maia, A., Da Rocha, H., Goulden, M., (2011) LBA-ECO CD-04 Dendrometry, Km 83 Tower Site, , http://daac.ornl.gov, Tapajos National Forest, Brazil, Data set, Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, USA, doi:10.3334/ORNLDAAC/989; Galvao, L.S., Breunig, F.M., Dos Santos, J.R., De Moura, Y.M., View-illumination effects on hyperspectral vegetation indices in the Amazonian tropical forest (2013) Int. J. Appl. Earth Obs., 21, pp. 291-300. , doi:10.1016/j.jag.2012.07.005; Gao, X., Huete, A.R., Ni, W., Miura, T., Optical-biophysical relationships of vegetation spectra without background contamination (2000) Remote Sensing of Environment, 74 (3), pp. 609-620. , DOI 10.1016/S0034-4257(00)00150-4, PII S0034425700001504; Gond, V., Freycon, V., Molino, J.-F., Brunaux, O., Ingrassia, F., Joubert, P., Pekel, J.-F., Sabatier, D., Broad-scale spatial pattern of forest landscape types in the Guiana Shield (2011) Int. J. Appl. Earth Obs., 13, pp. 357-367. , doi:10.1016/j.jag.2011.01.004; Gourlet-Fleury, S., Guehl, J.M., Laroussinie, O., (2004) Ecology and Management of A Neotropical Rainforest – Lessons Drawn from Paracou, A Long-term Experimental Research Site in French Guiana, , Elsevier; Graham, E.A., Mulkey, S.S., Kitajima, K., Phillips, N.G., Wright, S.J., Cloud cover limits net CO2 uptake and growth of a rainforest tree during tropical rainy seasons (2003) Proceedings of the National Academy of Sciences of the United States of America, 100 (2), pp. 572-576. , DOI 10.1073/pnas.0133045100; Grogan, J., Schulze, M., The impact of annual and seasonal rainfall patterns on growth and phenology of emergent tree species in Southeastern Amazonia, Brazil (2012) Biotropica, 44, pp. 331-340. , doi:10.1111/j.1744-7429.2011.00825.x; Harris, P.P., Huntingford, C., Cox, P.M., Amazon Basin climate under global warming: The role of the sea surface temperature (2008) Philosophical Transactions of the Royal Society B: Biological Sciences, 363 (1498), pp. 1753-1759. , DOI 10.1098/rstb.2007.0037, PII M322R63897015H77; Huete, A., Didan, K., Miura, T., Rodriguez, E.P., Gao, X., Ferreira, L.G., Overview of the radiometric and biophysical performance of the MODIS vegetation indices (2002) Remote Sensing of Environment, 83 (1-2), pp. 195-213. , DOI 10.1016/S0034-4257(02)00096-2, PII S0034425702000962; Huete, A.R., Didan, K., Shimabukuro, Y.E., Ratana, P., Saleska, S.R., Hutyra, L.R., Yang, W.Z., Myneni, R., Amazon rainforests green-up with sunlight in dry season (2006) Geophys. Res. Lett., 33, pp. L06405. , doi:10.1029/2005GL025583; Hutyra, L.R., Munger, J.W., Saleska, S.R., Gottlieb, E., Daube, B.C., Dunn, A.L., Amaral, D.F., Wofsy, S.C., Seasonal controls on the exchange of carbon and water in an Amazonian rain forest (2007) Journal of Geophysical Research G: Biogeosciences, 112 (3), pp. G03008. , DOI 10.1029/2006JG000365; Janzen, D., Wilson, D., The cost of being dormant in the tropics (1974) Biotropica, 6, pp. 260-262; Justice, C.O., Vermote, E., Townshend, J.R.G., Defries, R., Roy, D.P., Hall, D.K., Salomonson, V.V., Barnsley, M.J., The moderate resolution imaging spectroradiometer (MODIS): Land remote sensing for global change research (1998) IEEE Transactions on Geoscience and Remote Sensing, 36 (4), pp. 1228-1249. , PII S0196289298047512; Kozlowski, T., Carbohydrate sources and sinks in woody-plants (1992) Bot. Rev., 58, pp. 107-222. , doi:10.1007/BF02858600; Krepkowski, J., Bräuning, A., Gebrekirstos, A., Strobl, S., Cambial