Regnskovsgruppen
Foreningen Regnskovsgruppen Nepenthes
Regnskovsgruppen Nepenthes
Nepenthes
Verdens Skove
Danish nature association founded in Oct. 1983
Natural forest nature and sustainable production globally…
Verdens Skove excursion, Bjergeskov
Photo: Jan Kunstmann / Verdens Skove
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
My field areas, making quantitative tree plots
Osa Peninsula
Costa Rica
Añangu,
Yasuní NP, Ecuador
Krau Wildlife
Reserve, Malaysia
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
My field areas, making quantitative tree plots
Osa Peninsula
Costa Rica
Añangu,
Yasuní NP, Ecuador
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Field work, Yasuní, Amazonian Ecuador
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Field work, Yasuní, Amazonian Ecuador
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Field work, Yasuní, Amazonian Ecuador
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Field work, Osa Peninsula, Costa Rica
Photo: Juan José Jimenez Espinoza
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Field work, Osa Peninsula, Costa Rica
Photo: Jørgen Korning
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Field work, Osa Peninsula, Costa Rica
Photo: Hanne Christensen
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Field work, Osa Peninsula, Costa Rica
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Square plot of four hectares, 200 x 200 meters
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Size distribution in 4 ha of mature rain forest
% of all stems
and of total
basal area in
DBH-classes,
from 10-20 cm
and so on.
70
60
Total number of stems 2,274
Total basal area 151,8 sqm
50
Series1
Series2
40
30
20
10
0
20
30
40
50
60
70
80
90
100
110
120
130
140
150
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Size distribution in 4 ha of mature rain forest
Crown heights
(meters),
lowest to
highest
branch
DBH
(cm)
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Diversity of woody plants, Aguabuena, Osa Pen.
Species new and unpublished
when registered and collected:
Species name, author, publ. year
Ruptiliocarpum caracolito Hammel & N. Zamora
1993
Duguetia confusa Maas 1996
Sloanea rugosa Dam. A. Sm. 1996
Bourreria grandicalyx J. S. Mill. & Sirot 1997
Mouriri tuberculata Morley & K. Thomsen 1997
Parathesis acostensis J. F. Morales 1997
Guatteria pudica N. Zamora & Maas 2000
Symplocos naniflora L. M. Kelly & Almeda 2002
Persea albiramea van der Werff 2002
Psychotria calidicola C. M. Taylor 2002
Protium pecuniosum D. C. Daly 2004
Eschweilera aguilarii S. A. Mori 2007
Palicourea grandifructa C. M. Taylor 2010
Prioria sp. nov
Licania sp. nov.
Sideroxylon sp. nov.
16 species
4.0% of all species, 4,2% of stems, 4,3% of BA
Total species 292
Total stems 2,274
19
3
5
2
2
4
1
1
2
1
7
15
2
27
1
3
95
1,89
0,03
0,87
0,08
0,07
0,10
0,01
0,01
0,56
0,01
0,27
0,45
0,02
1,68
0,02
0,46
6,54
4.3% of total
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Diversity of woody plants, neotropical rain forests
Species per number of
stems (DBH ≥ 10 cm)
All data from
one-hectare plots
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
My field areas, making quantitative tree plots
Krau Wildlife Reserve
63,000 ha total
37,000 ha lowland rain forest
Preserved since 1923
Until 1999 unknown tree
composition
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
My field areas, making quantitative tree plots
Krau Wildlife Reserve
Photo: Hanne Christensen
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
My field areas, making quantitative tree plots
Krau Wildlife Reserve
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
My field areas, making quantitative tree plots
Krau Wildlife Reserve
Foto: Hanne Christensen
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
My field areas, making quantitative tree plots
Krau Wildlife Reserve
Photo: Hanne Christensen
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
South East Asian megafauna: Going…
Krau Wildlife Reserve
Photo trappings of
species in 100 days
Malayan sun bear (Helarctos malayanus)
Barking deer (Muntiacus muntjak)
Wild pig (Sus scrofa)
Asian tapir (Tapirus indicus)
Leopard (Panthera pardus delacouri)
Tiger (Panthera tigris jacksoni)
Sambar deer (Rusa unicolor)
Wild dog/dhole (Cuon alpinus)
Clouded leopard (Neofelis nebulosa)
Serow (Capricornis sumatraensis)
Gaur ox (Bos gaurus)
Asian elephant (Elephas maximus)
Sumatran rhino (Dicerorhinus
sumatrensis)
Banteng (Bos javanicus)
4.28
2.48
1.83
0.79
0.78
0.30
0.26
0.04
0.04
0.02
0.02
0
Bearded pig (Sus barbatus)
Javan rhino (Rhinoceros sondaicus)
0
0
0
0
Source: KWR Management Plan 2001-2005.
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Latin American megafauna: Gone for 10,000 yrs!
By Sergio de la Rosa, The Rewilding Institute, rewilding.org.
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Lambir Hills NP, Sarawak
Photo: Karsten Thomsen
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Lambir Hills NP, Sarawak
Photo: Christian Ziegler
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Jim LaFrankie sorting vouchers from the Lambir 52 hectare plot (Dec. 1992)
Lambir Hills NP, Sarawak
Photo: Karsten Thomsen
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
50 hectare plots in tropical rain forest, DBH ≥ 1 cm
BCI
Panama
235,317 stems
305 species
Yasuní
Ecuador
298,000 stems
Lambir Hills
East Malaysia
339,266 stems
1,171 species
Korup
Pasoh
Cameroun
328,503 stems
489 species
Pen. Malaysia
320,903 stems
817 species
1,140 species
Data from Plotkin 2000, Kenfack 2014, Valencia pers. komm.
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Cyclic successions and mosaic structure …
- after Hallé, F. et al. (1978):
Tropical Trees and Forest. –
Springer
So….
Tropical rain forests – what we CAN learn:
– to study basic ecology of old natural forest; structure, structural
turn-over, species co-existence, carbon flow, niches…
– to widen our PERCEPTIONS of old-growth forest; not stagnant
dead places, but dynamic engines of life…
– to start seeing European forests as potential natural systems
where many species may co-exist, including woody species.
After centuries of studies of forestry ecology we are lacking much
in studies of forest ecology. We need places like Hainich….
Tropical rain forests – what can we learn
in relation to forest dynamics in Europe?
Hainich NP, Thuringia
Photo: Thomas Stefan
https://www.dropbox.com/l/bfLdC1VXYdu8usvjbUp4Ts
Contact:
Karsten Thomsen
[email protected]
Danish debate book ”Alle tiders urskov”, in pdf:
https://www.dropbox.com/l/bfLdC1VXYdu8usv
jbUp4Ts