Ecological drivers of the Ediacaran
... quality of the Bay. Oysters, like many filter-feeding bivalves, package their waste products into excreted pellets or pseudofeces which in turn transfer nitrogen and phosphorus from the phytoplankton to benthic ecosystems (Newell 1988). Such coupling between pelagic and benthic ecosystems increases ...
... quality of the Bay. Oysters, like many filter-feeding bivalves, package their waste products into excreted pellets or pseudofeces which in turn transfer nitrogen and phosphorus from the phytoplankton to benthic ecosystems (Newell 1988). Such coupling between pelagic and benthic ecosystems increases ...
The significance of inter- and intraspecific variation in bacterivorous
... protists at the clonal and the cell level is virtually unknown. The large variations reported in almost every study that measured bacterial ingestion rates by flagellate and ciliate taxa, irrespective of the method used (Table 1), may indicate the significance of individual variability in the feedin ...
... protists at the clonal and the cell level is virtually unknown. The large variations reported in almost every study that measured bacterial ingestion rates by flagellate and ciliate taxa, irrespective of the method used (Table 1), may indicate the significance of individual variability in the feedin ...
Below-ground ectomycorrhizal communities: the effect of small scale
... taxonomic identification of the EMM, which is unidentifiable to species level using morphological methods alone (Agerer 2006). Results from studies comparing belowground ECM roots and the EMM have found that these two methods provide contrasting views of the mycorrhizal communities, thus examination ...
... taxonomic identification of the EMM, which is unidentifiable to species level using morphological methods alone (Agerer 2006). Results from studies comparing belowground ECM roots and the EMM have found that these two methods provide contrasting views of the mycorrhizal communities, thus examination ...
mop4_31_ssap_black_tailed_godwit_0
... again since the mid-1990s (Altenburg & Wymenga 2000, Teunissen et al. 2004). The present annual decline is estimated at c. 5% on a national scale (Teunissen & Soldaat 2006), resulting in a current population of c. 55,000 pairs (data SOVON, W. Teunissen pers. com.). This number may even be lower, as ...
... again since the mid-1990s (Altenburg & Wymenga 2000, Teunissen et al. 2004). The present annual decline is estimated at c. 5% on a national scale (Teunissen & Soldaat 2006), resulting in a current population of c. 55,000 pairs (data SOVON, W. Teunissen pers. com.). This number may even be lower, as ...
here - cloudfront.net
... ANEDO welcomes the opportunity to comment on the Draft EPBC Act referral guidelines for the vulnerable koala (Phasocolarctos cinereus) in Queensland, New South Wales and the Australian Capital Territory (Draft Koala Guidelines or Guidelines). Our submission has been prepared with the assistance of t ...
... ANEDO welcomes the opportunity to comment on the Draft EPBC Act referral guidelines for the vulnerable koala (Phasocolarctos cinereus) in Queensland, New South Wales and the Australian Capital Territory (Draft Koala Guidelines or Guidelines). Our submission has been prepared with the assistance of t ...
Supplementary Materials
... overexpression libraries). The ORF intensities from unselected libraries (five in case of transposon insertion library and three for the overexpression library) were used as control for the quantifying the null distribution of hybridization signals1, 2. The fitness profiles from our four selections ...
... overexpression libraries). The ORF intensities from unselected libraries (five in case of transposon insertion library and three for the overexpression library) were used as control for the quantifying the null distribution of hybridization signals1, 2. The fitness profiles from our four selections ...
Predation in bird populations
... may only be a relatively minor part of population dynamics. Predators frequently affect prey populations indirectly, with the fear of predation resulting in costly behavioural compensation leading to potentially large population and community effects. Large observable lethal effects may then just re ...
... may only be a relatively minor part of population dynamics. Predators frequently affect prey populations indirectly, with the fear of predation resulting in costly behavioural compensation leading to potentially large population and community effects. Large observable lethal effects may then just re ...
Ecology - Hardin County Schools
... populations determine how healthy or stable the populations are. They also study how the individuals of a species interact with each other and how populations interact with the environment. Ecologists look at many factors that help to describe a population. First, ecologists can measure the number o ...
