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2010 Grassland earless dragon Report 10163 (1 0)
2010 Grassland earless dragon Report 10163 (1 0)

... surface rock, visible invertebrate burrows, soil cracks and in parts supported an abundance of weeds. The rocks present were mostly large imbedded rocks not usually suitable as shelter for the dragons. The study area was surrounded by housing development on three sides, cultivated paddocks to the so ...
Habitat Fragmentation Effects on Birds in Grasslands
Habitat Fragmentation Effects on Birds in Grasslands

... 1997; Cashen 1998; Naugle et al. 1999). A second potential problem with studies is that vegetation can be heterogeneous within a habitat patch or among patches. This variation may lead to the appearance of area sensitivity where it really does not exist. For example, a larger patch may have a greate ...
Habitat selection determines abundance, richness and species
Habitat selection determines abundance, richness and species

... and thus operate both within communities and at the metacommunity scale (Resetarits 2005). Multispecies habitat selection generates very different ecological consequences compared with random dispersal and differential mortality because species distributions are based on the redistribution of indivi ...
Ecology of Populations
Ecology of Populations

... exponential due to environmental resistance ...
Ch. 38
Ch. 38

... • In a symbiotic relationship, two or more kinds of organisms live together in often elaborate or more of less permanent ...
Chapter 4.1 Population Dynamics Notes
Chapter 4.1 Population Dynamics Notes

... o ________________________ the members of this population are seemingly randomly placed. Dandelion seeds are blown by the wind, and land randomly on the ground. SEE YOUR CHAPTER 4.1 READING ON PAGE 93 FOR DIAGRAMS OF THE 3 PATTERNS OF DISTRIBUTION! ...
B20 Ch3 powerpoint
B20 Ch3 powerpoint

... • An organism’s environment includes biotic and abiotic components. Organisms affect and are affected by their environment. Organisms are part of a population, a community, an ecosystem(s), and Earth’s biosphere. Abiotic factors in the environment affect the distribution of organisms. • Biologists u ...
Benchmark SC.912.L.17.5
Benchmark SC.912.L.17.5

... • Students will use data and information about population dynamics, abiotic factors, and/or biotic factors to explain and/or analyze a change in carrying capacity and its effect on population size in an ecosystem. • Students will assess the reliability of sources of information according to ...
“Human activities are generally concentrated in areas of high
“Human activities are generally concentrated in areas of high

... the relative biodiversity across the region. The resulting regional maps of habitat types, reservoirs, refuges, and connectivity identify priority protection areas for conservation, wetlands, old growth forests, and intertidal zones. ...
Creating a Frog Pond!
Creating a Frog Pond!

... 8 Plant native shrubs/reeds around the pond to attract insects and provide shelter for frogs. 9 Place a solar light beside the pond to attract insects for the frogs. ...
Document
Document

... tend to loose their genetic diversity faster than expected by genetic drift models. The reason is that in a population not all individual reproduce. In other words, the number of individuals do not always reflects the number of individuals that contribute their alleles to the next ...
Population Ecology PPT - NMSI
Population Ecology PPT - NMSI

... What causes these populations of different organisms to clump together? Clumped distribution in species acts as a mechanism against predation as well as an efficient mechanism to trap or corner prey. It has been shown that larger packs of animals tend to have a greater number of successful kills. ...
Why can`t we all just get along?
Why can`t we all just get along?

... Random – evenly distributed resources, no territories; Uniform – evenly distributed resources, strong territories; Clumped – unevenly distributed resources. ...
Habitat Structure - MSC Program Improvements
Habitat Structure - MSC Program Improvements

... important to note that these services may be life-stage and size dependent and can change according to the density of biotic and abiotic physical matter within the habitat structure itself” (Grieve et al., 2011). Original Proposed Definitions The following definitions were proposed for discussion at ...
help maintain balance & stability in an ecosystem?
help maintain balance & stability in an ecosystem?

... How does this predator-prey relationship help maintain balance & stability in an ecosystem? • Predators eat prey and maintain health of the prey populations • Predators eat the old, sick, weak – those “less fit” to survive the help the evolution of the species • Works like a cycle: As the population ...
Population Dynamics – Growth Rates
Population Dynamics – Growth Rates

...  Density-Dependent Factors: any factor in the ...
species focus - UNH Cooperative Extension
species focus - UNH Cooperative Extension

... and abandonment of farms throughout the last century. Many wildlife species of conservation concern found in these forests are attracted to patches of old or young trees within the larger forest area. Today’s forests don’t support the same high diversity of wildlife species as older forests that con ...
Ecology: Lecture 1
Ecology: Lecture 1

... Who live in small caves, known as Niches, for hutches. These Nutches have troubles, the biggest of which is The fact there are many more Nutches than Niches. Each Nutch in a Niche knows that some other Nutch Would like to move into his Niche very much. ...
BIO 201
BIO 201

... another and also with the abiotic elements of their environment in an interrelated system.  This means that organisms and environment form a reciprocating  system. There is a give  and  take  between  these  two  systems  with  the  action  or  inaction  of  one  system  having  impact on the other  ...
Interactions annotations
Interactions annotations

... the organism reproduces, and the physical conditions it requires to survive. By having its own way to hunt for food, and the type of food it eats, and its own kind of shelter, organisms do not have to compete as much. However, two populations CANNOT occupy the same niche at the same time in an ecosy ...
Population Size and Limiting Factors
Population Size and Limiting Factors

... particular species that the environment can normally and consistently support • An environment has a specific carrying capacity for each different species ...
Recovery Strategies Backgrounder (PDF 444KB)
Recovery Strategies Backgrounder (PDF 444KB)

... Establish new populations of each species a risk. Increase plant population sizes and/or population growth rates at extant sites. Establish Vernal Pool Conservation Areas at Uplands Park, Trial Island, Rocky Point, and Harewood Plains. 10. Increase public awareness of vernal pools and associated spe ...
Monsoon Vine Thickets Monsoon Vine Thickets
Monsoon Vine Thickets Monsoon Vine Thickets

... mammals as well as migratory species like the channelbilled cuckoo and pied pigeon. ...
population dynamics
population dynamics

... • J- shaped growth  young populations will grow exponentially at first. Times are good! • Eventually, environment resists – (too crowded, not enough resources) ...
Population Ecology
Population Ecology

... Number of individuals per unit area How do we measure population density? impossible to count all individuals in a population  estimated by indirect indicators  number of bird nests ...
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Source–sink dynamics

Source–sink dynamics is a theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms.Since quality is likely to vary among patches of habitat, it is important to consider how a low quality patch might affect a population. In this model, organisms occupy two patches of habitat. One patch, the source, is a high quality habitat that on average allows the population to increase. The second patch, the sink, is very low quality habitat that, on its own, would not be able to support a population. However, if the excess of individuals produced in the source frequently moves to the sink, the sink population can persist indefinitely. Organisms are generally assumed to be able to distinguish between high and low quality habitat, and to prefer high quality habitat. However, ecological trap theory describes the reasons why organisms may actually prefer sink patches over source patches. Finally, the source-sink model implies that some habitat patches may be more important to the long-term survival of the population, and considering the presence of source-sink dynamics will help inform conservation decisions.
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