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... Population Goals not Achievable (exceed management limits) ...
ecosystem responses
ecosystem responses

... There is a saying, “No man is an island,” which means that people need one another in order to survive. Everyone on Earth is interconnected in some way. This is not only true of human beings, but of all living and many nonliving things on Earth. In an ecosystem, individual organisms, populations, an ...
Chapter Outline
Chapter Outline

... mature; thus, distribution patterns are not necessarily constant. 7. Other factors, such as territoriality, seed dispersal, etc., can influence distribution patterns. B. Population Growth 1. The rate of natural increase (r) is dependent on the number of individuals born every year and the number of ...
How Habitat Edges Change Species Interactions
How Habitat Edges Change Species Interactions

... lost from the population and may return or contribute offspring to the patch. Studies of the spatial dynamics of the spruce budworm (Ludwig et al. 1979) are a now-classical ecological application of mixed boundary conditions. Ecological examples of all three types of mixed boundary conditions common ...
Behavioral Ecology
Behavioral Ecology

... (+) agave plants adapt to erratic climate by storing up nutrients for reproduction and when time is right releasing everything for best shot at reproducing (+) when survival rate of offspring is low - repeated reproduction/ iteroparity: life history in which adults produce large #s of offspring over ...
Design an Ecosystem Project (100 points)
Design an Ecosystem Project (100 points)

... • What it eats (if it’s an animal) or soil & water requirements (if it’s a plant) • What eats it • Reproductive behavior (how many offspring, time of year they reproduce) • Any known usefulness or attractiveness to humans 3. Physical Components including climate (soil type, temperature, amount of pr ...
An ecosystem engineer, the beaver, increases species richness at
An ecosystem engineer, the beaver, increases species richness at

... Pickett et al. 2000). Physical ecosystem engineering by organisms – the creation or modification of habitat structure – has been postulated to be an important mechanism generating landscape-level heterogeneity and thus high species richness (Jones et al. 1997). For a physical ecosystem engineer to i ...
PPT
PPT

... • What is happening in this picture? ...
Mader/Biology, 11/e – Chapter Outline
Mader/Biology, 11/e – Chapter Outline

... mature; thus, distribution patterns are not necessarily constant. 7. Other factors, such as territoriality, seed dispersal, etc., can influence distribution patterns. B. Population Growth 1. The rate of natural increase (r) is dependent on the number of individuals born every year and the number of ...
Washington Long
Washington Long

... Rarity and difficulty in assessing population densities contributes to knowledge gaps in occurrence, population, and abundance. Distribution coincides with areas undergoing rapid development and habitat change. Agriculture and forestry practices also have the potential to impact and fragment habitat ...
pdf - New Zealand Ecological Society
pdf - New Zealand Ecological Society

... directing effort to the wrong sites or wrong components of metapopulation dynamics (Gu & Swihart 2004). Models have recently been developed to estimate the proportion of sites occupied by a species when the detection probability is less than one (MacKenzie et al. 2002, 2003; Royle & Nichols 2003). T ...
Preview Sample 3
Preview Sample 3

... 5. Describe the marine nitrogen cycle. Nitrogen enters the marine environment in one of two ways, as terrestrial run-off and as nitrogen gas dissolving from the atmosphere. Nitrogen-fixing bacteria convert nitrogen gas to ammonia, and other bacteria convert ammonia to nitrites and nitrates. Nitrate ...
The Gopher Tortoise - Gopher Tortoise Council
The Gopher Tortoise - Gopher Tortoise Council

... roads, move tortoise to nearest habitat (preferably in direction it was heading) BEWARE OF TRAFFIC! ...
Potential use of energy expenditure of individual birds to assess
Potential use of energy expenditure of individual birds to assess

... as one with a higher than average chance of sustaining the target species into the future. Stochastic extinctions might tend to be more common in areas with higher productivity (for example, areas with rich fluvial soils are prone to catastrophic flooding), so the long-term fitness of animals that o ...
Fauna Technical Note No. 18 Threatened frogs 1
Fauna Technical Note No. 18 Threatened frogs 1

... seen ‘basking’ out of water amongst vegetation or on rocks and logs. The breeding season in Tasmania is from September to January. The species requires adequate water levels for tadpole survival and prefers warmer water for breeding. Ideal breeding habitat is the shallow part of waterbodies (to appr ...
F2009B00248 F2009B00248 - Federal Register of Legislation
F2009B00248 F2009B00248 - Federal Register of Legislation

... that is necessary for a species’ long-term survival and recovery. This may include populations that are: key source populations either for breeding or dispersal, populations that are necessary for maintaining genetic diversity, and/or populations that are near the limit of the species range. Because ...
Population Growth Finz 2012
Population Growth Finz 2012

... • Despite technological advances, factors influencing population growth will eventually limit expansion of human population. These will involve limitation of physical and biological resources as world population increased to over six billion in 1999. The world population has reached over 7 billion p ...
Future directions of fisheries management
Future directions of fisheries management

... The multi-species approach adds a new level of information by addressing species interactions. The multi-species approach relies mainly upon diet composition (trophic structure) and recruitment data (amount of fish added to the exploitable stock each year) to predict the consequences of varied fishing ...
How stable are habitat associations through a breeding season?
How stable are habitat associations through a breeding season?

... able to move up a habitat-gradient, or that fail to consider such within-season movement, may place undue emphasis on lower quality habitats settled by naı̈ve individuals. We tested the assumption that birds are static in their association with habitat within a breeding season by analyzing data from ...
Chapter 8 & 9 Review
Chapter 8 & 9 Review

... 5. A population will most likely deplete the resources of its environment if the population • A) must share resources with many other species. • B) moves frequently from one habitat to another. • C) grows beyond carrying capacity. • D) has a low reproductive potential. ...
Section 14.4: Population Growth Patterns
Section 14.4: Population Growth Patterns

...  Human Activities: Humans drastically change any ecosystem or habitat that they move into in a variety of ways  Destruction of habitat (loss of wetlands due to developments)  Introduction of nonnative species causes population crashes in many parts of the world, especially where biodiversity is p ...
Bild 1
Bild 1

... Economically, moose became an important species, both for hunters and for forestry production. This started a debate about how to regulate and manage the moose population. Little research has been done so far on the effects in large mammal predator–prey systems of habitat alternation. In order to me ...
Introduce Pattern Metrics
Introduce Pattern Metrics

... Interspersion (the intermixing of units of different patch types) and Juxtaposition (the mix of different types being adjacent) index (IJI) ...
Caribou
Caribou

... Caribou are classified by ecotype (where they occur and how they behave) for their management and conservation. There are three major types of caribou in Canada: Peary, Barren-ground, and Woodland. Woodland Caribou, the largest and darkestcoloured are irregularly distributed ...
HABITAT ENHANCING MARINE STRUCTURES: CREATING
HABITAT ENHANCING MARINE STRUCTURES: CREATING

... access to high quality environmental education opportunities, which has been linked to increased support for conservation measures, increased sensitivity to environmental issues, and improvements in learning and behavior (Savard et al., 2000; Coyle, 2005; Bryant, 2006). HEMS can also support the go ...
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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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