Journal of Marine Science - CIEE Research Station Bonaire
... tractus. This condition has been found to be a parasite, although its exact taxonomic identity is still unknown. The study of this parasite has become the point of interest for many researchers because dark spots have now been observed on other herbivorous fish in this region. The current frequency ...
... tractus. This condition has been found to be a parasite, although its exact taxonomic identity is still unknown. The study of this parasite has become the point of interest for many researchers because dark spots have now been observed on other herbivorous fish in this region. The current frequency ...
Options and limitations of statistical modelling as a tool for
... was followed by a gain in functional redundancy, increasing the robustness of the benthic ecosystem to environmental changes. But the potential capacity of the dominant species in brackish water to change for example their feeding behaviour might also affect the capability to detect occurring functi ...
... was followed by a gain in functional redundancy, increasing the robustness of the benthic ecosystem to environmental changes. But the potential capacity of the dominant species in brackish water to change for example their feeding behaviour might also affect the capability to detect occurring functi ...
Temporal and spatial variability in seedling dynamics: a cross
... analysis of overall seedling density described above. We next modelled mortality and relative growth rates in separate analyses. The per capita mortality rate was modelled separately, because increased seedling densities can lead to increases in seedling deaths, without any change to the per capita ...
... analysis of overall seedling density described above. We next modelled mortality and relative growth rates in separate analyses. The per capita mortality rate was modelled separately, because increased seedling densities can lead to increases in seedling deaths, without any change to the per capita ...
Conserving biodiversity and combating desertification: Achieving
... measures that focus on site-specific manifestations of these determinants as well ...
... measures that focus on site-specific manifestations of these determinants as well ...
Notes of the Southeastern Naturalist, Issue 16/1, 2017
... Owl was observed fishing in a river in central Florida (Smith et al. 1983). Although we could not find any study concluding that bats formed a major part of the diet of Barred Owls, a congeneric owl in the British Isles, Strix aluco L. (Tawny Owl), was found to be the most important predator on nati ...
... Owl was observed fishing in a river in central Florida (Smith et al. 1983). Although we could not find any study concluding that bats formed a major part of the diet of Barred Owls, a congeneric owl in the British Isles, Strix aluco L. (Tawny Owl), was found to be the most important predator on nati ...
The Mutualistic Niche
... essential resource that is necessary for a given species to maintain a population (Figure 1c). Above this minimum resource level, also known as R∗ , per capita birth rate exceeds per capita death and the population grows, whereas the reverse occurs below R∗ (Tilman 1976, 1980, 1982). For two limitin ...
... essential resource that is necessary for a given species to maintain a population (Figure 1c). Above this minimum resource level, also known as R∗ , per capita birth rate exceeds per capita death and the population grows, whereas the reverse occurs below R∗ (Tilman 1976, 1980, 1982). For two limitin ...
fires, ecological effects of
... general circulation model (GCM) Computer models developed to simulate global climate and widely used for global climate change predictions. serotiny Seeds stored on the plant with dispersal triggered by fire. ...
... general circulation model (GCM) Computer models developed to simulate global climate and widely used for global climate change predictions. serotiny Seeds stored on the plant with dispersal triggered by fire. ...
Competition, predation and environmental factors as structuring
... Svärdson (1976) and Tonn et al. (1990) attributed the negative relationship between roach and perch biomass in the Finnish data set to competition of roach with perch. My analysis, however, suggests that the abundance relationship between perch and roach is affected by piscivores and cannot solely b ...
... Svärdson (1976) and Tonn et al. (1990) attributed the negative relationship between roach and perch biomass in the Finnish data set to competition of roach with perch. My analysis, however, suggests that the abundance relationship between perch and roach is affected by piscivores and cannot solely b ...
Enos Lake Benthic and Limnetic Threespine Stickleback Species
... Population sizes in Enos Lake were estimated in 2001, based on multiple markrecaptures, but these estimates were confounded by species identification problems due to substantial hybridization that had occurred by that time. When the sample was pooled, the population estimate was 26,630 ± 8,240, whic ...
... Population sizes in Enos Lake were estimated in 2001, based on multiple markrecaptures, but these estimates were confounded by species identification problems due to substantial hybridization that had occurred by that time. When the sample was pooled, the population estimate was 26,630 ± 8,240, whic ...
Fungal alteration of the elemental composition of leaf litter affects
... webs of small forest streams. Shredding macroinvertebrates mostly feed on this litter when it has been colonised and conditioned by microorganisms, especially by aquatic hyphomycetes. Since shredders feed selectively, they must make foraging decisions based on the physical and chemical characteristi ...
... webs of small forest streams. Shredding macroinvertebrates mostly feed on this litter when it has been colonised and conditioned by microorganisms, especially by aquatic hyphomycetes. Since shredders feed selectively, they must make foraging decisions based on the physical and chemical characteristi ...
moreno WR06142.qxd - Federación Galega de Caza
... time; and the censuses were performed at dusk, when rabbit activity aboveground is least affected by environmental factors (Villafuerte et al. 1993). In fact, the KAI values obtained during consecutive censuses were quite stable, with a coefficient of variation of only 3.8 ± 2.3%. Therefore, althoug ...