growth dynamics and climatic control of different tree life forms in tropical mountain forest in Ethiopia (2011) Trees, 25, pp. 59-70. , doi:10.1007/s00468-010-0460-7; Lewis, S.L., Malhi, Y., Phillips, O.L., Fingerprinting the impacts of global change on tropical forests (2004) Philosophical Transactions of the Royal Society B: Biological Sciences, 359 (1443), pp. 437-462. , DOI 10.1098/rstb.2003.1432; Lisi, C.S., Tomazello Fo., M., Botosso, P.C., Roig, F.A., Maria, V.R.B., Ferreira-Fedele, L., Voigt, A.R.A., Tree-ring formation, radial increment periodicity, and phenology of tree species from a seasonal semi-deciduous forest in southeast Brazil (2008) IAWA Journal, 29 (2), pp. 189-207; Lloyd, J., Farquhar, G.D., Effects of rising temperatures and [CO2] on the physiology of tropical forest trees (2008) Philosophical Transactions of the Royal Society B: Biological Sciences, 363 (1498), pp. 1811-1817. , DOI 10.1098/rstb.2007.0032, PII C14L2U757H282731; Da Costa Lola, A.C., Galbraith, D., Almeida, S., Tanaka Portela, B.T., Da Costa, M., De Athaydes Silva Jr., J., Braga, A.P., Meir, P., Effect of 7 yr of experimental drought on vegetation dynamics and biomass storage of an eastern Amazonian rainforest (2010) New Phytol., 187, pp. 579-591. , doi:10.1111/j.1469-8137.2010.03309.x; Loubry, D., Phenology of deciduous trees in a French-Guianan forest (5 degrees latitude North) – Case of a determinism with endogenous and exogenous components (1994) Can. J. Bot., 72, pp. 1843-1857; Malhi, Y., Grace, J., Tropical forests and atmospheric carbon dioxide (2000) Trends in Ecology and Evolution, 15 (8), pp. 332-337. , DOI 10.1016/S0169-5347(00)01906-6, PII S0169534700019066; Malhi, Y., Aragao, L.E.O.C., Galbraith, D., Huntingford, C., Fisher, R., Zelazowski, P., Sitch, S., Meir, P., Exploring the likelihood and mechanism of a climatechange- induced dieback of the Amazon rainforest (2009) P. Natl. Acad. Sci. USA, 106, pp. 20610-20615. , doi:10.1073/pnas.0804619106; Malhi, Y., Doughty, C., Galbraith, D., The allocation of ecosystem net primary productivity in tropical forests (2011) Philos. T. R. Soc. B, 366, pp. 3225-3245. , doi:10.1098/rstb.2011.0062; Meroni, M., Busetto, L., Colombo, R., Guanter, L., Moreno, J., Verhoef, W., Performance of spectral fitting methods for vegetation fluorescence quantification (2010) Remote Sens. Environ., 114, pp. 363-374. , doi:10.1016/j.rse.2009.09.010; Michelot, A., Simard, S., Rathgeber, C., Dufrene, E., Damesin, C., Comparing the intra-annual wood formation of three European species (Fagus sylvatica, Quercus petraea and Pinus sylvestris) as related to leaf phenology and nonstructural carbohydrate dynamics (2012) Tree Physiol., 32, pp. 1033-1045. , doi:10.1093/treephys/tps052; Mitchell, T.D., Jones, P.D., An improved method of constructing a database of monthly climate observations and associated high-resolution grids (2005) International Journal of Climatology, 25 (6), pp. 693-712. , DOI 10.1002/joc.1181; Molto, Q., Rossi, V., Blanc, L., Error propagation in biomass estimation in tropical forests (2013) Meth. Ecol. Evolut., 4, pp. 175-183. , doi:10.1111/j.2041-210x.2012.00266.x; Moura, Y.M., Galvao, L.S., Dos Santos, J.R., Roberts, D.A., Breunig, F.M., Use of MISR/Terra data to study intra- and interannual EVI variations in the dry season of tropical forest (2012) Remote Sens. Environ., 127, pp. 260-270. , doi:10.1016/j.rse.2012.09.013; Myneni, R.B., Hall, F.G., Sellers, P.J., Marshak, A.L., The