Invasions: the trail behind, the path ahead, and a test
... species introduced to Australia had undergone significant morphological change within c. 100 years. The magnitude of these changes was substantial, with several species doubling or halving crucial traits like plant height and leaf area. We have reached the point where additional case studies demonstr ...
... species introduced to Australia had undergone significant morphological change within c. 100 years. The magnitude of these changes was substantial, with several species doubling or halving crucial traits like plant height and leaf area. We have reached the point where additional case studies demonstr ...
introduction to biology - San Diego Mesa College
... A scientist performs a controlled experiment. This means that: A) the experiment is repeated many times to ensure that the results are accurate B) the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data C) two exper ...
... A scientist performs a controlled experiment. This means that: A) the experiment is repeated many times to ensure that the results are accurate B) the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data C) two exper ...
Density-dependent dispersal may explain the mid
... where N is the population number, r is intrinsic growth rate, and k is per capita emigration rate (see Table 1 for a summary of all the parameters and variables). The initial number of individuals was fixed at ten for all the models. The behavioural response model When emigration is proportional to ...
... where N is the population number, r is intrinsic growth rate, and k is per capita emigration rate (see Table 1 for a summary of all the parameters and variables). The initial number of individuals was fixed at ten for all the models. The behavioural response model When emigration is proportional to ...
Estimating cost functions for the four large carnivores in Sweden
... Eq. (2) is the corresponding growth rate for the predator species, P. r(N) is the per capita birth rate of the prey species, which decreases with N in most models. Furthermore, g(N, P) is the predator per capita consumption rate of prey, while the function f(·) represents the predators' numerical re ...
... Eq. (2) is the corresponding growth rate for the predator species, P. r(N) is the per capita birth rate of the prey species, which decreases with N in most models. Furthermore, g(N, P) is the predator per capita consumption rate of prey, while the function f(·) represents the predators' numerical re ...
presence and prevalence of bd - The Center for North American
... to the mean of the triplicate Ct values of the sampled individuals. The subsequent ZE value was then considered representative of the individual’s disease status. Of the 143 individuals sampled, 19 individuals registered detectable zoospore DNA during qPCR analysis (Table 1). An individual was consi ...
... to the mean of the triplicate Ct values of the sampled individuals. The subsequent ZE value was then considered representative of the individual’s disease status. Of the 143 individuals sampled, 19 individuals registered detectable zoospore DNA during qPCR analysis (Table 1). An individual was consi ...
Sex determination in plants Cristina Juarez and Jo Ann Banks
... Early studies demonstrated that the application of gibberellin (GA), or changes of growth conditions that result in an increase of GA levels, tend to feminize the tassel [22–24]. Mutants deficient in GA biosynthesis or perception, such as the dwarf (d) and anther-ear (an) mutants, have perfect upper ...
... Early studies demonstrated that the application of gibberellin (GA), or changes of growth conditions that result in an increase of GA levels, tend to feminize the tassel [22–24]. Mutants deficient in GA biosynthesis or perception, such as the dwarf (d) and anther-ear (an) mutants, have perfect upper ...
A mechanistic verification of the competitive exclusion principle
... marked13,17,18. So, a mechanistic mechanism of soliton-like interpenetration of colliding population waves was not directly demonstrated. Modelling by differential equations19 has not helped to realize what really happens because it does not show what happens with population waves on a micro-level ...
... marked13,17,18. So, a mechanistic mechanism of soliton-like interpenetration of colliding population waves was not directly demonstrated. Modelling by differential equations19 has not helped to realize what really happens because it does not show what happens with population waves on a micro-level ...
Variable elements of metacommunity structure across an aquatic
... than within the more tightly competing groups in their respective habitats. Species with similar traits should theoretically lead to even stronger competition signal. Thus, rather than focusing on common ancestry alone (i.e. taxonomic groups), examining these patterns for species with similar functi ...
... than within the more tightly competing groups in their respective habitats. Species with similar traits should theoretically lead to even stronger competition signal. Thus, rather than focusing on common ancestry alone (i.e. taxonomic groups), examining these patterns for species with similar functi ...
Dynamics of Blowfly Populations
... some interesting points, which show different patterns of dynamic behaviour. However, this dimension is not completely suitable to project trends in terms of local extinction, except in cases involving deterministic chaos. Two approaches have been exploited to assess the uncertainty, by using the mo ...