... time; and the censuses were performed at dusk, when rabbit activity aboveground is least affected by environmental factors (Villafuerte et al. 1993). In fact, the KAI values obtained during consecutive censuses were quite stable, with a coefficient of variation of only 3.8 ± 2.3%. Therefore, althoug ...
Interspecific interactions drive chitin and cellulose degradation by
... same as well as in different treatments, by averaging over time and including replicate within chitin or cellulose media as a random effect (‘lme4’ package in R; R Development Core Team 2013). We fitted models by maximum likelihood and tested the significance of fixed effects (treatment and growth m ...
... same as well as in different treatments, by averaging over time and including replicate within chitin or cellulose media as a random effect (‘lme4’ package in R; R Development Core Team 2013). We fitted models by maximum likelihood and tested the significance of fixed effects (treatment and growth m ...
Biodiversity for kids - Teacher`s Guide
... In simple terms the word biodiversity can be described as the variety of plants and animals (species) and the places they live (ecosystems). In referring to schoolyard biodiversity you will be talking about all the different kinds of plants and animals found in the school. An important aspect of bio ...
... In simple terms the word biodiversity can be described as the variety of plants and animals (species) and the places they live (ecosystems). In referring to schoolyard biodiversity you will be talking about all the different kinds of plants and animals found in the school. An important aspect of bio ...
global strategy on invasive alien species
... 13. No criteria have yet been agreed upon for the minimum damage, spread or size of population needed for an alien species to be considered invasive. However, it is clear that a very small number of individuals, representing a small fraction of the genetic variation of the species in its native rang ...
... 13. No criteria have yet been agreed upon for the minimum damage, spread or size of population needed for an alien species to be considered invasive. However, it is clear that a very small number of individuals, representing a small fraction of the genetic variation of the species in its native rang ...
ABSTRACT ROCKHILL, AIMEE PAULINE. The Ecology of Bobcats
... Aimee Rockhill (formerly Salstead) grew up in Ticonderoga, a small town in the Adirondack Park of upstate New York. Family vacations were usually spent camping at the Schroon Lake camp ground where there was ample opportunity to play in the river, hike on trails, or explore in the woods with her two ...
... Aimee Rockhill (formerly Salstead) grew up in Ticonderoga, a small town in the Adirondack Park of upstate New York. Family vacations were usually spent camping at the Schroon Lake camp ground where there was ample opportunity to play in the river, hike on trails, or explore in the woods with her two ...
- UTas ePrints - University of Tasmania
... Both tropical and subtropical mangrove habitats are recognised worldwide as important nursery habitats for juvenile fish (Weinstein and Brooks, 1983; Wright, 1986; Robertson and Duke, 1987; Little et al., 1988; Chong et al., 1990). Juveniles of many species, including several of commercial importanc ...
... Both tropical and subtropical mangrove habitats are recognised worldwide as important nursery habitats for juvenile fish (Weinstein and Brooks, 1983; Wright, 1986; Robertson and Duke, 1987; Little et al., 1988; Chong et al., 1990). Juveniles of many species, including several of commercial importanc ...
what is needed to protect the caloosahatchee?
... While this document is not all inclusive, it does provide information on some key indicators and highlights management needs. This current draft compendium focuses on recommendations in the literature below that spoke about salinity and flow for these indicators. However, there are many other aspect ...
... While this document is not all inclusive, it does provide information on some key indicators and highlights management needs. This current draft compendium focuses on recommendations in the literature below that spoke about salinity and flow for these indicators. However, there are many other aspect ...
1 Title: Isolation and characterization of polymorphic
... We obtained a similar percentage of cross amplification in phytophagous and predatory mites, which keep far phylogenetic relationships (Navajas et al. 1998b, 1999). This close “clustering” of cross amplification may be related to a parallel evolution or coevolution of phytophagous (prey) and entomop ...
... We obtained a similar percentage of cross amplification in phytophagous and predatory mites, which keep far phylogenetic relationships (Navajas et al. 1998b, 1999). This close “clustering” of cross amplification may be related to a parallel evolution or coevolution of phytophagous (prey) and entomop ...
- The Lincoln Repository
... 2011). This enhanced activity is intriguing in that it contrasts with previous findings of reduced short-distance dispersal of infected Paramecium (Fellous et al. 2011). Moreover, the modified aspect ratio it is associated with should make the energetic cost of locomotion higher for infected Paramec ...
... 2011). This enhanced activity is intriguing in that it contrasts with previous findings of reduced short-distance dispersal of infected Paramecium (Fellous et al. 2011). Moreover, the modified aspect ratio it is associated with should make the energetic cost of locomotion higher for infected Paramec ...
