Lecture Outlines Natural Disasters, 5th edition
... • Population of organisms so similar in life habits and functions that they can breed together and produce reproductively viable offspring • Reproductively isolated by differences from other species • Share common pool of genetic material (genome) • May migrate over broad area mutation of genes ma ...
... • Population of organisms so similar in life habits and functions that they can breed together and produce reproductively viable offspring • Reproductively isolated by differences from other species • Share common pool of genetic material (genome) • May migrate over broad area mutation of genes ma ...
Coqui Frog - Northwest ISD Moodle
... The Golden Coqui (Eleutheroactylus jasperi) is one of the most important symbols of Puerto Rico. The Coqui (co-key) frog is very small, measuring only one-quarter to one inch long and can jump many feet in a single leap. The color ranges from cream to deep brown, an adaptation to help the Coqui blen ...
... The Golden Coqui (Eleutheroactylus jasperi) is one of the most important symbols of Puerto Rico. The Coqui (co-key) frog is very small, measuring only one-quarter to one inch long and can jump many feet in a single leap. The color ranges from cream to deep brown, an adaptation to help the Coqui blen ...
Early draft of multi-state SAFE Proposal
... Mixed-Grass Prairie Region described in the Oklahoma Comprehensive Wildlife Conservation Strategy, the mixed-grass prairie and the sand sagebrush/bluestem shrubland are two of the four highest priority plant communities. The restoration of these plant communities will provide new acres of habitat th ...
... Mixed-Grass Prairie Region described in the Oklahoma Comprehensive Wildlife Conservation Strategy, the mixed-grass prairie and the sand sagebrush/bluestem shrubland are two of the four highest priority plant communities. The restoration of these plant communities will provide new acres of habitat th ...
Understanding Populations Section 1
... • Exponential growth is logarithmic growth or growth in which numbers increase by a certain factor in each successive time period. • Exponential growth occurs in nature only when populations have plenty of food and space, and have no competition or predators. • For example, population explosions occ ...
... • Exponential growth is logarithmic growth or growth in which numbers increase by a certain factor in each successive time period. • Exponential growth occurs in nature only when populations have plenty of food and space, and have no competition or predators. • For example, population explosions occ ...
Diversity-stability hypothesis
... of direct experimental tests of the hypothesis: resistance to invasion by new species, and temporal stability – the mean value of a variable (usually biomass or productivity), divided by its standard deviation, both calculated over time. The latter measure respects the pre-1970's emphasis on variab ...
... of direct experimental tests of the hypothesis: resistance to invasion by new species, and temporal stability – the mean value of a variable (usually biomass or productivity), divided by its standard deviation, both calculated over time. The latter measure respects the pre-1970's emphasis on variab ...
New record of anuran predation by Trachops cirrhosus (Mammalia
... (COSTA-PEREIRA et al., 2010; CAMPOS; SOUSA, 2014) and crabs (GUTSCHE; ELEPFANDT, 2007), as well as vertebrates, such as fishes, anurans, reptiles, birds and mammals (TOLEDO, 2005; TOLEDO et al., 2007; WELLS, 2007; SOUSA et al., 2016). Osteocephalus oophagus is a medium-sized arborea ...
... (COSTA-PEREIRA et al., 2010; CAMPOS; SOUSA, 2014) and crabs (GUTSCHE; ELEPFANDT, 2007), as well as vertebrates, such as fishes, anurans, reptiles, birds and mammals (TOLEDO, 2005; TOLEDO et al., 2007; WELLS, 2007; SOUSA et al., 2016). Osteocephalus oophagus is a medium-sized arborea ...
Author template for journal articles
... bighorn sheep. Lack of forage has been a contributing factor in the extinction of 30 of the 80 ...
... bighorn sheep. Lack of forage has been a contributing factor in the extinction of 30 of the 80 ...
ecosystem stability
... which in turn eat kelp. In the 1990s, sea otter populations off the coast of Alaska declined because orcas ate large numbers of otters. What effect did this have on the sea otters’ ecosystem? ...
