Download - Ibac2007 riede
Klaus Riede
Staatliches Museum für Naturkunde Stuttgartand
Alexander Koenig Zoological Research Museum Bonn
Germany
Computer-aided Inventories of
Bioacoustic Diversity:
First Results and Future Needs
Assessment and monitoring of animal calls
Registration
Identification
Classification- conventional- computer-aided
Data-basing:- curation- publication
Future needs
Bioacoustic classification of ethospecies allows Rapid Assessment and Monitoring
Mapping with microphones allows to answerimportant research questions, such as:
- species ranges/ endemism- species abundance- species turnover- community patterns- activity patterns- vulnerability to habitat degradation- extermination rates (2010 targets)
- SPECIES DISCOVERY
www.dorsa.de
Insect diversity in tropical forest canopies
Guess-timates from fogging the canopy: 30 million (Erwin 1982) - 80 million (Stork 1988)
Number of singing Orthoptera:
Cricket species;
Cicada species
and many more.....
The Problem:
.... but how can insect diversity be mapped or monitored,if most species not even have a name?
> 50„new“
100 42 species
Ecuador: mountain
Ecuador:
lowland
Malaysia:Borneo lowland forest
locality
Braun 2002Nischk 1999
Floren, Riede & Ingrisch 2001
Source
„new“ Orthoptera from fogging and sampling in SA and SEA
49
47 37
SPONSORED BY THE
Specimen-based database of important Orthoptera collections held in German museums :
9000 (type) specimens from 9 collections
Virtual Museum and Phonothek with images, sounds and maps 28,000 Images
more than 4,000 sounds with voucher specimens
Available through the SYSTAX Oracle database
Links to GBIF and Orthoptera Species File
DORSA - Digital Orthoptera Specimen Access www.dorsa.de
DORSA Virtual Museum and Phonothek – Digital ORthoptera Specimen Access
www.dorsa.de
DORSA: a specimen-oriented approach to digitise Phonotheks
www.dorsa.deSPONSORED BY THE
Analog and digital recordings from private phonothekswere digitised, standardised (wav), data-based andintegrated into DORSA
Major providers digitised and checked their own collection (Ingrisch, Heller, Nischk)
or co-operated with data providers (Coll. Schmidt)
A collection of back-up CDs is stored at the Museum Koenig
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Lesson: Collection of individual songsters is necessary for baseline data sets,
But manual sound analysis is too time-consuming for rapid assessment
BUT...
Machine-learning techniques were successfully applied to classify 31 cricket and 22 katydid species
From: Dietrich et al. 2004, Pattern Recognition 37, 2293
Extraction of sound parameters by using MatLab Software
Pulse rate
Carrier frequency
Carrier frequency
In cooperation with:Dept of Neuroinformatics, Ulm
Frequency - Pulse distanceTrigoniinae subset from Ecuador
Pulsedistance[ms]
100
5 Frequency 18,0002,000
Annotation in Bioacoustics: Alexandre Yersin (1854):
Mémoire sur quelques faits relatifs à la stridulation des Orthoptères et leur distribution géographique en Europe.
Bulletin des Séances de la Société Vaudoise des Sciences Naturelles 4: 108-128
from Ragge & Reynolds 1998, p 65
Musical annotation for 38 species of acridid grasshoppers,e.g. Chorthippus mollis,C. brunneus und C. biguttulus,
http://www.simputer.org/
Rapid assessment of bioacoustic diversityand Species Discovery
requires portable software and databases
Wishlist and perspectives
User-friendly interfaces Federated multimedia databases (GBIF?) Unique identifiers for sound files
Wishlist and perspectives
User-friendly interfaces Federated multimedia databases (GBIF?) Unique identifiers for sound files Metadata standards
Wishlist and perspectives
User-friendly interfaces Federated multimedia databases (GBIF?) Unique identifiers for sound files Metadata standards searchable sound annotations (incl carrier
frequency)
Wishlist and perspectives
User-friendly interfaces Federated multimedia databases (GBIF?) Unique identifiers for sound files Metadata standards searchable sound annotations (incl carrier
frequency) ...... more sound files
Wishlist and perspectives
User-friendly interfaces Portable tools (cricket detector):
basic sound processingfeature extractionlocal database access
searchable sound annotations (incl carrier frequency)
Federated multimedia databases (GBIF?) ...... more sound files
Bioacoustics and taxonomy:
Klaus-Gerhard HellerSigfrid IngrischFrank NischkKlaus Riede
Thanks to:
IT
Karl-Heinz Lampe, Klaus RiedeJürgen Hoppe (SYSTAX) David Eades (OSF)
Automated Identification of Orthoptera songs
Christian DietrichGünther PalmFriedhelm Schwenker(Department of Neural Information Processing, Ulm University)