Evolution through natural selection
... not occur if reproduction does not produce more progeny than can survive, it will not occur if a character does not show variation, and it will not occur if variation does not have a heritable basis. To say that the three conditions are sufficient means that, if all three conditions are met, natural ...
... not occur if reproduction does not produce more progeny than can survive, it will not occur if a character does not show variation, and it will not occur if variation does not have a heritable basis. To say that the three conditions are sufficient means that, if all three conditions are met, natural ...
Characterization of Complementary DNA Encoding the Precursor for
... associated peptide, cGAP, shows little if any relation to mGAP; five residues may be appropriately aligned, with no more than two contiguously. However, a single base insertion within cGAP generates a potential peptide sequence with a significant block of homology to a conserved region of the mammal ...
... associated peptide, cGAP, shows little if any relation to mGAP; five residues may be appropriately aligned, with no more than two contiguously. However, a single base insertion within cGAP generates a potential peptide sequence with a significant block of homology to a conserved region of the mammal ...
для самостоятельной работы - Кубанский государственный
... As a result many species of animals and plants disappear forever, including fish and birds. Many large cities suffer from factory smog. Their activity pollutes the air, the water, the forests and the land. Apart from factories there are lots of vehicles in the streets of every more or less developed ...
... As a result many species of animals and plants disappear forever, including fish and birds. Many large cities suffer from factory smog. Their activity pollutes the air, the water, the forests and the land. Apart from factories there are lots of vehicles in the streets of every more or less developed ...
State of the Art Report - 4rd. draft
... construction and operation is lacking, the species with the following attributes are considered to be most vulnerable to disturbance and development impacts (Hill et al., 1997): large species; long-lived species; species with relatively low reproductive rates; habitat specialists; species living in ...
... construction and operation is lacking, the species with the following attributes are considered to be most vulnerable to disturbance and development impacts (Hill et al., 1997): large species; long-lived species; species with relatively low reproductive rates; habitat specialists; species living in ...
Isolation, cloning and sequence analysis of the lactate
... The enzyme Taq DNA Polymerase was used to amplify the DNA. This polymerase often adds a single deoxyadenosine to the 3’-end of the amplified fragments which makes these products suitable for use for T vector cloning. The reaction mixture contained 5 µl of Taq DNA Polymerase buffer, which is supplied ...
... The enzyme Taq DNA Polymerase was used to amplify the DNA. This polymerase often adds a single deoxyadenosine to the 3’-end of the amplified fragments which makes these products suitable for use for T vector cloning. The reaction mixture contained 5 µl of Taq DNA Polymerase buffer, which is supplied ...
Interim koala referral advice for proponents
... area, there would be no need to undertake a koala survey or habitat assessment. Where the PMST indicates that koalas may be present, but there is little or no information available on koala populations and habitat in your study area, you should conduct both a habitat assessment and a koala survey (s ...
... area, there would be no need to undertake a koala survey or habitat assessment. Where the PMST indicates that koalas may be present, but there is little or no information available on koala populations and habitat in your study area, you should conduct both a habitat assessment and a koala survey (s ...
Arion vulgaris - the aetiology of an invasive species
... until December if temperatures remain above 5°C. The exact time varies depending on geographical region and also fluctuates between years within a given area (KOZŁOWSKI & KOZŁOWSKI 2000, GRIMM 2001). Spanish slugs can lay a total of 400-500 eggs in batches with a mean size of 67.3 (KOZŁOWSKI 2007, S ...
... until December if temperatures remain above 5°C. The exact time varies depending on geographical region and also fluctuates between years within a given area (KOZŁOWSKI & KOZŁOWSKI 2000, GRIMM 2001). Spanish slugs can lay a total of 400-500 eggs in batches with a mean size of 67.3 (KOZŁOWSKI 2007, S ...
methods - San Francisco State University
... special status species (Goals Project 1999; Olofson 2000). In addition to the ecological value of the BayDelta, the Delta’s freshwater storage and transport system is vital to California’s economy, providing water to meet agricultural, municipal, industrial, and environmental demands. The Bay-Delta ...
