Grey seal diet composition and prey
... previous analyses of grey seal diet by the Sea Mammal Research Unit. For diet composition, measurements of fish otoliths and cephalopod beaks recovered from scats were used to estimate the weight of prey associated with each structure, which were summed over species and expressed as percentages in t ...
... previous analyses of grey seal diet by the Sea Mammal Research Unit. For diet composition, measurements of fish otoliths and cephalopod beaks recovered from scats were used to estimate the weight of prey associated with each structure, which were summed over species and expressed as percentages in t ...
2005/062 - Vagues/Waves
... Winter skate (Leucoraja ocellata), also known as big or eyed skate, have only been reported in the Northwest Atlantic. Their range extends from the Gulf of St. Lawrence and the southern Newfoundland coast southward to Cape Hatteras. Within this range they have been reported from waters less than 1 m ...
... Winter skate (Leucoraja ocellata), also known as big or eyed skate, have only been reported in the Northwest Atlantic. Their range extends from the Gulf of St. Lawrence and the southern Newfoundland coast southward to Cape Hatteras. Within this range they have been reported from waters less than 1 m ...
Distribution and effects of tree leaf litter on
... below the tips of the outermost branches of the forest edge trees, P4: 2 m away from P3 and P5: 1 m away from P4. The transect length thus varied between 12 and 15 m. Forest edge was defined as the line of 5 m high trees with interlocking branches and a cover >70% (Mueller-Dombois and Ellenberg 1974 ...
... below the tips of the outermost branches of the forest edge trees, P4: 2 m away from P3 and P5: 1 m away from P4. The transect length thus varied between 12 and 15 m. Forest edge was defined as the line of 5 m high trees with interlocking branches and a cover >70% (Mueller-Dombois and Ellenberg 1974 ...
Feral cats: killing 75 million native animals every night
... • We have developed a new method to estimate the abundance of cats by performing mark-recapture analysis after identifying individual cats from their coat patterns (as they appear on infra-red camera traps). Until now, measuring cat densities has been a very rough science based on activity indices f ...
... • We have developed a new method to estimate the abundance of cats by performing mark-recapture analysis after identifying individual cats from their coat patterns (as they appear on infra-red camera traps). Until now, measuring cat densities has been a very rough science based on activity indices f ...
Predicting species` maximum dispersal distances from simple plant
... Although many studies have examined the relationship between plant traits and dispersal distances, few have used a macroecological approach, including species from different regions and with varying dispersal syndromes. There are currently three attempts aiming to generalize relationships between pl ...
... Although many studies have examined the relationship between plant traits and dispersal distances, few have used a macroecological approach, including species from different regions and with varying dispersal syndromes. There are currently three attempts aiming to generalize relationships between pl ...
Adaptive Radiation: The Interaction of Ecological Opportunity
... few lineages. However, nucleotide sequence data now provide an alternative means of reconstructing phylogenetic relationships and the timing of lineage divergence events. With time-calibrated phylogenies, one may ask questions such as whether the occurrence of adaptive radiation is correlated with h ...
... few lineages. However, nucleotide sequence data now provide an alternative means of reconstructing phylogenetic relationships and the timing of lineage divergence events. With time-calibrated phylogenies, one may ask questions such as whether the occurrence of adaptive radiation is correlated with h ...
By: Cody Adkins Charlotte Anderson Michelle Barillas Holly Harlin
... and the black bears that feed on them (Levy, 2006). For many animals, plants provide shelter and protection. With the loss of cover, habitat for songbirds that rely on the understory is impacted (Toops, 1999). Large deer populations not only affect other animal species, but can also affect their own ...
... and the black bears that feed on them (Levy, 2006). For many animals, plants provide shelter and protection. With the loss of cover, habitat for songbirds that rely on the understory is impacted (Toops, 1999). Large deer populations not only affect other animal species, but can also affect their own ...
The Impacts of African Elephant - ScholarWorks@GVSU
... conservation of elephants, and to assist in the control of ivory trade. These protective measured have helped raise awareness for this threatened species and has put a ban on the trade of ivory or other elephant products has been an incredibly successful conservation strategy. Data from the World Wi ...
... conservation of elephants, and to assist in the control of ivory trade. These protective measured have helped raise awareness for this threatened species and has put a ban on the trade of ivory or other elephant products has been an incredibly successful conservation strategy. Data from the World Wi ...
Phytoplankton growth and the interaction of light and temperature: A
... initial slope of the chlorophyll-specific photosynthesis-irradiance curve is sometimes modeled as temperature-insensitive, while the maximum rate of photosynthesis is given an exponential temperature dependence (Geider et al. 1998; Moore et al. 2002). Importantly, the way in which temperature effect ...
... initial slope of the chlorophyll-specific photosynthesis-irradiance curve is sometimes modeled as temperature-insensitive, while the maximum rate of photosynthesis is given an exponential temperature dependence (Geider et al. 1998; Moore et al. 2002). Importantly, the way in which temperature effect ...
landscape-level patterns of avian diversity in the
... Gardner 1991). Patch, landscape, and regional patterns and processes must be accounted for if scientists wish to fully account for species diversity at any given location. There have been many studies of patch-level influences on species diversity and abundance. These studies followed from MacArthur ...
