Population-Level Metrics of Trophic Structure Based on
... metrics were adapted from community–level metrics developed originally by Layman et al. [12] based on the mean d13C and d15N of all species in a community. We used the stable isotope values from all individuals sampled in these calculations, resulting in final metric values encompassing intra-popula ...
... metrics were adapted from community–level metrics developed originally by Layman et al. [12] based on the mean d13C and d15N of all species in a community. We used the stable isotope values from all individuals sampled in these calculations, resulting in final metric values encompassing intra-popula ...
Direct and Indirect Ecosystem Effects of Evolutionary
... further through indirect ecological pathways. Even less well understood is how the combination of direct and indirect ecological effects of the phenotype promotes or inhibits evolutionary change. We coupled mesocosm experiments and ecosystem modeling to evaluate the ecological effects of local adapt ...
... further through indirect ecological pathways. Even less well understood is how the combination of direct and indirect ecological effects of the phenotype promotes or inhibits evolutionary change. We coupled mesocosm experiments and ecosystem modeling to evaluate the ecological effects of local adapt ...
Full-Text PDF
... and streams for management of water resources. These structures alter the physical properties of rivers and riverine environments, and affects water quality by slowing down its flow. They also affect the movement of migratory fish by reducing the longitudinal connectivity of the river [1,2]. Adverse ...
... and streams for management of water resources. These structures alter the physical properties of rivers and riverine environments, and affects water quality by slowing down its flow. They also affect the movement of migratory fish by reducing the longitudinal connectivity of the river [1,2]. Adverse ...
An Historical Phytogeography of the High Andean Flora*
... 5200 m and above, the number of hours of freezing per day increases to the point at which the ground becomes permanently frozen and growth for rooted plants becomes impossible. Below this zone, there is often freezing at the soil surface, reducing the amount of water that can be absorbed. Mean night ...
... 5200 m and above, the number of hours of freezing per day increases to the point at which the ground becomes permanently frozen and growth for rooted plants becomes impossible. Below this zone, there is often freezing at the soil surface, reducing the amount of water that can be absorbed. Mean night ...
effects of algal and herbivore diversity on the partitioning of biomass
... tioned, reflect the availability of limiting resources (Holt et al. 1994). Other studies treat diversity as an independent rather than a dependent variable, and emphasize the importance of species diversity in determining the total biomass and productivity of a system (Loreau et al. 2001, Hector and ...
... tioned, reflect the availability of limiting resources (Holt et al. 1994). Other studies treat diversity as an independent rather than a dependent variable, and emphasize the importance of species diversity in determining the total biomass and productivity of a system (Loreau et al. 2001, Hector and ...
ecological value of floodplain habitats to razorback suckers in the
... Acquisition with the intent of preserving existing floodplains that are still functional will help maintain the existing integrity of the riverfloodplain ecosystem. Reconnection of floodplain habitats appears to be critical to increase larval razorback sucker survival during their critical period so ...
... Acquisition with the intent of preserving existing floodplains that are still functional will help maintain the existing integrity of the riverfloodplain ecosystem. Reconnection of floodplain habitats appears to be critical to increase larval razorback sucker survival during their critical period so ...
Fungal alteration of the elemental composition of leaf litter affects
... We hypothesised that variation in leaf litter resource quality, defined here as leaf litter elemental composition, would change consumer feeding performance, with consequences for the rate of leaf litter breakdown as a major ecological process in detritus-based headwater streams. We tested this hypo ...
... We hypothesised that variation in leaf litter resource quality, defined here as leaf litter elemental composition, would change consumer feeding performance, with consequences for the rate of leaf litter breakdown as a major ecological process in detritus-based headwater streams. We tested this hypo ...
UvA-DARE (Digital Academic Repository) Feeding of detritivores in
... componentss that are released from decaying organic matter. Benthic microbial activity andd biomass are observed to increase within hours after sedimentation of algae (Graf 1992).. In aerobic environments, aquatic hyphomycetes are dominant during the early stagess of decomposition of plant matter. T ...
... componentss that are released from decaying organic matter. Benthic microbial activity andd biomass are observed to increase within hours after sedimentation of algae (Graf 1992).. In aerobic environments, aquatic hyphomycetes are dominant during the early stagess of decomposition of plant matter. T ...
Availability and characterization of cavities used by pacas
... Mendoza, & González). Natural cavities underneath roots, hollow trunks, crevices and gaps between rocks and holes created by other animals may be adapted and used by pacas (Cuniculus paca) as burrows (Aquino, Meléndez, Pezo, & Gil, 2012; Pérez, 1992). The paca is a large rodent, solitary and nocturn ...
... Mendoza, & González). Natural cavities underneath roots, hollow trunks, crevices and gaps between rocks and holes created by other animals may be adapted and used by pacas (Cuniculus paca) as burrows (Aquino, Meléndez, Pezo, & Gil, 2012; Pérez, 1992). The paca is a large rodent, solitary and nocturn ...
Life-history evolution in the anthropocene: effects of
... Figure 1 Possible effects of changes in nutrient availability on nutrition at higher trophic levels. Nitrogen, phosphorus, calcium, and sodium from human activities are readily available to organisms. Changes in nutrient availability can affect both the nutritional quality and quantity of resources, ...
... Figure 1 Possible effects of changes in nutrient availability on nutrition at higher trophic levels. Nitrogen, phosphorus, calcium, and sodium from human activities are readily available to organisms. Changes in nutrient availability can affect both the nutritional quality and quantity of resources, ...
