REACH Populations
... An increase in ______ tends to correspond with a decrease in ______. A. Infant mortality rate; natality rate B. Average age at marriage; natality rate C. Cost of raising children; infant mortality rates D. Female literacy rates; fertility rate E. Urbanization; cost of raising children ...
... An increase in ______ tends to correspond with a decrease in ______. A. Infant mortality rate; natality rate B. Average age at marriage; natality rate C. Cost of raising children; infant mortality rates D. Female literacy rates; fertility rate E. Urbanization; cost of raising children ...
1091-Lec19(ReintroP)
... Reintroductions: Burrowing Owl Attempt 2 - owls breed, migrate and return ...
... Reintroductions: Burrowing Owl Attempt 2 - owls breed, migrate and return ...
Prehensile-tailed Skink - The Maryland Zoo in Baltimore
... o Young skinks may eat the feces of adults in order to obtain the gut flora (intestinal bacteria) necessary for digestion of their preferred food source. Maturation: Sexual maturity typically achieved around 2 years Activity: Nocturnal o Mainly active at night Social behavior: o Highly unusual ...
... o Young skinks may eat the feces of adults in order to obtain the gut flora (intestinal bacteria) necessary for digestion of their preferred food source. Maturation: Sexual maturity typically achieved around 2 years Activity: Nocturnal o Mainly active at night Social behavior: o Highly unusual ...
Comparative size evolution of marine clades from the Late Permian
... Moreover, the discovery of Early Triassic gastropod specimens larger than any previously known has called the extent and duration of the Early Triassic size reduction into question. Here, we document and compare Permian-Triassic body size trends globally in eight marine clades (gastropods, bivalves, ...
... Moreover, the discovery of Early Triassic gastropod specimens larger than any previously known has called the extent and duration of the Early Triassic size reduction into question. Here, we document and compare Permian-Triassic body size trends globally in eight marine clades (gastropods, bivalves, ...
marine mammals and their environment in the
... Nevertheless, a decrease in prey availability eventually must have an effect on the size of a marine-mammal population. Provided per-capita prey availability remains above a threshold level, a reduction in availability can be compensated for by increasing the amount of time spent foraging. If availa ...
... Nevertheless, a decrease in prey availability eventually must have an effect on the size of a marine-mammal population. Provided per-capita prey availability remains above a threshold level, a reduction in availability can be compensated for by increasing the amount of time spent foraging. If availa ...
The Extinction Crisis
... – Large scale extinctions in Australia coinciding with the arrival of humans (13 thousand years ago) • Lost nearly all of its large mammals, giant snakes, and reptiles • Nearly half of its large flightless birds ...
... – Large scale extinctions in Australia coinciding with the arrival of humans (13 thousand years ago) • Lost nearly all of its large mammals, giant snakes, and reptiles • Nearly half of its large flightless birds ...
Competition with Fisheries
... and Butterworth, 2006). Following the substantial reduction through overexploitation of large whale populations during the early twentieth century, some 50–150 million tons of “surplus” krill is argued to have become available annually to other predators. This “krill surplus” hypothesis (Laws, 1977) ...
... and Butterworth, 2006). Following the substantial reduction through overexploitation of large whale populations during the early twentieth century, some 50–150 million tons of “surplus” krill is argued to have become available annually to other predators. This “krill surplus” hypothesis (Laws, 1977) ...
Decline in top predator body size and changing climate alter trophic
... Our goal was to test whether the aggregate prey biomass responded to intrinsic factors associated with top predator body size, top predator biomass and/or extrinsic oceanographic factors, namely SST and stratification. The model’s dependent variable, the aggregate prey biomass, was the sum of the bi ...
... Our goal was to test whether the aggregate prey biomass responded to intrinsic factors associated with top predator body size, top predator biomass and/or extrinsic oceanographic factors, namely SST and stratification. The model’s dependent variable, the aggregate prey biomass, was the sum of the bi ...
integrating the fossil record in the study of insular body
... Owls (Aves, Strigiformes) constitute one of the best samples for studies including both living and fossil insular bird taxa, including recently extinct, focusing on body size and some allometrical characteristics. For the extant record, around 150 endemic insular taxa, distributed on 230 islands or ...
... Owls (Aves, Strigiformes) constitute one of the best samples for studies including both living and fossil insular bird taxa, including recently extinct, focusing on body size and some allometrical characteristics. For the extant record, around 150 endemic insular taxa, distributed on 230 islands or ...
Life histories
... organism with age and physiological deterioration. Onset of senescence can set an upper age limit for reproduction. Semelparous species undergo very rapid senescence and death following reproduction. ...
