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	Author	Tysklind, N.; Etienne, M.-P.; Scotti-Saintagne, C.; Tinaut, A.; Casalis, M.; Troispoux, V.; Cazal, S.-O.; Brousseau, L.; Ferry, B.; Scotti, I.
	Title	Microgeographic local adaptation and ecotype distributions: The role of selective processes on early life-history traits in sympatric, ecologically divergent Symphonia populations			Type	Journal Article
	Year	2020	Publication	Ecology and Evolution	Abbreviated Journal	Ecology and Evolution
	Volume	10	Issue	19	Pages	10735-10753
	Keywords	determinants of plant community diversity and structure; evolutionary ecology; landscape ecology; local adaptation; Neotropical forest; plant development and life-history traits; reciprocal transplantation experiments; Symphonia
	Abstract	Trees are characterized by the large number of seeds they produce. Although most of those seeds will never germinate, plenty will. Of those which germinate, many die young, and eventually, only a minute fraction will grow to adult stage and reproduce. Is this just a random process? Do variations in germination and survival at very young stages rely on variations in adaptations to microgeographic heterogeneity? and do these processes matter at all in determining tree species distribution and abundance?. We have studied these questions with the Neotropical Symphonia tree species. In the Guiana shield, Symphonia are represented by at least two sympatric taxa or ecotypes, Symphonia globulifera found almost exclusively in bottomlands, and a yet undescribed more generalist taxon/ecotype, Symphonia sp1. A reciprocal transplantation experiment (510 seeds, 16 conditions) was set up and followed over the course of 6 years to evaluate the survival and performance of individuals from different ecotypes and provenances. Germination, survival, growth, and herbivory showed signs of local adaptation, with some combinations of ecotypes and provenances growing faster and surviving better in their own habitat or provenance region. S. globulifera was strongly penalized when planted outside its home habitat but showed the fastest growth rates when planted in its home habitat, suggesting it is a specialist of a high-risk high-gain strategy. Conversely, S. sp1 behaved as a generalist, performing well in a variety of environments. The differential performance of seeds and seedlings in the different habitats matches the known distribution of both ecotypes, indicating that environmental filtering at the very early stages can be a key determinant of tree species distributions, even at the microgeographic level and among very closely related taxa. Furthermore, such differential performance also contributes to explain, in part, the maintenance of the different Symphonia ecotypes living in intimate sympatry despite occasional gene flow. © 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd
	Address	UMR AMAP, IRD, Cirad, CNRS, INRAE, Université Montpellier, Montpellier, France
	Corporate Author				Thesis
	Publisher	John Wiley and Sons Ltd	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	20457758 (Issn)	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	951
Permanent link to this record



	Author	Aubry-Kientz, M.; Rossi, V.; Cornu, G.; Wagner, F.; Herault, B.
	Title	Temperature rising would slow down tropical forest dynamic in the Guiana Shield			Type	Journal Article
	Year	2019	Publication	Scientific Reports	Abbreviated Journal	Sci. Rep.
	Volume	9	Issue		Pages	10235
	Keywords	article; biomass; climate change; controlled study; diagnostic test accuracy study; driver; human; joint; mortality rate; precipitation; prediction; sensitivity analysis; simulation; statistics; tree growth; tropical rain forest; water stress
	Abstract	Increasing evidence shows that the functioning of the tropical forest biome is intimately related to the climate variability with some variables such as annual precipitation, temperature or seasonal water stress identified as key drivers of ecosystem dynamics. How tropical tree communities will respond to the future climate change is hard to predict primarily because several demographic processes act together to shape the forest ecosystem general behavior. To overcome this limitation, we used a joint individual-based model to simulate, over the next century, a tropical forest community experiencing the climate change expected in the Guiana Shield. The model is climate dependent: temperature, precipitation and water stress are used as predictors of the joint growth and mortality rates. We ran simulations for the next century using predictions of the IPCC 5AR, building three different climate scenarios (optimistic RCP2.6, intermediate, pessimistic RCP8.5) and a control (current climate). The basal area, above-ground fresh biomass, quadratic diameter, tree growth and mortality rates were then computed as summary statistics to characterize the resulting forest ecosystem. Whatever the scenario, all ecosystem process and structure variables exhibited decreasing values as compared to the control. A sensitivity analysis identified the temperature as the strongest climate driver of this behavior, highlighting a possible temperature-driven drop of 40% in average forest growth. This conclusion is alarming, as temperature rises have been consensually predicted by all climate scenarios of the IPCC 5AR. Our study highlights the potential slow-down danger that tropical forests will face in the Guiana Shield during the next century. © 2019, The Author(s).
