A5069207842- Plant and animal studies
- Plant Parasitism and Resistance
- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Insect and Pesticide Research
- Insect and Arachnid Ecology and Behavior
- Plant and Fungal Species Descriptions
- Plant Reproductive Biology
- Evolutionary Game Theory and Cooperation
- Animal and Plant Science Education
- Wildlife Ecology and Conservation
- Mediterranean and Iberian flora and fauna
- Plant Diversity and Evolution
- Animal Ecology and Behavior Studies
- Amphibian and Reptile Biology
- Insect-Plant Interactions and Control
- Avian ecology and behavior
- Bee Products Chemical Analysis
- Evolution and Paleontology Studies
- Isotope Analysis in Ecology
- Primate Behavior and Ecology
- Botany, Ecology, and Taxonomy Studies
- Animal Behavior and Reproduction
- Indigenous Studies and Ecology
- Evolution and Genetic Dynamics
Aarhus University
2016-2025
Consejo Superior de Investigaciones Científicas
2006-2012
Charles Darwin Foundation
2012
Estación Biológica de Doñana
2006
RELX Group (Netherlands)
2005
University of Gothenburg
1993
Abstract Plant–animal mutualistic networks are interaction webs consisting of two sets entities, plant and animal species, whose evolutionary dynamics deeply influenced by the outcomes interactions, yielding a diverse array coevolutionary processes. These two‐mode sharing many common properties with others such as food webs, social, abiotic networks. Here we describe generalized patterns in topology 29 plant–pollinator 24 plant–frugivore natural communities. Scale‐free have been described...
Network approaches to ecological questions have been increasingly used, particularly in recent decades. The abstraction of systems - such as communities through networks interactions between their components indeed provides a way summarize this information with single objects. methodological framework derived from graph theory also numerous and measures analyze these objects can offer new perspectives on established theories well tools address challenges. However, prior using methods test...
1. Understanding the structure of ecological networks is a crucial task for interpreting community and ecosystem responses to global change. 2. Despite recent interest in this subject, almost all studies have focused exclusively on one specific network property. The question remains as what extent different properties are related how understanding relationship can advance our comprehension mechanisms behind these patterns. 3. Here, we analysed between nestedness modularity, two frequently...
We present a comprehensive approach to detect pattern in assemblages of plant and animal species linked by interactions such as pollination, frugivory or herbivory. Simple structural models produce gradient, compartmented nested patterns interaction; intermediate between gradient compartments are possible, nesting within produces combined model. Interaction can be visualized analyzed either matrices, bipartite networks multivariate sets through correspondence analysis. argue that differences...
Recent reviews of plant–pollinator mutualistic networks showed that generalization is a common pattern in this type interaction. Here we examine the ecological correlates patterns networks, especially how interaction covary with latitude, elevation, and insularity. We review few published analyses whole include unpublished material, analyzing 29 complete encompass arctic, alpine, temperate, Mediterranean, subtropical–tropical areas. The number interactions observed (I) was linear function...
Ecological networks are complexes of interacting species, but not all potential links among species realized. Unobserved either missing or forbidden. Missing exist, require more sampling alternative ways detection to be verified. Forbidden remain unobservable, irrespective effort. They caused by linkage constraints. We studied one Arctic pollination network and two Mediterranean seed-dispersal networks. In the first, for example, we recorded flower-visit full season, arranged data in an...
Abstract. The structure of pollination networks is described for two oceanic islands, the Azorean Flores and Mauritian Ile aux Aigrettes. At each island site, all interactions between endemic, non‐endemic native introduced plants pollinators were mapped. Linkage level, i.e. number species per species, was significantly higher endemic than species. levels latter categories similar. Nine types interaction may be recognized among pollinators. Similar had similar frequencies in networks....
Confined within a volcanic caldera at 2000 m a.s.l., the sub‐alpine desert of Tenerife, Canary Islands, harbors distinct biota. At this altitude climate is harsh and growing season short. Hence, plant animal communities, constituting plant–flower‐visitor network, are clearly delimited, both spatially temporally. We investigated species composition interaction structure system. A total 11 (91% endemics) 37 flower‐visiting (62% formed 108 interactions. Numbers interactions among varied...