... organism with age and physiological deterioration. Onset of senescence can set an upper age limit for reproduction. Semelparous species undergo very rapid senescence and death following reproduction. ...
Appendix S1. Details of Species Distribution Modeling and
... we assumed that this applied to all occupied patches (i.e. no further reduction was applied because the predicted patch sizes for C. verrucosus were small relative to C. greggii patches). This leads to a carrying capacity estimate of 1,173 per ha for age 60+ shrubs. While these values may underestim ...
... we assumed that this applied to all occupied patches (i.e. no further reduction was applied because the predicted patch sizes for C. verrucosus were small relative to C. greggii patches). This leads to a carrying capacity estimate of 1,173 per ha for age 60+ shrubs. While these values may underestim ...
Section 32.1 Summary – pages 841 - 847
... • The mass extinction of the dinosaurs at the end of the Mesozoic Era, along with the breaking apart of Pangaea and changes in climate, opened up new niches for early mammals to fill. • The Cenozoic Era is sometimes called the golden age of mammals because of the dramatic increase in their numbers a ...
... • The mass extinction of the dinosaurs at the end of the Mesozoic Era, along with the breaking apart of Pangaea and changes in climate, opened up new niches for early mammals to fill. • The Cenozoic Era is sometimes called the golden age of mammals because of the dramatic increase in their numbers a ...
What information can a Forensic Entomologist provide at the death
... What information can a Forensic Entomologist provide at the death scene? Forensic entomologists are commonly called upon to determine the postmortem interval or "time since death" in homicide investigations. More specifically, the forensic entomologist estimates a portion of the postmortem interval ...
... What information can a Forensic Entomologist provide at the death scene? Forensic entomologists are commonly called upon to determine the postmortem interval or "time since death" in homicide investigations. More specifically, the forensic entomologist estimates a portion of the postmortem interval ...
Module 4: Sustainability and Extinction
... rounder, blacker, and have a better taste when cooked.’ Their size, up to 250 kilograms, made them an ideal target for replenishing meat stocks during long sea voyages of the 19th century. Their numbers were thus reduced over the centuries. The Galapagos hawk is one of the top predators and feeds on ...
... rounder, blacker, and have a better taste when cooked.’ Their size, up to 250 kilograms, made them an ideal target for replenishing meat stocks during long sea voyages of the 19th century. Their numbers were thus reduced over the centuries. The Galapagos hawk is one of the top predators and feeds on ...
BIO 133 Zusammenfassung.pages
... • Male-male competition. Jealousy for males is about sexual infidelity, for females more about emotional infidelity (= commitment)! • Both sexes are choosy, because they form long term relationships, strong male parental investments. Females are more often concerned about direct benefits („salary“), ...
... • Male-male competition. Jealousy for males is about sexual infidelity, for females more about emotional infidelity (= commitment)! • Both sexes are choosy, because they form long term relationships, strong male parental investments. Females are more often concerned about direct benefits („salary“), ...
Ziv 2000
... explicit spatial variable for habitat quality that reflects the match between a habitat and a population (species–habitat match), and (2) a demand/supply function that depends on the ratio between the energy used by all populations occurring in a habitat, and energy available in that habitat. Energy ...
... explicit spatial variable for habitat quality that reflects the match between a habitat and a population (species–habitat match), and (2) a demand/supply function that depends on the ratio between the energy used by all populations occurring in a habitat, and energy available in that habitat. Energy ...
Where The Wild Extinctions Are
... passes the reasonability test -- for example, we would expect to find more species in a state than we find in any one county in that state. Does this species-area relationship work in reverse? That is to say, if the area of a forest is reduced, does the number of species in the forest decrease as we ...
... passes the reasonability test -- for example, we would expect to find more species in a state than we find in any one county in that state. Does this species-area relationship work in reverse? That is to say, if the area of a forest is reduced, does the number of species in the forest decrease as we ...
guyana- the mysterious land of giants
... are longer than the claws of a brown bear. They protrude from yellow feet as large as a human hand. Harpy Eagles are found in tropical lowland forests from southeastern Mexico through Central and South America to Paraguay and northern Argentina. However, due to extensive deforestation, severe habita ...
... are longer than the claws of a brown bear. They protrude from yellow feet as large as a human hand. Harpy Eagles are found in tropical lowland forests from southeastern Mexico through Central and South America to Paraguay and northern Argentina. However, due to extensive deforestation, severe habita ...
