Thursday, April 25, 2013

Energy and the water cycle

Here are a few resources to help you review some of the Ecosystems concepts covered in this section.

Ecosystem Cycling


Energy flow dynamics in different systems
Example (below): General patterns of energy flow for a) forest, b) grassland, c) plankton community at sea, d) community of a stream or small pond.  Relative sizes of boxes and arrows are proportional to the relative magnitude of pools  and flows.  The decomposer system is responsible for much of the secondary production, hence the large/wide respiration arrows indicated in Fig. 11.7.  
.
DOM, dead organic matter; LCS, Live consumer system; NPP, Net Primary Productivity 
(Figure 11.7, Ch. 11, Essentials of Ecology by Townsend et al.)


DOM, dead organic matter; NPP, Net Primary Productivity; 
Boxplot: 25% CI, median, 75% CI (Figure 11.8, Ch. 11, 
Essentials of Ecology by Townsend et al.)
The adjacent boxplot figure expands upon Figure 11.7, illustrating the percent of NPP consumed by herbivores in a given system compared to the percent of NPP that becomes DOM.




Water Cycle
 
Hydrologic Cycle by Vision Learning - informative cite with interactive practice QUIZ questions!

The USGS water cycle diagram (right)  can use to quiz yourself. You may check your answers here.
Neat water-related links
 TED-Ed video "Where we get our fresh water" By C.Z. Peppard.   




Factors Affecting Global Climate
This article by Stevens (2012) gives a good summary of the major drivers affect global climate patters.

(Scitable, 2012)


Thursday, April 4, 2013

Community Ecology Study Resources

Here are a few resources for additional information regarding topics covered in this section of lecture (some resources go more in-depth than what we have covered in class).

Community Interactions

(Scitable, predator-prey link)



Mighty Mutualisms: Plant-pollinator Interactions

(Begon et al. 1990. via Scitable)
Neat Virtual Lab comparing interspecific competition between Paramecium spp. in a fashion similar to Gause's experiment (note: you may want to record your data table on paper).

Resource Partitioning

 

 

Community composition
(Scitable, succession link)
 

Characterizing communities: richness, evenness, and diversity

Succession: community change through time

Disturbance & Diversity
 e.g., Intermediate Disturbance Hypothesis

The Maintenance of Species Diversity
e.g., Competitive Exclusion, Coexistence

Community Ecology - a general gateway for exploring related topics.


Biomes (final exam)
(Figure 4, Nature.com/Scitable)

Terrestrial Biomes

The World's Biomes