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DTSTART:20131027T030000
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RDATE:20141026T030000
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DESCRIPTION:The fact that species richness\, on average\, increases with th
 e scale of observation (grain size) is a fundamental law of ecology and bi
 ogeography. Still there is much dispute about how different factors contri
 bute to shaping such species-area relationships (SARs) and which mathemati
 cal models are best suited for their description. Scale dependency\, howev
 er\, means more than just SARs. While ecologists often assume “universalit
 y” of diversity gradients along\, for example\, latitudinal and longitudin
 al gradients\, as well as uniform underlying drivers\, there might actuall
 y be a change in biodiversity patterns as well as in the role of different
  environmental factors that shape them when looking at different spatial g
 rains.\nIn my talk\, I will briefly introduce the idea of scale dependency
  in ecology and its manifestation in SARs and other phenomena. For a bette
 r understanding studies that combine analyses at different spatial grain s
 izes are important\, particularly if they cover larger spatial extents. On
 e particularly prominent manifestation of the scale dependency is the fact
  that global maxima of vascular plant species richness for grain sizes fro
 m 100 m² upwards are (expectedly) found in Neotropical rainforests\, while
  at smaller grain sizes (probably unexpected for many) European semi-dry b
 asiphilous grasslands are the global record holders\, far above rainforest
 s or any other habitat type studied so far. Starting from this\, I will ex
 plore scale dependency in patterns and causes of biodiversity\, using exam
 ples mostly from European grasslands and from Southern African drylands.\n
  
DTSTART;TZID=Europe/Berlin:20131107T000000
DTEND;TZID=Europe/Berlin:20131107T235959
SUMMARY:PD Dr. Jürgen Dengler\, Disturbance Ecology\, UBT & Synthesis Centr
 e (sDiv)\, German Centre for Integrative Biodiversity Research (iDiv) Hall
 e-Jena-Leipzig (Homepage): Scale dependency of biodiversity - how patterns
  and drivers change with spatial grain size
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