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Blundo, Cecilia ; Carilla, Julieta ; Grau, Ricardo ; Malizia, Malizia ; Malizia, Lucio ; Osinaga-Acosta, Oriana ; Bird, Michael ;Bradford, Matt ; Catchpole, Damien ; Ford, Ford ;Graham, Andrew ; Hilbert, David ; Kemp, Jeanette ; Laurance, Susan ; Laurance, William ; Yoko Ishida, Françoise ; Marshall, Andrew ; Waite, Catherine ; ForestPlots.net nx, Cecilia Blundo a, Julieta Carilla a, Ricardo Grau a, Agustina Malizia a, Lucio Malizia b, Oriana Osinaga-Acosta a, Michael Bird c, Matt Bradford d, Damien Catchpole e, Andrew Ford d, Andrew Graham f, David Hilbert g, Jeanette Kemp h, Susan Laurance i, William Laurance i, Francoise Yoko Ishida j, Andrew Marshall k,l,m, Catherine Waite k, Hannsjoerg Woell n, Jean-Francois Bastin o, Marijn Bauters p, Hans Beeckman q, Pfascal Boeckx r, Jan Bogaert s, Charles De Canniere t, Thales de Haulleville u, Jean-Louis Doucet v, Olivier Hardy w, Wannes Hubau x, Elizabeth Kearsley y, Hans Verbeeck z, Jason Vleminckx aa, Steven W. Brewer ab, Alfredo Alarc´on ac, Alejandro Araujo-Murakami ad, Eric Arets ae, Luzmila Arroyo ad, Ezequiel Chavez af, Todd Fredericksen ac, Ren´e Guill´en Villaroel ag, Gloria Gutierrez Sibauty ah, Timothy Killeen ai, Juan Carlos Licona ac, John Lleigue ae, Casimiro Mendoza aj, Samaria Murakami ae, Alexander Parada Gutierrez ad, Guido Pardo ak, Marielos Pe˜na-Claros ae, Lourens Poorter ae, Marisol Toledo al, Jeanneth Villalobos Cayo am, Laura Jessica Viscarra ai, Vincent Vos an, Jorge Ahumada ao, Everton Almeida ap, Jarcilene Almeida aq, Edmar Almeida de Oliveira ar, Wesley Alves da Cruz as, Atila Alves de Oliveira at, Fabrício Alvim Carvalho au, Fl´avio Amorim Obermuller av, Ana Andrade aw, Fernanda Antunes Carvalho ax, Simone Aparecida Vieira ay, Ana Carla Aquino az, Luiz Arag˜ao ba, Ana Claudia Araújo bb, Marco Antonio Assis bc, Jose Ataliba Mantelli Aboin Gomes bd, Fabrício Baccaro be, Plínio Barbosa de Camargo bf, Paulo Barni bg, Jorcely Barroso bh, Luis Carlos Bernacci bi, Kauane Bordin bj, Marcelo Brilhante de Medeiros bk, Igor Broggio bl, Jos´e Luís Camargo av, Domingos Cardoso bm, Maria Antonia Carniello as, Andre Luis Casarin Rochelle bn, Carolina Castilho bo, Antonio Alberto Jorge Farias Castro bp, Wendeson Castro bq, Sabina Cerruto Ribeiro bh, Fl´avia Costa br, Rodrigo Costa de Oliveira bs, Italo Coutinho bt, John Cunha bu, Lola da Costa bv, Lucia da Costa Ferreira bw, Richarlly da Costa Silva bx, Marta da Graça Zacarias Simbine ay, Vitor de Andrade Kamimura bc, Haroldo Cavalcante de Lima by, Lia de Oliveira Melo bz, Luciano de Queiroz ca, Jos´e Romualdo de Sousa Lima cb, M´ario do Espírito Santo cc, Tomas Domingues cd, Nayane Cristina dos Santos Prestes ce, Steffan Eduardo Silva Carneiro cf, Fernando Elias cg, Gabriel Eliseu cf, Thaise Emilio ch, Camila Laís Farrapo ci, Letícia Fernandes bh, Gustavo Ferreira cf, Joice Ferreira bk, Leandro Ferreira cj, Socorro Ferreira ck, Marcelo Fragomeni Simon bk, Maria Aparecida Freitas cl, Queila S. García cm, Angelo Gilberto Manzatto cn, Paulo Graça co, Frederico Guilherme cf, Eduardo Hase cl, Niro Higuchi cp, Mariana Iguatemy cq, Reinaldo Imbrozio Barbosa cr, Margarita Jaramillo cs, Woell n, Jean-Francois Bastin o, Marijn Bauters p, Hans Beeckman q, Pfascal Boeckx r, Jan Bogaert s, Charles De Canniere t, Thales de Haulleville u, Jean-Louis Doucet v, Olivier Hardy w, Wannes Hubau x, Elizabeth Kearsley y, Hans Verbeeck z, Jason Vleminckx aa, Steven W. Brewer ab, Alfredo Alarc´on ac, Alejandro Araujo-Murakami ad, Eric Arets ae, Luzmila Arroyo ad, Ezequiel Chavez af, Todd Fredericksen ac, Ren´e Guill´en Villaroel ag, Gloria Gutierrez Sibauty ah, Timothy Killeen ai, Juan Carlos Licona ac, John Lleigue ae, Casimiro Mendoza aj, Samaria Murakami ae, Alexander Parada Gutierrez ad, Guido Pardo ak, Marielos Pe˜na-Claros ae, Lourens Poorter ae, Marisol Toledo al, Jeanneth Villalobos Cayo am, Laura Jessica Viscarra ai, Vincent Vos an, Jorge Ahumada ao, Everton Almeida ap, Jarcilene Almeida aq, Edmar Almeida de Oliveira ar, Wesley Alves da Cruz as, Atila Alves de Oliveira at, Fabrício Alvim Carvalho au, Fl´avio Amorim Obermuller av, Ana Andrade aw, Fernanda Antunes Carvalho ax, Simone Aparecida Vieira ay, Ana Carla Aquino az, Luiz Arag˜ao ba, Ana Claudia Araújo bb, Marco Antonio Assis bc, Jose Ataliba Mantelli Aboin Gomes bd, Fabrício Baccaro be, Plínio Barbosa de Camargo bf, Paulo Barni bg, Jorcely Barroso bh, Luis Carlos Bernacci bi, Kauane Bordin bj, Marcelo Brilhante de Medeiros bk, Igor Broggio bl, Jos´e Luís Camargo av, Domingos Cardoso bm, Maria Antonia Carniello as, Andre Luis Casarin Rochelle bn, Carolina Castilho bo, Antonio Alberto Jorge Farias Castro bp, Wendeson Castro bq, Sabina Cerruto Ribeiro bh, Fl´avia Costa br, Rodrigo Costa de Oliveira bs, Italo Coutinho bt, John Cunha bu, Lola da Costa bv, Lucia da Costa Ferreira bw, Richarlly da Costa Silva bx, Marta da Graça Zacarias Simbine ay, Vitor de Andrade Kamimura bc, Haroldo Cavalcante de Lima by, Lia de Oliveira Melo bz, Luciano de Queiroz ca, Jos´e Romualdo de Sousa Lima cb, M´ario do Espírito Santo cc, Tomas Domingues cd, Nayane Cristina dos Santos Prestes ce, Steffan Eduardo Silva Carneiro cf, Fernando Elias cg, Gabriel Eliseu cf, Thaise Emilio ch, Camila Laís Farrapo ci, Letícia Fernandes bh, Gustavo Ferreira cf, Joice Ferreira bk, Leandro Ferreira cj, Socorro Ferreira ck, Marcelo Fragomeni Simon bk, Maria Aparecida Freitas cl, Queila S. García cm, Angelo Gilberto Manzatto cn, Paulo Graça co, Frederico Guilherme cf, Eduardo Hase cl, Niro Higuchi cp, Mariana Iguatemy cq, Reinaldo Imbrozio Barbosa cr, Margarita Jaramillo cs, |
