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help maintain balance & stability in an ecosystem?
help maintain balance & stability in an ecosystem?

... – What types of communities do you see (or not see, but know are there)? – What populations of organisms do you see (or not see, but know are there)? – For three organisms identify their niche ...
Controlling Invasive Species
Controlling Invasive Species

... cause it to become diseased • Biological control agents must be carefully assessed before release to ensure the control species will not become invasive itself ...
File
File

... II. Species Interactions B. These interactions influence individual fitness, population density, species distribution, and even extinction levels or rates. C. When looking at interspecific species interactions, its helpful to ask if the interaction is beneficial or detrimental to each species invol ...
Community Ecology
Community Ecology

... • Physical structure varies – Most habitats are mosaics, vegetation patches – Sharp edges or broad ecotones (transition zones) – Physical properties differ at edges = edge effect – Forest edge may be sunnier, drier, warmer • different species at the edge • Many wild game species found here • Edges c ...
Chapter 7
Chapter 7

... •Ex: flying foxes are keystone species because they pollinate tropical trees and disperse seeds, such as durian fruit trees ...
AP BIOLOGY SUMMER ASSIGNMENT Copy notes from webpage
AP BIOLOGY SUMMER ASSIGNMENT Copy notes from webpage

... a. open ocean, because of the total biomass of photosynthetic autotrophs b. grassland, because of the small standing crop biomass that results from consumption by herbivores and rapid decomposition c. tundra, because of the incredibly rapid period of growth during the summer season d. cave, due to t ...
Exam 2 Study guide Part 2 Putting it all together: Ecology and
Exam 2 Study guide Part 2 Putting it all together: Ecology and

... Putting it all together: Ecology and ecosystems Overview: The Scope of Ecology Ecology is the scientific study of the interactions between organisms and the environment These interactions determine distribution of organisms and their abundance Ecology reveals the richness of the biosphere The Scope ...
Feeding Relationships
Feeding Relationships

... as a whole. ...
ecology good - Appoquinimink High School
ecology good - Appoquinimink High School

... • Abiotic factors- nonliving parts of the environment (i.e. temperature, soil, light, moisture, air currents) ...
Kentner - York College of Pennsylvania
Kentner - York College of Pennsylvania

... adult size of the Marburg species, which may give it an advantage of having fewer predators. Also, it was observed sitting on top of and pushing other smaller turtles off of the platforms to maximize basking. • Exposure to aquatic predators and interruptions in basking caused by entering the water i ...
Speciation_and_Extinction_chapter_6
Speciation_and_Extinction_chapter_6

... Allopatric separation  speciation • This is like going away, then coming back and finding everyone has changed • (except it is over generations of time) ...
Fish Fauna of the Great Lakes
Fish Fauna of the Great Lakes

... settlement is limited, chance of settlement is rare and random - “lottery” hypothesis ...
Control and eradication
Control and eradication

... • increased herbivory caused significant damage (local and on landscape scale) • Efforts to control rabbit population reversed in only 6 years ➡ strong top-down control of rabbits by a small cat population (ca. 160 adult cats) ...
Relationships: Predation, Competition, Symbiosis
Relationships: Predation, Competition, Symbiosis

... True predation is when a predator kills and eats its prey. Some predators of this type, such as jaguars, kill large prey. They tear it apart and chew it before eating it. Others, like bottlenose dolphins or snakes, may eat their prey whole. In some cases, the prey dies in the mouth or the digestive ...
habitat segregation by species of metaphidippus
habitat segregation by species of metaphidippus

... That small salticid species should partition b y type of space occupied, rather than successiv e temporal occurrence, was predicted by Enders (1975) based on previous habitat-sampling studies . The Metaphidippus species we investigated had similar temporal occurrences of adults, i .e . , many mature ...
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... 5-3 What Limits the Growth of Populations?  Concept 5-3 No population can continue to grow indefinitely because of limitations on resources and because of competition among species for those resources. ...
6. Community Ecology new
6. Community Ecology new

... • Physical structure varies – Most habitats are mosaics, vegetation patches – Sharp edges or broad ecotones (transition zones) – Physical properties differ at edges = edge effect – Forest edge may be sunnier, drier, warmer • different species at the edge • Many wild game species found here • Edges c ...
Feb 25
Feb 25

... controlled manner, while holding all other attributes constant. Mensurative experiment ...
Ch52-56MustKnows-Ecology Review
Ch52-56MustKnows-Ecology Review

... Ecology integrates all areas of biological research and informs environmental decision making. Interactions between organisms and the environment limit the distribution of species. Aquatic biomes are diverse and dynamic systems that cover most of Earth. The structure and distribution of terrestrial ...
Understanding populations
Understanding populations

... than in a sparse population.  Density independent: when deaths are equally likely in a crowded or sparse population. ...
→There are four types of interactions:
→There are four types of interactions:

... •  The organism that benefits is called the parasite, while the  organism that is harmed is called the host. ...
Planning for Species Reintroductions (with some examples for large
Planning for Species Reintroductions (with some examples for large

... demographic considerations, one recent modeling study of griffin vultures found that release of juveniles reduced long-term extinction risk from the accumulation of mutations (Robert et al. 2004) ...
Last lecture! Ch 23 cont. Biodiversity
Last lecture! Ch 23 cont. Biodiversity

... • Ecological release provides evidence for hypothesis of local interactions controlling species diversity. ...
Eumadicole midges – film stars of the freshwater world
Eumadicole midges – film stars of the freshwater world

... limited; in many cases we assume that a very fine layer of organic (bacterial/algal) material on the substrate forms the food source. Potential competition for the food is reduced but other components of the aquatic community can also take advantage of this habitat. Similarly, predation pressure from ...
Lecture3 biomes,dist web
Lecture3 biomes,dist web

... – Hot & Dry, distributed throughout the world ...
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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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