... special status species (Goals Project 1999; Olofson 2000). In addition to the ecological value of the BayDelta, the Delta’s freshwater storage and transport system is vital to California’s economy, providing water to meet agricultural, municipal, industrial, and environmental demands. The Bay-Delta ...
Trophically Unique Species Are Vulnerable to Cascading Extinction Linköping University Postprint
... in relatively sparsely connected food webs, the opposite may be true in more complex ones. There, moreconnected species can suffer greater risk of secondary extinction, possibly because they experience a greater number of indirect effects. Such a pattern has been observed in both model (Eklöf and E ...
... in relatively sparsely connected food webs, the opposite may be true in more complex ones. There, moreconnected species can suffer greater risk of secondary extinction, possibly because they experience a greater number of indirect effects. Such a pattern has been observed in both model (Eklöf and E ...
Competition - Mark A. Hixon
... resources within the same general habitat. Ebeling and Hixon (1991) review the basic guilds of demersal marine fishes, including many examples from California. Resource partitioning occurs when species within a guild utilize shared resource categories in at least slightly different ways (review by S ...
... resources within the same general habitat. Ebeling and Hixon (1991) review the basic guilds of demersal marine fishes, including many examples from California. Resource partitioning occurs when species within a guild utilize shared resource categories in at least slightly different ways (review by S ...
High Forest or Wood Pasture: A model of Large Herbivores
... open (Kirby 2003). This hypothesis can be traced back to the middle of last century, when Watt (1947) presented his gap-phase model to describe how small scale forest regeneration takes place in canopy gaps. It was later proposed by vegetation historians based on fossil pollen preserved in pear and ...
... open (Kirby 2003). This hypothesis can be traced back to the middle of last century, when Watt (1947) presented his gap-phase model to describe how small scale forest regeneration takes place in canopy gaps. It was later proposed by vegetation historians based on fossil pollen preserved in pear and ...
Definitions of terms relating to biological diversity
... including sodium and potassium, that neutralises acids to form salts; any active base Alkaline: (adj) characterising a solution with a pH greater than 7 Allele: (n) gene or DNA sequence at a locus where alternative forms are known to exist Allopatric: (adj) having non-overlapping ranges of distribut ...
... including sodium and potassium, that neutralises acids to form salts; any active base Alkaline: (adj) characterising a solution with a pH greater than 7 Allele: (n) gene or DNA sequence at a locus where alternative forms are known to exist Allopatric: (adj) having non-overlapping ranges of distribut ...
Wellborn et al. (1996)
... that overall body plan differences associated with higher order taxonomic classification do not usually represent constraints to use of different habitat types, but if constraints do exist, they occur among species, genera, and families. The integration of restricted species distributions across the ...
... that overall body plan differences associated with higher order taxonomic classification do not usually represent constraints to use of different habitat types, but if constraints do exist, they occur among species, genera, and families. The integration of restricted species distributions across the ...
Conservation Plan for the American Oystercatcher
... limited value in identifying key breeding sites. For the time being, these have been defined as sites holding 20 or more breeding pairs; 17 such sites have been identified, with all but 4 in the ...
... limited value in identifying key breeding sites. For the time being, these have been defined as sites holding 20 or more breeding pairs; 17 such sites have been identified, with all but 4 in the ...
Literature Cited
... areas, while all others are fairly remote. After initial population estimates were obtained, Cuban treefrogs were removed from sites to examine the recovery of native populations. Additionally, predation of hylids by Cuban treefrogs was quantified through stomach content analysis of removed animals. ...
... areas, while all others are fairly remote. After initial population estimates were obtained, Cuban treefrogs were removed from sites to examine the recovery of native populations. Additionally, predation of hylids by Cuban treefrogs was quantified through stomach content analysis of removed animals. ...