meaning of spectral vegetation indices (1995) IEEE T. Geosci. Remote, 33, pp. 481-486; Myneni, R.B., Yang, W., Nemani, R.R., Huete, A.R., Dickinson, R.E., Knyazikhin, Y., Didan, K., Salomonson, V.V., Large seasonal swings in leaf area of Amazon rainforests (2007) Proceedings of the National Academy of Sciences of the United States of America, 104 (12), pp. 4820-4823. , DOI 10.1073/pnas.0611338104; Nath, C.D., Dattaraja, H.S., Suresh, H.S., Joshi, N.V., Sukumar, R., Patterns of tree growth in relation to environmental variability in the tropical dry deciduous forest at Mudumalai, southern India (2006) Journal of Biosciences, 31 (5), pp. 651-669. , http://www.ias.ac.in/jbiosci/dec2006/651-669.pdf, DOI 10.1007/BF02708418; Nemani, R.R., Keeling, C.D., Hashimoto, H., Jolly, W.M., Piper, S.C., Tucker, C.J., Myneni, R.B., Running, S.W., Climate-driven increases in global terrestrial net primary production from 1982 to 1999 (2003) Science, 300 (5625), pp. 1560-1563. , DOI 10.1126/science.1082750; Nepstad, D., Moutinho, P., Dias, M., Davidson, E., Cardinot, G., Markewitz, D., Figueiredo, R., Schwalbe, K., The effects of partial throughfall exclusion on canopy processes, aboveground production, and biogeochemistry of an Amazon forest (2002) J. Geophys. Res.-Atmos., 107, p. 8085. , doi:10.1029/2001JD000360; O'Brien, J.J., Oberbauer, S.F., Clark, D.B., Clark, D.A., Phenology and stem diameter increment seasonality in a Costa Rican wet tropical forest (2008) Biotropica, 40 (2), pp. 151-159. , DOI 10.1111/j.1744-7429.2007.00354.x; Pan, Y., Birdsey, R.A., Fang, J., Houghton, R., Kauppi, P.E., Kurz, W.A., Phillips, O.L., Hayes, D., A large and persistent carbon sink in the world's forests (2011) Science, 333, pp. 988-993. , doi:10.1126/science.1201609; Pennec, A., Gond, V., Sabatier, D., Tropical forest phenology in French Guiana from MODIS time series (2011) Remote Sens. Lett., 2, pp. 337-345; Phillips, O.L., Aragao, L.E.O.C., Lewis, S.L., Fisher, J.B., Lloyd, J., Lopez-Gonzalez, G., Malhi, Y., Torres-Lezama, A., Drought sensitivity of the Amazon rainforest (2009) Science, 323, pp. 1344-1347. , doi:10.1126/science.1164033; Poorter, L., Kitajima, K., Carbohydrate storage and light requirements of tropical moist and dry forest tree species (2007) Ecology, 88 (4), pp. 1000-1011. , http://www.esajournals.org/pdfserv/i0012-9658-088-04-1000.pdf, DOI 10.1890/06-0984; Rice, A.H., Pyle, E.H., Saleska, S.R., Hutyra, L., Palace, M., Keller, M., De Camargo, P.B., Wofsy, S.C., Carbon balance and vegetation dynamics in an old-growth Amazonian forest (2004) Ecological Applications, 14 (4 SUPPL.), pp. S55-S71; Richardson, A.D., Carbone, M.S., Keenan, T.F., Czimczik, C.I., Hollinger, D.Y., Murakami, P., Schaberg, P.G., Xu, X., Seasonal dynamics and age of stemwood nonstructural carbohydrates in temperate forest trees (2013) New Phytol., 197, pp. 850-861. , doi:10.1111/nph.12042; Rocha, A.V., Tracking carbon within the trees (2013) New Phytol., 197, pp. 685-686. , doi:10.1111/nph.12095; Rutishauser, E., Wagner, F., Herault, B., Nicolini, E.