Das BayCEER-Kolloquium ist eine interdisziplinäre Plattform für Studierende, Wissenschaftler*innen und Interessierte: I.d.R. wöchentlich (in der Vorlesungszeit) werden Vorträge im Themenfeld Ökologie und Umweltwissenschaften gehalten, die anschließend im Plenum und in lockerer Atmosphäre während des Postkolloquiums diskutiert werden können. Gerne kann das Mittagessen mitgebracht werden (Brown Bag Lunch).

Programm Kolloquium Sommer 2024
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Terminplanung kommende Semester und Vortragsarchiv BayCEER Kolloquium

Vortragsreihe Ökologie und Umweltforschung WS 2013/14

Alle Termine
PD Dr. Jürgen Dengler
Disturbance Ecology, UBT & Synthesis Centre (sDiv), German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig (Homepage)
Donnerstag, 07.11.2013

Scale dependency of biodiversity - how patterns and drivers change with spatial grain size

The fact that species richness, on average, increases with the scale of observation (grain size) is a fundamental law of ecology and biogeography. Still there is much dispute about how different factors contribute to shaping such species-area relationships (SARs) and which mathematical models are best suited for their description. Scale dependency, however, means more than just SARs. While ecologists often assume “universality” of diversity gradients along, for example, latitudinal and longitudinal gradients, as well as uniform underlying drivers, there might actually be a change in biodiversity patterns as well as in the role of different environmental factors that shape them when looking at different spatial grains.

In my talk, I will briefly introduce the idea of scale dependency in ecology and its manifestation in SARs and other phenomena. For a better understanding studies that combine analyses at different spatial grain sizes are important, particularly if they cover larger spatial extents. One particularly prominent manifestation of the scale dependency is the fact that global maxima of vascular plant species richness for grain sizes from 100 m² upwards are (expectedly) found in Neotropical rainforests, while at smaller grain sizes (probably unexpected for many) European semi-dry basiphilous grasslands are the global record holders, far above rainforests or any other habitat type studied so far. Starting from this, I will explore scale dependency in patterns and causes of biodiversity, using examples mostly from European grasslands and from Southern African drylands.

 



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Aktuelle Termine


Antrittsvorlesung:
Mi. 22.05.2024
Funktionelle Pilzökologie: Diversität und Prozesse auf unterschiedlichen Skalen
BayCEER-Kolloquium:
Do. 06.06.2024
Tracking plant diversity dynamics on islands over thousands of years
Mo. 10.06.2024
Arsenic biogeochemistry from paddy soil to rice grain
Do. 13.06.2024
Seeing the forest beneath the trees: Mycorrhizal fungi as trait integrators of ecosystem processes
Ökologisch-Botanischer Garten:
Mi. 29.05.2024
Führung | "Grüne Apotheke: Heilpflanzen"
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Luftdruck (356m): 960.1 hPa
Lufttemperatur: 15.6 °C
Niederschlag: 10.5 mm/24h
Sonnenschein: <1 h/d

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