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Oriental weatherfish - Pennsylvania Sea Grant
Oriental weatherfish - Pennsylvania Sea Grant

... The oriental weatherfish, also called the dojo and Chinese loach, is a small eel-like fish that gets its name from its ability to forecast the weather. It is sensitive to changes in barometric pressure, so increases in activity and swimming in fast circles can indicate that major weather changes are ...
BiologicalDiversityNotes [Compatibility Mode]
BiologicalDiversityNotes [Compatibility Mode]

... Nature (IUCN) calculates that one-fifth of mammals and nearly one-third of amphibians are threatened with extinction. Some estimate that only half of the species alive today will survive to 2100. Others describe the pace of biodiversity loss as 100 times the rate of natural extinctions. Less-diverse ...
Species and Populations
Species and Populations

... species living in the same area at the same time.  Able to interbreed  Snails in two different ponds may breed with only snails in each respective pond.  Populations can be separated by geography and eventually stop interbreeding  Form a new species this way. ...
A Local Ecosystem – Topic Test SECTION 1: Multiple Choice
A Local Ecosystem – Topic Test SECTION 1: Multiple Choice

... From this diagram, we can conclude that A, B and C, respectively are: A) A producer, a herbivore and a decomposer B) An omnivore, a producer and a herbivore C) A decomposer, a carnivore and a producer D) A herbivore, a decomposer and an omnivore 2. Organism E in question 1 is: A) A producer B) A her ...
File
File

... Migrate to another area Shift its feeding habits or behavior through evolution and natural selection Suffer a sharp decline in population ...
2013年1月12日托福写作真题回忆
2013年1月12日托福写作真题回忆

... the temperature limits and ranges for different species. The world's great vegetation zones are closely aligned with temperature belts. Different plant species adjust to seasonal changes in different ways. Some make the adjustment by retarding growth and arresting vital functions during winter. This ...
Chapter 5 - Kennedy APES
Chapter 5 - Kennedy APES

... 2. Predators have a variety of ways to capture prey. Herbivores feed on immobile plant species; carnivores use pursuit of prey or ambush to capture prey. Some predators use camouflage and others use chemical warfare (venom) to capture prey or deter predators. 3. Prey species escape predators in a nu ...
Name
Name

Presentation: Biological Diversity - Harvard Life Science Outreach
Presentation: Biological Diversity - Harvard Life Science Outreach

... Nature (IUCN) calculates that one-fifth of mammals and nearly one-third of amphibians are threatened with extinction. Some estimate that only half of the species alive today will survive to 2100. Others describe the pace of biodiversity loss as 100 times the rate of natural extinctions. Less-diverse ...
Unit 5 Pre and Post Test
Unit 5 Pre and Post Test

... Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true. ____ 23. All of the members of a community belong to the same species. _________________________ ____ 24. The carrying capacity is the smallest number of individuals in a popul ...
An Organism`s Niche
An Organism`s Niche

... • These interactions depend on whether they harm or help one another ...
Decurrent False Aster Best Management Practices
Decurrent False Aster Best Management Practices

... that grows in wetlands and on the borders of marshes, lakes, oxbows, and sloughs. It also may be found in old fields, roadsides, agricultural fields, and on levees. It favors sites characterized by moist soil and regular disturbance, preferably periodic flooding, which maintains open areas with high ...
1 38.1. Hierarchy of Ecology A. Definitions and Levels of Study 1
1 38.1. Hierarchy of Ecology A. Definitions and Levels of Study 1

... c. Competition occurs when food or space becomes limited. d. Mutualism occurs when both members of a pair of species benefit from their interaction. 8. Larger units or ecosystems allow study of the community and the physical environment. B. Environment and the Niche (Figure 38.1) 1. An animal’s envi ...
Freshwater biodiversity a hidden resource under threat factsheet EN
Freshwater biodiversity a hidden resource under threat factsheet EN

... Do freshwater species matter? Freshwater ecosystems provide many important goods and services including the provision of food, clean water, building materials, and flood and erosion control. The livelihoods of many of the world’s poorest communities are dependent on resources from freshwater ecosyte ...
Populations
Populations

...  Sometimes, competition results in fights between rivals.  Many competitive interactions do not involve direct contests. But when one individual takes a resource, the resource is no longer available for another individual. ...
Ch 8 Community Ecology
Ch 8 Community Ecology

... C. Legislation of catch limits to avoid depletion of fish stocks in a shared lake D. Inadvertent destruction of beneficial species while attempting to control pests E. Depletion of an aquifer by regional farmers ...
Topic 1
Topic 1

... • Some sparrows were fat and had large energy reserves, while others were skinny. • The fat sparrows were able to survive while the skinny sparrows perished in the cold. ...
species - Mercer Island School District
species - Mercer Island School District

... The graph below shows the seed size consumed by two different species. Predict how this type of interspecific competition might shape the natural selection of each species. How might the distribution of each species for this resource use be affected? Draw new graph for results. Hint: what subset of ...
Allen, S - Linnean Society of NSW
Allen, S - Linnean Society of NSW

... stormbergensis and a new species L. dissitipinnula apparently without links to the three complexes. The Lepidopteris fertile organs, Peltaspermum and Antevsia are present. Kurtziana is separated ...
doc - LPS
doc - LPS

... 9. Explain, using an example, how destroying the balance between predator and prey in community can upset the ecology of an area. 10. Carefully define the concept of ecological niche, and explain its significance with respect to the competition exclusion principle. Specify the three possible results ...
Chapter 22 Descent With Modification 1. Compare the idea of the
Chapter 22 Descent With Modification 1. Compare the idea of the

... 2. Examine competitive exclusion in a study on two species of Paramecium and provide a hypothesis for why one species might have a selective advantage over the other 3. Discuss the partitioning of Anolis lizards in the Caribbean to illustrate niche development 4. Distinguish between habitat and nich ...
Name - MabryOnline.org
Name - MabryOnline.org

... ____ 15. Population density is defined as a. an approximation of a number, based on reasonable assumptions. b. the number of individuals of a population in a specific area. c. the number of individuals moving into a population. d. the smallest level of ecological organization. ____ 16. Counting the ...
introduction to ecology
introduction to ecology

... a. Biotic Factors--- All living factors that affect an organism. b. Abiotic Factors---All non-living factors that affect an organism (sunlight, water, temperature, wind, rocks, soil…) 2. The Changing Environment---Abiotic factors are not constant. b. Temperature varies from place to place. c. Rainfa ...
the mediterranean: a biodiversity hotspot under threat
the mediterranean: a biodiversity hotspot under threat

... How many Mediterranean species are threatened? 1,912 species of amphibians, birds, cartilaginous fishes, endemic freshwater fishes, crabs and crayfish, mammals, dragonflies and reptiles have been assessed to date in the Mediterranean region. About 19% of these species are threatened with extinction: ...
Chapter 27 Community Interactions
Chapter 27 Community Interactions

... decimate existing ecosystems but leave behind nutrient-rich environments ...
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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.
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