The Origin of Diversity
... fitness is very low. For a stable equilibrium to exist with multiple coexisting genotypes, what is needed is a restorative force that reduces the ratio of mortality to birth rates when a population’s size fluctuates downward, and vice-versa. More precisely, what we seek is that the effect of each sp ...
... fitness is very low. For a stable equilibrium to exist with multiple coexisting genotypes, what is needed is a restorative force that reduces the ratio of mortality to birth rates when a population’s size fluctuates downward, and vice-versa. More precisely, what we seek is that the effect of each sp ...
Reintroduction of a Rare Plant (Gladiolus imbricatus) Population to a
... meadow community was successful—the seedlings established and survived over the three seasons in all management treatments. There were, however, clear differences in the success of the reestablishment of target species between management regimes. Seedling establishment was most successful in the mul ...
... meadow community was successful—the seedlings established and survived over the three seasons in all management treatments. There were, however, clear differences in the success of the reestablishment of target species between management regimes. Seedling establishment was most successful in the mul ...
Community Ecology - Home
... • Gause did early predator-prey experiments, and concluded that cycles in nature result from constant migration, because he couldn’t get coexistence in his experiments. • Huffaker found habitat complexity allowed coexistence • Holling studied Functional response – relationship between prey density a ...
... • Gause did early predator-prey experiments, and concluded that cycles in nature result from constant migration, because he couldn’t get coexistence in his experiments. • Huffaker found habitat complexity allowed coexistence • Holling studied Functional response – relationship between prey density a ...
Succession in Natural Communities
... Slatyer also bring up the question of climax communities. They state that since their inhibition succession model is based on life-history and resistance to dying, that a climax community is simply the species most resistant to damage and elimination. They also concluded that, since they never found ...
... Slatyer also bring up the question of climax communities. They state that since their inhibition succession model is based on life-history and resistance to dying, that a climax community is simply the species most resistant to damage and elimination. They also concluded that, since they never found ...
Biome Final Project
... open ocean, estuaries, coral reefs, still waters (lakes, ponds, marshes and bogs) and running waters (rivers and streams). You may choose which biome you want to do. You will be graded on the finished product and the effort displayed in the classroom and library. The information that must be include ...
... open ocean, estuaries, coral reefs, still waters (lakes, ponds, marshes and bogs) and running waters (rivers and streams). You may choose which biome you want to do. You will be graded on the finished product and the effort displayed in the classroom and library. The information that must be include ...
Chapter 21
... • As populations increase in numbers, various environmental factors such as food availability and access to habitat limit an organism’s ability to reproduce. ...
... • As populations increase in numbers, various environmental factors such as food availability and access to habitat limit an organism’s ability to reproduce. ...
Ecology notes
... biological communities, remove organisms from them, and alter the availability of resources. The types of disturbances and their frequency and severity vary from community to community. Small-scale disturbance often have positive effects. For example, when a large tree falls in a windstorm, it distu ...
... biological communities, remove organisms from them, and alter the availability of resources. The types of disturbances and their frequency and severity vary from community to community. Small-scale disturbance often have positive effects. For example, when a large tree falls in a windstorm, it distu ...
UDC 574:502 Biological diversity: a modern state close and distant
... outlook of most of humanity. At least three concepts can be distinguished. The first one is a Redi principle formulated Italian scientist Francesco Redi in XVII century - Omne vivum e vivo - Every living from the living. In the nineteenth century, this idea was proven by Louis Pasteur. Another revol ...
... outlook of most of humanity. At least three concepts can be distinguished. The first one is a Redi principle formulated Italian scientist Francesco Redi in XVII century - Omne vivum e vivo - Every living from the living. In the nineteenth century, this idea was proven by Louis Pasteur. Another revol ...
Maine`s Marine Invasion - Salem Sound Coastwatch
... There are native species; those that have been in Maine waters historically… And there are non-native species…those that are “from away”, those that weren’t in this region historically. Many similar and basically synonymous terms used to describe non-native species. (e.g. Exotic, alien, nonindigenou ...
... There are native species; those that have been in Maine waters historically… And there are non-native species…those that are “from away”, those that weren’t in this region historically. Many similar and basically synonymous terms used to describe non-native species. (e.g. Exotic, alien, nonindigenou ...
Online Supplementary Material to: How to predict community responses to
... derivative is a simple number. Finding suitable functions Gi , Li , Mi , Si is therefore reduced to finding functions for which the partial derivatives at the steady state, e.g. ∂Gi /∂Xi |∗ , result in such values that the Jacobian matrix has only negative eigenvalues. Thus we can reinterpret the pa ...
... derivative is a simple number. Finding suitable functions Gi , Li , Mi , Si is therefore reduced to finding functions for which the partial derivatives at the steady state, e.g. ∂Gi /∂Xi |∗ , result in such values that the Jacobian matrix has only negative eigenvalues. Thus we can reinterpret the pa ...
Article - American Arachnology
... often shallow (10-15 cm) . Paruroctonus constructs burrows in the flatland habitat tha t are frequently deeper than 20 cm . Habitat segregation among scorpions into rock inhabiting forms and soil inhabiting forms has been reported before (Hadley and Williams 1968) , Williams 1970, Koch 1978) . There ...
