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Ecology
Ecology

... Continental drift explains the distributions of some species. Wallace (1860) observed that animals can vary considerably over very short distances, a phenomenon that could not be explained until continental drift was proposed. ...
4.1.1-4.2.4 Biodiversity
4.1.1-4.2.4 Biodiversity

... because we don't even know within an order of magnitude how many species there are.  Fossil records can reveal the average "lifetimes" of species, or how long different classes of plants and animals generally exist on the earth before going extinct. ...
The 3 levels of biodiversity are genetic diversity, species diversity
The 3 levels of biodiversity are genetic diversity, species diversity

...  The ecological role of the organisms must be addressed as well. ...
Species Diversity
Species Diversity

...  Environmental complexity may account for significant portion of the diversity. ...
ECOinfoBIO
ECOinfoBIO

...  Endosymbiogenesis is the theory that this has happened several times in the evolution of the eukaryotic cell  The mitochondria that power our cells are thought to have once been bacterial endosymbionts ...
community structure and ecological succession
community structure and ecological succession

... ! In a given region, how many species occur together? ! How many inter-relationships can be supported? How do these affect the number of species? ! How do changes in species composition occur? How quickly? ...
Chapter 7 - School District of La Crosse
Chapter 7 - School District of La Crosse

... Hold water during dry spells, serve as refuges for aquatic life. ...
Species concept
Species concept

... • Detection of invasive species is very important and an important sign is the detection of hybrids between invasive and native species • Use of molecular markers are especially important for species that lack many morphological differences ...
Chapter 6
Chapter 6

... • Species that have especially great impacts on other community members and on the community’s identity • If keystone species are removed, communities ...
Scientist
Scientist

... bee colonies would show regular distributions while non-aggressive species would show random or clumped distributions. – As predicted, four species with regular distributions were highly aggressive. • Fifth was non-aggressive and randomly distributed. • Prospective nest sites marked with pheromones. ...
High latitude corals on the move: a comparative heat wave
High latitude corals on the move: a comparative heat wave

... to investigate this tropicalisation hypothesis and compare pre- and post-heatwave coral communities thanks to transect data from 2006 and 2013. Post heatwave data was gathered by repeating the experimental methods and design of a 2006 survey (Western Australian Museum). We found that contemporary bi ...
Document
Document

... requirements cannot live together in the same place and use the same resources, that is, occupy the same niche … Competitive exclusion principle – complete competitors cannot coexist ...
Review Questions Topic 4
Review Questions Topic 4

... Size – bigger is usually better because it minimizes edge effects. Smaller sometimes better due to more diversity in habitat Shape – circular usually better to minimize edge effects ( ectozones) . Actually based on what is available so most parks are irregular in shape. Edge effects- where 2 habitat ...
Notes Chapter 2
Notes Chapter 2

... – Competition is limited because each species tends to be specialized and adapted to its own habitat or niche ...
Review Questions Topic 4
Review Questions Topic 4

... Size – bigger is usually better because it minimizes edge effects. Smaller sometimes better due to more diversity in habitat Shape – circular usually better to minimize edge effects ( ectozones) . Actually based on what is available so most parks are irregular in shape. Edge effects- where 2 habita ...
Biol
Biol

... 1. Discuss the six major biomes. What are the characteristics of each, what are examples of 3 species of plants and 3 species of animals found at each one, what are 2 special adaptations found at each area? 2. What would you say to someone who feels all the coyotes that live near their home should b ...
Document
Document

... Summarize the locations where a species has been successful Do not tell us about locations where they could be successful Do not tell us about places where a species has failed Understanding distributions relies on knowing what factors prevent species from occupying a particular location or region ...
communities
communities

... EACH OTHER? ...
BIOL 221 - philipdarrenjones.com
BIOL 221 - philipdarrenjones.com

... C) The first explanation is biological, whereas the second is philosophical. D) The first explanation is testable as a scientific hypothesis, whereas the second is not. E) Both explanations are reasonable and simply represent a difference of opinion ...
Ecology Objective Sheet
Ecology Objective Sheet

... species, nonnative species, indicator species and keystone species. Be able to explain the terms exotic species and endemic species. 5. Write the formulas for respiration and photosynthesis. You will need to memorize these. 6. Describe the concept of range of tolerance (also called “law of tolerance ...
General Review for the Quiz
General Review for the Quiz

... the ________________. The water is generally cool and has high oxygen levels, meaning it is (oligotrophic/eutrophic). After swimming through the middle reaches, Bob comes to the ________________________ of the river and there is a lot of sedimentation. The sediment holds decaying things in water, me ...
Threatened species projects (Stream two) Threatened species
Threatened species projects (Stream two) Threatened species

... If you would like to receive this publication in an alternative format, please telephone the DEPI Customer Service Centre on 136186, email [email protected] or via the National Relay Service on 133 677 www.relayservice.com.au. This document is also available on the internet at www.dep ...
ch14jeopardy - Issaquah Connect
ch14jeopardy - Issaquah Connect

... The term that describes when competitive exclusion results in a division of the resources between the 2 species. ...
Biological species concept
Biological species concept

... • How punctuated equilibrium and gradualism describe two different tempos of speciation. ...
Competition
Competition

... same niche in exactly the same habitat at exactly the same time. One will always exclude the other. ...
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Occupancy–abundance relationship

In ecology, the occupancy–abundance (O–A) relationship is the relationship between the abundance of species and the size of their ranges within a region. This relationship is perhaps one of the most well-documented relationships in macroecology, and applies both intra- and interspecifically (within and among species). In most cases, the O–A relationship is a positive relationship. Although an O–A relationship would be expected, given that a species colonizing a region must pass through the origin (zero abundance, zero occupancy) and could reach some theoretical maximum abundance and distribution (that is, occupancy and abundance can be expected to co-vary), the relationship described here is somewhat more substantial, in that observed changes in range are associated with greater-than-proportional changes in abundance. Although this relationship appears to be pervasive (e.g. Gaston 1996 and references therein), and has important implications for the conservation of endangered species, the mechanism(s) underlying it remain poorly understood
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