The on-going Biodiversity Monitoring in Switzerland Programme (BDM) has monitored vascular-plant species richness since 2001. This long-term programme focuses on two indicators at different spatial scales. First, the local diversity indicator monitors changes of species richness within habitats or types of land use (within-habitat diversity). Second, the landscape diversity indicator is utilized to describe landscape diversity (i.e., within-habitat mosaic diversity). Here we examine if the reproducibility of the BDM methods is sufficiently precise to detect future changes in species richness. We demonstrate that systematic methodical errors are negligible. Random errors that make changes more difficult to detect are also small. We calculate the Minimum Detectable Difference (MDD) for selected BDM strata using the variance of measured values. Then we deduce the MDD values for paired samples using data from grasslands and forests in the Canton Argovia. With 2.4 and 1.6 species they are promisingly precise. We develop a simple scenario for possible changes in species richness and show that they surpass the deduced MDD values by a factor four to six. We conclude that the BDM methods are appropriate for detecting future changes in species richness.
Anderson, D.R. 2001. The need to get the basics right in wildlife field studies. Wildlife Society Bulletin 29: 1294-1297.
'The need to get the basics right in wildlife field studies' () 29Wildlife Society Bulletin: 1294-1297.
The need to get the basics right in wildlife field studiesWildlife Society Bulletin2912941297)| false
Hintermann, U., D. Weber, A. Zangger and J. Schmill. 2002. Biodiversity monitoring in Switzerland BDM - Interim Report. Swiss Agency for the Environment, Forests and Landscape SAEFL. Environmental Series No. 342.
Kéry, M. and H. Schmid. 2004. Monitoring programs need to take into account imperfect species detectability. Basic and Applied Ecology 5: 65-73.
'Monitoring programs need to take into account imperfect species detectability' () 5Basic and Applied Ecology: 65-73.
Monitoring programs need to take into account imperfect species detectabilityBasic and Applied Ecology56573)| false
Palmer, M.W., S.D. McAlister, J.R. Arévalo and J.K. DeCoster. 2000. Changes in the understory during 14 years following catastrophic windthrow in two Minnesota forests. Journal of Vegetation Science 11:841-854.
'Changes in the understory during 14 years following catastrophic windthrow in two Minnesota forests' () 11Journal of Vegetation Science: 841-854.
Changes in the understory during 14 years following catastrophic windthrow in two Minnesota forestsJournal of Vegetation Science11841854)| false
Weber, D. 2002. Langfristúberwachung der Artenvielfalt in den Nutzflächen des Kantons Aargau (LANAG). Die aktuellen Za-hlen 2002. Unveröffentlicht, deponiert. Aarau, Baudepartement Kanton Aargau, Abteilung Landschaft und Gewässer.
Yoccoz, N. G., J.D. Nichols and T. Boulinier. 2001. Monitoring of biological diversity in space and time. Trends in Ecology & Evolution 16:446-453.
'Monitoring of biological diversity in space and time' () 16Trends in Ecology & Evolution: 446-453.
Monitoring of biological diversity in space and timeTrends in Ecology & Evolution16446453)| false
Wohlgemuth, T. 1993. Der Verbreitungsatlas der Farn- und Blütenpflanzen der Schweiz (Welten und Sutter 1982) auf EDV. Die Artenzahlen und ihre Abhängigkeit von verschiedenen Faktoren. Botanica Helvetica 103:55-71.
'Der Verbreitungsatlas der Farn und Blütenpflanzen der Schweiz (Welten und Sutter 1982) auf EDV' () 103Botanica Helvetica: 55-71.
Der Verbreitungsatlas der Farn und Blütenpflanzen der Schweiz (Welten und Sutter 1982) auf EDVBotanica Helvetica1035571)| false
Weber, D., U. Hintermann and A. Zangger. 2004. Scale and trends in species richness: considerations for monitoring biological diversity for political purposes. Global Ecology and Biogeography 13:97-104.
'Scale and trends in species richness: considerations for monitoring biological diversity for political purposes' () 13Global Ecology and Biogeography: 97-104.
Scale and trends in species richness: considerations for monitoring biological diversity for political purposesGlobal Ecology and Biogeography1397104)| false
Madhur Anand, CAN (forest ecology, computational ecology, and ecological complexity)
S. Bagella, ITA (temporal dynamics, including succession, community level patterns of species richness and diversity, experimental studies of plant, animal and microbial communities, plant communities of the Mediterranean)
P. Batáry, HUN (landscape ecology, agroecology, ecosystem services)
P. A. V. Borges, PRT (community level patterns of species richness and diversity, sampling in theory and practice)
A. Davis, GER (supervised learning, multitrophic interactions, food webs, multivariate analysis, ecological statistics, experimental design, fractals, parasitoids, species diversity, community assembly, ticks, biodiversity, climate change, biological networks, cranes, olfactometry, evolution)
Z. Elek, HUN (insect ecology, invertebrate conservation, population dynamics, especially of long-term field studies, insect sampling)
T. Kalapos, HUN (community level plant ecophysiology, grassland ecology, vegetation-soil relationship)
G. M. Kovács, HUN (microbial ecology, plant-fungus interactions, mycorrhizas)
W. C. Liu,TWN (community-based ecological theory and modelling issues, temporal dynamics, including succession, trophic interactions, competition, species response to the environment)
L. Mucina, AUS (vegetation survey, syntaxonomy, evolutionary community ecology, assembly rules, global vegetation patterns, mediterranean ecology)
P. Ódor, HUN (plant communities, bryophyte ecology, numerical methods)
F. Rigal, FRA (island biogeography, macroecology, functional diversity, arthropod ecology)
D. Rocchini, ITA (biodiversity, multiple scales, spatial scales, species distribution, spatial ecology, remote sensing, ecological informatics, computational ecology)
F. Samu, HUN (landscape ecology, biological control, generalist predators, spiders, arthropods, conservation biology, sampling methods)