The document discusses how habitat loss, invasive species, pollution, population growth, and overconsumption by humans (HIPPO factors) contribute to population changes in nature. It provides examples of each, such as 93% of coral reefs being damaged by human activity, bullfrogs outcompeting native frog species in BC, and scotch broom invading Garry Oak meadow ecosystems. The document suggests some solutions to these problems, like habitat restoration, protected areas, and removing invasive species. It also asks questions about the effects of habitat fragmentation on populations and species vulnerability.
Non-Native Specie House Mouse3a). The house mouse is a native r.docxhenrymartin15260
Non-Native Specie: House Mouse
3a). The house mouse is a native rodent from Eurasia. They were introduced worldwide through the human association. The first country that introduced the house mouse to the United States was Western Europe. In Southern California we don't have a high population of house mouse but the small amount that we do came from Asia.
3B). This specie does have a colonized habitat. They like to colonize in homes, stores granaries, barns, and feed houses. They like to colonize in humans homes because they eat any type of human food but they are mainly on the look out for cereals and grains. when they have to set up a nest they go out to the wild specially on greenery areas and fields. The House mouse don't have loss of natives since they aren't aggressive species since they habitat in large territories. The male house mousse get aggressive male to male because they like to protect their territories. when female mouse are expecting they get aggressive with female mousses when they are out looking for food.
3C). yes house mouse to have resources because they are on the look out for food so that means their resources are homes mainly because they will always find food. since they are nocturnal specie they can inhibit in close places.
3D). there isn't much of a bad impact for the native species since they mainly inhibit in hidden territories. They like to nest out in the wild but they have their own way of going in and out of their territory to prevent from being invaded by others.
http://www.britannica.com/EBchecked/topic/273137/house-mouse (Links to an external site.)
http://www.columbia.edu/itc/cerc/danoff-burg/invasion_bio/inv_spp_summ/Mus_musculus.html (Links to an external site.)
http://en.wikipedia.org/wiki/House_mouse (Links to an external site.)
Running Head: COTTONTAIL RABBIT
COTTONTAIL RABBIT 2
Cottontail Rabbit
Chenao Jiang
09/13/2014
Native species refers to animal or plant species thriving in the ecology they evolved from, where exotic species refers to plant or animal species living outside their ecological zone, which existence in the present ecology is as a result of human activity. Ecology on the other hand refers to interactions between the living organisms and their environment. This means that, there is usually a change in interaction when a new species is introduced in a new ecological system. The change in interaction affects both the introduced species and the indigenous species. The term exotic species culminates from European exploration, colonization and settlement outside their continent. They carried with them plants and animals originally thriving in their original homeland to their new settlement areas.
This paper focuses on animal species that can be found from Canada to South America and, in the United States, from the East Coast to the Great Plains and New England. Cottontail r.
11/2/2014
1
Community Ecology I
Stability, Resilience
WFC 10 – D. A. Kelt
A biological community is defined by the species that occupy a
particular locality and the interactions among those species.
A Primer of Conservation Biology, 3rd ed. R. B. Primack 2004
Community Ecology is the study of biological communities.
In what ways are communities organized, structured, predictable?
In what ways are they not?
Note the difference between “habitat” and “community.”
The former refers to a physical location,
whereas the latter refers to constituent species.
Many communities may appear very similar.
Coniferous Forest
near Mt. Rainier
central Oregon
King’s Canyon National Park
Sandy Desert
Sahara Desert
Simpson Desert (Australia)
Death Valley, California
Thus, there may be great variation
from point to point in these
communities
One major way in which they differ is
in composition – the particular species
that occur at a site.
Example: Burrowing
mammals
N. Amer. - Gopher
Asia - Zokor
Australia – Marsupial mole
S. Amer. – Tuco tuco
Africa – Mole rat
Ecologically similar species in different
regions with different evolutionary origins.
N. Amer. - Gopher
Asia - Zokor
Australia – Marsupial mole
S. Amer. – Tuco tuco
Africa – Mole rat
11/2/2014
2
Often true at smaller spatial scales as well . . .