-A., Blanc, L., Contrasting above-ground biomass balance in a neotropical rain forest (2010) J. Veg. Sci., 21, pp. 672-682. , doi:10.1111/j.1654-1103.2010.01175.x; Rowland, L., Hill, T.C., Stahl, C., Siebicke, L., Burban, B., Zaragoza-Castells, J., Ponton, S., Williams, M., Evidence for strong seasonality in the carbon storage and carbon use efficiency of an Amazonian forest (2013) Glob. Change Biol., , doi:10.1111/gcb.12375; Sabatier, D., Puig, H., Phénologie et saisonnalité de la floraison et de la fructification en forêt dense guyanaise (1986) Memoir. Mus. Natl. Hist. A-Zool., 132, pp. 173-184; Sabatier, D., Grimaldi, M., Prevost, M., Guillaume, J., Godron, M., Dosso, M., Curmi, P., The influence of soil cover organization on the floristic and structural heterogeneity of a Guianan rain forest (1997) Plant Ecol., 131, pp. 81-108; Saleska, S.R., Miller, S.D., Matross, D.M., Goulden, M.L., Wofsy, S.C., Da Rocha, H.R., De Camargo, P.B., Silva, H., Carbon in Amazon Forests: Unexpected Seasonal Fluxes and Disturbance-Induced Losses (2003) Science, 302 (5650), pp. 1554-1557. , DOI 10.1126/science.1091165; Saleska, S.R., Didan, K., Huete, A.R., Da Rocha, H.R., Amazon forests green-up during 2005 drought (2007) Science, 318 (5850), p. 612. , DOI 10.1126/science.1146663; Samanta, A., Ganguly, S., Hashimoto, H., Devadiga, S., Vermote, E., Knyazikhin, Y., Nemani, R.R., Myneni, R.B., Amazon forests did not green-up during the 2005 drought (2010) Geophys. Res. Lett., 37, pp. L05401. , doi:10.1029/2009GL042154; Schongart, J., Piedade, M.T.F., Ludwigshausen, S., Horna, V., Worbes, M., Phenology and stem-growth periodicity of tree species in Amazonian floodplain forests (2002) Journal of Tropical Ecology, 18 (4), pp. 581-597. , DOI 10.1017/S0266467402002389; Solano, R., Didan, K., Jacobson, A., Huete, A., (2010) Terrestrial Biophysics and Remote Sensing Lab – The University of Arizona, MODIS Vegetation Indices (MOD13) C5 User's Guide, Version 1.00; Solomon, S., Qin, D., Manning, M., Marquis, M., Averyt, K., Tignor, M.M.H., Leroy Miller, J., Chen, Z., (2007) Climate Change 2007, the Fourth Assessment Report (AR4), Intergovernmental Panel on Climate Change; Solomon, S., Plattner, G.-K., Knutti, R., Friedlingstein, P., Irreversible climate change due to carbon dioxide emissions (2009) P. Natl. Acad. Sci. USA, 106, pp. 1704-1709. , doi:10.1073/pnas.0812721106; Stahl, C., Burban, B., Bompy, F., Jolin, Z.B., Sermage, J., Bonal, D., Seasonal variation in atmospheric relative humidity contributes to explaining seasonal variation in trunk circumference of tropical rain-forest trees in French Guiana (2010) J. Trop. Ecol., 26, pp. 393-405. , doi:10.1017/S0266467410000155; Stahl, C., Burban, B., Wagner, F., Goret, J.-Y., Bompy, F., Bonal, D., Influence of seasonal variations in soil water availability on gas exchange of tropical canopy trees (2013) Biotropica, 45, pp. 155-164; Tian, H., Melillo, J.M., Kicklighter, D.W., David McGuire, A., Helfrich III, J.V.K., Moore III, B., Vorosmarty, C.J., Effect of interannual climate variability on carbon storage in Amazonian ecosystems (1998) Nature, 396 (6712), pp. 664-667. , DOI 10.1038/25328; Verbeeck, H., Peylin, P., Bacour, C., Bonal, D., Steppe, K., Ciais, P., Seasonal patterns of CO2 fluxes in Amazon forests: Fusion of eddy covariance data and the ORCHIDEE model (2011) J. Geophys. Res.