Drivers of CO2 Emission Rates from Dead Wood Logs of 13 Tree
... seems to be an artifact of using local-level mean values in previous studies [33]. Studies on dead wood decomposition rates are often performed on a limited number of tree species with a few cultured fungal species, as an in vitro experiment, or under controlled laboratory conditions. These results ...
... seems to be an artifact of using local-level mean values in previous studies [33]. Studies on dead wood decomposition rates are often performed on a limited number of tree species with a few cultured fungal species, as an in vitro experiment, or under controlled laboratory conditions. These results ...
report of the first meeting of the ad hoc technical expert group
... could be affected by the introduction of the LM mosquitoes; (c) the protection goals of the country where the LM mosquitoes will be introduced; and (d) a conceptual link between the identified protection goals and the introduction of the LM mosquito into the environment. The biology and, to some ext ...
... could be affected by the introduction of the LM mosquitoes; (c) the protection goals of the country where the LM mosquitoes will be introduced; and (d) a conceptual link between the identified protection goals and the introduction of the LM mosquito into the environment. The biology and, to some ext ...
Effect of intra-and interspecific interactions on the feeding behavior
... (daily supplied with medium-sized mussels) over a 2 d period before and after simulated attacks by either interspecifics or plastic (PVC) sea star mimics to determine if the attacks affected feeding rate. The attacks were carried out twice daily (at 10:00 and 17:00 h) over 2 d, and during the attack ...
... (daily supplied with medium-sized mussels) over a 2 d period before and after simulated attacks by either interspecifics or plastic (PVC) sea star mimics to determine if the attacks affected feeding rate. The attacks were carried out twice daily (at 10:00 and 17:00 h) over 2 d, and during the attack ...
Climate and Species Richness Predict the Phylogenetic Structure of
... assemblages across biomes. In addition, a recent paper by Cantalapiedra et al. [20] found that a global distribution of ruminant assemblages were most phylogenetically clustered in three relatively extreme climate domains, the Sahara Desert, the Arabian Desert, and southwestern Arabian savannas. The ...
... assemblages across biomes. In addition, a recent paper by Cantalapiedra et al. [20] found that a global distribution of ruminant assemblages were most phylogenetically clustered in three relatively extreme climate domains, the Sahara Desert, the Arabian Desert, and southwestern Arabian savannas. The ...
NOCTURNAL FORAGING BEHAVIOR OF WINTERING SURF SCOTERS AND WHITE-WINGED SCOTERS ˇ T
... duration of foraging dives (Wanless and Harris 1991, Custer et al. 1996). To determine the appropriate observation duration, radio signals were monitored diurnally for $1 hr. Of all diurnal nondiving periods lasting $5 min (n 5 1320), only 4.5% were $30 min. Therefore, a 30-min observation time was ...
... duration of foraging dives (Wanless and Harris 1991, Custer et al. 1996). To determine the appropriate observation duration, radio signals were monitored diurnally for $1 hr. Of all diurnal nondiving periods lasting $5 min (n 5 1320), only 4.5% were $30 min. Therefore, a 30-min observation time was ...
Predator-induced life-history changes and the coexistence of
... Spaak and Hoekstra 1997). In deeper lakes, which do not completely freeze, hybrids are even known to survive the winter as parthenogenetic individuals (Weider and Stich 1992, Spaak 1996). In fact, detailed studies on life histories of hybrids have shown that as a result of the blend of parental trai ...
... Spaak and Hoekstra 1997). In deeper lakes, which do not completely freeze, hybrids are even known to survive the winter as parthenogenetic individuals (Weider and Stich 1992, Spaak 1996). In fact, detailed studies on life histories of hybrids have shown that as a result of the blend of parental trai ...
Theoretical ecology
Theoretical ecology is the scientific discipline devoted to the study of ecological systems using theoretical methods such as simple conceptual models, mathematical models, computational simulations, and advanced data analysis. Effective models improve understanding of the natural world by revealing how the dynamics of species populations are often based on fundamental biological conditions and processes. Further, the field aims to unify a diverse range of empirical observations by assuming that common, mechanistic processes generate observable phenomena across species and ecological environments. Based on biologically realistic assumptions, theoretical ecologists are able to uncover novel, non-intuitive insights about natural processes. Theoretical results are often verified by empirical and observational studies, revealing the power of theoretical methods in both predicting and understanding the noisy, diverse biological world.The field is broad and includes foundations in applied mathematics, computer science, biology, statistical physics, genetics, chemistry, evolution, and conservation biology. Theoretical ecology aims to explain a diverse range of phenomena in the life sciences, such as population growth and dynamics, fisheries, competition, evolutionary theory, epidemiology, animal behavior and group dynamics, food webs, ecosystems, spatial ecology, and the effects of climate change.Theoretical ecology has further benefited from the advent of fast computing power, allowing the analysis and visualization of large-scale computational simulations of ecological phenomena. Importantly, these modern tools provide quantitative predictions about the effects of human induced environmental change on a diverse variety of ecological phenomena, such as: species invasions, climate change, the effect of fishing and hunting on food network stability, and the global carbon cycle.