Geomys
Eastern Pocket Gophers
Cratogeomys
Yellow-faced Pocket Gophers
Pappogeomys
Southern Pocket Gophers
Thomomys
Western Pocket Gophers
4 genera of North American
pocket gophers
From a conservation perspective we are interested in how
stable a community is in the face of anthropogenic abuses.
Stability – often portrayed in simple cartoon fashion as follows:
So, given all this variation, how are communities structured,
and how do they respond to disturbance?
Global Stability Local Stability
Stability may be measured by a community’s fluctuation over time.
Communities often remain stable over time.
However, they may be perturbed by some external force.
What happens then?
The American chestnut (Castanea dentata)
made up >40% of trees in mature eastern
deciduous forest.
Chestnut blight – introduced to New York City in ca. 1900
By 1950 only 1 remaining large tree in North America
What impact did this enormous loss have on
the biota of eastern North America?
Perhaps surprisingly, essentially no impact.
Eastern deciduous forests are very diverse – maples, oaks, hickories, catalpa, etc. Loss of American chestnut led to NO major changes in animal or plant communities.
Black bears may have suffered from loss of mast.
Thus, this was a relatively minor perturbation
from the perspective of the community – it
evidently shifted to a different local stable point.
Seven butterfly/moth species were specialists on
American chestnut, and have gone extinct.
Another 49 Lepidopterans simply shifted their hosts.
11/2/2014
3
Pollution – another
perturbation that can
result in ecological
deteriorat.
Animals and plants are losing their homes Habitat demolition is the.pdfANGELMARKETINGJAIPUR
Animals and plants are losing their homes: Habitat demolition is the main driver of species
extinction. When we destroy a forest in a specific zone, we have destined all the living things
flourishing in that environment. When we cut off streams with dams or assemble streets through
a forest, we are decimating ecosystems.
Where will they live? Do we try to migrate them? Is that even conceivable? Possibly the huge
creatures which we can see, yes. Be that as it may, as a rule, we don\'t trouble.
Deforestation has murdered off a larger number of species than we can distinguish. To date, we
have obliterated around 13 million hectares of forest, home to a huge number of species of all
shapes and sizes. We are pulverizing forests to supply the perpetually developing needs of our
progress for wood, paper, and different materials that originate from our trees. Because of
deforestation, we are pushing the Mountain Gorillas far from their habitat and they can\'t deal
with the worry of coping.
We are Overhunting and Overharvesting: Hunting and harvesting are vital exercises of people.
We have to eat and survive. On the off chance that this were our exclusive reasons, the planet
can likely manage us. It can duplicate and manage us with an enduring supply. In any case, we
are overharvesting a few species, similar to the Bluefin Tuna, the Whales and Sharks and a few
species of fish. These species can\'t recreate sufficiently quick to address our issues.
The Tiger is being chased to extinction, not as nourishment but rather for its excellent skin and
its organs which are viewed as therapeutic in some Asian nations. The same is valid for the
Rhino whose horns are additionally accepted to be restorative and for the Elephant whose tusks
are made of valuable ivory.
There’s someone new in the neighborhood: Accidentally and intentionally, we acquaint new
species with an ecosystem where these newcomers go after the local species or rival them for
their sustenance. A case is when individuals coincidentally acquire bothers starting with one
nation then onto the next. These vermin have no regular predators in their new environment so
they can spread quick and obliterate the adjust of their habitat.
There are just too many Humans: Our detonating populace is another fundamental driver of
species extinction. The causes recorded above are aggravated a great many times by our
continually developing number. We are going after space, over-using and our unquenchable need
are simply overpowering the other living things living on our planet.
What can we do about it?:
Solution
Animals and plants are losing their homes: Habitat demolition is the main driver of species
extinction. When we destroy a forest in a specific zone, we have destined all the living things
flourishing in that environment. When we cut off streams with dams or assemble streets through
a forest, we are decimating ecosystems.