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EcoFoG @ webmaster @ |
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1020 |
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Donald, Julian ; Murienne, Jérôme ; Chave, Jérome ; Iribar, Amaia ; Louisanna, Eliane ; Manzi, Sophie ; Roy, Melanie ; Tao, Shengli ; Orivel, Jérome ; Schimann, Heidy; Zinger, Lucie |
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Multi-taxa environmental DNA inventories reveal distinct taxonomic and functional diversity in urban tropical forest fragments |
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2021 |
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Global Ecology and Conservation |
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29 |
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e01724 |
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Urban expansion and associated habitat transformation drives shifts in biodiversity, with declines in taxonomic and functional diversity. Forests fragments within urban landscapes offer a number of ecosystem services, and help to maintain biodiversity and ecosystem functions. Here, we focus on a tropical forest environment, and on the soil biota. Using eDNA metabarcoding, we compare forest fragments within the city of Cayenne, French Guiana, with a neighbouring continuous undisturbed forest. We wished to determine if urban forest fragments conserve high levels of alpha and beta diversity as well as similar functional composition for plants, soil animals, fungi and bacteria. We found that alpha diversity is similar across habitats for plants and fungi, lower in urban forests for metazoans and higher for bacteria. We also found that urban forests communities differ from undisturbed forests in their taxonomic composition, with urban forests exhibiting greater turnover between fragments potentially caused by ecological drift and limited dispersal. However, their functional composition exhibited limited differences, with an enrichment of palms, arbuscular mycorrhizal fungi and bacteria and a depletion of climber plants and termites. Thus, although urban forest fragments do shelter soil biodiversity that differs from native forests, the losses of soil functions may be relatively limited. This study demonstrates the strong potential of a multi-taxa eDNA approach for rapid inventories across taxonomic kingdoms, in particular for cryptic soil diversity. It also demonstrates the key role of urban forest fragments in conserving biodiversity and ecosystem function, and points to a need for more systematic monitoring of these areas in urban management plans. |
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EcoFoG @ webmaster @ |
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1025 |
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Quéméré, Erwan ; Aucourt, Marie ; Troispoux, Valérie ; Brosse, Sébastien ; Murienne, Jérôme ; Covain, Raphael ; Le Bail, Pierre-Yves ; Olivier, Jean ; Tysklind, Niklas ; Galan, Maxime |
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Unraveling the dietary diversity of Neotropical top predators using scat DNA metabarcoding: A case study on the elusive Giant Otter |
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2021 |
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Environmental DNA |
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3 |
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5 |
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889-900 |
