@article {Riede1998Acoustic,
	title = {Acoustic monitoring of Orthoptera and its potential for conservation},
	journal = {Journal of Insect Conservation},
	volume = {2},
	number = {3},
	year = {1998},
	month = {December},
	pages = {217{\textendash}223},
	abstract = {Songs of Orthoptera can be used for inventorying and monitoring of individual species and communities. Acoustic parameters such as carrier frequency and pulse rates allow the definition of recognizable taxonomic units (RTUs) which help to overcome the taxonomic impediment due to our scanty knowledge, particularly of tropical faunas. Bioacoustic diversity is a first estimate for species richness and provides baseline data which can be a prerequisite for conservation. Additional ecological and behavioural information such as habitat preference and singing schedules can be inferred. Many Orthoptera are sensitive indicator species for habitat quality in temperate and tropical ecosystems. Examples are given for evaluation of habitat quality and deterioration by acoustic detection of Orthoptera.},
	keywords = {acoustic\_detection, acoustic\_parameters, annotation, asr, biodiversity, carrier\_frequency, indicator\_species, orthoptera, species\_richness, taxonomic\_impediment, taxonomic\_units},
	doi = {10.1023/A:1009695813606},
	url = {http://www.groms.de/data/zoology/riede/RiedeetalJOR06.pdf},
	author = {Riede, Klaus}
}
@article {Levin1998Ecosystems,
	title = {Ecosystems and the Biosphere as Complex Adaptive Systems},
	journal = {Ecosystems},
	volume = {1},
	number = {5},
	year = {1998},
	month = {September},
	pages = {431{\textendash}436},
	abstract = {ABSTRACT\&nbsp;\&nbsp; Ecosystems are prototypical examples of complex adaptive systems, in which patterns at higher levels emerge from localized interactions and selection processes acting at lower levels. An essential aspect of such systems is nonlinearity, leading to historical dependency and multiple possible outcomes of dynamics. Given this, it is essential to determine the degree to which system features are determined by environmental conditions, and the degree to which they are the result of self-organization. Furthermore, given the multiple levels at which dynamics become apparent and at which selection can act, central issues relate to how evolution shapes ecosystems properties, and whether ecosystems become buffered to changes (more resilient) over their ecological and evolutionary development or proceed to critical states and the edge of chaos.},
	keywords = {ecology, evolution, systems, theory},
	issn = {1432-9840},
	doi = {10.1007/s100219900037},
	url = {http://dx.doi.org/10.1007/s100219900037},
	author = {Levin, Simon A.}
}