... populations determine how healthy or stable the populations are. They also study how the individuals of a species interact with each other and how populations interact with the environment. Ecologists look at many factors that help to describe a population. First, ecologists can measure the number o ...
Community Ecology 8
... as a group of species utilising the same environmental resources by a similar foraging method. MacMahon et al. simplified the original definition even more by excluding a foraging method. This concept is focused on utilisation patterns of resources by species regardless the purpose of use. Our objec ...
... as a group of species utilising the same environmental resources by a similar foraging method. MacMahon et al. simplified the original definition even more by excluding a foraging method. This concept is focused on utilisation patterns of resources by species regardless the purpose of use. Our objec ...
Influence of Mammalian Herbivory on Woody Plants Dynamics and
... influence species responses to different environmental conditions Functional diversity - Is the value and range of functional traits of the organisms present in a given ecosystem that influence the ecosystem functioning or simply the range and distribution of traits values in a community. Morpho-Fun ...
... influence species responses to different environmental conditions Functional diversity - Is the value and range of functional traits of the organisms present in a given ecosystem that influence the ecosystem functioning or simply the range and distribution of traits values in a community. Morpho-Fun ...
Interindividual Variation in Prey Selection by the Snail Nucella
... The measurement of prey availability In prey selection studies in nature it is important to compare the diet of an individual predator to the relative availability (accessibility) of the various prey species surrounding it. However, it is difficult to define and to measure the specific factors that ...
... The measurement of prey availability In prey selection studies in nature it is important to compare the diet of an individual predator to the relative availability (accessibility) of the various prey species surrounding it. However, it is difficult to define and to measure the specific factors that ...
Assessment of the mosaic structure in the
... Numerous PCR amplification assays have been described for the identification of the CagA EPIYA/T phosphorylation motif, including multiple PCR amplification steps and ethidium-bromide stained agarose gel electrophoresis (summarised in ref [18]). Commonly, amplicons are sequenced using a battery of g ...
... Numerous PCR amplification assays have been described for the identification of the CagA EPIYA/T phosphorylation motif, including multiple PCR amplification steps and ethidium-bromide stained agarose gel electrophoresis (summarised in ref [18]). Commonly, amplicons are sequenced using a battery of g ...
Risk analysis of the fox squirrel Sciurus niger
... evaluation of the probability of organism entry, establishment, spread, and of their potential environmental, economic and social consequences and (3) the risk management stage which involves identifying management options for reducing the risks identified at stage 2 to an acceptable level. These ar ...
... evaluation of the probability of organism entry, establishment, spread, and of their potential environmental, economic and social consequences and (3) the risk management stage which involves identifying management options for reducing the risks identified at stage 2 to an acceptable level. These ar ...
Fire regimes and fire effects in Chilean Araucaria Forests.
... 2) Utilisation of tephra as a chrono-stratigraphic marker in wide-ranging Quaternary paleoenvironmental studies. Recent Andean eruptions (i.e. Puyehue-Cordon Caulle (2011), Chaiten (2008/9) and Hudson (1971/91)) have all clearly shown that hazards associated with these eruptions not only pose a risk ...
... 2) Utilisation of tephra as a chrono-stratigraphic marker in wide-ranging Quaternary paleoenvironmental studies. Recent Andean eruptions (i.e. Puyehue-Cordon Caulle (2011), Chaiten (2008/9) and Hudson (1971/91)) have all clearly shown that hazards associated with these eruptions not only pose a risk ...
Biodiversity and the functioning of seagrass ecosystems
... ecosystems. Several themes emerge from a review of the mostly indirect evidence and the few experiments that explicitly manipulated diversity in seagrass systems. First, because many seagrass communities are dominated by 1 or a few plant species, genetic and phenotypic diversity within such foundati ...
... ecosystems. Several themes emerge from a review of the mostly indirect evidence and the few experiments that explicitly manipulated diversity in seagrass systems. First, because many seagrass communities are dominated by 1 or a few plant species, genetic and phenotypic diversity within such foundati ...