... Gardner 1991). Patch, landscape, and regional patterns and processes must be accounted for if scientists wish to fully account for species diversity at any given location. There have been many studies of patch-level influences on species diversity and abundance. These studies followed from MacArthur ...
Table of Contents - New England Conference Company
... Identifying forest structure to improve landscape connectivity in fragmented landscapes Slopes2Summit Bushlinks - two case studies translating science to action Wompoo Gorge restoration A revegetation strategy using a fragmentation-sensitive generic focal species metapopulation model Effects of inve ...
... Identifying forest structure to improve landscape connectivity in fragmented landscapes Slopes2Summit Bushlinks - two case studies translating science to action Wompoo Gorge restoration A revegetation strategy using a fragmentation-sensitive generic focal species metapopulation model Effects of inve ...
link to thesis - Victoria University of Wellington
... Lastly, I evaluated the potential for fishes to provision demographic feedbacks to macroalgae. Specifically, I conducted a mesocosm experiment to evaluate the effects of fishes on grazing amphipods, and therefore, the potential indirect-effects of fishes on large-brown macroalgae. I found that only ...
... Lastly, I evaluated the potential for fishes to provision demographic feedbacks to macroalgae. Specifically, I conducted a mesocosm experiment to evaluate the effects of fishes on grazing amphipods, and therefore, the potential indirect-effects of fishes on large-brown macroalgae. I found that only ...
International Control of Marine Pollution by Exotic Species
... spread of the zebra mussel. Because the Great Lakes are connected to nearly all of the major American river systems east of the Rockies, it is expected that this infestation soon will extend throughout most of the United States.' 2 The zebra mussel infestation demonstrates that the introduction of a ...
... spread of the zebra mussel. Because the Great Lakes are connected to nearly all of the major American river systems east of the Rockies, it is expected that this infestation soon will extend throughout most of the United States.' 2 The zebra mussel infestation demonstrates that the introduction of a ...
Effects of elevated CO2, nitrogen deposition, and decreased species
... or related mechanisms, creating the potential for interactive effects of environmental change on disease severity (Thompson et al., 1993; Tiedemann & Firsching, 1998). Increased foliar fungal disease severity under environmental change could have large repercussions, because foliar fungal pathogens ...
... or related mechanisms, creating the potential for interactive effects of environmental change on disease severity (Thompson et al., 1993; Tiedemann & Firsching, 1998). Increased foliar fungal disease severity under environmental change could have large repercussions, because foliar fungal pathogens ...
Striped Bass Predation on Bass and Crappie
... bass stomachs and found approximately 95% of the content was shad. Most of these shad were 1-4 inches in size. Seventeen hybrid stripers were also examined for stomach content. These also contained about 93% shad. Filipek (1984) found during a food habit study of Lake Hamilton, Arkansas, the striped ...
... bass stomachs and found approximately 95% of the content was shad. Most of these shad were 1-4 inches in size. Seventeen hybrid stripers were also examined for stomach content. These also contained about 93% shad. Filipek (1984) found during a food habit study of Lake Hamilton, Arkansas, the striped ...
Of Rats and Men - Annenberg Learner
... Thus few plants were well adapted to fire, and most proved vulnerable to it. In contrast, continental species that had evolved in the presence of humankind, or in places where natural fire is much more common, could recover easily after burns, and some could flourish as a result of fire. In short, P ...
... Thus few plants were well adapted to fire, and most proved vulnerable to it. In contrast, continental species that had evolved in the presence of humankind, or in places where natural fire is much more common, could recover easily after burns, and some could flourish as a result of fire. In short, P ...
Impact Assessment of Invasive Plant Species in Selected
... out the field study. We are also indebted to those organizations and individuals, who spent their precious time during consultations, discussions, meetings and field observations. Last but not least we would like to express our gratitude to all individuals who helped us in one way or another. ...
... out the field study. We are also indebted to those organizations and individuals, who spent their precious time during consultations, discussions, meetings and field observations. Last but not least we would like to express our gratitude to all individuals who helped us in one way or another. ...
Chemosensory responses to chemical and visual stimuli in five
... Figure 1. For all conditions and species, a 5 (species) x 5 (conditions) x 10 (min) ANOVA treated species as a between-subjects factor and conditions and minutes as repeatedmeasures factors. All main effects were significant (species: F = 7.69, df = 4,26, p < 0.01; conditions: F = 8.05, df = 4, 104, ...
... Figure 1. For all conditions and species, a 5 (species) x 5 (conditions) x 10 (min) ANOVA treated species as a between-subjects factor and conditions and minutes as repeatedmeasures factors. All main effects were significant (species: F = 7.69, df = 4,26, p < 0.01; conditions: F = 8.05, df = 4, 104, ...
Truly Long-Term Sustainability: An Archaeological Analysis of
... collapse over a multi-millennia time frame and will contribute to implementing new environmental policy that can take into consideration sustainability policies for the truly long term. In this effort, I contribute information regarding oysters from an archaeological shell midden in the Chesapeake a ...
... collapse over a multi-millennia time frame and will contribute to implementing new environmental policy that can take into consideration sustainability policies for the truly long term. In this effort, I contribute information regarding oysters from an archaeological shell midden in the Chesapeake a ...
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.