	Address	Institut National Polytechnique Félix Houphouët-Boigny (INP-HB), Yamoussoukro, Cote d'Ivoire
	Corporate Author				Thesis
	Publisher	Nature Publishing Group	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	20452322 (Issn)	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	878
Permanent link to this record



	Author	Dejean, A.; Fisher, B.L.; Corbara, B.; Rarevohitra, R.; Randrianaivo, R.; Rajemison, B.; Leponce, M.
	Title	Spatial Distribution of Dominant Arboreal Ants in a Malagasy Coastal Rainforest: Gaps and Presence of an Invasive Species			Type	Journal Article
	Year	2010	Publication	PLoS One	Abbreviated Journal	PLoS One
	Volume	5	Issue	2	Pages	e9319
	Keywords
	Abstract	We conducted a survey along three belt transects located at increasing distances from the coast to determine whether a non-random arboreal ant assemblage, such as an ant mosaic, exists in the rainforest on the Masoala Peninsula, Madagascar. In most tropical rainforests, very populous colonies of territorially dominant arboreal ant species defend absolute territories distributed in a mosaic pattern. Among the 29 ant species recorded, only nine had colonies large enough to be considered potentially territorially dominant; the remaining species had smaller colonies and were considered non-dominant. Nevertheless, the null-model analyses used to examine the spatial structure of their assemblages did not reveal the existence of an ant mosaic. Inland, up to 44% of the trees were devoid of dominant arboreal ants, something not reported in other studies. While two Crematogaster species were not associated with one another, Brachymyrmex cordemoyi was positively associated with Technomyrmex albipes, which is considered an invasive species-a non-indigenous species that has an adverse ecological effect on the habitats it invades. The latter two species and Crematogaster ranavalonae were mutually exclusive. On the other hand, all of the trees in the coastal transect and at least 4 km of coast were occupied by T. albipes, and were interconnected by columns of workers. Technomyrmex albipes workers collected from different trees did not attack each other during confrontation tests, indicating that this species has formed a supercolony along the coast. Yet interspecific aggressiveness did occur between T. albipes and Crematogaster ranavalonae, a native species which is likely territorially dominant based on our intraspecific confrontation tests. These results suggest that the Masoala rainforest is threatened by a potential invasion by T. albipes, and that the penetration of this species further inland might be facilitated by the low density of native, territorially dominant arboreal ants normally able to limit its progression.
	Address	[Dejean, Alain] CNRS, Unite Mixte Rech 8172, Kourou, France, Email: alain.dejean@wanadoo.fr
	Corporate Author				Thesis
	Publisher	PUBLIC LIBRARY SCIENCE	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1932-6203	ISBN		Medium
	Area		Expedition		Conference
	Notes	ISI:000274923700021			Approved	no
	Call Number	EcoFoG @ eric.marcon @			Serial	81
Permanent link to this record



	Author	Hartke, J.; Sprenger, P.P.; Sahm, J.; Winterberg, H.; Orivel, J.; Baur, H.; Beuerle, T.; Schmitt, T.; Feldmeyer, B.; Menzel, F.
