Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Banu .S and Nayana .P and Jitendra Kumar
Jr . M.F.Sc
College of Fisheries
Mangalore
jitenderanduat@gmail.com
Overviews
Ecological concepts
 Mortality
 Risk selected species

Habitat concepts
 Ecological niche
 Carrying capacity...
Mortality
 Mortality is the condition of being mortal , or

susceptible to death .
 Rate at which individuals are lost b...
R- selected species
 These organisms live in setting, where population level

below the maximum no. that environment can ...
 R- selected species like insect, bacteria and largest

species such as frog, rats
 They are capable of rapid growth.
 ...
Habitat in an ecosystem
 Ecologist use the term habitat to mean the role that

the organism live and term ecological nich...
Ecological niche
 Different species interact in different ways.
 Interaction can have positive, negative and neutral

im...
 Niche can be easier to quantify and analyze.
 It can be described as specific ranges of variables like

temperature, la...
Carrying capacity
 Carrying capacity of environment varies from region to

region depending on population pressure.
 The...
 Every ecosystems has its resources that are used for

economic development for survival and for the habitat
creation.
 ...
jitenderanduat@gmail.com
Upcoming SlideShare
Loading in …5
×

Aquatic environment and biodiversity

573 views

Published on

Published in: Technology
  • Be the first to comment

  • Be the first to like this

Aquatic environment and biodiversity

  1. 1. Banu .S and Nayana .P and Jitendra Kumar Jr . M.F.Sc College of Fisheries Mangalore jitenderanduat@gmail.com
  2. 2. Overviews Ecological concepts  Mortality  Risk selected species Habitat concepts  Ecological niche  Carrying capacity jitenderanduat@gmail.com
  3. 3. Mortality  Mortality is the condition of being mortal , or susceptible to death .  Rate at which individuals are lost by death ( death rate)  Mortality is a measure of the no. of deaths ( in general , or due to a specific cause ) in a populations . jitenderanduat@gmail.com
  4. 4. R- selected species  These organisms live in setting, where population level below the maximum no. that environment can support the carrying capacity.  Their nos are going exponentially high at the maximum rate  Organism tend to be small, short lived and opportunistic .  They grow through irregular boom and bust in a population cycle jitenderanduat@gmail.com
  5. 5.  R- selected species like insect, bacteria and largest species such as frog, rats  They are capable of rapid growth.  They need favorable condition for their growth.  These r- selected species mature later in life and have fewer offspring with longer gestation times. jitenderanduat@gmail.com
  6. 6. Habitat in an ecosystem  Ecologist use the term habitat to mean the role that the organism live and term ecological niche to mean that the role of organism plays in the ecosystem  Habitat is the “address” and Niche is the “profession” jitenderanduat@gmail.com
  7. 7. Ecological niche  Different species interact in different ways.  Interaction can have positive, negative and neutral impact on the species involved.  Each species in an ecosystem occupies a niche  Niche can be defined as interaction of all the ranges of tolerance, under which an organisms can live. jitenderanduat@gmail.com
  8. 8.  Niche can be easier to quantify and analyze.  It can be described as specific ranges of variables like temperature, latitude and altitude.  For example: African fisheagle occupies very similar ecological niche to the American bald eagle.  The full range of habitat types in which the species can exist and reproduce without any competition from other species is called fundamental niche. jitenderanduat@gmail.com
  9. 9. Carrying capacity  Carrying capacity of environment varies from region to region depending on population pressure.  Their dependences on food, water, energy, raw material requirement, waste production.  Carrying capacity of environment is the threshold limit of use of that ecosystem without damaging the systems. jitenderanduat@gmail.com
  10. 10.  Every ecosystems has its resources that are used for economic development for survival and for the habitat creation.  Regenerating them over the period of time that are temporary and not exceeding threshold damage limit. jitenderanduat@gmail.com
  11. 11. jitenderanduat@gmail.com

×