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Implementing large-scale and long-term functional biodiversity research: The Biodiversity Exploratories
Abstract Functional biodiversity research explores drivers and functional consequences of biodiversity changes. Land use change is a major driver of changes of biodiversity and of biogeochemical andExpand
Effects of light and prey availability on nocturnal, lunar and seasonal activity of tropical nightjars
The courtship and breeding phenology of both nightjars was timed to coincide with the peak in aerial insect abundance, suggesting that prey availability rather than direct abiotic factors act as constraints, at least at the seasonal level. Expand
Diversity, evolutionary specialization and geographic distribution of a mutualistic ant-plant complex: Macaranga and Crematogaster in South East Asia
Despite common sympatric distribution of Macaranga species, in most cases a surprisingly high specificity of ant colonization was maintained which was, however, often not species-specific but groups of certain plant species with identical ant partners could be found. Expand
Temporal, spatial and biotic variations in extrafloral nectar secretion by Macaranga tanarius
Extrafloral nectar of M. tanarius was secreted in complex patterns influenced by different biotic and abiotic factors; its production appeared to be adapted temporally and spatially in order to ensure optimal use of invested resources. Expand
Reduced growth and seed set following chemical induction of pathogen defence: does systemic acquired resistance (SAR) incur allocation costs?
Fitness costs resulting from the chemical induction of systemic acquired resistance (SAR), a rather unspecific form of defence, which can be induced by and is effective against a broad spectrum of bacteria, fungi and viruses, are focused on. Expand
Extrafloral nectar production of the ant-associated plant, Macaranga tanarius, is an induced, indirect, defensive response elicited by jasmonic acid.
EFN production represents an alternative mechanism for induced, indirect defensive plant responses that are mediated via the octadecanoid signal transduction cascade, and quantitative dose-response relations were found between the increase in nectar production and both the intensity of leaf damage and the amounts of exogenously applied JA. Expand
Pollen amino acids and flower specialisation in solitary bees
Pollen sources of oligoleges showed a lower concentration of essential amino acids and deviated more strongly from the ideal composition ofessential amino acids as determined for honey bees than plants not hosting oligoLeges, but this trend was not confirmed on a cruder phylogenetic plant family level. Expand
Environmental Factors Affect Acidobacterial Communities below the Subgroup Level in Grassland and Forest Soils
Edaphic properties, such as pH, organic carbon, total nitrogen, C/N ratio, phosphorus, nitrate, ammonium, soil moisture, soil temperature, and soil respiration, had an impact on community composition as assessed by fingerprinting, but interrelations with environmental parameters among subgroup terminal restriction fragments (T-RFs) differed significantly, e.g., different Gp1 T- RFs correlated positively or negatively with nitrogen content. Expand
Diversity erosion beyond the species level : Dramatic loss of functional diversity after selective logging in two tropical amphibian communities
Assessing the effects of logging on different aspects of biodiversity and general ecosystem properties is of prime importance if the few remaining areas of intact tropical forest are to beExpand
Polydomy and the organization of foraging in a colony of the Malaysian giant ant Camponotus gigas (Hym. / Form.)
The Malaysian giant ant Camponotus gigas is based on a polydomous colony structure in combination with efficient communication, ergonomic optimization, polyethism and an effective recruitment system that allows foragers to forage in huge three-dimensional territories in the rain forest canopies. Expand