-Biogeo., 116, pp. G02018. , doi:10.1029/2010JG001544; Wagner, F., Hérault, B., Stahl, C., Bonal, D., Rossi, V., Modeling water availability for trees in tropical forests (2010) Agr. Forest Meteorol., pp. 1202-1213. , doi:10.1016/j.agrformet.2011.04.012; Wagner, F., Rutishauser, E., Blanc, L., Herault, B., Effects of plot size and census interval on descriptors of forest structure and dynamics (2010) Biotropica, 42, pp. 664-671; Wagner, F., Rossi, V., Stahl, C., Bonal, D., Herault, B., Water availability is the main climate driver of neotropical tree growth (2012) Plos One, 7, pp. e34074. , doi:10.1371/journal.pone.0034074; Worbes, M., Annual growth rings, rainfall-dependent growth and long-term growth patterns of tropical trees from the Caparo Forest Reserve in Venezuela (1999) Journal of Ecology, 87 (3), pp. 391-403. , DOI 10.1046/j.1365-2745.1999.00361.x; Wright, S., Vanschaik, C., Light and the phenology of tropical trees (1994) Am. Nat., 143, pp. 192-199. , doi:10.1086/285600; Wurth, M.K.R., Pelaez-Riedl, S., Wright, S.J., Korner, C., Non-structural carbohydrate pools in a tropical forest (2005) Oecologia, 143 (1), pp. 11-24. , DOI 10.1007/s00442-004-1773-2; Zalamea, M., Gonzalez, G., Leaffall phenology in a subtropical wet forest in Puerto Rico: From species to community patterns (2008) Biotropica, 40 (3), pp. 295-304. , DOI 10.1111/j.1744-7429.2007.00389.x; Zhang, X., Friedl, M.A., Schaaf, C.B., Strahler, A.H., Hodges, J.C.F., Gao, F., Reed, B.C., Huete, A., Monitoring vegetation phenology using MODIS (2003) Remote Sensing of Environment, 84 (3), pp. 471-475. , DOI 10.1016/S0034-4257(02)00135-9, PII S0034425702001359			Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	512
Permanent link to this record



	Author	Molto, Q.; Herault, B.; Boreux, J.-J.; Daullet, M.; Rousteau, A.; Rossi, V.
	Title	Predicting tree heights for biomass estimates in tropical forests -A test from French Guiana			Type	Journal Article
	Year	2014	Publication	Biogeosciences	Abbreviated Journal	Biogeosciences
	Volume	11	Issue	12	Pages	3121-3130
	Keywords
	Abstract	The recent development of REDD+ mechanisms requires reliable estimation of carbon stocks, especially in tropical forests that are particularly threatened by global changes. Even though tree height is a crucial variable for computing aboveground forest biomass (AGB), it is rarely measured in large-scale forest censuses because it requires extra effort. Therefore, tree height has to be predicted with height models. The height and diameter of all trees over 10 cm in diameter were measured in 33 half-hectare plots and 9 one-hectare plots throughout northern French Guiana, an area with substantial climate and environmental gradients. We compared four different model shapes and found that the Michaelis-Menten shape was most appropriate for the tree biomass prediction. Model parameter values were significantly different from one forest plot to another, and this leads to large errors in biomass estimates. Variables from the forest stand structure explained a sufficient part of plot-to-plot variations of the height model parameters to improve the quality of the AGB predictions. In the forest stands dominated by small trees, the trees were found to have rapid height growth for small diameters. In forest stands dominated by larger trees, the trees were found to have the greatest heights for large diameters. The aboveground biomass estimation uncertainty of the forest plots was reduced by the use of the forest structure-based height model. It demonstrated the feasibility and the importance of height modeling in tropical forests for carbon mapping. When the tree heights are not measured in an inventory, they can be predicted with a height-diameter model and incorporating forest structure descriptors may improve the predictions. © Author(s) 2014. CC Attribution 3.0 License.