Pollination networks are representations of all interactions between co‐existing plants and their flower visiting animals at a given site. Although the study has become distinct sub‐discipline in pollination biology, few studies have attempted to quantify spatio‐temporal variation species composition structure networks. We here investigate patterns year‐to‐year change from six different sites spanning large latitudinal gradient. quantified level persistence among years, examined network...
The species richness of insect flower visitors to all angiosperms at a subarctic‐alpine site in northern Sweden was described and the plant‐flower visitor matrix analysed compared other high latitude systems with from lower latitudes. In habitat, 23 plant had total 242 interactions 388 flower‐visiting insects, belonging 118 taxa. Connectance 8.9. Comparing our findings studies, we get that proportion dipteran pollinator fauna increases but proportions Diptera, Hymenoptera Lepidoptera do not...
Recent reviews of plant-pollinator mutualistic networks showed that generalization is a common pattern in this type interaction.Here we examine the ecological correlates patterns networks, especially how interaction covary with latitude, elevation, and insularity.We review few published analyses whole include unpublished material, analyzing 29 complete plantpollinator encompass arctic, alpine, temperate, Mediterranean, subtropical-tropical areas.The number interactions observed (I) was...
Using a sample of 1,403 flowering plant species, we tested the hypothesis that flower openness and flower‐visitor generalization level species correlate positively. The “flower‐visitor level” L n , here defined as number flower‐visiting animal attracted to flowers in given study site, varied enormously among species. Its frequency distribution was extremely skewed. Within also increased with A . In order correct for this, expressed relatively, proportion total fauna site visited (relative...
Abstract Aim Interacting communities of species are organized into complex networks, and network analysis is reckoned to be a strong tool for describing their architecture. Many assemblies show macroecological patterns, e.g. increasing richness with decreasing latitude, but whether this latitudinal diversity gradient scales up entities as networks unknown. We investigated using dataset 54 community‐wide pollination hypothesized that would display altitudinal gradient, specialization towards...
Species in ecological communities build complex webs of interaction. Although revealing the architecture these networks is fundamental to understanding and evolutionary dynamics nature, it has been difficult characterize structure most species-rich systems. By overcoming this limitation through next-generation sequencing technology, we herein uncover network below-ground plant–fungus symbioses, which are ubiquitous terrestrial ecosystems. The examined symbiotic a temperate forest Japan...
Although species and their interactions in unison represent biodiversity all the ecological evolutionary processes associated with life, biotic have, contrary to species, rarely been integrated into concepts of spatial β-diversity. Here, we examine β-diversity networks by using pollination sampled across Canary Islands. We show that adjacent distant communities are more less similar, respectively, composition plants, pollinators than expected from random distributions. further replacement is...
The structure of species interaction networks is important for coexistence, community stability and exposure to extinctions. Two widespread structures in ecological are modularity, i.e. weakly connected subgroups that internally highly interlinked, nestedness, specialist interact with a subset those which generalist also interact. Modularity nestedness often interpreted as evolutionary may have relevance persistence resilience against perturbations, such climate‐change. Therefore, historical...
Alien plants are a growing threat to the Galápagos unique biota. We evaluated impact of alien on eight seed dispersal networks from two islands archipelago. Nearly 10 000 intact seeds 58 species were recovered droppings 18 bird and reptile dispersers. The most dispersed invaders Lantana camara , Rubus niveus Psidium guajava latter likely benefiting an asynchronous fruit production with native plants, which facilitate their consumption spread. Lava lizards 27 species, being important...
Abstract Aim Interaction networks are being increasingly used to evaluate macroecological patterns. We explored a global dataset identify differences in the structure of pollination from islands (of oceanic and continental origin) mainlands. For islands, we further evaluated effects key island traits on network structural parameters. Location Fifty‐two quantitative plant–pollinator ( n = 23), 18) mainlands 11) located world‐wide. Methods The effect geographical origin upon was by means...