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Our duties to endangered species
Our duties to endangered species

... rather is as certain as anything else we believe about the empirical world, even though at times scientists revise the theories and taxa with which they map these forms. Species are not so much like lines of latitude and longitude as like mountains and rivers, phenomena objectively there to be mappe ...
Darwin`s Idea of Common Descent
Darwin`s Idea of Common Descent

... Darwin’s Idea of Gradualism • changes through the gradual change of population rather than the sudden production of new individuals • species arise: • Through gradual accumulation of adaptations to a different environment ...
Biodiversity Section 3
Biodiversity Section 3

... resources and supports wildlife protection. – The Nature Conservancy has helped purchase millions of hectares of habitat preserves in 29 countries. – Conservation International helps identify biodiversity hotspots. – Greenpeace International organizes direct and ...
ALIEN INVASION - Arrowhead High School
ALIEN INVASION - Arrowhead High School

... indigenous = native to a particular place biogeographical = the branch of biology that studies the geographical distribution of organisms ...
Chapter 3: Ecosystems - micsapes
Chapter 3: Ecosystems - micsapes

... species hat live in the same place a the same time  Variation – genetic diversity  Habitat – where they live ...
community
community

... interaction in which an herbivore eats parts of a plant or alga. • It has led to evolution of plant mechanical and chemical defenses and adaptations by herbivores. ...
Population and communities
Population and communities

... the base of food chain  greater length of the chain  more species ...
Protecting Nationally Threatened Species
Protecting Nationally Threatened Species

... How are threatened species and communities protected? The Minister must ensure that a recovery plan is prepared and implemented for each listed threatened species or ecological community. Recovery plans must set out research and management actions required for the recovery of the species, identify c ...
Evolutionary history in a tiny package
Evolutionary history in a tiny package

... We already pointed out two of the difficulties with the biological species concept: what do you do with asexual organisms, and what do you do with organisms that occasionally form hybrids with one another? Other difficulties include:  What is meant by "potentially interbreeding?" If a population of ...
botkin7e_lecture_ppt_ch08
botkin7e_lecture_ppt_ch08

... In 1749 Linneaus sent a colleague to North America to collect plants  Desired for use in decorative gardens ...
Name: Period: _____ Date
Name: Period: _____ Date

... 47. The first species to develop in an area is called the _____________________________. What traits/characteristics make them good at this? ...
16. Changes to Ecosystems
16. Changes to Ecosystems

Exam 7
Exam 7

... • 31. In the tropics, two species of mites (small arthropods, relatives of spiders) live in flowers that hummingbirds visit. The hummingbirds feed on flower nectar and spread pollen from flower to flower. The mites feed on the nectar. They travel from flower to flower by riding on the beak of the h ...
Policy Regarding Mitigation of Impacts to
Policy Regarding Mitigation of Impacts to

... analysis and protection in timber harvest plans (THPs) of plants that are rare but are not listed under the State or Federal Endangered Species Acts. This clarification will be very welcome. These requirements have been applied inconsistently in the past and there is considerable confusion among the ...
Disturbance - Iowa State University
Disturbance - Iowa State University

... 3) Timing: coincidence of the disturbance with important cycles or events in the ecosystem affected by disturbance; e.g., prairie fire in spring has different effects on species composition and nutrient cycling than a fire in the fall 4) Disturbance area: absolute and relative size of disturbance ar ...
File
File

... The Galápagos Islands, 596 miles (960 kilometers) west of the mainland of Ecuador are part of Ecuador and are home to unique reptiles, birds, and plants. The Costa, or coastal plain region is where many of the world’s bananas are grown. The Sierra is also made up of farmland. The Oriente is east of ...
Ecological Succession
Ecological Succession

... • What makes succession happen? – Tolerance •only species which can tolerate full range of conditions survive •early succession- r-selected species dominate because they have broader “tolerance ranges” ...
Unit 3 Sustainability and Interdependence
Unit 3 Sustainability and Interdependence

... where the roles of donor and recipient later reverse, often occurs in social animals. Behaviour that appears to be altruistic can be common between a donor and a recipient if they are related (kin). The donor will benefit in terms of the increased chances of survival of shared genes in the recipient ...
Speciation - WordPress.com
Speciation - WordPress.com

... This refers to the development of new species from a common ancestor. Remember that organisms of the same species: • have similar DNA and occupy the same ecological niche. • can breed amongst themselves to produce fertile offspring. Speciation occurs when gene flow stops between two populations wher ...
Electronic Supplementary Material for Speciation with gene flow in a
Electronic Supplementary Material for Speciation with gene flow in a

... action each during a time step based on their perception of the environment. The FCM, called a map in our system, is used to model the agent behaviors (structure of the graph) and to compute the next action of the agent (dynamics of the map). Formally, a FCM is a graph which contains a set of nodes ...
Unit 3: Pre
Unit 3: Pre

... 35. In Tucson, water that travels the sewage system is treated and cleaned. This reclaimed water is then sent where? A. Back to people’s homes B. The ocean C. Irrigation Systems D. B and C 36. Water is a renewable resource. A. True ...
Group 6 Day Group 6 1 2 2 5 3 12 4 28 5 60 6 140 Group 6 http
Group 6 Day Group 6 1 2 2 5 3 12 4 28 5 60 6 140 Group 6 http

... They occur in all oceans from the poles to the tropics; polar and subpolar regions contain relatively few species compared with temperate areas. Although tropical regions exhibit the greatest number of species, more abundant populations are found in polar to temperate regions. Usually microscopic, s ...
Community Ecology Community - a group of species that live and
Community Ecology Community - a group of species that live and

... The full range of resources and habitat space that a species might potentially use is its “fundamental niche.” Species can only exist for long periods of time within their niche. A niche is more than just a place or habitat. It is a description of how and where the species exists. ...
Ch 2 powerpoint - Plain Local Schools
Ch 2 powerpoint - Plain Local Schools

... It is the relationship in which one species benefits and the other is neither harmed or helped Example: sharks and remoras ...
AZA Policy on Non-native Invasive Species
AZA Policy on Non-native Invasive Species

... AZA members are encouraged to make every effort to ensure that their animal and plant collections and management practices do not become the source of nonnative invasive species introductions. All AZA member institutions should assess the potential risks, both direct and indirect, associated with th ...
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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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