Mean extinction time of populations under toxicant stress and
... The ultimate goal of ecological risk assessment is to characterize and quantify hazards of pollutant chemicals to ecosystems so that the relative importance among chemicals in terms of hazard to ecosystems is evaluated. In order to quantify the ecological risk, it must be transferred into a universa ...
... The ultimate goal of ecological risk assessment is to characterize and quantify hazards of pollutant chemicals to ecosystems so that the relative importance among chemicals in terms of hazard to ecosystems is evaluated. In order to quantify the ecological risk, it must be transferred into a universa ...
- Island Biodiversity
... was barely in three figures, and the island had plenty of impenetrable forest and many wetlands/swamps, so overhunting is unlikely to have been a major factor for birds, though in Réunion the limited wetlands and larger human population would have made hunting a more important factor for waterbirds. ...
... was barely in three figures, and the island had plenty of impenetrable forest and many wetlands/swamps, so overhunting is unlikely to have been a major factor for birds, though in Réunion the limited wetlands and larger human population would have made hunting a more important factor for waterbirds. ...
Biology 423 – Exam # 1
... 20. Pirt’s study on bioremediation with bacteria did which of the following? a) developed techniques for breaking down horse manure b) used thermophilic bacteria and bacteria active at 37 degrees c) converted almost all of the organic matter to water and oxygen d) none of the above 21. Which predic ...
... 20. Pirt’s study on bioremediation with bacteria did which of the following? a) developed techniques for breaking down horse manure b) used thermophilic bacteria and bacteria active at 37 degrees c) converted almost all of the organic matter to water and oxygen d) none of the above 21. Which predic ...
Body size and intelligence - Anthropology
... Variation among mammal species in relative brain size and cognitive potential suggests that selection for overall or regional brain size increase affects metabolic rate or metabolic tradeoffs within an organism. A species under selective pressure to increase its cognitive complexity may experience s ...
... Variation among mammal species in relative brain size and cognitive potential suggests that selection for overall or regional brain size increase affects metabolic rate or metabolic tradeoffs within an organism. A species under selective pressure to increase its cognitive complexity may experience s ...
(3) 381 Animals to Prosimians and Tarsiers
... Facial expression: less range possible (than for Haplorhini), partially because of attached upper lip Grooming "claw" on pedal digit (2nd digit) Teeth –! dental formula (with some exceptions): 2133/2133 –! dental comb: elongated incisors used for grooming –! NOTE: these adaptations for autogrooming ...
... Facial expression: less range possible (than for Haplorhini), partially because of attached upper lip Grooming "claw" on pedal digit (2nd digit) Teeth –! dental formula (with some exceptions): 2133/2133 –! dental comb: elongated incisors used for grooming –! NOTE: these adaptations for autogrooming ...
Page numbers can be shown as a footer They are usually of
... replicate standardised dung pads, leading Sowig and Wassmer (1994) to comment that, "A common method in experimental dung beetle ecology is to exclude the influence of patch size..." However, under natural conditions, pad quality, size and morphology can be observed to vary considerably. Dung pad si ...
... replicate standardised dung pads, leading Sowig and Wassmer (1994) to comment that, "A common method in experimental dung beetle ecology is to exclude the influence of patch size..." However, under natural conditions, pad quality, size and morphology can be observed to vary considerably. Dung pad si ...
Megafauna
In terrestrial zoology, megafauna (Ancient Greek megas ""large"" + New Latin fauna ""animal"") are large or giant animals. The most common thresholds used are 45 kilograms (100 lb) or 100 kilograms (220 lb). This thus includes many species not popularly thought of as overly large, such as white-tailed deer, red kangaroo, and humans.In practice, the most common usage encountered in academic and popular writing describes land animals roughly larger than a human that are not (solely) domesticated. The term is especially associated with the Pleistocene megafauna – the land animals often larger than modern counterparts considered archetypical of the last ice age, such as mammoths, the majority of which in northern Eurasia, the Americas and Australia became extinct as recently as 10,000–40,000 years ago. It is also commonly used for the largest extant wild land animals, especially elephants, giraffes, hippopotamuses, rhinoceroses, and large bovines. Megafauna may be subcategorized by their trophic position into megaherbivores (e.g., elk), megacarnivores (e.g., lions), and, more rarely, megaomnivores (e.g., bears).Other common uses are for giant aquatic species, especially whales, any larger wild or domesticated land animals such as larger antelope and cattle, as well as numerous dinosaurs and other extinct giant reptilians.The term is also sometimes applied to animals (usually extinct) of great size relative to a more common or surviving type of the animal, for example the 1 m (3 ft) dragonflies of the Carboniferous period.