BIO3132 Lecture Notes - Lecture 6: Passerine, New Zealand Wren, Australian Wildlife Conservancy
31 May 2018
School
Department
Course
Professor
Week 4. Mammal Diversity II and Bird Diversity I
AUSTRALIAN MAMMAL DIVERISTY II
Lecture objectives:
• Poide a oeie of Austalia aals
• Disuss asupials as a doiat adiatio
• Iestigate the oigis of Austalia aals
• Disuss diversity today
• Iestigate the uet etitio eet
• Mammal distribution
Irian
o Irian biogeographic zone = New Guinea and northern Australia
o Temperature 10-46ᵒC
o High rainfall
o Wet tropical habitats
o Northern Australia quoll is the largest marsupial
Torresian
o Tropical northern Australia to sub-tropical NSW
o Temperature 10-46ᵒC
o Seasonal raindall
o Eg. Northern Quoll eats small vertebrates
-dying due to introduction of cane toads -> have learnt to avoid toxin
-> issue for semelparity
Tumbunan
o North-eastern Queensland
o Temperature 0-33ᵒC
o High rainfall
Bassian
o Cooler south-eastern and south-western coastal regions
o Seasonal fluctuations
o Diverse range of habitats
Eyrean
o Encompasses 2/3 of Australia
o Temperature 5-46ᵒC
o Rainfall very low and highly variable
find more resources at oneclass.com
find more resources at oneclass.com
• Macropod distribution
• Drivers of terrestrial mammals:
1. Climate
o More arid lands – less nutrient cycling
o Less biodiverse mesic habitats
2. Megafaunal
extinction
o Coincides with arrival of modern humans
o 50,000 years ago
o Lost a remarkable number of large mammals
o Giant macropod that was carnivorous
-not active hunters, scavengers (omnivores)
3. Dingoes
o Arrival 4000 years ago
o Coincides with loss of larger mammals
4. Arrival of
Europeans
o 230 years ago
o Much better documented specimen records
• Extinctions since 1788
• Factors causing extinction:
o Predation by feral cats
o Predation by red fox
o Livestock and feral herbivores – changing landscape
o Habitat loss and fragmentation – vegetation clearance
o Disease
o Inappropriate fire regimes
o Hunting (eg. thylacine)
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Lecture objectives: p(cid:396)o(cid:448)ide a(cid:374) o(cid:448)e(cid:396)(cid:448)ie(cid:449) of aust(cid:396)alia(cid:374) (cid:373)a(cid:373)(cid:373)als, dis(cid:272)uss (cid:373)a(cid:396)supials as a do(cid:373)i(cid:374)a(cid:374)t (cid:396)adiatio(cid:374, i(cid:374)(cid:448)estigate the o(cid:396)igi(cid:374)s of aust(cid:396)alia(cid:374) (cid:373)a(cid:373)(cid:373)als, dis(cid:272)uss diversity today, i(cid:374)(cid:448)estigate the (cid:272)u(cid:396)(cid:396)e(cid:374)t e(cid:454)ti(cid:374)(cid:272)tio(cid:374) e(cid:448)e(cid:374)t, mammal distribution. Irian biogeographic zone = new guinea and northern australia. Torresian: temperature 10-46 c, high rainfall, wet tropical habitats, northern australia quoll is the largest marsupial, tropical northern australia to sub-tropical nsw, temperature 10-46 c, seasonal raindall, eg. Dying due to introduction of cane toads -> have learnt to avoid toxin. Tumbunan o north-eastern queensland: temperature 0-33 c, high rainfall, cooler south-eastern and south-western coastal regions, seasonal fluctuations, diverse range of habitats, encompasses 2/3 of australia, temperature 5-46 c, rainfall very low and highly variable. Eyrean: macropod distribution, drivers of terrestrial mammals, climate, megafaunal extinction, dingoes, arrival of. Europeans: more arid lands less nutrient cycling, less biodiverse mesic habitats, coincides with arrival of modern humans, 50,000 years ago, lost a remarkable number of large mammals, giant macropod that was carnivorous.