... often shallow (10-15 cm) . Paruroctonus constructs burrows in the flatland habitat tha t are frequently deeper than 20 cm . Habitat segregation among scorpions into rock inhabiting forms and soil inhabiting forms has been reported before (Hadley and Williams 1968) , Williams 1970, Koch 1978) . There ...
Word format - Parliament of Australia
... In July 2000 Environment Australia issued a set of ‘Administrative Guidelines 13’ to assist proponents of an action to determine whether an action should be referred to the Environment Minister for a decision on whether approval is required. It does this by providing a list of criteria to assist pro ...
... In July 2000 Environment Australia issued a set of ‘Administrative Guidelines 13’ to assist proponents of an action to determine whether an action should be referred to the Environment Minister for a decision on whether approval is required. It does this by providing a list of criteria to assist pro ...
Evolution and Ecology Lecture Outline
... 38. Two animals with many classification levels in common are considered to be ___________ _____________________. ...
... 38. Two animals with many classification levels in common are considered to be ___________ _____________________. ...
Review Article The Fluctuation Niche in Plants - CREAF
... [17]. So, we can conclude that different scales and variables, and a more specific conceptual approach, are needed to gain understanding of Wilson’s “heterogeneity partition.” In this paper we focus on one component of this “heterogeneity partition,” that is, related to the fluctuations of resources ...
... [17]. So, we can conclude that different scales and variables, and a more specific conceptual approach, are needed to gain understanding of Wilson’s “heterogeneity partition.” In this paper we focus on one component of this “heterogeneity partition,” that is, related to the fluctuations of resources ...
Ecology Review
... C) Grasses of the grassland biome have deep roots that form dense mats to collect water when it is available. D) Plants in the desert biome produce chemicals that protect them from being eaten by animals. ...
... C) Grasses of the grassland biome have deep roots that form dense mats to collect water when it is available. D) Plants in the desert biome produce chemicals that protect them from being eaten by animals. ...
Chapter 35
... animals, and microorganisms that occur over wide geographic areas and have distinctive physical characteristics are called biomes. • 6. Biosphere- all the world’s biomes, along with its marine and freshwater assemblages, together constitute an interactive system called the ...
... animals, and microorganisms that occur over wide geographic areas and have distinctive physical characteristics are called biomes. • 6. Biosphere- all the world’s biomes, along with its marine and freshwater assemblages, together constitute an interactive system called the ...
How will habitat change affect intertidal animals in estuaries?
... In general, the two models showed similar responses to mud content for individual species. For example, both models indicated that the polychaete Aonides preferred sand, and was unlikely to occur, or be at maximum density, in mud. Interestingly, for a few species the two models gave quite different ...
... In general, the two models showed similar responses to mud content for individual species. For example, both models indicated that the polychaete Aonides preferred sand, and was unlikely to occur, or be at maximum density, in mud. Interestingly, for a few species the two models gave quite different ...
Adapting to the Environment
... successful also live to reproduce. Over many generations individuals with those characteristics continue to reproduce. Individuals that are poorly suited to the environment are less likely to survive and reproduce. Over time, these poorly suited characteristics may disappear from the population. Thi ...
... successful also live to reproduce. Over many generations individuals with those characteristics continue to reproduce. Individuals that are poorly suited to the environment are less likely to survive and reproduce. Over time, these poorly suited characteristics may disappear from the population. Thi ...
Mutualism
... tightly integrated work of uniformly high quality. This integration is reflected in the hierarchical structure of the book; there are not only sections and chapters but dozens of short boxes within the chapters explaining, each in a few pages, either a fascinating biological interaction or a powerfu ...
... tightly integrated work of uniformly high quality. This integration is reflected in the hierarchical structure of the book; there are not only sections and chapters but dozens of short boxes within the chapters explaining, each in a few pages, either a fascinating biological interaction or a powerfu ...
Descargar artículo en formato PDF
... For large, carinate and trochoid shells from the springs of Cuatrociénegas valley established Taylor (1966) the subfamily Nymphophilinae. He included in this subfamily only one species: Nymphophilus minckleyi. For Taylor these shells were “… remarkably large for the family…most un-hydrobiid in gener ...
... For large, carinate and trochoid shells from the springs of Cuatrociénegas valley established Taylor (1966) the subfamily Nymphophilinae. He included in this subfamily only one species: Nymphophilus minckleyi. For Taylor these shells were “… remarkably large for the family…most un-hydrobiid in gener ...
docx, 366.0 kb - ConservationTools.org
... species could provide an ecosystem service in one year, under one set of conditions, most of the 147 plant species were important at least once for the maintenance of that service because different sets of species provided services at different years under different environmental conditions and at d ...
... species could provide an ecosystem service in one year, under one set of conditions, most of the 147 plant species were important at least once for the maintenance of that service because different sets of species provided services at different years under different environmental conditions and at d ...
References Carposinidae Carrion Beetles (Coleoptera: Silphidae)
... or more sclerotized plates, without patches or rows of asperities, each tergum with 1 (Silphinae) or 2 (Ptomascopus) lateral tergal processes extending beyond edges of sterna or without such processes (Nicrophorus) but with four spinose projections along posterior margin of abdominal terga. One or t ...
... or more sclerotized plates, without patches or rows of asperities, each tergum with 1 (Silphinae) or 2 (Ptomascopus) lateral tergal processes extending beyond edges of sterna or without such processes (Nicrophorus) but with four spinose projections along posterior margin of abdominal terga. One or t ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.