	Title	Cuticular hydrocarbons as potential mediators of cryptic species divergence in a mutualistic ant association			Type	Journal Article
	Year	2019	Publication	Ecology and Evolution	Abbreviated Journal
	Volume	9	Issue	16	Pages	9160-9176
	Keywords	environmental association; integrative taxonomy; niche differentiation; population structure; sexual selection; speciation
	Abstract	Upon advances in sequencing techniques, more and more morphologically identical organisms are identified as cryptic species. Often, mutualistic interactions are proposed as drivers of diversification. Species of the neotropical parabiotic ant association between Crematogaster levior and Camponotus femoratus are known for highly diverse cuticular hydrocarbon (CHC) profiles, which in insects serve as desiccation barrier but also as communication cues. In the present study, we investigated the association of the ants’ CHC profiles with genotypes and morphological traits, and discovered cryptic species pairs in both genera. To assess putative niche differentiation between the cryptic species, we conducted an environmental association study that included various climate variables, canopy cover, and mutualistic plant species. Although mostly sympatric, the two Camponotus species seem to prefer different climate niches. However in the two Crematogaster species, we could not detect any differences in niche preference. The strong differentiation in the CHC profiles may thus suggest a possible role during speciation itself either by inducing assortative mating or by reinforcing sexual selection after the speciation event. We did not detect any further niche differences in the environmental parameters tested. Thus, it remains open how the cryptic species avoid competitive exclusion, with scope for further investigations. © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
	Address	Department of Evolutionary Animal Ecology, University of Bayreuth, Bayreuth, Germany
	Corporate Author				Thesis
	Publisher	John Wiley and Sons Ltd	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	20457758 (Issn)	ISBN		Medium
	Area		Expedition		Conference
	Notes	Export Date: 2 September 2019; Correspondence Address: Hartke, J.; Senckenberg Biodiversity and Climate Research CentreGermany; email: Juliane.Hartke@senckenberg.de; Funding details: Leibniz-Gemeinschaft; Funding details: Agence Nationale de la Recherche, Not Available; Funding details: Deutsche Forschungsgemeinschaft, DFG, ME 3842/5‐1; Funding text 1: We thank Philippe Cerdan and Aurelie Dourdain for research permissions in the Hydreco Lab Petit Saut and the Paracou Research Station, respectively. Similarly, we thank Patrick Châtelet, Philippe Gaucher, and Dorothée Deslignes for permission to sample in the Les Nouragues Reserve. Further on, we thank Heike Stypa for supporting us in preparing the chemical samples. We thank Aidin Niamir for his helpful advice regarding climate data analysis. Financial support for this study was provided by the German Science Foundation (DFG) as a grant to Barbara Feldmeyer (FE 1333/7‐1), Thomas Schmitt (SCHM 2645/7‐1), and Florian Menzel (ME 3842/5‐1) and a grant managed by the French Agence Nationale de la Recherche (CEBA, ref. ANR‐10‐LABX‐25‐01) to Jérôme Orivel. The publication of this article was funded by the Open Access Fund of the Leibniz Association. 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A case study on two cryptic pairs of butterflies (2015) PLoS ONE, 10. , https://doi.org/10.1371/journal.pone.0117802; Wickham, H., (2016) ggplot2: Elegant graphics for data analysis, , 2nd ed., New York, NY, Springer-Verlag; Wolak, M.E., Fairbairn, D.J., Paulsen, Y.R., Guidelines for estimating repeatability (2012) Methods in Ecology and Evolution, 3, pp. 129-137. , https://doi.org/10.1111/j.2041-210X.2011.00125.x			Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	881
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	Author	Urbina, Ifigenia ; Grau, Oriol ; Sardans, Jordi ; Margalef, Olga ; Peguero, Guillermo ; Asensio, Dolores ; Llusia, Joan ; Ogaya, Roma ; Gargallo-Garriga, Albert ; Van Langenhove, Leandro ; Verryckt, Lore T. ; Courtois, Elodie A. ; Stahl, Clement ; Soong, Jennifer L. ; Chave, Jérome ; Hérault, Bruno ; Janssens, Ivan A. ; Sayer, Emma ; Penuelas, Josep
	Title	High foliar K and P resorption efficiencies in old-growth tropical forests growing on nutrient-poor soils			Type	Journal Article
	Year	2021	Publication	Ecology and Evolution	Abbreviated Journal
	Volume	11	Issue	13	Pages	8969-8982
	Keywords
	Abstract	Resorption is the active withdrawal of nutrients before leaf abscission. This mechanism represents an important strategy to maintain efficient nutrient cycling; however, resorption is poorly characterized in old-growth tropical forests growing in nutrient-poor soils. We investigated nutrient resorption from leaves in 39 tree species in two tropical forests on the Guiana Shield, French Guiana, to investigate whether resorption efficiencies varied with soil nutrient, seasonality, and species traits. The stocks of P in leaves, litter, and soil were low at both sites, indicating potential P limitation of the forests. Accordingly, mean resorption efficiencies were higher for P (35.9%) and potassium (K; 44.6%) than for nitrogen (N; 10.3%). K resorption was higher in the wet (70.2%) than in the dry (41.7%) season. P resorption increased slightly with decreasing total soil P; and N and P resorptions were positively related to their foliar concentrations. We conclude that nutrient resorption is a key plant nutrition strategy in these old-growth tropical forests, that trees with high foliar nutrient concentration reabsorb more nutrient, and that nutrients resorption in leaves, except P, are quite decoupled from nutrients in the soil. Seasonality and biochemical limitation played a role in the resorption of nutrients in leaves, but species-specific requirements obscured general tendencies at stand and ecosystem level.