Where will they live? Do we try to migrate them? Is that even conceivable? Possibly th.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
1. 6.1 HIPPO-1
Learning Outcomes:
1. Explain how HIPPO factors contribute to population changes
Readings: 14: 363-370, 379-382, 386-38715: 414-418
Viewing: E.O. Wilson explains HIPPO http://www.ted.com/index.php/talks/view/id/83
(http://www.eol.org/eo_wilson_speech.html ) for the text of the speech
The impacts of human population growth:
H habitat loss/destruction
I invasive/introduced species
P pollution
P population growth (by humans)
O overuse/overconsumption of native species
93% of earth’s coral reefs
Habitat destruction have been damaged by
human activity Reefs only
occupy about 0.2% of the
ocean floor
We will lose 40-50% of the
reefs in the next 30 to 40
yrs. These reefs are home
to ~1/3 of the planet’s
marine fish
Fragmented habitat (Amazon)
Prince George, BC (Google Earth) What are the white dots?
Despite laws which require all clear-cut land in BC to be replanted within 5 years, the
amount of old growth forest being lost in BC continues to increase (aside from mt. pine
beetle damage).
Fragmentation creates small isolated populations thus increasing extinctions. Loss of
biodiversity is seen along boundaries of natural habitats.
QUESTIONS:
What happens when a habitat becomes fragmented?
1. There is an overall decrease in the amount of habitat area.
2. 2. The smaller fragmented patches have more contact with the second habitat (shown as light
coloured strips). What effect might this have on the species in the green habitat? Imagine that
we have a large contiguous section of Pacific Spirit Park and suddenly it gets fragmented and
the light habitat are open grassy areas. What effect could that have on plant species that
were previously in shady forest with big trees and are now right next to open grassy
areas?
- Changing abiotic conditions next to the edge
- Possible increased predation with increased exposure
- Possible increased competition with species found in the second habitat
Which scenario is likely to affect the most species?
a-Some mating pairs need isolation for breeding so fragmentation will INCREASE their reproductive
rate
b-Many breeding pairs mate for life so there will be LITTLE EFFECT on reproductive rate b/c the pairs
will stay together
c-The reproductive rate will DECREASE if individuals have difficulty travelling between patches to find
mates OR there can be inbreeding in these populations causing each to be genetically less fit (inbred
offspring will die more frequently)
It’s harder to breed w/ other individuals if there are few in your patch or if there is difficulty moving to other patches
(animals) or spreading gametes to individuals in other patches (plants)
- Changing abiotic conditions
- Increased exposure to predators in open habitat
- Smaller mating populations
- Loss of genetic diversity
3. A number of small “metapopulations” are created. Imagine we initially have the same number
of species in the green patches compared to the continuous green habitat. (Compare the two
areas below) Why can species more easily be lost from individual patches than when the
habitat is continuous? Consider the habitat below with one animal species shown as males ♂
and females as ♀. Why is this population more threatened now that the species are
found in small patches?
4. Species can become more vulnerable to predators when found in small patches. When motile
species may attempt to move from one patch to another they may be more vulnerable while
traveling from one patch to another in the different habitat. Eg. What if the species below were
deer…why would a deer become more vulnerable when moving from one forest patch
through the open grassy area to another forest patch?
- The deer is more vulnerable because it is easy to see, as compared to other species.
3. ♂♀ ♂ ♀ ♀♂♂♀ ♀ ♀ ♀♂
♂ ♂♀ ♀ ♀♀ ♂♀ ♀ ♀♀ ♀
♂♂♂♂ ♂♂♂♂
♂ ♀ ♂ ♂ ♀♂
♀ ♂ ♀♂
♂ ♂ ♂ ♂
♀♀ ♂ ♂
♀♀ ♂♀ ♂♂ ♀ ♂ ♀
♂ ♀ ♂ ♀♀ ♂♂ ♀ ♂ ♂♂ ♂
♀♀♀ ♀♀♀ ♀ ♀
♀ ♂ ♀ ♂
♂ ♀ ♂♂ ♀ ♀♂ ♀
♂♂♂ ♂♂♂♂ ♂♂♂ ♂♂
♂ ♂ ♀♀
♂ ♂ ♂ ♀♀ ♀ ♂ ♀
♀ ♂ ♀ ♂♂ ♀ ♂ ♂♂ ♂♀ ♀ ♂♂ ♂♀
If we know habitat destruction is responsible, what can we do?
