introduction to the classification, morphology and ecology ...€¦ · handbook of bird biology....
TRANSCRIPT
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Introduction to the Classification, Morphology and Ecology
of Asian Raptors
LIN Wen-HornRaptor Research Group of Taiwan
2008/10/24
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Subjects PART I
Classification: to classify many raptor species into hierarchical groupsMorphology: the form and structure ofraptorsEcology: the relations and interactions between raptors and their environment.
PART II
Introduction to the Asian Raptor genera
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Raptor and Human Cultures
Nomadic people in central AsiaMany people’s worshipLogos and symbolsVery few used in modern world
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Copyright© Lynx Edicions
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Evolution Tree of Raptors
Copy from Leslie Brown (1976)
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Classification is a “tree structure”
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Raptor ClassificationExample 1: Sibley and Monroe 1990
belongs to Order CICONIFORMES4 families, 81 genera, 311 species
Family Sub-Family Genera SpeciesFAMILY ACCIPITRIDAE PANDIONINAE
ACCIPITRINAE164
1239
FAMILY SAGITTARIIDAE 1 1
FAMILY FALCONIDAE 10 63
FAMILY CICONIIDAE 5 7
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Raptor ClassificationExample 2: Clements 2000
Order FALCONIFORMES5 families, 308 species
Family SpeciesFAMILY CATHARTIDAE 7
FAMILY ACCIPITRIDAE 236
FAMILY FALCONIDAE 63
FAMILY PANDIONIDAE 1
FAMILY SAGITTARIIDAE 1
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Raptor ClassificationExample 3: Dickinson 2003
Order FALCONIFORMES3 families, 83 genera, 304 species
Family Genera Species World Distribution
FAMILY CATHARTIDAE 5 7 AmericasFAMILY FALCONIDAE 11 64 whole WorldFAMILY ACCIPITRIDAE 67 233 whole World
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Mechanism of Raptor Evolution
Morphology
Hunting Skill
Prey Species
Habitat
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MorphologyThe biology to study the form and structure of organisms.
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Morphology vs FunctionStructure FunctionEyes To see,to seek preyEars To hear, to seek preyNose To smell
Claws To kill
Bill To tear the prey apartWings To fly, to chase the preyTail To turn, to keep balance
Plumage To hide
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Eyes & Sight
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(Podulka et al. eds 2004. Handbook of Bird Biology. Cornell Lab of Ornithology, Princeton University Press)
Eyes & Sight
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Ears & Hearing
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Nose & Smell
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Advantage for Wing Feature disadvantage for
Gliding, Long distance travel
Long & Narrow Action in small space
Soaring Big Area High wind resistance
Agility in Small space
Short & Broad Long distance travel
Stable slow flight Deep “Fingers” Fast flight
Fast flight Pointed Wing Slow flight
Frequent flapping Angled
Long time Floating Light weighted Stooping Strength
Wings & Flight
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Wing & Tail shape diversity
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TailLong tail benefits swift turningRaptor’s tail length relates to its turning agility, also relates to its prey’s agility“Third wing” of small raptorsSpecial balance function
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Feet & Claws
Eagle, Hawk-eagle Sparrowhawk
Osprey Vulture
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Ecologyfrom Greek “oikos”, it means “home”
Ernest Haekel (1869) is the first one to use the word
Krebs(1972): “the scientific study of the interations that determine the distribution & abundance of organisms”
the science to understand the relations and interactions between organisms and their environment.
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Ecology
Organism
Organism of the same species
Organism of different species
Environment
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The role of raptor in an ecosystemPredator
Higher consumers, feeds on various animalsDistributes all terrestrial ecosystems worldwideSmall population, but controls huge small animal’s population.Enhance evolution and biodiversityVery diverse in size, in shape, etc. Perfect killers, with extremely good flight skills A good indicator of the ecosystem’s health
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How to Study Raptor Ecology in your hometown? -some suggestions
First of all, go out to find raptors, and record it.Accumulate records, then you have begun the distribution study.Think about why these raptors distribute like this, then you have begun the habitat study.To observe what does the raptor feed on, then you have begun the food habit study.If you can find a raptor nest, observe the whole breeding period carefully, then you have begun the best part of life history study.
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Ecological Isolation of the Raptor in TaiwanThe food
P.ha
C.ae
F.ti
F.pe
S.ch
A.tr
A.vi
M.mi
I.ma
S.ni
Larger mammals ●
Medium Birds ○ ● ● ○ ○
Rata ● ● ● ○ ●Squirrels ● ○ ●Larger Birds ● ○ ●
Small Birds ● ○ ○ ●Chick, Eggs ●Snakes, Lizards ● ○ ○ ○ ○Frogs ○ ○Insects ● ○ ●Fishes ●Dead Fish, Garbage ●
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Ecological Isolation of the Raptor in TaiwanThe Habitat
P.ha
C.ae
F.ti
F.pe
S.ch
A.tr
A.vi
M.mi
I.ma
S.ni
Grassland ○
Secondary Fr. ● ● ● ● ●Lowalt.
Highalt. Coniferous Fr. ○ ○
Hybrid Fr. ○ ● ● ○ ●Midalt. Broadleaved Fr ○ ● ● ● ●
Plantation ● ● ● ○Village ○ ○ ○ ●Meadows ○ ● ○Wetlands ● ○ ○
Plain
Rivers, Lakes ● ●Seashore ● ● ● ●Isles ● ● ●
Seashore
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Some suggested further readings
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Let the sky owns the raptors, Let the raptors own the sky.