Conservation status & threats Instructor Flashcards
human dimension of conservation
conservation responses are shaped by:
-normative views about the relationship between humans and non-humans
-values and desired objectives
-institutions and governance
-normative ideas are important-they create concrete outcomes
ethical perspective
-anthropocentric
-biocentric
anthropocentric
-nature has value for humans ends and use
-it has value because humans assign value to it
-instrumental value
biocentric
-nature has value unto itself,regardless of its value to humans
-value is independent of humans
-instrinsic value
what is biological diversity
-variability among living organisms
the three levels of biodiversity
-species diversity
-genetic diversity
-ecosystem diversity
species diverty
incluedes all species on earth
ex:dogs
ex:animal,fungi,plants,bacteria
genetic diversity
genetic variation within species,both among different populations and individuals within a population
ex:golden and shapred
ecosystem diversity
different biological communities and their associations with the abiotic enviroment
we know very little
we think 10 million exists
1.5 million species have been identify and clarified
86% of land species and 91% of marine species remain undiscovered
what is happening of biodiversity
-decline
-possibly in the sixth mass extensisions episode
-loss of genetic variability (even domesticated species)
Living Planet Index(LPI)
-measures the state of global biodiversity
-based on population trends
-about 5,2000 species and more than 32,000 populations of vertebrates
-indicator adopted by the CBD
global data = 69% decline in population (1970-2018)
more/the most decline in latin america
decline the most fresh water LPI
not all population are decresing
why is biodiversity declining
direct threat includes:
1.deforestation,habitat loss and habitat fragmentgation
2.pollution
3.overexplotation
4.invasive species
climate change (not yet)
LPI
underestimate data in tropicals