- Habitat restoration
Certain species are threatened because of habitat loss. These owls
live along the Shuswap river in hollows within trees like black
cottonwoods. Restoration attempts create habitat (eg by
planting deciduous trees along rivers (riparian areas), exclude
livestock (cows damage habitat) and also create temporary
habitat (bird houses).
Western screech-owl (Otus kennicottii macfarlanei)
You can help: http://www.pacificspiritparksociety.org/Volunteering/Work_Parties.html
http://www.parkpartners.ca/partners/burnaby/burnaby.htm
Different lower mainland parks and organizations have various volunteer opportunities. http://www.parkpartners.ca/
associations .
- Protected areas (some areas exist, others proposed, others needed)
Alaksen National Wildlife Area Endeavour Hydrothermal Vents Bowie Seamount
(snow geese) (tube worms near Black smoker) (salps and red sunflower seastars)
Pacific flyway National Wildlife Area Marine Protected Area Marine Protected Area
Great increases in diversity have been observed where fishing is prohibited. Also the population
increases extend outside of protected area limits
4. -wildlife corridors
for larger animals (Lake Louise) and reptiles and amphibians (Iowa project)
Invasive and Introduced Species:
American bullfrogs (Rana catesbeiana) are common in eastern Canada
and the U.S. They were brought to B.C. by entrepreneurs that set up
farms in the hope of selling the frogs legs to local restaurants. These
businesses were not successful, the farms were abandoned and the
frogs were free.
As a new species to the community, the frogs have few native predators.
Herons, eagles, snakes, only consume young frogs often certain size range not taken.
Bullfrogs have voracious appetites. They will consume “anything that they can get into their mouths”
Eg. Insects ducklings, songbirds, mice, garter snakes, fish, other amphibians includes red-legged frog (native BC species)
Also competes with red –legged frog for food
Bullfrogs are prolific reproducers. One female can produce and lay up to 20 000 eggs at one time.
They can easily disperse between ponds, lakes and streams. It has been estimated that they have increase
their range on Vancouver Island by 5 km a year. -invade new habitats ,cause increased competition for space
or habitat
What impact do the bullfrogs have on native frog species?
5. -outcompete for food and space -prey on the native frogs -native spp. are decreasing
(ironically these bullfrogs are declining in Ontario, one of their native habitats, due to pollution, roadkill and
habitat loss)
Scotch broom (Cytisus scoparius) was introduced as a garden plant in 1850. Seed pods produce many seeds
that spread explosively. The plants grow quickly, shading other native plants. Scotch broom has another
advantage in that a symbiotic bacteria lives within its roots. These bacteria fix nitrogen from the soil and
enable scotch broom to live in poor soils or disturbed sites.
The Garry Oak meadow ecosystem is a
relatively small isolated ecosystem
containing endangered species such as
the Garry oak itself. Areas like it which
have endemic plant and animal species
(unique species only found there) are
especially vulnerable to introduced
species becoming invasive.
Scotch broom Garry Oak meadow, an endangered ecosystem in B.C.
Scotch broom is now common in southern B.C. and has invaded Garry Oak meadow communities.
QUESTION: Can you think of any other unique ecosystems full of species found nowhere else which may be in
danger? (Anywhere in the world?)
QUESTIONS: The green crab is slowly moving up the west coast towards British Columbia, in order to
become established here what conditions must exist? In other words, what are characteristics of invasive
species?
You can help remove invasive plant species:
http://www.stanleyparkecology.ca/programs/public/ivy_busters.php
http://www.pacificspiritparksociety.org/Volunteering/Get_Involved.html
Which of these is not a defining characteristic of invasive species
a. They are aggressive competitors (they have to be able to compete w/ what’s already there)
b. They have many predators (If there were many predators, they wouldn’t be able to get established in the new
habitat)
c. They have many possible food sources (helps make the species more adaptable to the new environment.
Adaptations to prevent predation, toxins, spines etc in plants)
d. They have many offspring
e. They tolerate a wide range of abiotic vactors