	Address
	Corporate Author				Thesis
	Publisher	Wiley	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
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	Call Number	EcoFoG @ webmaster @			Serial	1011
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	Author	Roux, O.; Billen, J.; Orivel, J.; Dejean, A.
	Title	An Overlooked Mandibular-Rubbing Behavior Used during Recruitment by the African Weaver Ant, Oecophylla longinoda			Type	Journal Article
	Year	2010	Publication	PLoS One	Abbreviated Journal	PLoS One
	Volume	5	Issue	2	Pages	e8957
	Keywords
	Abstract	In Oecophylla, an ant genus comprising two territorially dominant arboreal species, workers are known to (1) use anal spots to mark their territories, (2) drag their gaster along the substrate to deposit short-range recruitment trails, and (3) drag the extruded rectal gland along the substrate to deposit the trails used in long-range recruitment. Here we study an overlooked but important marking behavior in which O. longinoda workers first rub the underside of their mandibles onto the substrate, and then-in a surprising posture-tilt their head and also rub the upper side of their mandibles. We demonstrate that this behavior is used to recruit nestmates. Its frequency varies with the rate at which a new territory, a sugary food source, a prey item, or an alien ant are discovered. Microscopy analyses showed that both the upper side and the underside of the mandibles possess pores linked to secretory glands. So, by rubbing their mandibles onto the substrate, the workers probably spread a secretion from these glands that is involved in nestmate recruitment.
	Address	[Roux, Olivier; Dejean, Alain] CNRS, UMR, Kourou, France, Email: oroux@cict.fr
	Corporate Author				Thesis
	Publisher	PUBLIC LIBRARY SCIENCE	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1932-6203	ISBN		Medium
	Area		Expedition		Conference
	Notes	ISI:000274209700003			Approved	no
	Call Number	EcoFoG @ eric.marcon @			Serial	82
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	Author	Rodrigues, A.M.S.; Eparvier, V.; Odonne, G.; Amusant, N.; Stien, D.; Houël, E.
	Title	The antifungal potential of (Z)-ligustilide and the protective effect of eugenol demonstrated by a chemometric approach			Type	Journal Article
	Year	2019	Publication	Scientific Reports	Abbreviated Journal	Sci. Rep.
	Volume	9	Issue		Pages	8729
	Keywords
	Abstract	Mankind is on the verge of a postantibiotic era. New concepts are needed in our battle to attenuate infectious diseases around the world and broad spectrum plant-inspired synergistic pharmaceutical preparations should find their place in the global fight against pathogenic microorganisms. To progress towards the discovery of potent antifungal agents against human pathologies, we embarked upon developing chemometric approach coupled with statistical design to unravel the origin of the anticandidal potential of a set of 66 essential oils (EOs). EOs were analyzed by GC-MS and tested against Candida albicans and C. parapsilosis (Minimal Inhibitory Concentration, MIC). An Orthogonal Partial Least Square (OPLS) analysis allowed us to identify six molecules presumably responsible for the anticandidal activity of the oils: (Z)-ligustilide, eugenol, eugenyl acetate, citral, thymol, and β-citronellol. These compounds were combined following a full factorial experimental design approach in order to optimize the anticandidal activity and selectivity index (SI = IC50(MRC5 cells)/MIC) through reconstituted mixtures. (Z)-Ligustilide and citral were the most active compounds, while (Z)-ligustilide and eugenol were the two main factors that most contributed to the increase of the SI. These two terpenes can, therefore, be used to construct bioinspired synergistic anticandidal mixtures. © 2019, The Author(s).
	Address	CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, Cayenne, 97300, France
	Corporate Author				Thesis
	Publisher	Nature Publishing Group	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	20452322 (Issn)	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	876
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	Author	Molina, L.; Broquet, G.; Imbach, P.; Chevallier, F.; Poulter, B.; Bonal, D.; Burban, B.; Ramonet, M.; Gatti, L.V.; Wofsy, S.C.; Munger, J.W.; Dlugokencky, E.; Ciais, P.