... some interesting points, which show different patterns of dynamic behaviour. However, this dimension is not completely suitable to project trends in terms of local extinction, except in cases involving deterministic chaos. Two approaches have been exploited to assess the uncertainty, by using the mo ...
Item 38C Bobcat Trapping Ban Implications - CAL
... heavily during the period when fishers have dependent young. Three females had seven kits. One study found female carcass on ...
... heavily during the period when fishers have dependent young. Three females had seven kits. One study found female carcass on ...
Population growth rate
... We do not know how long we can continue increasing the earth’s carrying capacity for humans without seriously degrading the life-support system for humans and many other species. For most of history, human population grew slowly. But in the last 200 years, human population has experienced rapid expo ...
... We do not know how long we can continue increasing the earth’s carrying capacity for humans without seriously degrading the life-support system for humans and many other species. For most of history, human population grew slowly. But in the last 200 years, human population has experienced rapid expo ...
vamosi and schluter 2004
... We first analyzed ‘‘total armor’’ and subsequently individual armor elements. Total armor was calculated as the first principal component extracted from the covariance matrix of size-adjusted armor traits and ln-transformed number of lateral plates. The first principal component accounted for 79% of ...
... We first analyzed ‘‘total armor’’ and subsequently individual armor elements. Total armor was calculated as the first principal component extracted from the covariance matrix of size-adjusted armor traits and ln-transformed number of lateral plates. The first principal component accounted for 79% of ...
BIODIVERSITY AND HAZARDS MANAGEMENT
... Earth. Biodiversity is often a measure of the health of biological systems to indicate the degree to which the aggregate of historical species are viable versus extinct. Biodiversity is a neologism and a portmanteau word, from biology and diversity.The Science Division of The Nature Conservancy used ...
... Earth. Biodiversity is often a measure of the health of biological systems to indicate the degree to which the aggregate of historical species are viable versus extinct. Biodiversity is a neologism and a portmanteau word, from biology and diversity.The Science Division of The Nature Conservancy used ...
Absence of phylogenetic signal in the niche structure of meadow
... assembled from species that have disparate evolutionary histories, as reflected in the taxonomy of their members which generally belong to a wide range of plant families. Temperate forests have well-documented post-glacial histories which show that species migrated at different rates and often from ...
... assembled from species that have disparate evolutionary histories, as reflected in the taxonomy of their members which generally belong to a wide range of plant families. Temperate forests have well-documented post-glacial histories which show that species migrated at different rates and often from ...
Ecological Importance of Large Herbivores in the
... within the clay soil KLEE plots and found that cattle suppressed grass-dwelling arthropods (captured in sweep nets) whereas megaherbivores (elephants and giraffes only) suppressed ground-dwelling arthropods (captured in pitfall traps). Goheen et al. (2004) used both pitfall traps and sweep nets and ...
... within the clay soil KLEE plots and found that cattle suppressed grass-dwelling arthropods (captured in sweep nets) whereas megaherbivores (elephants and giraffes only) suppressed ground-dwelling arthropods (captured in pitfall traps). Goheen et al. (2004) used both pitfall traps and sweep nets and ...
Full-Text PDF
... Population dynamics provides an interesting field for the application of a plethora of ideas from statistical mechanics. Here I present applications of statistical mechanics concepts and techniques to three main problems in ecology in which I have been working in collaboration with different groups ...
... Population dynamics provides an interesting field for the application of a plethora of ideas from statistical mechanics. Here I present applications of statistical mechanics concepts and techniques to three main problems in ecology in which I have been working in collaboration with different groups ...
Koa`e kea or White-tailed Tropicbird
... SPECIES INFORMATION: The koa‘e kea or white-tailed tropicbird is a showy, white seabird (Family: Phaethontidae), related to boobies and frigatebirds. Six koa‘e kea (white-tailed tropicbird) subspecies are recognized; only one (P. l. dorothea) breeds in Hawai‘i. Adult male and females are mostly whit ...
... SPECIES INFORMATION: The koa‘e kea or white-tailed tropicbird is a showy, white seabird (Family: Phaethontidae), related to boobies and frigatebirds. Six koa‘e kea (white-tailed tropicbird) subspecies are recognized; only one (P. l. dorothea) breeds in Hawai‘i. Adult male and females are mostly whit ...