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Large carnivores play a pivotal regulating role in maintaining healthy and balanced ecosystems; however, most of them are rare and elusive, and knowledge about their resource consumption is scarce. Traditional methods based on morphological identification of undigested remains are labor intensive and often not sufficiently accurate, leading to errors and biased ecological inferences. Here, we developed a multi-marker DNA metabarcoding approach to analyze the dietary diversity of giant otters (Pteronura brasiliensis) from fecal DNA while controlling predator species identity. We combined two mitochondrial markers, 12S rRNA and cytochrome c oxidase 1 (COI) gene, that target the full range of potential vertebrate and invertebrate prey. We compiled a local reference database of DNA barcodes for most potentially ingested fish, which were used to evaluate the specificity of the metabarcoding primers in silico. Most prey are identified at the species level (>90%) and the dietary profiles provided independently by the two markers are highly similar, whether in terms of list of prey or frequency of occurrences, hence validating the approach. We detected a higher number of rare fish prey with the 12S primers that amplified solely Teleost species while the degenerate COI primers revealed non-fish prey (e.g., amphibians, snakes, birds, and earthworms) and confirmed predator species identity. This study demonstrated that scat DNA metabarcoding is particularly useful to provide in-depth information on elusive carnivorous dietary profile. Our methodology opens up new opportunities to understand how top carnivores diet cope with the effects of anthropogenic alteration of ecosystems and identify conflicts with humans and livestock. |
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1054 |
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Vacher, Corinne ; Castagneyrol, Bastien ; Jousselin, Emmanuelle ; Schimann, Heidy |
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Trees and Insects Have Microbiomes: Consequences for Forest Health and Management |
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2021 |
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Current Forestry Reports |
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81-96 |
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Purpose of Review Forest research has shown for a long time that microorganisms influence tree-insect interactions, but the complexity of microbial communities, as well as the holobiont nature of both trees and insect herbivores, has only recently been taken fully into account by forest entomologists and ecologists. In this article, we review recent findings on the effects of tree-insect-microbiome interactions on the health of tree individuals and discuss whether and how knowledge about tree and insect microbiomes could be integrated into forest health management strategies. We then examine the effects tree-insect-microbiome interactions on forest biodiversity and regeneration, highlighting gaps in our knowledge at the ecosystem scale. Recent Findings Multiple studies show that herbivore damage in forest ecosystems is clearly influenced by tripartite interactions between trees, insects and their microbiomes. Recent research on the plant microbiome indicates that microbiomes of planted trees could be managed at several stages of production, from seed orchards to mature forests, to improve the resistance of forest plantations to insect pests. Therefore, the tree microbiome could potentially be fully integrated into forest health management strategies. To achieve this aim, future studies will have to combine, as has long been done in forest research, holistic goals with reductionist approaches. Efforts should be made to improve our understanding of how microbial fluxes between trees and insects determine the health of forest ecosystems, and to decipher the underlying mechanisms, through the development of experimental systems in which microbial communities can be manipulated. Knowledge about tree-insect-microbiome interactions should then be integrated into spatial models of forest dynamics to move from small-scale mechanisms to forest ecosystem-scale predictions. |
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1059 |
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Picard, Nicolas ; Mortier, Frédéric ; Ploton, Pierre ; Liang, Jingjing ; Derroire, Géraldine ; Bastin, Jean-François ; Ayyappan, Narayanan ; Bénédet, Fabrice ; Bosela, Faustin Boyemba ; Clark, Connie J. ; Crowther, Thomas W. ; Obiang, Nestor Laurier Engone ; Forni, Eric ; Harris, David ; Ngomanda, Alfred ; Poulsen, John R. ; Sonké, Bonaventure ; Couteron, Pierre ; Gourley-Fleury, Sylvie |
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Using Model Analysis to Unveil Hidden Patterns in Tropical Forest structures |
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2021 |
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Frontiers in Ecology and Evolution |
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9 |
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599200 |