... which in turn eat kelp. In the 1990s, sea otter populations off the coast of Alaska declined because orcas ate large numbers of otters. What effect did this have on the sea otters’ ecosystem? ...
sHort CoMuniCation. first rePort of flesH flY eGGs (diPtera
... from the Cordillera Central of Colombia, in which an individual of Pristimantis thectopternus (Lynch, 1965) was parasitized by a larvae of a Sarcophagid species. This observation was made approximately at 50 km to the southeast of the location of the present record. Despite the information collected ...
... from the Cordillera Central of Colombia, in which an individual of Pristimantis thectopternus (Lynch, 1965) was parasitized by a larvae of a Sarcophagid species. This observation was made approximately at 50 km to the southeast of the location of the present record. Despite the information collected ...
Fragmentation
... (In other words, make sure you’re comparing apples to apples.) 5. There may be time-lagged effects (“extinction debt”). Epilogue: There are both natural and anthropogenic factors that generate landscape patterns. Anthropogenic factors are not "modern," for humans have been modifying their environmen ...
... (In other words, make sure you’re comparing apples to apples.) 5. There may be time-lagged effects (“extinction debt”). Epilogue: There are both natural and anthropogenic factors that generate landscape patterns. Anthropogenic factors are not "modern," for humans have been modifying their environmen ...
F2009B00248 F2009B00248 - Federal Register of Legislation
... Criteria (c). The extent to which the habitat is used by important populations. NB: An important population is one that is necessary for a species’ long-term survival and recovery. This may include populations that are: key source populations either for breeding or dispersal, populations that are ne ...
... Criteria (c). The extent to which the habitat is used by important populations. NB: An important population is one that is necessary for a species’ long-term survival and recovery. This may include populations that are: key source populations either for breeding or dispersal, populations that are ne ...
An Introduction to Ecology and the Biosphere Chapter 50
... tissues of animals. Many of the organisms health will vary leading to many illnesses and deaths. DDT is passed from one organism to another. If an animal contains DDT and is used as prey the predator will then contain the pesticide, and so on and so forth. Thus leading to a chain. (Example of this i ...
... tissues of animals. Many of the organisms health will vary leading to many illnesses and deaths. DDT is passed from one organism to another. If an animal contains DDT and is used as prey the predator will then contain the pesticide, and so on and so forth. Thus leading to a chain. (Example of this i ...
PDF file - Pan-American Journal of Aquatic
... presence of adults´ Cuban Treefrog and toads along the stream sampled during nocturnal surveys. They were usually in shallow waters on the stream banks, at depths where we have also observed specimens of C. gariepinus (> 400 mm total length) foraging at night. Thus, it is expected that such co-occur ...
... presence of adults´ Cuban Treefrog and toads along the stream sampled during nocturnal surveys. They were usually in shallow waters on the stream banks, at depths where we have also observed specimens of C. gariepinus (> 400 mm total length) foraging at night. Thus, it is expected that such co-occur ...
Northern quoll - WWF
... coast. It is now reduced to small populations in the Northern Territory, Western Australia’s Kimberley and Pilbara regions, and Queensland’s Cape York, Wet Tropics and a small area just north of Brisbane. ...
... coast. It is now reduced to small populations in the Northern Territory, Western Australia’s Kimberley and Pilbara regions, and Queensland’s Cape York, Wet Tropics and a small area just north of Brisbane. ...
Habitat Conservation Planning for the Threatened
... long‐term persistence of jays in Charlotte County. • Biological criteria by which the plan is evaluated • The plan, “to the maximum extent practicable”, minimizes and mitigates the impacts.. • The taking will not appreciably reduce the likelihood of survival and recovery of the species in the wild ...
... long‐term persistence of jays in Charlotte County. • Biological criteria by which the plan is evaluated • The plan, “to the maximum extent practicable”, minimizes and mitigates the impacts.. • The taking will not appreciably reduce the likelihood of survival and recovery of the species in the wild ...
Biotic Potential and Species Growth Capacity
... when conditions are favorable or when disturbances open up a new habitat. ...
... when conditions are favorable or when disturbances open up a new habitat. ...