Effects of elevated CO2, nitrogen deposition, and decreased species
... Three components of global change, elevated CO2 , nitrogen addition, and decreased plant species richness (`diversity'), increased the percent leaf area infected by fungi (pathogen load) for much to all of the plant community in one year of a factorial grassland experiment. Decreased plant diversity ...
... Three components of global change, elevated CO2 , nitrogen addition, and decreased plant species richness (`diversity'), increased the percent leaf area infected by fungi (pathogen load) for much to all of the plant community in one year of a factorial grassland experiment. Decreased plant diversity ...
40 Anniversary Conference Gesellschaft für Ökologie
... forms of the district court took place a little bit later. However, I consider the birth of an idea to be much more exciting than its official record. I am thus proud to say that the idea of establishing an ecological society as a platform for bringing together people working in the fields of enviro ...
... forms of the district court took place a little bit later. However, I consider the birth of an idea to be much more exciting than its official record. I am thus proud to say that the idea of establishing an ecological society as a platform for bringing together people working in the fields of enviro ...
Biogeomorphic Impacts of Invasive Species
... 2.2. Ecosystem Engineers, Niche Construction, and Geomorphic Engineers Similarly to the development of biogeomorphology, the concept of ecosystem engineers also has roots back to Darwin’s earthworm work and links to other fundamental ecological concepts such as plant succession (Buchman et al. 2007, ...
... 2.2. Ecosystem Engineers, Niche Construction, and Geomorphic Engineers Similarly to the development of biogeomorphology, the concept of ecosystem engineers also has roots back to Darwin’s earthworm work and links to other fundamental ecological concepts such as plant succession (Buchman et al. 2007, ...
The road toward sympatric speciation in whitefish.
... As size is a key element in this model of speciation, I focused the analyses on changes in size and size-dependent traits in this study. There was a significant change in average size over time in both whitefish populations, with a small but significant increase in Gräsvattnet and a highly significa ...
... As size is a key element in this model of speciation, I focused the analyses on changes in size and size-dependent traits in this study. There was a significant change in average size over time in both whitefish populations, with a small but significant increase in Gräsvattnet and a highly significa ...
Chapter 1 General introduction
... Kolowski et al. (2007) showed that hyena from the Maasai Mara travel on average 12.4 km per night. Length of travel is thought to be dependent on home range size and prey availability. Ranging behavior of hyenas is typically, but not always, nocturnal, with individuals often moving long distances wh ...
... Kolowski et al. (2007) showed that hyena from the Maasai Mara travel on average 12.4 km per night. Length of travel is thought to be dependent on home range size and prey availability. Ranging behavior of hyenas is typically, but not always, nocturnal, with individuals often moving long distances wh ...
The relative dominance hypothesis explains interaction dynamics in mixed species /
... & Weiner 1998). Although the amount of resources available to dominant individuals may also be affected by neighbourhood competition, only weak relationships have been observed in several studies between measures of neighbourhood competition and the growth of larger individuals (Cannell et al. 1984) ...
... & Weiner 1998). Although the amount of resources available to dominant individuals may also be affected by neighbourhood competition, only weak relationships have been observed in several studies between measures of neighbourhood competition and the growth of larger individuals (Cannell et al. 1984) ...
Parasites as predators - University of South Florida
... and dashed arrows indicate interactions which might or might not be direct, depending on whether a parasite consumes host tissue. (b) Interaction diagrams of apparent competition and enemy-mediated facilitation between prey or host species (H) mediated by natural enemies (P). The first row indicates ...
... and dashed arrows indicate interactions which might or might not be direct, depending on whether a parasite consumes host tissue. (b) Interaction diagrams of apparent competition and enemy-mediated facilitation between prey or host species (H) mediated by natural enemies (P). The first row indicates ...
evidence of top-down control
... and plants. However, important predatory interactions may also operate within one trophic level, termed intraguild predation (IGP). Intraguild predation takes place when predators competing for the same resource are also killing and eating each other (Polis et al. 1989). IGP is usually asymmetrical, ...
... and plants. However, important predatory interactions may also operate within one trophic level, termed intraguild predation (IGP). Intraguild predation takes place when predators competing for the same resource are also killing and eating each other (Polis et al. 1989). IGP is usually asymmetrical, ...