Chapter 47 Kelp Forests and Seagrass Meadows
... exploited species, have high productivity (see Chapter 6 for values) and thus, play a significant role in ecological balance. Apart from goods (e.g. associated fisheries, food, phycocolloids) produced by these two ecosystems, kelps and seagrasses also provide many ecosystem services such as carbon s ...
... exploited species, have high productivity (see Chapter 6 for values) and thus, play a significant role in ecological balance. Apart from goods (e.g. associated fisheries, food, phycocolloids) produced by these two ecosystems, kelps and seagrasses also provide many ecosystem services such as carbon s ...
IOSR Journal of Mathematics (IOSR-JM)
... resources, the species can limit each other’s numbers. An apparent mutualism between prey species that share a common predator can arise if predator populations are limited by factors other than prey availability, Abrams [3]. In this case, the presence of a prey species satisfies the predator, thus ...
... resources, the species can limit each other’s numbers. An apparent mutualism between prey species that share a common predator can arise if predator populations are limited by factors other than prey availability, Abrams [3]. In this case, the presence of a prey species satisfies the predator, thus ...
Plant hormones
... A one molar solution (1 M) is the molecular weight of the compound in grams dissolved in a solvent to measure one liter. Researchers commonly use molarity to express hormone concentrations. ...
... A one molar solution (1 M) is the molecular weight of the compound in grams dissolved in a solvent to measure one liter. Researchers commonly use molarity to express hormone concentrations. ...
Plant and Soil 287:
... Several acid phosphatase genes from Gramnegative bacteria have been isolated and characterized (Rossolini et al., 1998). These cloned genes represent an important source of material for the genetic transfer of this trait to PGPB strains. Some of them code for acid phosphatase enzymes that are capabl ...
... Several acid phosphatase genes from Gramnegative bacteria have been isolated and characterized (Rossolini et al., 1998). These cloned genes represent an important source of material for the genetic transfer of this trait to PGPB strains. Some of them code for acid phosphatase enzymes that are capabl ...
Multiple Molecular Mechanisms Cause Reproductive Isolation
... but the COB mRNA was not affected (Figure 4A). We further analyzed the translation products from purified mitochondria and confirmed that only the Cox1 protein was missing (Figure 4B). By contrast, Sc-MRS1 transcription and protein transport into mitochondria appear to be normal in both S. paradoxus ...
... but the COB mRNA was not affected (Figure 4A). We further analyzed the translation products from purified mitochondria and confirmed that only the Cox1 protein was missing (Figure 4B). By contrast, Sc-MRS1 transcription and protein transport into mitochondria appear to be normal in both S. paradoxus ...
Alicia_Ref-Titles - Western Oregon University
... accuracy of 55%, while the overall accuracy for T. chinensis was 85%. Models for the generalist species had varying performances, poor evaluations, and inconsistent results. This may be a result of a generalist's capability to persist in a wide range of environmental conditions that are not easily d ...
... accuracy of 55%, while the overall accuracy for T. chinensis was 85%. Models for the generalist species had varying performances, poor evaluations, and inconsistent results. This may be a result of a generalist's capability to persist in a wide range of environmental conditions that are not easily d ...
Appendix_GCB-formatted
... (Schoener, 2009). Instead of describing population growth variation in response to environmental variation, this resource-utilization niche describes the frequency distribution of resource use along each niche axis and directly quantifies the intensity of competition from the overlap of resource uti ...
... (Schoener, 2009). Instead of describing population growth variation in response to environmental variation, this resource-utilization niche describes the frequency distribution of resource use along each niche axis and directly quantifies the intensity of competition from the overlap of resource uti ...
Review for the Ecology Unit Test!
... One example is the lichens, little non-descript patches of stuff you see growing on rocks and tree bark. This is a symbiosis, consisting of a fungus and an alga. The fungus provides a protective home for the algae, and gathers mineral nutrients from rainwater and from dissolving the rock underneath. ...
... One example is the lichens, little non-descript patches of stuff you see growing on rocks and tree bark. This is a symbiosis, consisting of a fungus and an alga. The fungus provides a protective home for the algae, and gathers mineral nutrients from rainwater and from dissolving the rock underneath. ...