	Title	On the ability of a global atmospheric inversion to constrain variations of CO2 fluxes over Amazonia			Type	Journal Article
	Year	2015	Publication	Atmospheric Chemistry and Physics	Abbreviated Journal	Atmospheric Chemistry and Physics
	Volume	15	Issue	14	Pages	8423-8438
	Keywords
	Abstract	The exchanges of carbon, water and energy between the atmosphere and the Amazon basin have global implications for the current and future climate. Here, the global atmospheric inversion system of the Monitoring of Atmospheric Composition and Climate (MACC) service is used to study the seasonal and interannual variations of biogenic CO<inf>2</inf> fluxes in Amazonia during the period 2002-2010. The system assimilated surface measurements of atmospheric CO<inf>2</inf> mole fractions made at more than 100 sites over the globe into an atmospheric transport model. The present study adds measurements from four surface stations located in tropical South America, a region poorly covered by CO<inf>2</inf> observations. The estimates of net ecosystem exchange (NEE) optimized by the inversion are compared to an independent estimate of NEE upscaled from eddy-covariance flux measurements in Amazonia. They are also qualitatively evaluated against reports on the seasonal and interannual variations of the land sink in South America from the scientific literature. We attempt at assessing the impact on NEE of the strong droughts in 2005 and 2010 (due to severe and longer-than-usual dry seasons) and the extreme rainfall conditions registered in 2009. The spatial variations of the seasonal and interannual variability of optimized NEE are also investigated. While the inversion supports the assumption of strong spatial heterogeneity of these variations, the results reveal critical limitations of the coarse-resolution transport model, the surface observation network in South America during the recent years and the present knowledge of modelling uncertainties in South America that prevent our inversion from capturing the seasonal patterns of fluxes across Amazonia. However, some patterns from the inversion seem consistent with the anomaly of moisture conditions in 2009. © Author(s) 2015.
	Address	NOAA, Earth System Research Laboratory, Global Monitoring Division, Boulder, CO, United States
	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	Export Date: 27 August 2015			Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	615
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	Author	Rahali, H.; Stien, D.
	Title	Highly-loaded amphiphilic polyimino resin: quench reagent and solid support for peptide synthesis			Type	Journal Article
	Year	2006	Publication	Tetrahedron Letters	Abbreviated Journal	Tetrahedron Lett.
	Volume	47	Issue	47	Pages	8205-8207
	Keywords
	Abstract	We demonstrate herein that polyimino resin 4a prepared by condensation of alpha,alpha'-dichloro-p-xylene, ethylenediamine and tris-(2-aminoethyl)-amine can be successfully exploited as a quench reagent for acids and electrophiles both in aqueous and organic solutions. Scope and limitations of such a resin as a solid support for peptide synthesis were also investigated. (c) 2006 Elsevier Ltd. All rights reserved.
	Address	CNRS, UMR Ecofog, Inst Enseignement Super Guyane, F-97337 Cayenne, France, Email: didier.stien@guyane.cnrs.fr
	Corporate Author				Thesis
	Publisher	PERGAMON-ELSEVIER SCIENCE LTD	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0040-4039	ISBN		Medium
	Area		Expedition		Conference
	Notes	ISI:000241910200002			Approved	no
	Call Number	EcoFoG @ eric.marcon @			Serial	172
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	Author	Levionnois, Sébastien ; Salmon, Camille ; Alméras, Tancrède ; Clair, Bruno ; Ziegler, Camille ; Coste, Sabrina ; Stahl, Clement ; Gonzalez-Melo, Andrés ; Heinz, Christine ; Heuret, Patrick
	Title	Anatomies, vascular architectures, and mechanics underlying the leaf size-stem size spectrum in 42 Neotropical tree species			Type	Journal Article
	Year	2021	Publication	Journal of Experimental Botany	Abbreviated Journal
	Volume	72	Issue	22	Pages	7957–7969
	Keywords
	Abstract	The leaf size-stem size spectrum is one of the main dimensions of plant ecological strategies. Yet the anatomical, mechanical, and hydraulic implications of small vs. large shoots are still poorly understood. We investigated 42 tropical rainforest tree species in French Guiana, with a wide range of leaf areas at the shoot level. We quantified the scaling of hydraulic and mechanical constraints with shoot size estimated as the water potential difference ΔΨ and the bending angle ΔΦ, respectively. We investigated how anatomical tissue area, flexural stiffness and xylem vascular architecture affect such scaling by deviating (or not) from theoretical isometry with shoot size variation. Vessel diameter and conductive path length were found to be allometrically related to shoot size, thereby explaining the independence between ΔΨ and shoot size. Leaf mass per area, stem length, and the modulus of elasticity were allometrically related with shoot size, explaining the independence between ΔΦ and shoot size. Our study also shows that the maintenance of both water supply and mechanical stability across the shoot size range are not in conflict.
	Address
	Corporate Author				Thesis
	Publisher	Oxford University Press	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				Approved	no
	Call Number	EcoFoG @ webmaster @			Serial	1050
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