Fulltext PDF - Indian Academy of Sciences
... each vial so positioned that the whole formed a ring of spatially distinct populations. Dispersal of adults between vials occurred 21 days after they were laid as eggs. Dey and Joshi (2006) tested three different dispersal rates between each population and its two immediately neighbouring population ...
... each vial so positioned that the whole formed a ring of spatially distinct populations. Dispersal of adults between vials occurred 21 days after they were laid as eggs. Dey and Joshi (2006) tested three different dispersal rates between each population and its two immediately neighbouring population ...
the effects of amphibian presence and predation on mosquitoes
... Abstract. Due to their importance as vectors of human diseases such as West Nile, dengue, and malaria, extensive scientific research has been done to examine the factors regulating mosquito populations. Mosquito larvae are aquatic and often share habitat with other species, including amphibians. How ...
... Abstract. Due to their importance as vectors of human diseases such as West Nile, dengue, and malaria, extensive scientific research has been done to examine the factors regulating mosquito populations. Mosquito larvae are aquatic and often share habitat with other species, including amphibians. How ...
Behavioral Resource Partitioning among Rana Species in
... This observational method was utilized to minimize the disturbance of each individual and obtain more accurate data on natural behaviors. In order to address the hypothesis that Rana species show preferential habitat selection along a gradient of water availability, the observer noted the area of t ...
... This observational method was utilized to minimize the disturbance of each individual and obtain more accurate data on natural behaviors. In order to address the hypothesis that Rana species show preferential habitat selection along a gradient of water availability, the observer noted the area of t ...
22 Landscape Ecol 2009-2
... A mosaic of habitat types - both terrerestrial and aquatic - of varying shapes and sizes. ...
... A mosaic of habitat types - both terrerestrial and aquatic - of varying shapes and sizes. ...
Change over Time
... certain point, it may not be able to recover One way that this can happen is if a species becomes isolated, cut off geographically from others of its species Another way is habitat loss, when land area available for a species to live decreases due to human activity ...
... certain point, it may not be able to recover One way that this can happen is if a species becomes isolated, cut off geographically from others of its species Another way is habitat loss, when land area available for a species to live decreases due to human activity ...
PPT Slide - Tennessee State University
... as a population drops below K, the birth rate will increase and death rate will decrease. Whether the density-independent stochastic models are relevant to natural populations? They are. 1)Fragmentation by human beings creates many small subpopulation, often so isolated that eventual demise can’t pr ...
... as a population drops below K, the birth rate will increase and death rate will decrease. Whether the density-independent stochastic models are relevant to natural populations? They are. 1)Fragmentation by human beings creates many small subpopulation, often so isolated that eventual demise can’t pr ...
1091-Lec10(TrapA)
... What are the issues about using presence/absence/abundance data to identify critical habitat? What data is needed to determine whether a habitat acts as a source or a sink? ...
... What are the issues about using presence/absence/abundance data to identify critical habitat? What data is needed to determine whether a habitat acts as a source or a sink? ...
Biodiversity, Extinction, and Humanity`s Future
... estimated total of slightly above seven billion. Our species has already experienced and, to a considerable extent, contributed to a significant extinction event, so both prehistoric and historic human actions have already shaped global biology. At issue now is the extent and direction of ongoing hu ...
... estimated total of slightly above seven billion. Our species has already experienced and, to a considerable extent, contributed to a significant extinction event, so both prehistoric and historic human actions have already shaped global biology. At issue now is the extent and direction of ongoing hu ...
Decline in amphibian populations
Since the 1980s, declines in amphibian populations, including population crashes and mass localized extinctions, have been noted from locations all over the world. These declines are perceived as one of the most critical threats to global biodiversity, and several causes are believed to be involved, including disease, habitat destruction and modification, exploitation, pollution, pesticide use, introduced species, and ultraviolet-B radiation (UV-B). However, many of the causes of amphibian declines are still poorly understood, and the topic is currently a subject of much ongoing research. Calculations based on extinction rates suggest that the current extinction rate of amphibians could be 211 times greater than the background extinction rate and the estimate goes up to 25,000–45,000 times if endangered species are also included in the computation.