PPT - Wildlife Ecology and Conservation
... • Difficult to determine populations – Yearling ewes and male lambs same size by late summer – 1-2 year old rams same size as ewes and same horns ...
... • Difficult to determine populations – Yearling ewes and male lambs same size by late summer – 1-2 year old rams same size as ewes and same horns ...
Using Natural Range of Variation to Set Decision Thresholds: A
... been used to estimate the NRV of net ecosystem production, fire, and landscape dynamics, for example (Baker 1992; Sierra et al. 2007; Doyon et al. 2008). Models have the advantage of being able to cover a wide range of possible conditions that other methods may not, but they must be adequately calib ...
... been used to estimate the NRV of net ecosystem production, fire, and landscape dynamics, for example (Baker 1992; Sierra et al. 2007; Doyon et al. 2008). Models have the advantage of being able to cover a wide range of possible conditions that other methods may not, but they must be adequately calib ...
gopher tortoise - Wildlife Resources Division
... predators at most sites. Survey Recommendations: Gopher tortoises are best located by conducting pedestrian searches for their distinctive burrows. Burrow openings are half-moon shaped and an apron of excavated sand fans out in front of the opening. Active burrows (those most likely to have a reside ...
... predators at most sites. Survey Recommendations: Gopher tortoises are best located by conducting pedestrian searches for their distinctive burrows. Burrow openings are half-moon shaped and an apron of excavated sand fans out in front of the opening. Active burrows (those most likely to have a reside ...
Species diversity: from global decreases to local increases
... biodiversity at global, regional and local scales. At global scales, habitat destruction and the introduction of exotic species are contributing to declines in species diversity. At regional and local scales, evidence for declines in diversity is mixed, and recent work suggests that diversity might ...
... biodiversity at global, regional and local scales. At global scales, habitat destruction and the introduction of exotic species are contributing to declines in species diversity. At regional and local scales, evidence for declines in diversity is mixed, and recent work suggests that diversity might ...
assessment
... Australia, New South Wales and Victoria, and possibly extended north along the east coast into Queensland, the remnant of this population now being accepted as Bettongia tropica. Woylies also occurred on Saint Francis and St Peter Islands, South Australia (Robinson et al. 1996). Burbidge et al. (200 ...
... Australia, New South Wales and Victoria, and possibly extended north along the east coast into Queensland, the remnant of this population now being accepted as Bettongia tropica. Woylies also occurred on Saint Francis and St Peter Islands, South Australia (Robinson et al. 1996). Burbidge et al. (200 ...
Highly similar microbial communities are shared among related and
... Ants dominate many terrestrial ecosystems, yet we know little about their nutritional physiology and ecology. While traditionally viewed as predators and scavengers, recent isotopic studies revealed that many dominant ant species are functional herbivores. As with other insects with nitrogen-poor di ...
... Ants dominate many terrestrial ecosystems, yet we know little about their nutritional physiology and ecology. While traditionally viewed as predators and scavengers, recent isotopic studies revealed that many dominant ant species are functional herbivores. As with other insects with nitrogen-poor di ...
Biodiversity of Rangelands - Society For Range Management
... brush steppe ecosystem, the nutritional quality of available forage was reduced, the intensity and frequency of ...
... brush steppe ecosystem, the nutritional quality of available forage was reduced, the intensity and frequency of ...
Large Species Shifts Triggered by Small Forces
... to proceed gradually at first sight, but remarkably rapid shifts are known to occur. Although disrupting disturbances seem an obvious explanation for such shifts, evidence for large disturbances is not always apparent. Here we show that complex communities tend to move through occasional catastrophi ...
... to proceed gradually at first sight, but remarkably rapid shifts are known to occur. Although disrupting disturbances seem an obvious explanation for such shifts, evidence for large disturbances is not always apparent. Here we show that complex communities tend to move through occasional catastrophi ...