	Address	Université de Liège, Liège, Belgium
	Corporate Author				Thesis
	Publisher	European Geosciences Union	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	17264189 (Issn)	ISBN		Medium
	Area		Expedition		Conference
	Notes	Export Date: 3 July 2014; Correspondence Address: Molto, Q.; Université des Antilles et de la Guyane, UMR Ecologie des Forêts de Guyane, Kourou, France; email: quentin.molto@gmail.com			Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	550
Permanent link to this record



	Author	Réjou-Méchain, M.; Muller-Landau, H.C.; Detto, M.; Thomas, S.C.; Le Toan, T.; Saatchi, S.S.; Barreto-Silva, J.S.; Bourg, N.A.; Bunyavejchewin, S.; Butt, N.; Brockelman, W.Y.; Cao, M.; Cárdenas, D.; Chiang, J.-M.; Chuyong, G.B.; Clay, K.; Condit, R.; Dattaraja, H.S.; Davies, S.J.; Duque, A.; Esufali, S.; Ewango, C.; Fernando, R.H.S.; Fletcher, C.D.; N. Gunatilleke, I.A.U.; Hao, Z.; Harms, K.E.; Hart, T.B.; Herault, B.; Howe, R.W.; Hubbell, S.P.; Johnson, D.J.; Kenfack, D.; Larson, A.J.; Lin, L.; Lin, Y.; Lutz, J.A.; Makana, J.-R.; Malhi, Y.; Marthews, T.R.; Mcewan, R.W.; Mcmahon, S.M.; Mcshea, W.J.; Muscarella, R.; Nathalang, A.; Noor, N.S.M.; Nytch, C.J.; Oliveira, A.A.; Phillips, R.P.; Pongpattananurak, N.; Punchi-Manage, R.; Salim, R.; Schurman, J.; Sukumar, R.; Suresh, H.S.; Suwanvecho, U.; Thomas, D.W.; Thompson, J.; Uríarte, M.; Valencia, R.; Vicentini, A.; Wolf, A.T.; Yap, S.; Yuan, Z.; Zartman, C.E.; Zimmerman, J.K.; Chave, J.
	Title	Local spatial structure of forest biomass and its consequences for remote sensing of carbon stocks			Type	Journal Article
	Year	2014	Publication	Biogeosciences	Abbreviated Journal	Biogeosciences
	Volume	11	Issue	23	Pages	6827-6840
	Keywords
	Abstract	Advances in forest carbon mapping have the potential to greatly reduce uncertainties in the global carbon budget and to facilitate effective emissions mitigation strategies such as REDD+ (Reducing Emissions from Deforestation and Forest Degradation). Though broad-scale mapping is based primarily on remote sensing data, the accuracy of resulting forest carbon stock estimates depends critically on the quality of field measurements and calibration procedures. The mismatch in spatial scales between field inventory plots and larger pixels of current and planned remote sensing products for forest biomass mapping is of particular concern, as it has the potential to introduce errors, especially if forest biomass shows strong local spatial variation. Here, we used 30 large (8-50 ha) globally distributed permanent forest plots to quantify the spatial variability in aboveground biomass density (AGBD in Mg ha-1) at spatial scales ranging from 5 to 250 m (0.025-6.25 ha), and to evaluate the implications of this variability for calibrating remote sensing products using simulated remote sensing footprints. We found that local spatial variability in AGBD is large for standard plot sizes, averaging 46.3% for replicate 0.1 ha subplots within a single large plot, and 16.6% for 1 ha subplots. AGBD showed weak spatial autocorrelation at distances of 20-400 m, with autocorrelation higher in sites with higher topographic variability and statistically significant in half of the sites. We further show that when field calibration plots are smaller than the remote sensing pixels, the high local spatial variability in AGBD leads to a substantial “dilution” bias in calibration parameters, a bias that cannot be removed with standard statistical methods. Our results suggest that topography should be explicitly accounted for in future sampling strategies and that much care must be taken in designing calibration schemes if remote sensing of forest carbon is to achieve its promise.
	Address	Institute of Biology University of the Philippines DilimanQuezon City, Philippines
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes	Cited By :1; Export Date: 30 January 2015			Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	582
Permanent link to this record