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When ordinating plots of tropical rain forests using stand-level structural attributes such as biomass, basal area and the number of trees in different size classes, two patterns often emerge: a gradient from poorly to highly stocked plots and high positive correlations between biomass, basal area and the number of large trees. These patterns are inherited from the demographics (growth, mortality and recruitment) and size allometry of trees and tend to obscure other patterns, such as site differences among plots, that would be more informative for inferring ecological processes. Using data from 133 rain forest plots at nine sites for which site differences are known, we aimed to filter out these patterns in forest structural attributes to unveil a hidden pattern. Using a null model framework, we generated the anticipated pattern inherited from individual allometric patterns. We then evaluated deviations between the data (observations) and predictions of the null model. Ordination of the deviations revealed site differences that were not evident in the ordination of observations. These sites differences could be related to different histories of large-scale forest disturbance. By filtering out patterns inherited from individuals, our model analysis provides more information on ecological processes |
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Frontiers Media |
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1029 |
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Mirabel, Ariane ; Marcon, Eric ; Hérault, Bruno |
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30 Years of postdisturbance recruitment in a Neotropical forest |
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2021 |
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Ecology and Evolution |
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11 |
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21 |
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14448-14458 |
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John Wiley & Sons, Ltd (10.1111) |
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1043 |
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Gargallo-Garriga, Albert ; Sardans, Jordi ; Alrefaei, Abdulwahed Fahad ; Klem, Karel ; Fuchslueger, Lucia ; Ramirez-Rojas, Irène ; Donald, Julian ; Leroy, Celine ; Van Langenhove, Leandro ; Verbruggen, Erik ; Janssens, Ivan A. ; Urban, Otmar ; Penuelas, Josep |
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Tree Species and Epiphyte Taxa Determine the “Metabolomic niche” of Canopy Suspended Soils in a Species-Rich Lowland Tropical Rainforest |
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2021 |
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Metabolites |
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11 |
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Bacteria, Canopy soils, Epiphyte, French Guiana, Metabolomics |
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Tropical forests are biodiversity hotspots, but it is not well understood how this diversity is structured and maintained. One hypothesis rests on the generation of a range of metabolic niches, with varied composition, supporting a high species diversity. Characterizing soil metabolomes can reveal fine-scale differences in composition and potentially help explain variation across these habitats. In particular, little is known about canopy soils, which are unique habitats that are likely to be sources of additional biodiversity and biogeochemical cycling in tropical forests. We studied the effects of diverse tree species and epiphytes on soil metabolomic profiles of forest floor and canopy suspended soils in a French Guianese rainforest. We found that the metabolomic profiles of canopy suspended soils were distinct from those of forest floor soils, differing between epiphyte-associated and non-epiphyte suspended soils, and the metabolomic profiles of suspended soils varied with host tree species, regardless of association with epiphyte. Thus, tree species is a key driver of rainforest suspended soil metabolomics. We found greater abundance of metabolites in suspended soils, particularly in groups associated with plants, such as phenolic compounds, and with metabolic pathways related to amino acids, nucleotides, and energy metabolism, due to the greater relative proportion of tree and epiphyte organic material derived from litter and root exudates, indicating a strong legacy of parent biological material. Our study provides evidence for the role of tree and epiphyte species in canopy soil metabolomic composition and in maintaining the high levels of soil metabolome diversity in this tropical rainforest. It is likely that a wide array of canopy microsite-level environmental conditions, which reflect interactions between trees and epiphytes, increase the microscale diversity in suspended soil metabolomes |
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MDPI |
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1041 |
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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 |
