Navegando por Autor "Aberlenc, Henri Pierre"

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Arthropod diversity in a tropical forest.
(2012) Basset, Yves; Cizek, Lukas; Cuénoud, Philippe; Didham, Raphael K.; Guilhaumon, François; Missa, Olivier; Novotny, Vojtech; Ødegaard, Frode; Roslin, Tomas; Schmidl, Jürgen; Tishechkin, Alexey K.; Winchester, Neville N.; Roubik, David W.; Aberlenc, Henri Pierre; Bail, Johannes; Barrios, Héctor; Bridle, Jonathan R.; Meneses, Gabriela Castaño; Corbara, Bruno; Curletti, Gianfranco; Rocha, Wesley Duarte da; Bakker, Domir De; Delabie, Jacques Hubert Charles; Dejean, Alain; Fagan, Laura L.; Floren, Andreas; Kitching, Roger L.; Medianero, Enrique; Miller, Scott E.; Oliveira, Evandro Gama de; Orivel, Jérôme; Pollet, Marc; Rapp, Mathieu; Ribeiro, Sérvio Pontes; Roisin, Yves; Schmidt, Jesper B.; Sørensen, Line L.; Leponce, Maurice
Most eukaryotic organisms are arthropods. Yet, their diversity in rich terrestrial ecosystems is still unknown. Here we produce tangible estimates of the total species richness of arthropods in a tropical rainforest. Using a comprehensive range of structured protocols, we sampled the phylogenetic breadth of arthropod taxa from the soil to the forest canopy in the San Lorenzo forest, Panama. We collected 6144 arthropod species from 0.48 hectare and extrapolated total species richness to larger areas on the basis of competing models. The whole 6000-hectare forest reserve most likely sustains 25,000 arthropod species. Notably, just 1 hectare of rainforest yields >60% of the arthropod biodiversity held in the wider landscape. Models based on plant diversity fitted the accumulated species richness of both herbivore and nonherbivore taxa exceptionally well. This lends credence to global estimates of arthropod biodiversity developed from plant models.
IBISCA-Panama, a large-scale study of arthropod beta-diversity and vertical stratification in a lowland rainforest : rationale, study sites and field protocols.
(2007) Basset, Yves; Corbara, Bruno; Barrios, Héctor; Cuénoud, Philippe; Leponce, Maurice; Aberlenc, Henri Pierre; Bail, Johannes; Bito, Darren; Bridle, Jonathan R.; Castaño Meneses, Gabriela; Cizek, Lukas; Cornejo, Aydee; Curletti, Gianfranco; Delabie, Jacques Hubert Charles; Dejean, Alain; Didham, Raphael K.; Dufrêne, Marc; Fagan, Laura L.; Floren, Andreas; Frame, Dawn M.; Hallé, Francis; Hardy, Olivier J.; Hernandez, Andrés; Kitching, Roger L.; Lewinsohn, Thomas M.; Lewis, Owen T.; Medianero, Enrique; Missa, Olivier; Mitchell, Andrew W.; Mogia, Martin; Novotny, Vojtech; Ødegaard, Frode; Oliveira, Evandro Gama de; Orivel, Jérôme; Ozanne, laire M. P.; Pascal, Olivier; Pinzón, Sara; Rapp, Mathieu; Ribeiro, Sérvio Pontes; Roisin, Yves; Roslin, Tomas; Roubik, David W.; Samaniego, Mirna; Schmidl, Jürgen; Sørensen, Line L.; Tishechkin, Alexey K.; Osselaer, Christian Van; Winchester, Neville N.
IBISCA-Panama (“Investigating the BIodiversity of Soil and Canopy Arthropods”, Panama module) represents a large-scale research initiative to quantify the spatial distribution of arthropod biodiversity in a Neotropical forest, using a combination of (1) international collaboration, (2) a set of common research questions, and (3) an integrated experimental design. Here, we present the rationale of the programme, describe the study sites, and outline field protocols. In the San Lorenzo Protected Area of Panama, twelve 20 x 20 m sites, all less than 2 km apart, were surveyed for plants and arthropods, from the ground to the upper canopy. Access to the canopy and its fauna was facilitated by fogging, single-rope techniques and a variety of devices such as a canopy crane, the “SolVin-Bretzel” canopy raft, the canopy bubble and Ikos. IBISCA-Panama represented the first attempt to combine these complementary techniques of canopy access in a large-scale investigation. Such techniques provided spatial replication during initial field work performed in September-October 2003. Temporal replication across seasons consisted of subsequent field work of varying intensity during dry, early wet and late wet periods in 2004. Arthropods were surveyed using 14 different protocols targeting the soil, litter, understorey, mid-canopy and upper canopy habitats. These protocols included: WINKLER sifting; BERLESE-TULLGREN; hand-collecting of galls and social insects; fogging; beating; woodrearing; baits; and various types of traps such as pitfall, small and large flight-interception, sticky, light, and Malaise traps. Currently, analyses of arthropod distribution in this forest concentrate on a set of 63 focal taxa representing different phylogenies and lifehistories. IBISCA-Panama may be considered as a model for largescale research programmes targeting invertebrate biodiversity. Its collaborative modus operandi can be applied to answer a variety of pressing ecological questions related to forest biodiversity, as evidenced by the recent development of further IBISCA programmes in other parts of the world.
Spatial and functional structure of an entire ant assemblage in a lowland Panamanian rainforest.
(2021) Leponcea, Maurice; Corbara, Bruno; Delabie, Jacques Hubert Charles; Orivel, Jérôme; Aberlenc, Henri Pierre; Bail, Johannes; Barrios, Héctor; Campos, Ricardo Ildefonso de; Nascimento, Ivan Cardoso do; Compin, Arthur; Didham, Raphael K.; Floren, Andreas; Medianero, Enrique; Ribeiro, Sérvio Pontes; Roisin, Yves; Schmidl, Juergen; Tishechkin, Alexey K.; Winchester, Neville N.; Basset, Yves; Dejean, Alain
Ants are a major ecological group in tropical rainforests. Few studies in the Neotropics have documented the distribution of ants from the ground to the canopy, and none have included the understorey. A previous analysis of an intensive arthropod study in Panama, involving 11 sampling methods, showed that the factors influencing ant b diversity (i.e., changes in assem- blage composition) were, in decreasing order of importance, the vertical (height), temporal (season), and horizontal (geographic distance) dimensions. In the present study, we went one step further and aimed (1) to identify the best sampling methods to study the entire ant assemblage across the three strata, (2) to test if all strata show a similar horizontal b diversity and (3) to ana- lyze the functional structure of the entire ant assemblage. We identified 405 ant species from 11 subfamilies and 68 genera. Slightly more species were sampled in the canopy than on the ground; they belonged to distinct sub-assemblages. The under- storey fauna was mainly a mixture of species found in the other two strata. The horizontal b diversity between sites was similar for the three strata. About half of the ant species foraged in two (29%) or three (25%) strata. A single method, aerial flight inter- ception traps placed alongside tree trunks, acting as arboreal pitfall traps, collected half of the species and reflected the vertical stratification. Using the functional traits approach, we observed that generalist species with mid-sized colonies were by far the most numerous (31%), followed by ground- or litter-dwelling species, either specialists (20%), or generalists (16%), and arbo- real species, either generalists (19%) or territorially dominant (8%), and finally army ants (5%). Our results reinforce the idea that a proper understanding of the functioning of ant assemblages requires the inclusion of arboreal ants in survey programs. © 2021 Gesellschaft für Ökologie. Published by Elsevier GmbH. All rights reserved.