project

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project

• Jose toruno

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• Population dynamics is the branch of life
  sciences that studies short-term and long-term
  changes in the size and age composition of
  populations, and the biological and environmental 
  processes influencing those changes. Population
  dynamics deals with the way populations are
  affected by birth and death rates, and
  by immigration and emigration, and studies topics
  such as ageing populations or population decline.

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Changes to an ecosystem

• Changes in seasonal patterns of precipitation and
  runoff will alter hydrologic characteristics of
  aquatic
• systems, affecting species composition and
  ecosystem productivity. Populations of aquatic
  organisms are
• sensitive to changes in the frequency, duration,
  and timing of extreme precipitation events, such
  as floods or

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Changes to an ecosystem

• droughts. Changes in the seasonal timing of
  snowmelt will alter stream flows, potentially
  interfering with the
• reproduction of many aquatic species. Climate
  change is likely to further stress sensitive
  freshwater and coastal wetlands, which are
  already

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Changes to an ecosystem

• adversely affected by a variety of other human
  impacts, such as altered flow regimes and
  deterioration of water
• quality. Wetlands are a critical habitat for many
  species that are poorly adapted for other
  environmental conditions and serve as important
  components of coastal and marine fisheries.

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positive/negative consequences that result from a
reduction in biodiversity.

• Losses in biodiversity in rainforests cause
  significant changes in ecosystem functioning.
  About ecosystem functioning in tropical rain
  forests we know very little, but we do know that
  ecosystems are affected by changes in the number
  and kinds of species which they contain, an idea
  originally conceived by Charles Darwin and Alfred
  Russell Wallace. Intact ecosystems function best,
  since the organisms composing them are
  specialized to function in that ecosystem to
  capture, transfer, utilize and, ultimately, lose
  both energy and nutrients. The particular species
  making up an ecosystem determine its
  productivity, they affect nutrient cycles and
  soil contents, and they influence environmental
  conditions such as water cycles, weather
  patterns, climate and other no-biotic aspects

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Definitions

• pH-is a measure of the hydrogen ion concentration
  of a solution. Solutions with a high
  concentration of hydrogen ions have a low pH and
  solutions with a low concentrations of H ions
  have a high pH.

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Definitions

• Oxygen- colorless, odorless, tasteless gaseous
  chemical element which appears in great abundance
  on Earth, trapped by the atmosphere

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Definitions

• Carbon dioxide-  colorless, odorless gas, CO2,
  produced by burning carbon and organic compounds
  and by respiration and absorbed by plants

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Definitions

• Nitrogen-The chemical element of atomic number 7,
  a colorless, odorless unreactive gas that forms
  about 78 percent of the earth's atmosphere.

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Definitions

• Phosphorous- The chemical element of atomic
  number 15, a poisonous, combustible nonmetal that
  exists in two common allotropic forms.

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Definition

• salinity- The taste experience when salt is taken
  into the mouth. The relative proportion of salt
  in a solution. The degree of saltiness of a given
  substance such as the ocean.

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Definition

• Depth- The distance from the top or surface of
  something to its bottom.
• Latitude- The angular distance of a place north
  or south of the earth's equator, usually
  expressed in degrees and minutes.

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Definition

• Temperature- The degree or intensity of heat
  present in a substance or object, esp. as
  expressed according to a comparative scale

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Underwater topography- typically referred to as
Bathymetry
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Reduction in biodiversity

• Human activities- For thousands of years, humans
  have reduced biodiversity by hunting animals to
  extinction. They've also destroyed a lot of
  habitat by cutting down trees and
  draining/polluting wetlands etc, and this has
  further reduced biodiversity.

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Reduction in biodiversity

• Invasive species are a major threat to U.S.
  biodiversity, second only to habitat loss and
  degradation. Non-native invaders can also be a
  threat to human health, and cost the U.S. economy
  billions of dollars by rendering range lands
  unpalatable, clogging water intact pipes, and
  decimating commercial fisheries by serving as
  disease vectors. Unfortunately, global warming is
  expected to greatly exacerbate the impact of
  invasive species on our native wildlife and
  ecosystems.

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