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High foliar K and P resorption efficiencies in old-growth tropical forests growing on nutrient-poor soils |
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2021 |
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Ecology and Evolution |
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11 |
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13 |
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8969-8982 |
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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. |
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EcoFoG @ webmaster @ |
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1011 |
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Duplais, Christophe ; Sarou-Kanian, Vincent ; Massiot, Dominique ; Hassan, Alia ; Perrone, Barbara ; Estevez, Yannick ; Wertz, John; Martineau, Estelle ; Farjon, Jonathan ; Giraudeau, Patrick, Moreau, Carrie S. |
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Gut bacteria are essential for normal cutile development in herbivorous turtle ants |
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2021 |
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Nature Communication |
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Across the evolutionary history of insects, the shift from nitrogen-rich carnivore/omnivore diets to nitrogen-poor herbivorous diets was made possible through symbiosis with microbes. The herbivorous turtle ants Cephalotes possess a conserved gut microbiome which enriches the nutrient composition by recycling nitrogen-rich metabolic waste to increase the production of amino acids. This enrichment is assumed to benefit the host, but we do not know to what extent. To gain insights into nitrogen assimilation in the ant cuticle we use gut bacterial manipulation, 15N isotopic enrichment, isotope-ratio mass spectrometry, and 15N nuclear magnetic resonance spectroscopy to demonstrate that gut bacteria contribute to the formation of proteins, catecholamine cross-linkers, and chitin in the cuticle. This study identifies the cuticular components which are nitrogen-enriched by gut bacteria, highlighting the role of symbionts in insect evolution, and provides a framework for understanding the nitrogen flow from nutrients through bacteria into the insect cuticle. |
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NATURE PUBLISHING GROUP |
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Anglais |
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EcoFoG @ webmaster @ |
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1005 |
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Heu, Katy ; Romoli, Ottavia ; Schonbeck, Johan Claes ; Ajenoe, Rachel ; Epelboin, Yanouk ; Kircher, Verena ; Houel, Emeline ; Estevez, Yannick ; Gendrin, Mathilde |
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The Effect of Secondary Metabolites Produced by Serratia marcescens on Aedes aegypti and Its Microbiota |
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2021 |
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Frontiers in Microbiology |
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12 |
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645701 |
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Serratia marcescens is a bacterial species widely found in the environment, which very efficiently colonizes mosquitoes. In this study, we isolated a red-pigmented S. marcescens strain from our mosquito colony (called S. marcescens VA). This red pigmentation is caused by the production of prodigiosin, a molecule with antibacterial properties. To investigate the role of prodigiosin on mosquito- S. marcescens interactions, we produced two white mutants of S. marcescens VA by random mutagenesis. Whole genome sequencing and chemical analyses suggest that one mutant has a nonsense mutation in the gene encoding prodigiosin synthase, while the other one is deficient in the production of several types of secondary metabolites including prodigiosin and serratamolide. We used our mutants to investigate how S. marcescens secondary metabolites affect the mosquito and its microbiota. Our in vitro tests indicated that S. marcescens VA inhibits the growth of several mosquito microbiota isolates using a combination of prodigiosin and other secondary metabolites, corroborating published data. This strain requires secondary metabolites other than prodigiosin for its proteolytic and hemolytic activities. In the mosquito, we observed that S. marcescens VA is highly virulent to larvae in a prodigiosin-dependent manner, while its virulence on adults is lower and largely depends on other metabolites |
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Frontiers Media |
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EcoFoG @ webmaster @ |
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