LITERATURE STUDY: SHOREBIRDS AND THEIR ABIOTIC
... As a rule, there is a positive correlation between densities of shorebirds and their prey as found by, for example, Goss-Custard (1970), Zwarts (1981), Esselink (1982), Roukema (1984), Meire (1993), Kalejta & Hockey (1993) and Yates et al. (1993). However, the strength of these relations varies amon ...
... As a rule, there is a positive correlation between densities of shorebirds and their prey as found by, for example, Goss-Custard (1970), Zwarts (1981), Esselink (1982), Roukema (1984), Meire (1993), Kalejta & Hockey (1993) and Yates et al. (1993). However, the strength of these relations varies amon ...
Ecology Practice Test Name
... A. Heat affects all locations on Earth at the same elevation in the same way. B. Ocean temperatures do not change very much from day to night C. Land temperatures will change quite a bit from day to night. D. Temperature is affected by latitude and elevation. ____ 23. Which of the following features ...
... A. Heat affects all locations on Earth at the same elevation in the same way. B. Ocean temperatures do not change very much from day to night C. Land temperatures will change quite a bit from day to night. D. Temperature is affected by latitude and elevation. ____ 23. Which of the following features ...
Genetic structure of the Daphnia longispina complex in European
... almost all over the world. Their body size is species-dependent (mm ranges), large enough to be handled individually but small enough for large-scale experiments. Daphnia are easy to culture, can be easily kept in the laboratory as clonal lineages, have a short generation time; therefore large popul ...
... almost all over the world. Their body size is species-dependent (mm ranges), large enough to be handled individually but small enough for large-scale experiments. Daphnia are easy to culture, can be easily kept in the laboratory as clonal lineages, have a short generation time; therefore large popul ...
Lourenco_with_editor_changes - DIGITAL.CSIC, el repositorio
... variation in their context and how terms have been applied, but also to the introduction of additional ...
... variation in their context and how terms have been applied, but also to the introduction of additional ...
Selective feeding behaviour of key free
... consider all unicellular eukaryotes that ingest (phagocytise) organic matter as part or all of their source of energy as ‘phagotrophic protists’. In particular, we ...
... consider all unicellular eukaryotes that ingest (phagocytise) organic matter as part or all of their source of energy as ‘phagotrophic protists’. In particular, we ...
Ben-Gurion University of the Negev
... 1.2 Diversity of insectivorous bats in association with water sources Among terrestrial mammals, bats play key roles in temperate and tropical ecosystems. This is due to their large number of species (species richness), enormous numbers of individuals, mobility, geographical distribution, and their ...
... 1.2 Diversity of insectivorous bats in association with water sources Among terrestrial mammals, bats play key roles in temperate and tropical ecosystems. This is due to their large number of species (species richness), enormous numbers of individuals, mobility, geographical distribution, and their ...
Anti-predator Adaptations in Aquatic Environments
... Because the evolution of life has begun in the aquatic environment and many anti-predator adaptations are found already in relative primitive taxa, it is likely that many of these adaptations evolved initially in the aquatic environment. Yet, there has been surprisingly little research on the mechan ...
... Because the evolution of life has begun in the aquatic environment and many anti-predator adaptations are found already in relative primitive taxa, it is likely that many of these adaptations evolved initially in the aquatic environment. Yet, there has been surprisingly little research on the mechan ...
the daily feeding dynamics in various length groups
... Durbin, E ., Durbin,A., Langton, R. and Bowman, R. 1983. Stomach contents of silver hake, Merluccius bilinearis, and Atlantic cod, Gadus morhua, and estimation of their daily rations. U.S. Fish. Bull. 81:437454. Elliot, J. and Persson, L. 1978. The estimation of daily rates of food consumption for f ...
... Durbin, E ., Durbin,A., Langton, R. and Bowman, R. 1983. Stomach contents of silver hake, Merluccius bilinearis, and Atlantic cod, Gadus morhua, and estimation of their daily rations. U.S. Fish. Bull. 81:437454. Elliot, J. and Persson, L. 1978. The estimation of daily rates of food consumption for f ...
Env Sc chapter 5 revision
... a. eat only other animal species. b. get solar or other energy indirectly. c. are also known as self-feeders. d. occupy an ecosystem’s lowest energy level. ____ 13. The energy consumed by organisms a. can be stored in fat and sugar molecules. b. remains constant at all trophic levels. c. undergoes m ...
... a. eat only other animal species. b. get solar or other energy indirectly. c. are also known as self-feeders. d. occupy an ecosystem’s lowest energy level. ____ 13. The energy consumed by organisms a. can be stored in fat and sugar molecules. b. remains constant at all trophic levels. c. undergoes m ...
Resource Heterogeneity Moderates the Biodiversity
... Numerous recent studies have tested the effects of plant, pollinator, and predator diversity on primary productivity, pollination, and consumption, respectively. Many have shown a positive relationship, particularly in controlled experiments, but variability in results has emphasized the context-dep ...
... Numerous recent studies have tested the effects of plant, pollinator, and predator diversity on primary productivity, pollination, and consumption, respectively. Many have shown a positive relationship, particularly in controlled experiments, but variability in results has emphasized the context-dep ...
Food web assembly along salt marsh succession
... Herbivores influence succession Firstly, during winter, hares set back succession for >25 years by delaying the bushy Atriplex portulacoides encroachment and thereby facilitating brent geese. By feeding on Atriplex, hares create space for the earlier succession plant Puccinellia,maritima on which br ...
... Herbivores influence succession Firstly, during winter, hares set back succession for >25 years by delaying the bushy Atriplex portulacoides encroachment and thereby facilitating brent geese. By feeding on Atriplex, hares create space for the earlier succession plant Puccinellia,maritima on which br ...